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SERVICE MANUAL - HPI Technologies

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1. I smoothing and color balance amp Photo mode Mode other than photo c PC print data 2 8 Gamma correction 7 compression 9 Multi valued data 9 Error diffusion binary 1 8 bit data Binary data 10 Input buffer memory 11 JBIG compression i Multi valued data 12 File code memory 8 bit data DRAM 512MB standard HDD 40G standard 19 Area discrimination FEET 13 JBIG expansion gt 15 Frame memory 8 20 Interpolation 14 Memory access coordinator EN i 21 Gamma correction 16 Output buffer memory 22 Screening 17 BTC expansion 23 Main scanning speed conversion 18 Main scanning position correction 24 Modulation To PH unit Theory of operation ver 3 0 Aug 2006 23 Image processing The following detail the image processing operations performed by MFP control board the write section 1 2 10 The stored image data is compressed in the JBIG joint bi level image experts 11 12 13 14 15 16 17 19 20 21 Reduction processing is conducted in sub scanning direction no processing is done at same size or zoom but at reduct
2. 9 9J08T1C100AA Theory of operation ver 1 0 Aug 2006 4 Drive 4 Drive 9J08T2C001DA 109 1 018 71 9 84 10 Theory of operation ver 1 0 Aug 2006 5 Operations 5 Operations 51 Transport section The transport section is divided into the entrance transport section intermediate trans port section storage section and the exit transport section It controls to transport the paper fed from the main unit stop the paper at the punching and creasing positions and drive the paper for feeding into the exit section FS 514 PK 510 OT 601 Entrance transport section 2 Q 9 9 Intermediate transport section 9J08T2C002DB 11 FS 514 PK 510 OT 601 5 Q 5 5 Operations Theory of operation ver 1 0 Aug 2006 5 1 1 Entrance switch section One sided printing paper and the two sided printing paper for printing the second side which are loaded from the copier will be loaded to the intermediate transport section forward entrance Two sided printing paper for printing the first side will not be loaded to the intermediate transport section but will switch back to the copier In order to do this the duple
3. 8 5 1 2 Paper switchback 12 5 1 3 Roller rolls spacing mechanism eene 13 P AMMEJS 14 5 2 1 Paper aligning mechanism essent 15 5 3 TT 17 5 3 1 Stapling 17 5 3 2 Stapling unit moving mechanism essen 18 5 8 3 Staple sheet empty 19 5 4 Elevator tray 5 4 1 Elevator tray ascent descent 20 5 4 2 Elevator tray shifting mechanism sese 21 5 5 22 5 5 1 Paper transport mechanism 23 FS 501 E S Q 9 9 Theory of Operation Ver 1 0 Jul 2005 FS 501 8 E Q Q Blank Page ij Theory of Operation 1 0 Jul 2005 1 Product specification Outline 1 Product specification 5 Single Staple Finisher Installation Freestanding Document Alignment Center Supplies Staple Cartridge Job separator JS 601 Option B Functions Modes Group Sort Offset Group Offset Sort Sort Staple a
4. 23 5 4 3 Folding mechanism 27 5 4 4 Paper folding start 28 FS 603 g Q 9 9 Theory of Operation Ver 1 0 Jul 2005 FS 603 8 E Q Q Blank Page ij Theory of Operation 1 0 Jul 2005 1 Product specification Outline 1 Product specification 8 A Type Multi Staple Finisher with Saddle Booklet Installation Freestanding Document Alignment Center Supplies Staple Cartridge B Functions Modes Normal Group Sort Group Offset Sort Offset Sort Staple Center Staple amp Fold Punch Option Group Punch Sort Punch Group Offset Punch Sort Offset Punch Sort Staple Punch C Paper type Remove the finisher off the Copier for feeding the long paper The maximum loading capacity shown is for when loading the single type of paper 80 g m 1 Group Sort No of Type Size Weight Tray Capacity 1 Exit Tray Sheets to be Stapled Plain Paper 55 5 to 90 g m 45 4 1st paper wide 16 to 2416 85x118 85x14 exit tray or smaller or larger 5 5 x 8 5S No of 5 5 x 8 5 to Sheet 1000 500 12 25x 18 Height 150 mm 75 Envelop 60 to 256 g m 20 sheet OHP
5. 2 4038T2C125AA e Registration roller sensor PC1 5 Tray1 paper take up roller 8 a o zZ eg Oo L JY oy Tray1 separator roller j ee _ TTE 4038T2C171AA Tray 1 device detection sensor PC12 Tray paper feed clutch CL2 Tray1 paper empty sensor PC10 Tray1 paper near empty gt sensor PC11 Tray1 paper take up roller G Tray1 CD paper size Tray1 paper size sensor PC9 board PWB I 4038T2C026DB 70 Theory of operation ver 3 0 Aug 2006 16 Paper feed section 16 1 2 Tray2 Tray2 paper take up roller bizhub C250 C252 TN Tray2 separator roller 4038T2C127AA Tray 2 paper take up sensor PC9 PC Tray 2 vertical transport sensor PC8 PC N Tray2 paper take up roller 2 Q 9 3m 9 Vertical transport roller 2 LE Tray2 paper near empty sensor PC1 PC 4038T2C172AA Tray2 lift up motor M3 PC Tray2 vertical transport motor M2 PC Tray2 paper feed motor M
6. 106 Theory of operation ver 3 0 Aug 2006 20 Fusing section 20 3 6 Fusing roller small amount rotation control Leaving the fusing roller in low power mode for a long period of time will deform the pressing part of the fusing roller due to the heat and pressure Deformed roller surface may cause uneven gloss or other image troubles when printing images with high den sity high ID such as photographs Small amount rotation control is to prevent such image troubles standby state or standby mode lasts for over three hours the fusing roller will be rotated one tenth of a single rotation bizhub C250 C252 20 3 7 Paper winding detection control La Q Y O N i oj IS a o Pressing position 4038T2C203AA 5 With the roller fusing type fusing unit paper jam may cause the paper to wind itself to the fusing roller This winding detection control monitors the paper to detect when it winds itself to the roller lightly so that it can be removed easily A Operation t detects the winding before the roller is completely covered the length of the paper wound to the roller is shorter than the circumference of the roller The back edge of the paper is sticking out from under the fusing unit and can be removed The paper may wind itself both on the
7. 9 B Finisher paper transport mechanism A motor is employed to transport paper onto the Finisher The Paper Sensor functions to detect a sheet of paper present in the Horizontal Trans port Unit Paper Sensor PC1 HO Entrance Motor M1 FN 23 5 Mechanical operations Theory of Operation Ver 1 0 Jul 2005 FS 501 I 8 5 E o Blank Page 24 KONICA MINOLTA SERVICE MANUAL THEORY OF OPERATION FS 514 PK 510 OT 601 2006 08 KONICA MINOLTA BUSINESS TECHNOLOGIES INC Ver 1 0 Revision history After publication of this service manual the parts and mechanism may be subject to change for improvement of their performance Therefore the descriptions given in this service manual may not coincide with the actual machine When any change has been made to the descriptions in the service manual a revised version will be issued with a revision mark added as required Revision mark To indicate clearly a section revised show to the left of the revised section A number within represents the number of times the revision has been made To indicate clearly a section revised show A in the lower outside section of the correspond ing page A number within 4 represents the number of times the revision has been made NOTE Revision marks shown in a page are restricted only to th
8. 95 19 3 1 Registration roller control 95 19 3 2 de tectiori uii certo ici aaaeaii 96 19 3 3 Deceleration control 97 20 FUSING eU i 98 20 1 Composition 98 20 2 IBIVOi az dere 100 20 3 101 20 3 1 Fusing roller drive 101 20 3 2 Heater lamp 103 20 3 3 Thermistor 103 20 3 4 Thermostat 104 20 3 5 Fusing roller pressure retraction 104 20 3 6 Fusing roller small amount rotation 107 20 8 7 Paper winding detection control 20 3 8 Fusing temperature control chart 20 3 89 Warm Up COMO rrr trn tiir 20 83 10 Temperature control during low power 109 20 8 11 Protecting from the abnormally high 110 20 3 12 Abnormally high temperature detection software protection 111 20 83 18 Abnormally high temperature detection hardware protection 111 Theory of
9. 25 8 Write section PH section Theory of operation ver 3 0 Aug 2006 8 2 2 Laser exposure process 1 Laser beam irradiated by the laser diode is reflected on the polygon mirror 2 The polygon mirror is a four faced mirror that rotates at high speed motored by the polygon motor The polygon mirror reflects the incoming laser beam in the main scanning direction and reflects it on the G1 lens 3 The G1 lens corrects the converging angle of the incoming laser beam and reflects it on the return mirror 1 Return mirror 1 reflects the laser beam collected by the G1 lens to the G2 lens 5 92 lens reflects the laser beam collected by the return mirror 1 on the return mirror 2 6 The return mirror 2 irradiates the laser beam came from G2 lens to the PC drum bizhub C250 C252 gt Polygon motor Laser diode SOS mirror I 8 5 Q Q Return mirror 2 G1 lens Return mirror 1 SOS sensor G2 lens 4038T2C028AA 8 2 3 Laser emission timing When a ready signal is detected after the lapse of a given period of time after the print cycle has been started a laser ON signal is output from the mechanical control board PWB M The laser ON signal triggers the firing of each laser light which illuminates the SOS Board via polygon mirror and G1 lens This generates an SOS signal This SOS start of scan signal unifies the t
10. 2 1 Type Type Desktop Console 1 scanner printer Copying system Electrostatic dry powdered image transfer to plain paper Printing process Tandem type indirect electrostatic recording system PC drum type OPC organic photo conductor Scanning density Equivalent to 600 dpi Exposure lamp White rare gas fluorescent lamp 30 W Platen Stationary mirror scan Original scanning Scanning in main scanning direction with a CCD one shot reading system Registration Rear left edge Paper feeding system Multiple Bypass 100 sheets standard Tray1 250 sheets Three way system Tray2 500 sheets Exposure system Four multi array PH unit system Two beam LD polygon mirror exposure system for Y M and 8 beams in total Exposure density Equivalent to 1800 dpi in main scanning direction x 600 dpi in sub scanning direction Developing system HMT developing system Charging system DC comb electrode Scorotron system with electrode cleaning function manual Electrode cleaning function is mounted only on the K imaging unit Image transfer system Intermediate transfer belt system Paper separating system Selection either application of nonwoven fabric bias or resistor grounding lower pressure paper separate claws Fusing system Roller fusing 1 Only when the optional paper feed cabinet desk is installed Theory of operation ver 3 0 Aug 2006 2 2 Functions 2 Product specifica
11. 4038T2C008AA Printer head Polygon motor 5 2 a i 5 9 a SOS mirror Laser diode SOS sensor 4038T2C034AA 24 Theory of operation ver 3 0 Aug 2006 8 Write section PH section 8 2 Operation 8 2 1 Outline e 4types of the printer head are used for exposure process The surface of the photo conductor is irradiated with a laser light and an electrostatic latent image is thereby formed The polygon mirror has four faces The machine uses a two beam array LD to inhibit the speed of the polygon mirror from increasing because of the decreased number of faces the polygon mirror has as compared with the conventional models The two beam array LD consists of two LD elements arranged vertically Two lines are scanned with two laser beams emitted from these two LD elements through a single face of the polygon mirror bizhub C250 C252 Transfer belt e S i 9 Laser diode Surface of the PC drum BeamA xus Beam lines ze LJ ed one scan Beam B 7 Polygon X miror ae Direction 1 Direction of of rotation 1 rotation of of the PC the PC drum drum G1 lens 1 1 02 lens Return mirror 2 Return mirror 1
12. 9 Paper detection sensor 4510T2C505AA 5 Operations Theory of operation ver 1 0 Aug 2006 MT 501 I 8 5 E o Blank Page SS SS KONICA MINOLTA SERVICE MANUAL THEORY OF OPERATION 50 503 2006 08 KONICA MINOLTA BUSINESS TECHNOLOGIES INC Ver 1 0 Revision history After publication of this service manual the parts and mechanism may be subject to change for improvement of their performance Therefore the descriptions given in this service manual may not coincide with the actual machine When any change has been made to the descriptions in the service manual a revised version will be issued with a revision mark added as required Revision mark To indicate clearly a section revised show to the left of the revised section A number within represents the number of times the revision has been made To indicate clearly a section revised show in lower outside section of correspond ing page A number within represents the number of times the revision has been made NOTE Revision marks shown in a page are restricted only to the latest ones with the old ones deleted When a page revised in Ver 2 0 has been changed in Ver 3 0 The revision marks for Ver 3 0 only are shown with those for Ver 2 0 deleted When a page revised in Ver 2 0 has not been changed in Ver 3 0 The rev
13. 7 H 5 2 8 Shifter drive 7 8 5 2 4 Paper empty detection 8 Theory of Operation Ver 1 0 Jul 2005 PC 403 8 E Q Q Blank Page ij Theory of Operation 1 0 Jul 2005 1 Product specification Outline 1 Product specification amp Name Large Capacity Cabinet Type Front loading type LCC Installation Desk type Document Alignment Center B Paper type Type Plain paper 60 to 90 g m 16 to 24 Ib Recycled paper 60 to 90 g m 16 to 24 Ib Size A4 8 5 x 11 Capacity 2500 sheets 80 g m 21 25 Ib C Machine specifications Power Requirements DC 24 V 10 supplied from the main body DC5V 5 Max Power 45 W or less Consumption Dimensions 570 mm W x 548 mm D x 263 mm H 22 5 inch W x 21 5 inch D x 10 25 inch H Weight 26 0 57 25 Ib D Operating environment Conforms to the operating environment of the main body NOTE These specifications are subject to change without notice 5 A 2 Paper Feed Path 2 Theory of Operation Ver 1 0 Jul 2005 Paper Feed Path Main body PC 403 Sub tray 4061t1c101aa Move from sub
14. 9 Theory of Operation Ver 1 0 Jul 2005 JS 601 8 E Q Q Blank Page ij Theory of Operation Ver 1 0 Jul 2005 1 Product specification Outline 1 Product specification A Type Name Job separator Installation Fixed to Finisher Document Alignment Center B Functions Modes Non Sort in the fax or printer output mode C Paper type 11x17 Type Size Weight Tray Capacity 100 sheets ABS to 4 8 1 2 x 11 80 g m 21 1 4 Ib Plain paper 5 1 2 x 8 1 2S to 60 to 90 g m 50 sheets 16 to 24 Ib except A4 8 1 2 x 11 80 g m 21 1 4 Ib Height up to 28 mm 1 Ib D Machine specifications Power Requirements DC 5 V DC 24 V supplied from Finisher Dimensions 341 mm W x 527 mm D x 149 mm H 13 1 2 inch x 20 3 4 inch D x 5 3 4 inch H Weight 1 75 kg 3 75 Ib E Operating environment Conforms to the operating environment of the main body NOTE These specifications are subject to change without notice e 1 Product specification Theory of Operation Ver 1 0 Jul 2005 o Blank Page Theory of Operation Ver 1 0 Jul 2005 2 Overall composition Composition Operation 2 Overall composition w S o E 5 6 1 Job Tr
15. Q 9 9 Laser diode forced lighting 2nd image transfer pressure retraction motor M5 2nd image transfer pressure position sensor PC7 Tray 1 paper feed clutch CL2 Registration roller clutch CL1 Power supply cooling fan motor 1 M8 Power supply cooling fan motor 2 M9 Cooling fan motor 1 M12 Ozone ventilation fan motor M14 4038T2E214AA 15 6 Overall composition Theory of operation ver 3 0 Aug 2006 6 2 Control block diagram N N E a IR Section del amp CCD Sensor Inverter Exposure Lamp FL201 a Board Board PU201 Scanner Moter Drive Automatic t Board PWB IC Document t Feeder DF 601 Image Processing Board PWB A Scanner Moter M 201 gt Control Panel UN 201 t Printer Section Slide Interface Mechanical E Board PWB SIF Paper Take up 5 oar Transport E 2 PWB M S MFP Control Board CPU lt Process PWB MFP Fusing 8 Image Processing 1 1 d Interface Board PWB M 12 PH Unit Y M C K lt Control System Line 1 1 1 lt Image Bus Line Finishing Paper Source Automatic Duplex Option Option Unit AD 503 4038T2E213AA 16 Theory of operation v
16. i 9 nm oj o Basic paper interval list Mode System Group Paper Mode System Group Paper speed interval speed interval A1 263 12 mm A1 263 12 mm A2 268 64 mm A2 268 64 mm Plain paper B 358 80 mm 359 72 111 mm s OCEAN OHP transpar 55 5 mm s S SRI D 493 12 mm encies D 493 12 mm color E 517 04 mm E 517 96 mm F Paper length F Paper length 81 12 mm 61 80 mm When the paper interval calculated by PPM control is larger than the one calculated by best paper interval the one calculated by PPM control will be used 79 bizhub 250 252 I 8 o fe 6 16 Paper feed section B PPM control It prevents the temperature at the edge of the fusing roller from increasing due to the multiple printing with small size paper It sets the appropriate paper interval pitch according to the paper size and mode Proper paper interval will be set so the fusing parts will not be damaged and still assures sufficient fusing ability Paper interval group for PPM control Theory of operation ver 3 0 Aug 2006 Paper length Paper width Paper size Paper size INVOICE POSTCARDS 8 A5 B5 QUART A1 G LETTER 5 A4 POSTCARDS S A2 INVOICE S LETTER INVOICE
17. 17 FS 603 2 S g Q E 5 6 5 Operation Theory of Operation Ver 1 0 Jul 2005 5 3 3 Staple operation After the paper stacking and alignment operation on the Finishing Tray have been com pleted a stack of paper is taken up with the Upper and Lower Exit Rollers by moving the Swing Guide down with the Paddle Motor rotating in the reverse direction Stapling is performed by moving the Staple Unit according to the specified stapling posi tion However if stapling is made at one place at the rear side it is made at the stand by position without movement of the Stapler Unit If the Staple Unit is moved toward the front side the Finishing Tray Stopper is lowered Paper Swing Guide Upper Exit Roller Finishing Tray Stopper CS 4583M620AA Lower Exit Roller Staple Unit 18 Theory of Operation Ver 1 0 Jul 2005 5 Operation 5 3 4 Staple unit The Stapling operation is accomplished by a Cam rotated once with the Staple Folding Motor The Home position of this Cam is detected with the Staple Drive Home Position Sensor If the Staple Drive Home Position Sensor is OFF the Staple Folding Motor rotates in the forward direction until the Sensor is blocked or the signal is ON which designates that the position of the Cam is ready for the next stapling operation The Staple Detecting Sensor detects if the Staple Cartridge is in the Unit and if the sta
18. 9 FS 603 amp S Q 5 5 6 4 4 Drive Theory of Operation 1 0 Jul 2005 Exit Motor M3 FN Slide Motor M8 FN Shift Motor M6 FN Paddle Motor M2 FN Transport Motor M1 FN Entrance Motor M9 FN 4583t2c002aa Rear Aligning Motor M5 FN Front Aligning Motor M4 FN Theory of Operation Ver 1 0 Jul 2005 5 Operation 5 Operation 5 1 Transport Section 5 1 1 Paper path switching mechanism FS 603 The path along which the paper is transported is selected with the Entrance Switching Solenoid During a 2 sided print mode the solenoid is energized to feed the paper into the lower path and then feed it back to the main body Ina 1 sided print mode and when a 2 sided printed page is fed in the 2 sided print mode the Entrance Switching Solenoid is deenergized so that the paper can be trans ported to the Finisher 4583M001CA Entrance Switching Solenoid SL1 HO e S e i 9 Solenoid Energized M Solenoid Deenergized 4583M501AA 5 Operation Theory of Operation Ver 1 0 Jul 2005 5 1 2 Finisher paper transport mechanism Drive from the Transport Motor turns the Transport Roller to transport paper fed from the main body onto the Finisher The Transport Roller on the
19. amp S g Q E 5 6 24 Theory of Operation Ver 1 0 Jul 2005 5 Operation C Booklet Transport Next the stack of paper that was stapled is transported to the paper folding exit position with the Transport Rollers The Paper folding exit position is the position where the cen ter of the paper where stapled is of the same height as that of the Paper Pressure Plate and nip area of the Folding Rollers FS 603 Upper Transport Roller Paper Pressure Plate 2 Q 9 9 Lower Transport Roller Folding Roller 4583M628AA 25 FS 603 2 S g Q E 5 6 5 Operation Theory of Operation Ver 1 0 Jul 2005 D Folding exit The Paper Pressure Plate presses the center of the paper to transport the paper toward the Paper Folding Rollers Then the Paper Folding Rollers take up and fold the paper and feed the stack of paper onto the 2nd Paper Exit Tray through the Folding and the Booklet Exit Rollers Paper Pressure Plate 4583M629AA Booklet Exit Roller Folding Roller 26 Theory of Operation Ver 1 0 Jul 2005 5 Operation 5 4 3 Folding mechanism The Paper Folding Mechanism consists of the Folding Rollers and Paper Pressure Plate They are driven by the Staple Folding
20. 10 3 2 PC drum phase control Uneven eccentricity of the gears a drive source of PC drums causes unstable rotation of the coupled PC drums For phases control of PC drums when the PC drums start rotat ing change the rise timing between the color developing motor and the main motor to adjust phase between both 36 Theory of operation ver 3 0 Aug 2006 10 Photo conductor section 10 3 3 PC drum small amount rotation control Humidity around the IU can produce a difference in sensitivity among different PC drums This could lead to drum memory allowing black bands to occur in the image In addition ozone stagnant in areas near the PC drum charge corona reduces sensitivity of the PC drums causing white bands to occur in the image To prevent these image problems that the PC drum is turned at regular intervals to keep the surface sensitivity uniform as temperature and humidity change A PC drum small amount rotation timing When ten or more are printed by the accumulation this operation is made during the waiting after completion of printing operation Small amount rotation time changes according to accumulated time of the PC drum rota tion and interior temperature PC drum 37 bizhub C250 C252 e S i 9 11 Charge corona section Theory of operation ver 3 0 Aug 2
21. 49 14 Transfer corona section nte st torn iterata innt 50 14 1 Composition 14 1 1 1stimage transfer 50 14 1 2 2nd image transfer 51 Theory of operation ver 3 0 Aug 2006 142 52 14 2 1 1stimage transfer 52 14 2 2 2nd image transfer 53 14 3 M 54 14 3 1 Transfer belt drive 54 14 3 2 1stimage transfer roller 54 14 3 8 2nd image transfer roller pressure mechanism 57 14 3 4 IDC sensor shutter mechanism 58 14 8 5 ATVC auto transfer voltage control 59 14 3 6 Transfer belt cleaning ssri iriiria iiias riasin 60 14 3 7 Reversing control of the transfer belt 60 14 3 8 2nd image transfer roller 61 14 8 9 Charge neutralization and separation 62 14 3 10 Detection of new transfer belt 62 14 8 11 Pressure retraction control during ACS 63 15 Toner collecting section reine reinen 65 15 1 CO
22. 5 Composition Operation 3 ero seres M T 7 4 Drive 5 A 9 51 Transport Sectio 9 5 1 1 Paper path switching 9 5 1 2 Finisher paper transport mechanism 10 5 2 Finishing tray mecharnism rnnt 11 5 2 1 Paper stacking with finishing 11 5 2 2 Aligning mechanism 5 2 8 Offsetting operation 5 2 4 Exiting operation 5 2 5 Group mode Sort mode ree e ea rs 13 5 2 6 OffSet MOC c 14 5 2 7 N 14 5 2 8 Center Staple amp Fold mode sse 15 SCENE M 16 5 3 1 Types and positions of staples 16 5 3 2 Staple unit moving 17 5 3 3 Staple operatiOli iicet eii cmn de 18 5 3 4 esinin aa a ii 19 5 3 5 Staple unit moving control sees nennen 20 5 3 6 1st Paper Exit Tray mechanism 21 5 4 Center Staple amp Fold Section sse 22 5 4 1 2nd paper Exit Tray 5 4 2 Transport operation in Center Staple amp Fold
23. 501 Ice Ec Composition Oper tion 1 1 tet chides eet Hence t SE Leone SD 503 Ini ERN Compo sition ODeration oer Ys JS 601 Composition Operation FS 603 eni Y Composition Operation esee PK 501 PK 4 PK 131 Oullifi ete aie ocean ine eee aii SAFETY AND IMPORTANT WARNING ITEMS SAFETY AND IMPORTANT WARNING ITEMS Read carefully the Safety and Important Warning Items described below to understand them before doing service work IMPORTANT NOTICE Because of possible hazards to an inexperienced person servicing this product as well as the risk of damage to the product KONICA MINOLTA BUSINESS TECHNOLOGIES INC hereafter called the KMBT strongly recommends that all servicing be performed only by KMBT trained service technicians Changes may have been made to this product to improve its performance after this Service Manual was printed Accordingly KMBT does not warrant either explicitly or implicitly that the information contained in this Service Manual is complete and accurate The user of this Service Manual must assume all risks of personal injury and or damage to the product while servicing the product for which this Service Manual is intended Therefore this Service Manual must be carefully read before doing ser
24. ice I aD UM UMP I III 30 7 2 1 30 8 Q Q fe Theory of operation ver 1 0 Aug 2006 1 Product specifications Outline 1 Product specifications 1 1 FS 514 A Type Name Multi staple finisher built into the copier Installation Installed in the copier Document alignment Center Consumables Staples B Functions Modes mounted Sort group sort offset group offset sort stable and punch when PK 510 is C Paper type 1 Non sort sort group paper 1200 mm or under 33 75 to 42 5 Ib Type Size Weight Max capacity Exit 200 sheets tray1 d 50 to 90 g m2 45 8 118 1000 dee 13 251024 0 or less sheets tray2 B4 8 x 14 500 65 55 5 B5S B5 greater sheets B6S A4S A4 B4 Government AaWide 91 to 210 g m standard 1 8 1 8 5 x81 24 25 to 55 75 lb postcards 5 1 2 x 8 1515 1 2 x 8 8 1 2 x 115 8 x 11 Envelope 143c17 OHP trans 121 18 z parencies Translucent 311 15 457 2 E 12 25 x 18 inch 20 sheets Label Mi Letterhead 90 mm x 139 7 mm s 3 5 x 5 5 inch 91 to 150 g m Thick paper 1 24 25 to 40 Ib 151 to 209 g m Thick paper 2 40 to 55 5 Ib 210 256 g m
25. 2 St 9 9 bizhub 250 252 8 Q Q iv Theory of operation ver 3 0 Aug 2006 UA o E A 84 17 2 85 17 2 1 Bypass paper take up control 85 17 2 2 Paper empty detection 85 17 2 8 Paper width detection 4 nnne 86 17 2 4 Bypass paper lifting motion 87 18 Bypass section bizhub 252 88 18 1 88 27 D Ir EHE 89 18 3 EDIT 90 18 31 Bypass paper take up control 90 18 3 2 Paper empty detection 90 18 3 3 Bypass paper lifting motion 91 18 3 4 size 92 19 Registration 94 19 1 94 19 2 Divo iac c ce 94 DE XEOIrCusm X
26. Stapling Point 11 4583 622 4583M623AA 4 I 8 5 Q Q lt For 2 point side stapling Operation gt The Staple Unit stays at the home or the rear side and then moves to the stapling posi tion at each of stapling operation The order of stapling is first the rear side and then the front side 2 Point Side Stapling Staple Unit Standby Position Stapling Position Entrance 2 4 Stapling Position Stopper 4583t2c003aa For 2 point Center stapling operation The 2 point center stapling operation is the same as 2 point side stapling 20 Theory of Operation 1 0 Jul 2005 5 Operation 5 3 6 1st Paper Exit Tray mechanism The 1st Paper Exit Tray is moved up or down by drive from the Shift Motor and the Exit Tray Sensor detects if the paper is stacked on the 1st Paper Exit Tray The Exit Tray Home Position Sensor detects if the 1st Paper Exit Tray is at its home posi tion If the paper is stacked on the 1st Paper Exit Tray home position is at the top side of paper and if not the home position is at the edge of the 1st Paper Exit Tray When the main power is turned ON the 1st Paper Exit Tray is returned to its home posi tion by drive of the Shift Motor After the
27. 4038POE505DA 6 3 Laser Caution Label A laser caution label is attached to the outside of the machine as shown below AER CAUTION VORSICHT ADVARSEL VARO CCM ED S A3ERTBV CET U NEBRRIU MAY LIT REN CLASS 38 INVISIBLE LASER RADIATION WHEN OPEN AVOID EXPOSURE TO THE BEAM KLASSE 3B UNSICHTBARE LASERSTRAHLUNG WENN ABDECKUNG NICHT DEM STRAHL AUSSETZEN KLASSE USYNLIG LASERSTRALING NAR DEKSEL PNES UNNG EKSPONERING FOR STR LEN AVATTAESSA OLET ALTTIINA LUOKAN 38 LASERSATEILYLLE ALA KATSO SATEESEEN ADVARSEL USYNLIG KLASSE LASERSTRALING VED ABNING UNDGA VARNING UDS ETTELSE FOR STRALING OSYNLIG LASERSTRALNING KLASS 3B NAR DENNA DEL AV OPPNAD STRALEN AR FARLIG FARRAR HI ORS AORE EUC 2319 4038P0C503DA S 16 SAFETY AND IMPORTANT WARNING ITEMS 6 4 PRECAUTIONS FOR HANDLING THE LASER EQUIPMENT When laser protective goggles are to be used select ones with a lens conforming to the above specifications When a disassembly job needs to be performed in the laser beam path such as when working around the printerhead and PC Drum be sure first to turn the printer OFF If the job requires that the printer be left ON take off your watch and ring and wear laser protective goggles A highly refle
28. 4038T2E502DA 115 bizhub C250 C252 2 Q 9 9 22 Image stabilization control Theory of operation ver 3 0 Aug 2006 22 2 Operation 22 2 1 IDC intensity control Controls changes in characteristics due to change with time and contamination of the transfer belt and IDC registration sensor part to part variations in the sensors and change of environment The intensity current value of the IDC registration sensor is adjusted on the surface of the transfer belt on which no toner sticks background level bizhub C250 C252 22 2 2 Max density control The developing bias Vdc is adjusted to control changes in the solid density resulting from variations in developing characteristics and IDC registration sensor intensity varia tions in sensitivity of the PC drum and changes in the environment durability and the amount of charge in toner Patterns are produced on the surface of the transfer belt and the IDC registration sensor detects the amount of toner sticking to them Referring to the detected data and the environment data taken by the temperature humidity sensors the developing bias value that results in the appropriate maximum density is calculated and stored in memory Thereafter the grid voltage Vg value including the background margin adjustment value is calculated and stored in memory 22 2 3 LD laser diode intensity adjust
29. 50 Theory of operation ver 3 0 Aug 2006 14 Transfer corona section 14 1 2 2nd image transfer section o N 9 m a S S 4038T2C117AA 4038T2C123AA IDC registration IDC registration sensor 2 SE2 sensor 1 SE1 2nd image transfer roller 2 7 Q 9 9 Temperature humidity sensor SES 4038T2C152AA 4038T2C106AA Temperature humidity sensor Shutter 2nd image transfer pressure position sensor PC7 IDC registration sensor 2 SE2 2nd image transfer pressure retraction motor M5 IDC registration sensor 1 SE1 4038T2C019DA 51 14 Transfer corona section Theory of operation ver 3 0 Aug 2006 14 2 Drive 14 2 1 ist image transfer section bizhub 250 252 Transfer belt I 8 e 4038T2C020DA 1st image transfer roller K Main motor M1 1st image transfer roller C Fusing drive 1st image transfer roller M motor M4 1st image transfer roller Y Retraction roller 1st image transfer pressure retraction clutch CL3 1st image transfer retraction position sensor PC6 4038T2C021DB 52 Theory of operation ver 3 0 Aug 2006 14 Transfer c
30. A CAUTION A ATTENTION CUIDADO A High Temperature Temp rature lev e Alta temperatura mm A VORSICHT PRECAUCI N A ATTENZIONE A 2 323 Hei e Oberll che jTemperalura alta Alta temperatura BA We sta The area around the Fusing Unit is extremely hot Touching any part other than those indicated may result in burns 4038P0C504DA CAUTION You may be burned or injured if you touch any area that you are advised not to touch by any caution label Do not remove caution labels If any caution label has come off or soiled and therefore the caution cannot be read contact our Service MEASURES TAKE IN CASE OF ACCIDENT MEASURES TO TAKE IN CASE OF AN ACCIDENT 1 If an accident has occurred the distributor who has been notified first must immediately take emergency measures to provide relief to affected persons and to prevent further damage 2 Ifa report of a serious accident has been received from a customer an on site evalua tion must be carried out quickly and KMBT must be notified 3 To determine the cause of the accident conditions and materials must be recorded through direct on site checks in accordance with instructions issued by KMBT 4 Forreports and measures concerning serious accidents follow the regulations speci fied by every distributor 5 20 Composition of the service manual This service manual co
31. D Operating environment Conforms to the operating environment of the main body NOTE These specifications are subject to change without notice 2 Paper Feed Path Theory of Operation Ver 2 0 Feb 2006 2 Paper Feed Path of lt Switchback to Body paper is fed into the main body again N 4066T1J500DA Theory of Operation 2 0 Feb 2006 3 Composition Composition Operation 3 Composition AD 503 Switchback section M 2 N N LN 15 Q 9 9 Transport section 4066T2C514DA 4 Drive Theory of Operation Ver 2 0 Feb 2006 4 Drive 4 4 Switchback Drive AD 503 Switchback Motor M1 DU Main Body 4066T2C517DA 2 S g Q 5 6 4 2 Transport Drive Duplex Control Board PWB A DU Duplex Unit Transport Roller 1 Duplex Unit Transport ad Roller 2 Duplex Unit Transport Motor M2 DU Duplex Unit Transport Roller 3 4066T2C515DA Theory of Operation 2 0 Feb 2006 5 Operation 5 Operation 5 1 Switchback mechanism 5 1 1 Switchback operation The Paper Exit Roller of the main body is used to subject the 1 sided print to a switch back sequence so that the 1 sided print is to be transported through the Duplex Unit Pap
32. Punch cam sensor PC500 Punch home position sensor PC600 Punch motor pulse sensor PC700 4349T2C526AA 28 Theory of operation ver 1 0 Aug 2006 6 Punch kit PK 510 6 2 4 Punch trash box full detection mechanism Punch trash produced as a result of punching operation is stored in the punch trash box The punch trash box is provided with the punch trash full sensor When a punch waste is detected the corresponding message is displayed on the control panel The punch trash full sensor is a reflector type sensor that detects height of the punch trash Punch trash full sensor also detects whether or not the punch dust box is mounted Punch dust full message will be displayed on the control panel when the punch trash box is not mounted Punch trash full sensor PC30 4349T2C527AA 29 FS 514 PK 510 OT 601 e S i 9 7 Output tray OT 601 Theory of operation ver 1 0 Aug 2006 7 Output tray OT 601 71 Composition FS 514 PK 510 OT 601 4349T2C531AA 7 2 Operation 7 2 1 Overview Mounting the optional output tray OT 601 provides a total of three exit trays The output tray is attached at different positions depending on whether options SD 503 MT 501 are mounted or not The capacity of each of the different trays depends on the specific positions they are attached When the short circuit co
33. Only PC 203 4061t2c001aa e S i 9 4 Drive system Theory of Operation Ver 1 0 Jul 2005 4 Drive system Selle Tray3 Paper Feed Motor M120 PC PC 103 PC 203 Tray3 Take up Motor M122 PC 4348 amp S g Q E 5 6 Tray3 Paper Feed Motor 120 lt PC 203 gt Tray3 Take up Motor M122 PC Tray4 Vertical Transport Motor M121 PC Tray4 Take up Motor M123 PC 4348M002AB Theory of Operation 1 0 Jul 2005 5 Operations 5 Operations 51 Paper Feed Section 5 1 1 Vertical transport drive mechanism The Paper Feed Motor drives the Pick up Roller and Paper Take up Roller to take up and feed a sheet of paper into the main body Then the Transport Roller Motor transports the paper through the vertical transport sec tion The Pick up Roller takes up sheets of paper and the Paper Take up and Separation Roll ers ensure that only one sheet of paper is separated and fed into the main body When the drawer is slid in the lever is pushed to lower the Pick up Roller The Lift up Upper Sensor then detects the upper limit position when the paper lifting plate is raised The Empty Sensor detects when paper in the drawer runs out The polyethylene sheet and Height difference of Guide Plate are reduces resistance between a curled shee
34. See _ KONICA MINOLTA SERVICE MANUAL bizhub C250 C252 This Service Manual is designed for machine with Firmware Card Ver G4 and onward 2006 08 KONICA MINOLTA BUSINESS TECHNOLOGIES INC Ver 3 0 THEORY OF OPERATION TOTAL CONTENTS SAFETY AND IMPORTANT WARNING 5 1 IMPORTANT NOTICE S 1 DESCRIPTION ITEMS FOR DANGER WARNING AND CAUTION SAFETY WARNINGS WARNING INDICATIONS ON THE MACHINE MEASURES TO TAKE IN CASE OF AN eor 5 20 Composition of the service C 1 Notation of the service manual C 2 bizhub C250 C252 main unit 1 Composition operation esee nennen enne 15 DF 601 Sai ox et tree eei tertie te beer des 1 Gomiposition OperatiOn cic cire ret ee rtt iere ee 5 PC 103 PC 203 Outline Composition Operation PC 403 1 3 AD 503 CUMIN eae MEER IM ED 1 Composition Operaltioh 5 c m a 3 FS 501 1 Composition Operation FS 514 PK 510 OT 601 1 Composition Operation trennen 9
35. The developing bias voltage Vdc is applied to the developing roller so that an adequate amount of toner is attracted onto the surface of the PC drum n addition to the negative DC component AC voltage is applied during development to help toner to be attracted more easily to the surface of the PC drum This AC component is applied only while development is taking place At any other timing only the DC Vdc is applied The developing bias Vdc is supplied from high voltage unit HV1 bizhub C250 C252 Developing bias terminal Pressure plate main body side hg 4038T2C035AA Pressure plate Developing roller Developing roller 2 7 Q 9 9 12 3 4 high grade micro toning development The machine employs the two component non contact development system With the HMT method the magnetic developer brush does not rub against the surface of the PC drum the images Accordingly sharper line images can be reproduced involv ing no uneven image density at the trailing edge or thin lines and achieving even finer reproduction of the solid image areas Developing roller png PC drum HO 4036ma2013cO 43 bizhub 250 252 I 2 w m 5 5 12 Developing section Theory of operation ver 3 0 Aug 2006 12 3 5 TCR sensor control The TCR sensor is
36. 5 Bypass paper feed clutch CL5 Bypass lift up sensor PC 14 Paper lifting cam OF Bypass paper pick up solenoid SL2 Main motor M1 Bypass paper take up roller 4039T2C116AA 84 Theory of operation ver 3 0 Aug 2006 17 Bypass section bizhub C250 17 2 Operation 17 2 1 Bypass paper take up control Start key ON Move to standby position bizhub C250 C252 Main motor M1 Bypass paper pick up solenoid SL2 Bypass lift up sensor PC 14 Bypass paper feed clutch CL5 4038T2C142AA 17 2 2 Paper empty detection The bypass paper empty sensor PC13 detects a paper empty condition in the bypass section Bypass paper empty sensor PC13 15 7 Q 9 9 4038T2C114AA When there is no paper When the paper is fully supplied 4038T2C182AA 85 17 Bypass section bizhub C250 Theory of operation ver 3 0 Aug 2006 17 23 Paper width detection The paper width detection resistor UN1 slides with the rack which moves simulta neously with the paper side guide plate The output value indicated by the paper width detection resistor determines the paper width Size error will be detected when the actual paper differs from the setting on the control panel When the paper width is not correct It will not start feeding paper but will display s
37. 6 3 Document exit mechanism sessi 6 3 1 Single sided document mode 11 6 3 2 Double sided document Mode 11 6 3 3 EXxit Opetation HOW MEET 12 6 4 Turnover mechanism two sided 13 6 5 Raised lowered position detecting 14 6 5 1 Document size detection 6 5 2 Raised lowered position detection Q Composition Operation Theory of Operation Ver 1 0 Jul 2005 DF 601 8 E Q Q Blank Page ij Theory of Operation Ver 1 0 Jul 2005 1 Product specifications Outline 1 Product specifications A Type Name Duplexing Document Feeder Paper Take Up Paper Take Up from top of stack Transport Endless Belt Transport Mode Type Turnover Loop Turnover Mode Paper Exit U turn Turnover Switchback U Turn Turnover Mode only 1 Sided Mode Installation Screw cramp to the main body Document Alignment Center Document Loading Face up B Functions Standard Mode 1 Sided Mode 2 Sided Mode Modes Thick Paper Mode 1 Sided Mode Mixed Original Detection Sided Mode 2 Sided Mode Mode C Paper type 1 Sid
38. Heating roller 9659 0969 qnuziq uoneJedo uonisoduo 100 Theory of operation ver 3 0 Aug 2006 20 3 Operation 20 3 1 Fusing roller drive control A Fusing roller speed change control 20 Fusing section The fusing roller heating roller fusing pressure roller is driven by the fusing motor M4 The fusing motor M4 drives the heating roller The fusing pressure roller rotates along with the heating roller e In order to avoid fusing error the rotation speed of the fusing roller is to be set to one of 2 levels according to the paper type or the print mode Paper type print mode Fusing speed mm sec Plain paper monochrome 111 Plain paper color 111 Thick paper 55 5 OHP transparencies 55 5 Control Fusing speed mm sec When checking the remaining paper 111 When the temperature of the fusing pressure roller reaches to the temperature the fusing drive motor starts rotating during warm up 111 Printing System speed 101 bizhub C250 C252 e S i 9 bizhub 250 252 2 S Q 5 6 20 Fusing section Theory of operation ver 3 0 Aug 2006 B Fusing loop control creating a paper loop the speed difference between the fusing and paper convey ance at 2nd transfer part will be adjusted It prevents the double tr
39. motor M5 2nd image transfer reverse bias 2nd image transfer reverse bias 4038T2C137AA 61 bizhub C250 C252 2 S Q 9 9 14 Transfer corona section Theory of operation ver 3 0 Aug 2006 14 3 9 Charge neutralization and separation of paper n order to remove the residual potential the paper with the 2nd image transferred the neutralization material is applied to the guide plate without contact after the 2nd image transfer roller In order to separate the paper from the transfer belt without fail after the 2nd image trans fer a transfer belt separation claw is mounted one point bizhub C250 C252 Separation claw Transfer belt 4 Charge neutralizing cloth 2nd image transfer roller 4038T2C173AA 14 3 10 Detection of new transfer belt unit I 8 5 Q Q 6 When new transfer belt unit is installed in the machine the counter is automatically cleared through new unit detection The new unit detection is made when the power switch is turned OFF and ON or the right door is opened and closed New unit detection timing operation Power OFF ON right door open Y close Transfer ATVC adjustment Y Y
40. 4 Punch Type Size Weight Punched holes Exit tray Exit Tray1 Plain paper os to 50 to 209 g m 234 Exit Tray2 Recycled paper 2 ix 47 13 25 to 55 5 Ib OT 601 MT 501 The punched holes is different because of the difference of area Theory of operation ver 1 0 Aug 2006 1 Product specifications D Stapling Staple filling mode Dedicated staple cartridge 5000 staples Staple detection Available Nearly Empty 20 remaining staples Back of the corner 30 degree A4 B5 B4 Front of the corner 30 degree 8 x 11 11x 17 Back of the corner Parallel A4S B5S A5 Front of the corner Parallel 8 x 115 8 1 2 x 14 45 4 B5S B5 B4 A5 8 x 115 8 5x 11 8 x 14 11 x 17 e LE o x 2 I En Stapling position Side Parallel 2 point Manual staple None E Hole Punch No of holes Metric 4 holes Inch 2 holes 3 holes Sweden 4 holes Punch dust full detection Available F Machine specifications DC 24 V supplied from the main unit DC 5 1 V generated by finisher Max power consumption 166 W or less 352 mm W x 558 mm D x 573 mm H 13 75 inch W x 22 inch D x 22 5 inch H Weight 33 2 kg 73 25 Ib Power requirements Dimensions G Operating environment Conforms to the operating environment of the main unit
41. Shown here are the different stapling positions used with the FS 601 Paper Size Metric area Paper Size Inch area Corner stapling Rear B5 B5S A4 A4S B4 A3 8 5x11 8 5x11S 8 5x14 11x17 Corner stapling Front 2 Point side stapling 2 Point center stapling A4S B4 A3 8 5x11 11x17 Corner stapling Rear Corner stapling Front gt gt I 40040082 40040081 5 2 Point side stapling 2 Point center stapling E 4 5 UH d x E 4 IN Y 8 C40040083AA C40040079BA 16 Theory of Operation 1 0 Jul 2005 5 Operation 5 3 2 Staple unit moving mechanism When the Power Switch is turned ON or the Front Door is opened and closed the Staple Unit is moved to the front side with the forward rotation of the Slide Motor and stopped at the position where the Slide Home Position Sensor located at the bottom of the Staple Unit is blocked by the Light Shield Plate The Staple Unit is moved to the rear side with the backward rotation of the Slide Motor and stopped at its standby position This standby position is determined by the number of pulses input to the Slide Motor since it is a stepping type motor FS 603 Staple Unit Shield Plate 2 Q 9 9 ide Home Position Sensor PI18 FN 4583M619AA Rear Side Slide Motor M8 FN
42. amp S Q 5 6 Exit roller motor M10 Exit roller Storage paddle Paper 9J08T2007DA Exit paddle Exit motor M4 14 Theory of operation ver 1 0 Aug 2006 5 Operations 5 2 Elevator section 5 2 1 Elevator mechanism The elevator mechanism is operated to select a specific exit port thereby feeding the paper out onto a specific exit tray FS 514 PK 510 OT 601 Elevator motor M11 4349T2C508AA 5 2 2 Elevator tray ascent descent 2 7 Q 9 9 The elevator tray is moved up or down by the elevator motor that turns forward or back ward to drive the front and rear belts The elevator tray lower limit sensor detects the elevator tray at its lower limit position Elevator tray switch is mounted for preventing the elevator tray s overrun for both upper and lower parts The shutter is mounted for preventing the hand from being caught at the exit when the tray moves up and down The shutter detect switch is mounted for preventing the hand from being caught when the shutter opens or closes Elevator tray switch 53 Elevator tray lower limit sensor PC13 4349T2C515AA 15 5 Operations Theory of operation ver 1 0 Aug 2006 5 2 3 Tray position detection mechanism The tray moves
43. 23 75 inch W x 23 75 inch D x 36 75 inch H Weight 41 6 kg 91 75 Ib G Operating environment Conforms to the operating environment of the main body NOTE These specifications are subject to change without notice e e LL 2 Paper Feed Path Theory of Operation Ver 1 0 Jul 2005 2 Paper Feed Path 2 1 Output the 1st paper exit tray S Aligning Offset Staple Transports to the punch position Transports to the Finishing tray Transportation from Main Body Output to 1st Paper Exit Tray 4583t1c001aa Theory of Operation Ver 1 0 Jul 2005 2 Paper Feed Path 2 2 Output the 2nd paper exit tray Transports to the Finishing tray e e Aligning Paper stack Transportation from Main Body 4583t1c002aa Transports to the center staple position Transports to the folding position Output to 2nd Paper Exit Tray 2 Paper Feed Path Theory of Operation Ver 1 0 Jul 2005 E Theory of Operation 1 0 Jul 2005 Composition Operation 3 Composition 3 Composition Staple Section Finishing tray Exit tray section Punch section Option Transport section Center Staple amp Fold section 458312 001 FS 603 2 Q 9
44. Thick paper 3 55 75 to 68 Ib Long size 210 mm to 297 mm x 127 to 160 g m Long size paper is available only for non sort mode E e ui LE 2 x 2 SE 1 Product specifications Theory of operation ver 1 0 Aug 2006 2 2 Sort offset group offset 9 Type Size Weight Max capacity io Exit x A5 B5S B5 A4S A4 B4 tray1 200 sheets Car 8 x 118 8 x 11 50 to 90 g m AAS 8 118 1000 paper 8 x 14 11 x 17 13 25 to 24 Ib Exit or less sheets Max 297 mm x 431 8 mm tray2 8 x 14 500 11 75 x 17 inch greater sheets Min 182 mm x 148 5 mm 91 to 256 g m i 7 25 x 5 75 inch lt 24 25 to 68 Ib 3 Sort staple 3 No of sheets Type Size Weight Max capacity to be stapled A5 B5S B5 A4S A4 B4 Exit 200 sheets Plain A3 tray1 paper 8 2 118 8 X11 goo go gim 45 8 x 115 1000 us Recycled 13 25 to 24 Ib Exit orless sheets 297 431 8 iav 3 P Mm ray2 B4 8 1 3 x 14 500 11 75 x 17 inch or greater sheets 182 148 5 Thick mm 91 to 120 g m 30 paper 7 25 x 5 75 inch 24 25 to 32 Ib sheets 1 The number of sheets to be stapled is limited for high density images Color wise 20 sheets x 20 sets 2 Only for north America 3 Only for the 8 x 14 or greater paper
45. 2 rentrer rr 15 5 2 2 Elevator tray 15 5 2 3 Tray position detection mechanism 16 5 2 4 Shutter open close mechanism 5 3 Paper aligning section 20 5 3 1 Paper aligning mechanism sub scan direction 20 5 3 2 Paper aligning mechanism main scan direction 21 5 3 3 Exit MECHANISM p 22 5 4 Staple section cicer etn tur ba oc E LX Ra a era ER HA 24 5 4 1 Stapling mechanism sss 24 5 4 2 Stapling unit moving mechanism essen 25 5 4 8 Stapling position nennen 25 5 4 4 Staple sheet empty detection 26 FS 514 PK 510 OT 601 E S S St 9 9 Theory of operation ver 1 0 Aug 2006 2 6 Punch kit PK b10 eti iicet t 27 E 61 gt 27 5 62 Operation IM 27 hc 6 2 1 Skew correction 27 6 2 2 Punch mechanism 28 2 6 2 3 Punch status detection 28 6 2 4 Punch trash box full detection mechanism 29 7 Oultput tray OT601 sedi Hele naa eee ea 30 T MEC uon L 30 72
46. 20 3 15 Detection of a new fusing unit When a new fusing unit is installed in the machine the life counter is automatically cleared through the machine s capability of detecting a new fusing unit The new fusing unit will be detected when the sub power is ON 112 Theory of operation ver 3 0 Aug 2006 21 Paper exit section 21 Paper exit section 21 4 Composition bizhub C250 C252 2 1 Fg p 4038T2C120AA Paper exit roller 2 4038T2C130AA f P it roller 1 E Paper exit roller 2 8 1 Exit sensor PC2 Charge neutralizing brush ay 2 4038 2 192 113 Theory of operation ver 3 0 Aug 2006 21 Paper exit section 9 21 2 Drive D SY 4038T2C036DA Paper exit roller 1 Paper exit roller 2 9659 0969 qnuziq uonejedo uonisodujo 114 Theory of operation ver 3 0 Aug 2006 22 Image stabilization control 22 1 Overview 22 Image stabilization c
47. 4th set 2 2nd set E 1st set x 4583M609AA Paper Transport Finishing Tray Shifted with the Aligning Plate for each job 1st Paper Exit Tray 5 2 7 Staple Mode n the Staple Mode when one complete set of prints is fed out onto the Finishing Tray stapling is performed A stack of stapled paper is then fed out onto the 1st Paper Exit Tray Paper Transport Finishing Tray Be Stapling for one set of prints 1st Paper Exit Tray 14 4583M610AA 4583M611AA Theory of Operation Ver 1 0 Jul 2005 5 Operation 5 2 8 Center Staple amp Fold mode In Staple section A stack of paper fed onto the Finishing Tray is stapled at two places and then transported to the Fold Section The paper transported to the Fold section is folded and then fed out onto the 2nd Paper Exit Tray The maximum number of the Center Staple amp Fold Black copy 2 to 15 sheets Max 60 pages Other copy 2 to 10 sheets Max 40 pages FS 603 2 Point center stapling Fold section 2 Q 9 9 4583M612AA 4583M613AA Paper Transport Finishing Tray 2 Point center stapling Fold Section Folding 2nd Paper Exit Tray 15 5 Operation Theory of Operation Ver 1 0 Jul 2005 5 3 Staple unit 5 3 1 Types and positions of staples
48. 55 5 to Paper Size 45 11S 8 1 2 x 11 to 11 x 17 Manual Staple None E Sort and staple capacity 1 Stacking with no stapling with the same size paper 80 g m Determined by the item whose value is reached first among number of stacked paper stacked height or mass of stack Determined by the stacked height when stacking with stapling and no stapling mixed Number of stacked paper FD No of Sheets A4S 8 1 2 x 118 or smaller 1000 sheets 8 1 2 x 14 or larger 500 sheets Stacked height FD Height AAS 8 1 2 x 118 or smaller 150 mm 8 1 2 x 14 or larger 75 mm Mass of stack FD Mass AAS 8 1 2 x 118 or smaller correspond to 1000 sheets B4 8 1 2 x 14 or larger correspond to 500 sheets 2 Stacking with stapling Reference Actual value Determined by number of Sets or number of Sheets based on number of bindings Number of stacked paper No of Sheets to be Stapled No of Sets No of Sheets 2 pages 100 sets 200 Sheets 3 to 5 pages 80 sets 400 Sheets 6 to 10 pages 60 sets 600 Sheets 11 to 20 pages 40 sets 800 Sheets 21 to 30 pages 33 sets 1000 Sheets Theory of Operation Ver 1 0 Jul 2005 1 Product specification F Machine specifications Power Requirements DC 24 V supplied from the main body DC 5 V generated by Finisher Max Power Consumption 63 W or less
49. Check transfer belt unit being Image stabilization mounted Y Y Initial operation of the transfer Check detection of the new unit belt y Life counter is cleared 62 Theory of operation ver 3 0 Aug 2006 14 Transfer corona section 14 8 41 Pressure retraction control during ACS mode The pressure retraction of the 1st image transfer roller is controlled by the number of multiple copies for the monochrome original during multi copy cycle so it promotes the high productivity and extends the consumables life ACS auto color selection bizhub C250 C252 A Operation ACS control starts counting the number of multi copies of the monochrome original when switched from the color original to the monochrome original When the number of multi copies is as specified or under The monochrome printing will start with color mode with the 1st image transfer roller being pressed IU Y M C does not develop or transfer the image but it rotates when the pressed transfer belt rotates The transfer belt being pressed saves time since the 1st image transfer roller does not need to be retracted When the number of multi copies is as specified or over The monochrome printing will start when the color mode is complete and the 1st image transfer roller Y M C is retracted to be switched to the monochrome mode The transfer belt being retracted prevents IU to be wasted by useless rotation Number of mu
50. Table 2 Original size detection CCD width mm sensor 2 143 153 187 200 213 220 9 225 261 5 274 7 284 4 284 5 OFF OFF 8 ass Bss teks ass S Bs 16K Letter a4 5 ON OFF FLS FLS FLS E 5 11 17 3 Option 8 Inch areas Table 1 Original size CCD width mm detection sensor 1 144 7 220 9 221 0 PC203 OFF Invoice S Letter S Letter ON Legal 11x17 Table 2 Original size detection CCD width mm sensor h 2 143 153 187 213 220 9 225 262 284 4 284 5 OFF OFF Invoice 55 5 A4S Letter S 5 4 ON OFF FLS FLS FLS OFF ON 4 11x17 A3 Option 22 Theory of operation ver 3 0 Aug 2006 7 Scanner section IR section B Detection timing Validates the original length Validates the original size Original size sensors 1 2 PC204 bizhub C250 C252 Original cover angle sensor PC202 Exposure lamp FL201 Scanner motor M201 Size reset switch S201 4037T2C563AA i e S e i 9 23 8 Write section PH section Theory of operation ver 3 0 Aug 2006 8 Write section PH section 81 Composition bizhub C250 C252
51. The revision marks for Ver 2 0 are left as they are 2005 07 1 0 Issue of the first edition Date Service manual Ver Revision mark Descriptions of revision Theory of Operation 1 0 Jul 2005 CONTENTS 5 x PK 501 PK 4 PK 131 i Outline 1 Product Specification e 1 Composition Operation 2 Overall COMpOSION s acier er eria AN iaaa 3 3 Mechanical operations rrr ones 4 3 1 Punching operation 3 2 Side registration operation E S S Q 9 9 Theory of Operation Ver 1 0 Jul 2005 LE L Md b d L0S Md Theory of Operation 1 0 Jul 2005 1 Product specification Outline 1 Product specification A Functions x x e x No of Holes optional Metric 4holes Inch 2holes 3holes B Paper type No of Sheets Type Size Weight Tray Capacity Exit Tray to be Stapled 4 holes A4 A3 8 1 2 x 11S 8 1 2 x 11 8 1 2 x 14 11x17 8 1 2 x 11 11x17 60 to 209 g m 16 to 55 1 2 Ib Plain Paper 2 holes Thick Paper Elevator Tray 3 holes C Machine specifications Power Requirements Supplied from FS 603 90 mm W
52. releasing the pressure lever will press the 2nd image transfer roller to the transfer belt 3 Atthis time the 2nd image transfer pressure position sensor detects whether the 2nd image transfer roller is located at the pressure position 4 The cam will rotate half way when the motor turns ON again Moving the pressure lever down will move the 2nd image transfer roller to the retraction position and will stop 2nd image transfer pressure Pressure lever retraction motor M5 e S i 9 2nd image transfer Cam pressure position sensor PC7 4038T2C022DA Drive roller When pressed When retracted 2nd image transfer roller Pressure lever 4038T2C167AA 4038T2C168AA Operation timing Start key ON Paper moves past 2nd image transfer roller Main motor M1 2nd image transfer pressure retraction motor M5 2nd image transfer pressure position sensor PC7 4038T2C136AA 57 14 Transfer corona section Theory of operation ver 3 0 Aug 2006 14 3 4 IDC sensor shutter mechanism The IDC sensor can be contaminated with toner since it is located under the transfer belt There is a shutter mechanism provided for the sensor to prevent it from being contami nated The shutter opens and closes in synchronism with the pressure and retraction motion of the 2nd image transfer roller The cam will press the pressure l
53. 2 0050 18 Theory of operation ver 3 0 Aug 2006 7 Scanner section IR section 7 8 Operation 7 3 1 Scan and exposure lamp control A When the power is ON 1 Exposure unit moves from the home position to the shading position under the shading correction sheet and stops in scanning direction 2 The gain value of the CCD sensor output voltage is adjusted for R G and B 3 shading correction is made 4 When the adjustment is complete the exposure unit moves from the shading posi tion to the home position and stops in returning direction bizhub C250 C252 The same operation is performed for the auto and manual exposure control Home position Shading position Scanning direction me Returning direction S a t 2 e S i 9 4038T2C148AA Home position Shading position lt Gain adjustment and shading correction Exposure lamp FL201 ON Scanner movement I1 4038T2C149AA 19 7 Scanner section IR section Theory of operation ver 3 0 Aug 2006 B When the start key is pressed 1 Turning the start key ON will turn the exposure lamp ON at the front edge of the image The scanner cooling fan motor M202 will rotate 2 The exposure unit will move from the home position to the shading position in scanning direction Gain as well as shading will be adjusted
54. 2 to 15 sheets 11 17 Stapled 6 to 15 sheets Max 60 pages 20 sets Other copy No of Sheets to be 2 to 10 sheets Stapled 2 to 5 sheets Max 40 pages D Stapling Staple Filling Mode Dedicated Staple Cartridge Mode 5000 staples Staple Detection Available Nearly Empty 40 remaining staples Rear Parallel 1 point B5S B5 to Front Parallel 1 point 8 5 x 118 8 5 x 11 to 11 x 17 Stapling Position Side Parallel 2 points Center Parallel 2 points Manual Staple None Folding Mode Roller Pressure Folding Folding Position Center of Paper Theory of Operation Ver 1 0 Jul 2005 E No of sheets to be stapled sort staple 1 45 8 5 x 11S or smaller 1 Product specification No of Sheets to be No of Sets Stapled Rear Parallel Center Parallel Front Parallel 2 100 40 40 3to5 80 40 40 6 to 10 60 40 40 11 to 20 30 30 30 21 to 30 30 30 30 31 to 50 30 sets or 1000 sheets 2 8 5 x 14 or larger No of Sheets to be No of Sets Stapled Rear Parallel Center Parallel Front Parallel 2 100 50 50 3to5 80 40 40 6to 10 40 40 40 11 to 20 30 sets or 1000 sheets 21 to 25 F Machine specifications Power Requirements DC 24 V supplied from the main body DC 5 V generated by Finisher Max Power a 65 W or less Consumption Dimensi ns 601 mm W x 603 mm D x 933 mm H
55. 232 C board will turn the heater lamp relay of the Fusing pressure power unit OFF to shut power off for each roller thermistor 2 THS heater lamp B Heater lamp relay OFF detection control The thermistor detects the comparator and turns heater lamp relay OFF When the heater lamp relay turns OFF it stays OFF When the heater lamp relay stays OFF the OFF signal will be entered When the OFF signal is entered and stays for more than specified period of time it is judged to be the fusing unit abnormally high temperature heating heater C When to start controlling t always watches the heater lamp relay OFF signal 111 bizhub 250 252 I 8 5 o s 6 20 Fusing section Theory of operation ver 3 0 Aug 2006 20 3 14 High temperature error detection thermostat protection When the software protection or hardware protection control is not executed due to the thermistor malfunction etc power for each heater lamp will be shut off by heating ther mostat fusing pressure thermostat Roller surface temperature s Thermostat Symbol Rated temperature E presumption figure Heating thermostat TS1 179 C About 350 C Fusing pressure thermostat TS2 171 C About 350 C Thermostats are mounted without contacting with rollers The actual temperature on the roller surface differs from the indicated value
56. 4 0 Windows 2000 or Windows Server Server 2003 Supported operating systems Windows 98 Second Edition Windows Me Windows Client 2000 Windows XP or Windows NT 4 0 SP6a Mac OS 9 2 or later or Mac OS X 10 2 or 10 3 2 8 Scan functions Driver KONICA MINOLTA scanner driver Compatible operating sys Windows 98 98SE Me Windows NT 4 0 SP6 or later Windows 2000 tems Windows XP Scan speed 25 pages min for both monochrome and full color 600 dpi A4 Scannable range Same as the copier Max A3 Functions Scan to e mail scan to FTP scan to SMB scan to BOX Resolution 200 300 400 600 dpi NOTE These specifications are subject to change without notice Theory of operation ver 3 0 Aug 2006 3 Center cross section 3 Center cross section e io e o 8 18 19 20 m a 1 1 10 9 8 4038T1C103AA 1 CCD unit 11 Print head unit PH unit Y 2 Fusing unit 12 Waste toner box 3 Transfer belt unit 13 Imaging unit Y 4 Image transfer roller 14 Imaging unit M 5 Bypass tray 15 Imaging unit C 6 Trayi 16 Imaging unit K 7 Tray2 17 Toner cartridge Y 8 Print head unit PH unit K 18 Toner cartridge M 9 Print head unit PH unit C 19 Toner cartridge C 10 Print head unit PH unit M 20 Toner cartridge K 4 Paper path Theory of operation ver 3 0 Aug 2006 4 Pap
57. 4 2 Elevator tray shifting mechanism e When in the Sort mode the Elevator Tray is moved to the front and rear by a motor to stack print sets in a sawtooth manner so that each print set is offset with respect to the others The Shift Home Position Sensor detects the Elevator Tray at its home position Shift Motor Pulse Sensor PC11 FN Elevator Tray Shift Motor M8 FN Shift Home Position Sensor PC10 FN 21 FS 501 e S e i 9 5 Mechanical operations Theory of Operation Ver 1 0 Jul 2005 5 5 Horizontal transport unit Entrance Switching Solenoid SL1 HO FS 501 Turnover Empty Sensor PC6 HO Horizontal Unit Door Sensor PC4 HO Paper Sensor PC1 HO I 8 s 6 22 Theory of Operation Ver 1 0 Jul 2005 5 Mechanical operations 5 5 1 Paper transport mechanism A Paper path switching mechanism The paper fed from the main body moves through either one of the two different paper paths A solenoid is used to select the paper path For switchback sequence during 2 sided printing Solenoid energized For transport onto the Finisher Solenoid deenergized FS 501 Turnover Empty Sensor PC6 HO Entrance Switching Solenoid SL1 HO SL1 Energized C SL1 Deenergized e e i
58. 4066T2C512DA 5 a Operation 8 z While feeding the second 2 sided print out main body pro 8 duces the print image of the 8th page of the original on the fourth sheet of paper The third sheet of paper will wait in front of the Duplex Unit 8 6 Transport Roller 3 until the fourth sheet of paper has been operated switch back sequence 4066T2C513DA Steps 6 through 8 are repeated A4 2 originals 2 to 2 print mode Registration Roller Su Sensor PC1 ON Exit Sensor PC2 ON xb Forward e B i Forward Backward Rotation Rotation Rotation Rotation i Rotation Duplex Unit Switchback ON Motor M1 DU OFF Duplex Unit Transport ON ammo mn Motor M2 DU OFF Duplex Unit Transport ON Sensor2 PC2 DU OFF 4066T2E520DA 5 Operation Theory of Operation Ver 2 0 Feb 2006 AD 503 I 8 5 E o Blank Page 10 SS KONICA MINOLTA SERVICE MANUAL THEORY OF OPERATION FS 501 2005 07 KONICA MINOLTA BUSINESS TECHNOLOGIES INC Ver 1 0 Revision history After publication of this service manual the parts and mechanism may be subject to change for improvement of their performance Therefore the descriptions given in this service manual may not coincide with the actual machine When
59. 5 8 5 x 11 B Machine specifications DC 24 V Supplied from the finisher DC 5 V Generated inside the mail bin Dimensions 340 mm W x 509 mm D x 387 mm H 13 5 inch W x 20 inch D x 15 25 inch H Weight 8 kg 17 75 Ib Power requirements C Operating environment Conforms to the operating environment of the main unit NOTE These specifications are subject to change without notice 2 Paper path Theory of operation ver 1 0 Aug 2006 2 Paper path e oR 4510T2C501AA Theory of operation ver 1 0 Aug 2006 3 Composition Composition Operation 3 Composition MT 501 2 Q 9 9 NU 4510T1C600AA 4 Drive Theory of operation ver 1 0 Aug 2006 4 Drive Transport motor 1 MT 501 Transport rollers Exit rollers 4510T2C502AA 2 S Q 5 6 Theory of operation ver 1 0 Aug 2006 5 Operations 5 Operations 51 Paper transport mechanism MT 501 When the mailbin is selected as the exit source paper is fed off from the finisher FS 514 and toward the mailbin Drive for the transport rollers of the mailbin is transmitted from the tran
60. 9 a Heating roller thermostat TS1 Fusing pressure roller Heating roller thermostat TS2 thermistor 3 TH4 4038T2C191AA Heating roller heater Fusing pressure roller lamp 2 H2 Heating roller heater thermistor 1 TH2 lamp 1 H1 Fusing pressure roller thermistor 2 TH5 98 Theory of operation ver 3 0 Aug 2006 20 Fusing section Heating roller thermistor 1 TH1 Heating roller thermistor 2 TH3 Heating roller thermistor 3 TH4 bizhub C250 C252 Fusing pressure roller thermistor 1 TH2 4038T2C154AA Fusing pressure roller thermistor 1 TH2 4038T2C153AA Heating roller thermostat TS1 Fusing pressure roller thermostat TS2 4038T2C155AA 2 Q 9 9 Heating roller Heating roller Heating roller Heating roller thermostat TS1 thermistor 1 TH1 thermistor 2 TH3 thermistor 3 TH4 Heating roller lamp 1 H1 A Heating roller Heating roller heater A lamp 2 H2 Fusing pressure roller heater lamp H3 A Fusing pressure roller 4038T2C160AA Fusing pressure roller Fusing pressure roller Fusing pressure roller thermostat TS2 thermistor 1 TH2 thermistor 2 TH5 99 Theory of operation ver 3 0 Aug 2006 20 Fusing section 20 2 Drive Fusing drive motor M4 Fusing pressure roller
61. Dimensions 538 mm W x 637 mm D x 978 mm H 21 1 4 inch W x 25 inch D x 38 1 2 inch H Weight 38 1 kg 84 Ib G Operating environment Conforms to the operating environment of the main body NOTE These specifications are subject to change without notice 1 Product specification Theory of Operation Ver 1 0 Jul 2005 Theory of Operation Ver 1 0 Jul 2005 2 Overall composition Composition Operation 2 Overall composition FS 501 2 e S e i 9 1 19 Tray 4 Lower Front Cover 2 Upper Cover 5 Elevator Tray 3 Upper Front Cover 6 Rear Cover 3 Center cross section Theory of Operation Ver 1 0 Jul 2005 3 Center cross section 6 z 7 I 2 20 on Oo 1 18 Tray Exit Roll B Entrance Roll 2 1 Tray Exit Roller 9 Lower Path Transport Roll 3 Upper Path Transport Roller 10 Lower Path Transport Roller 4 Upper Path Transport Roll 11 Storage Roller 5 Entrance Roller 12 Storage Roll 6 Transport Rolls 13 Exit Roller 7 Transport Rollers 14 Exit Roll Theory of Operation 1 0 Jul 2005 4 Drive system 4 Drive system Lower Pa
62. Edge Feeding A4 Short Edge Feeding A4S Short Edge Feeding A3 C 2 KONICA MINOLTA SERVICE MANUAL bizhub C250 C252 Main Unit 2006 08 KONICA MINOLTA BUSINESS TECHNOLOGIES INC Ver 3 0 Revision history After publication of this service manual the parts and mechanism may be subject to change for improvement of their performance Therefore the descriptions given in this service manual may not coincide with the actual machine When any change has been made to the descriptions in the service manual a revised version will be issued with a revision mark added as required Revision mark To indicate clearly a section revised show to the left of the revised section A number within represents the number of times the revision has been made To indicate clearly a section revised show A in the lower outside section of the correspond ing page A number within 4 represents the number of times the revision has been made NOTE Revision marks shown in a page are restricted only to the latest ones with the old ones deleted When page revised in Ver 2 0 has been changed in Ver 3 0 The revision marks for Ver 3 0 only are shown with those for Ver 2 0 deleted When a page revised in Ver 2 0 has not been changed in Ver 3 0 The revision marks for Ver 2 0 are left as they are Added the description of bizhub C252 Error cor 2006 08 3 0 A rections Corr
63. Film 16 to 68 Ib Label Paper Thick Paper 1 Controlled by whichever reached earlier 2 Sort offset Sort group No of Type Size Weight Tray Capacity Exit Tray Sheets to be Stapled Plain Paper A5 B5S B5 60 to 90 g m 45 B4 1st paper 5 to A3 16 to 24 Ib 85x118 85x14 gattray or smaller orlarger 8 5 x 115 No of 8 5 x 11 to Sheets 1000 500 11x17 Height 150 mm 75mm Controlled by whichever reached earlier 1 Product specification Theory of Operation Ver 1 0 Jul 2005 3 Sort staple No of Sheets to 8 Type Size Weight Tray Capacity Exit Tray be Stapled 0 Plain 55 5 Normal 45 4 1st Normal Mode 1 i 2 8 5x 11S 85x14 Thick Paper A3 60 to 90 g m or smaller or larger paper A4S 4 8 5 x 115 16 to 24 Ib No of exit tray 85 115 85x14 8 5 x 11 to Sheets 1000 500 or smaller larger 11x17 Cover Mode Height 150mm 75 21050 21025 60 to 209 g m Sets 30 30 161055 51b Controlled by whichever reached earlier 1 The number of Sheets to be Stapled is limited for high density images Color Wise 20 sheets x 20 sets 4 Center Staple amp Fold A No of Sheets to Type Size Weight Tray Capacity Exit Tray be Stapled Plain Paper A4S B4 A3 60 to 90 g m 10 sets 2nd paper Black copy 8 5 x 115 16 to 24 Ib No of Sheets to be exit tray
64. Finisher side is driven by the Transport Motor to feed the paper through the Finisher FS 603 3 4583M001CA Horizontal Unit side I 8 E e Transport Roller 4853M003AB Transport Motor 1 Transport Roller 4643M007AD 10 Theory of Operation 1 0 Jul 2005 5 Operation 5 2 Finishing tray mechanism 5 2 1 Paper stacking with finishing tray After the paper has been fed through the Exit Roller the paper drops onto the Finishing Tray Then the Paddle taps the top of the paper twice once for the additional sheets so that the trailing edge of the paper reaches the Finishing Tray Stopper After Paddle operation is finished Swing Guide will be lowered to prevent curling of paper The Paddle Motor provides the drive for the Paddle and Its home position is detected with the Paddle Home Position Sensor FS 603 Paper Aligning Plate Exit Roller Paddle Upper Exit Roller Swing Guide Finishing Tray Stopper 2 Q 9 9 1st Paper Exit Tray Paper Exit Belt Lower Exit Roller 4989MB14AA 11 5 Operation Theory of Operation Ver 1 0 Jul 2005 5 2 2 Aligning mechanism Two Aligning Plates are moved by drive of the Front or Rear Aligning Motor in the for ward or reverse direction The Aligning Plates home position is detected w
65. M4 FN Upper Path Transport Roller 1 Tray Exit Roller Upper Lower Entrance Switching Solenoid SL1 FN 19 Tray Entrance Switching Solenoid SL2 FN FS 501 e S e i 9 FS 501 I 8 e 5 Mechanical operations Theory of Operation Ver 1 0 Jul 2005 C Finisher tray paper transport mechanism Paper transport to the Finisher Tray takes place when the Finisher is in the Staple mode As the Lower Entrance Motor is energized the Storage Roller turns to transport the paper toward the exit direction By turning the Exit Motor backward paper is transported onto the Finisher Tray Either the upper paper path or lower paper path is used to transport paper onto the Finisher Tray The upper paper path is selected when the Upper Lower Entrance Switching Solenoid is energized while the 15t Tray Entrance Switching Solenoid is deenergized The lower paper path is selected when the Upper Lower Entrance Switching Solenoid is deenergized Lower Entrance Motor M2 FN Finisher Tray Storage Roller Lower Path Transport Roller Exit Motor M3 FN 19 Tray Entrance Switching Solenoid SL2 FN Upper Lower Entrance Switching Solenoid SL1 FN 10 Theory of Operation Ver 1 0 Jul 2005 5 Mechanical operations D Elevator tray paper transport mechanism Paper transp
66. PC4 detection P OHP Other than OHP Determines that there is mismatch of paper type bringing all mechanisms to an immediate Other than OHP OHP stop media error will be displayed on the panel Replenish paper En 2 2 4038T2E207AA 4038T2E212AA 2 e OHP sensor 4 5 OHP sensor PC4 LED remote SS Sensor output Zh 4038T2C189AA 4038T2C185AA 96 Theory of operation ver 3 0 Aug 2006 19 Registration roller section 19 3 3 Deceleration control e It controls the timing the paper reaches to the registration roller sensor PC1 A Operation The vertical transport motor vertical transport roller for each tray will slow down its operation in order to adjust the speed of the paper being conveyed bizhub C250 C252 Registration roller sensor PC1 Tray2 vertical transport roller Tray3 vertical transport roller 2 Q 9 9 4038T2C190AA 97 20 Fusing section Theory of operation ver 3 0 Aug 2006 20 Fusing section 20 1 Composition bizhub 250 252 4038T2C119AA Heating roller thermistor 1 TH1 Heating roller Pressure roller Heating roller thermistor 2 TH3 Fusing pressure roller heater lamp H3 5 2 a i 5
67. Product Powered On WARNING Take every care when making adjustments or performing an operation check with the product powered If you make adjustments or perform an operation check with the external cover detached you may touch live or high voltage parts or you may be caught in moving gears or the timing belt leading to a risk of injury Take every care when servicing with the external cover detached High voltage exists around the drum unit A risk of elec tric shock exists Safety Checkpoints WARNING Check the exterior and frame for edges burrs and other damage a The user or CE may be injured Do not allow any metal parts such clips staples and screws to fall into the product They can short internal circuits and cause electric shock S P or fire e Check wiring for squeezing and any other damage Current can leak leading to a risk of electric shock or a fire Carefully remove all toner remnants and dust from electri cal parts and electrode units such as a charging corona unit Q Current can leak leading to a risk of product trouble or fire e Check high voltage cables and sheaths for any damage Current can leak leading to a risk of electric shock or fire Q J 5 8 SAFETY AND IMPORTANT WARNING ITEMS Safety Checkpoints WARNING Check electrode units such as a charging corona unit for deteriorati
68. Q 5 m Paper Folding Transport Paper Transport 4583M633AA Lower Folding Roller 4583M636AA 4583M637AA The plate doesn t touch paper The plate pushes paper 28 KONICA MINOLTA SERVICE MANUAL THEORY OF OPERATION PK 501 PK 4 PK 131 2005 07 KONICA MINOLTA BUSINESS TECHNOLOGIES INC Ver 1 0 Revision history After publication of this service manual the parts and mechanism may be subject to change for improvement of their performance Therefore the descriptions given in this service manual may not coincide with the actual machine When any change has been made to the descriptions in the service manual a revised version will be issued with a revision mark added as required Revision mark To indicate clearly a section revised show to the left of the revised section A number within represents the number of times the revision has been made To indicate clearly a section revised show in lower outside section of correspond ing page A number within represents the number of times the revision has been made NOTE Revision marks shown in a page are restricted only to the latest ones with the old ones deleted When a page revised in Ver 2 0 has been changed in Ver 3 0 The revision marks for Ver 3 0 only are shown with those for Ver 2 0 deleted When a page revised in Ver 2 0 has not been changed in Ver 3 0
69. Sheets with rough surface e g letterhead Take up failure Sheets penciled Contamination Sheets folded Image deformation multi page feed take up failure Sheets other than detectable size sheets Image deficit Theory of Operation Ver 1 0 Jul 2005 3 Overall composition Composition Operation 3 Overall composition p Q 1 2 3 4 5 6 5 E 7 8 T O Q 1 Hookup Cord 5 Turnover Cover 5 2 Take Up Cover 6 Document Guide 3 Document Feed Tray 7 Transport Belt 4 Exit Cover 8 Magnet 4 Drive system Theory of Operation Ver 1 0 Jul 2005 4 Drive system Turnover Exit Drive Mechanism DF 601 Document Transport Drive Mechanism Document Take Up Feeding Drive Mechanism 2 S g Q 5 6 Theory of Operation 1 0 Jul 2005 5 Paper path 5 Paper path DF 601 Single sided Document Mode 2 Q 9 9 6 Mechanical operations Theory of Operation Ver 1 0 Jul 2005 6 Mechanical operations 6 1 Document pick up mechanism The Document Pick Up Section consists of the Document Stoppers Pick Up Rollers Take Up Roller and Separation Roller and this section is driven by the Take Up Motor The Pick Up Rollers stay at
70. Tray is fixed and all the paper stacked as a booklet is exited onto this Tray The Saddle Tray Sensor detects if the paper is stacked on the 2nd Paper Exit Tray but does not detect a paper jam FS 603 2nd Paper Exit Tray Paper Stopper I 2 w m E 5 5 pm 4583M638AA Saddle Tray Sensor PI13 FN Paper Hold Plate 22 Theory of Operation Ver 1 0 Jul 2005 5 Operation 5 4 2 Transport operation in Center Staple amp Fold section A Paper transport After a stack of paper has been aligned on the Finishing Tray it is taken up with the Upper and Lower Exit Rollers With the rotation of the Upper and Lower Exit Rollers a stack of paper is transported into the Stapling Section FS 603 pa Upper Exit Roller Bundle of paper P di Lower Exit Roller 2 Q 9 9 4583M626AA 23 5 Operation Theory of Operation Ver 1 0 Jul 2005 B Stapling The stack of paper is further transported and temporarily stopped when the center area of the paper the area where stapling will be made has reached the position of the sta ples in the Staple Unit Then a stapling operation is cycled at the center area with the Staple Unit FS 603 Staples Staple Unit Upper H Folding Position Sensor PI10 FN 2 Staple Unit Lower 1 4583 627 N
71. a staple in the paper Five different types of stapling are available parallel front one point parallel rear one point slant front one point slant rear one point and parallel two points FS 514 PK 510 OT 601 Clinch arm Stapling unit 2 S Q 5 6 Stapling motor 9J08T2C012DA 24 Theory of operation ver 1 0 Aug 2006 5 Operations 5 4 2 Stapling unit moving mechanism The stapling unit is moved by the stapling unit moving motor The stapling unit moving motor drives the belt so that the stapling unit is moved to the corresponding stapling position The stapling stop position is controlled by the period of time during which the stapling unit moving motor is kept energized as counted from the time when the staple home position sensor has been activated The stapler unit will move to the stapler save position during the saddle mode The stapler unit needs to be in the save since the moving part of the holding section shifts from horizontal to 20 degrees angles during the saddle mode The stapler save position is detected by the stapler save position sensor FS 514 PK 510 OT 601 Stapler save position Save position sensor PC10 Home position Stapling unit gt Staple change position Staple home position sensor PC9 2 Q 9 9 S
72. and wall outlet Using the power plug and wall outlet without removing dust may result in fire Do not insert the power plug into the wall outlet with a wet hand The risk of electric shock exists When unplugging the power cord grasp the plug not the cable The cable may be broken leading to a risk of fire and electric shock o amp 5 5 SAFETY AND IMPORTANT WARNING ITEMS Wiring WARNING Never use multi plug adapters to plug multiple power cords in the same outlet If used the risk of fire exists When an extension cord is required use a specified one Current that can flow in the extension cord is limited so using a too long extension cord may result in fire Do not use an extension cable reel with the cable taken up Fire may result 2 Installation Requirements Prohibited Installation Places NWARNING Do not place the product near flammable materials or vola tile materials that may catch fire S A risk of fire exists Do not place the product in a place exposed to water such as rain S A risk of fire and electric shock exists Nd When not Using the Product for a long time NWARNING When the product is not used over an extended period of time holidays etc switch it off and unplug the power Cord Dust collected around the power plug and outlet m
73. at the shading position 3 The exposure unit will move from the shading position to the front edge of the image in scanning direction 4 The exposure unit will move from the front edge to the back edge of the image to scan The exposure unit will start reading the original image from the front edge The unit will finish reading the image at the back edge of the image bizhub C250 C252 5 The exposure lamp will be OFF when the reading is complete The scanner cooling fan motor M202 will stop 6 The exposure unit moves from the back edge of the image to the home position and stops in returning direction It scans only once even for the multi copies since R G and B data will all be mem orized in one scanning Shading position Home position Front edge of the image Back edge of the image I 8 Q Q e SS Return 27253581 4038T2C147AA Shading position Home position Y Front edge of the image Back edge of the image 1 1 1 1 1 Exposure lamp FL201 Gain adjustment and shading correction 1 Return 4038 2 150 20 Theory of operation ver 3 0 Aug 2006 7 Scanner section IR section 7 3 2 Original size detection control A Detection method For detection of the original size the reflective size sensors detect the length of the orig inal while the CCD
74. belt unit is detected panel displays initialization Mode 1 Ren and stabilization mode The number of copies made exceeds 140 counts after the previous image stabiliza Mode 2 1 2 3 Power switch is turned ON right door is opened and closed front door is opened closed sleep mode is reset panel displays stabilization mode The number of copies made exceeds 280 counts after the previous image stabiliza tion mode 1 3 When the number of copies made exceeds threshold 140 counts after the previous image stabilization mode 1 2 3 temperature change that exceeds threshold 1 is detected Mode 3 When the number of copies made exceeds threshold 140 counts after the previous image stabilization mode 1 2 3 environment temperature humidity change that exceeds threshold is detected When the print job is completed given level of temperature change 1 is detected When the print job is completed environment temperature humidity change that N exceeds threshold is detected after the previous stabilization mode 1 2 3 A copy of A4 size or equivalent is counted as one Paper length is 216 mm or under 1 count Paper length exceeds 216 mm 2 counts 1 Temperature change threshold The temperature entered previously was 20 degree celsius or under threshold 1 degree The temperature entered previously exceeded 20 degree celsius threshold 2 degree 117 bizhub C250 C2
75. image transfer allowing the visible developed image on the surface of the transfer belt to be transferred onto the paper The paper which has undergone the 2nd image transfer process is neu 10 Paper separation tralized so that it can be properly separated from the transfer belt by the paper separator claws A 11 Transfer belt clean Residual toner on the surface of the transfer belt is collected for cleaning ing by cleaning blade 12 drum cleaning The residual toner left on the surface of the PC drum is scraped off 13 Main erase The surface of the PC drum is irradiated with light which neutralizes any surface potential remaining on the surface of the PC drum 13 N o 5 D N o a gt a 5 Image creation process Theory of operation ver 3 0 Aug 2006 N f N 14 Theory of operation ver 3 0 Aug 2006 6 Overall composition Composition operation 6 Overall composition 6 1 Timing chart at machine power up Main motor M1 Drum charge corona remote bizhub C250 C252 Grid K Developing bias DC K Color PC drum motor M2 Drum charge corona remote Y Grid Y M C Developing bias DC Y M C 1st image transfer pressure retraction clutch 1st image transfer pressure retraction position sensor PC6 Polygon motor M18 M19 M20 M21 2
76. in the area In that case it is obligation of customer engineer hereafter called the CE to attach appropriate power plug or power cord set in order to connect the product to the supply Power Cord Set or Power Plug WARNING Use power supply cord set which meets the following criteria provided with a plug having configuration intended for the connection to wall outlet appropriate for the prod uct s rated voltage and current and the plug has pin terminal s for grounding and provided with three conductor cable having enough cur rent capacity and the cord set meets regulatory requirements for the area Use of inadequate cord set leads to fire or electric shock Attach power plug which meets the following criteria having configuration intended for the connection to wall outlet appropriate for the product s rated voltage and current and the plug has pin terminal s for grounding and aD meets regulatory requirements for the area Use of inadequate cord set leads to the product connect ing to inadequate power supply voltage current capacity grounding and may result in fire or electric shock Conductors in the power cable must be connected to ter minals of the plug according to the following order Black or Brown L line White or Light Blue N neutral aD Green Yellow PE earth Wrong connection may cancel safeguards within the product and results in fire or el
77. is processed as multi valued data 8 bit data In any mode other than photo the error diffusion method is employed to pro cess the image as binary 1 bit data Temporarily stores the BTC compressed image data and error diffusion data group format Stores the compressed image data The image data read from the file memory is uncompressed through a method in a reverse way of JBIG compression At this time image rotating or sorting processing is conducted Image data of the file memory is developed to the frame memory and output delay control for the interval of PC drums Y M C K is conducted Stores the Y M C and K image data Temporarily stores the image data output from the frame memory Expands the image data using the method opposite to that used in BTC compres sion Correct the shear in printing start position in the main scanning direction which occurs when each PH unit of Y M C K is exposed on the PC drum Edge of letter and lineal drawing gets area discrimination and FEET processing is conducted according to the discrimination result When FEET processing is conducted interpolation is done so that no influence is given to continuous gradation portion Multi valued data gets gamma correction at this time makes the necessary correc tions so that the printed gradations have linear characteristics since the image density of the input image data is not directly proportional to that of the printed image because
78. maximum the bypass tray is opened to the maximum and the front door is open 5 Space requirements are the values when the finisher is slid to the maximum the bypass tray is opened to the maximum and the paper feed tray is slid to the maximum 2 6 Operating environment Temperature 10 to 30 50 to 86 with a fluctuation of 10 C 18 or less per hour Humidity 15 to 85 Relative humidity with a fluctuation of 20 h Difference between front and back right and left should be 1 degree or Levelness Under 2 Product specifications Theory of operation ver 3 0 Aug 2006 2 7 Print functions N wo g Type Built in printer controller PPC750 466 MHz S A RAM 1 GB shared with the C250 C252 N HDD 40 GB shared with the C250 C252 Standard Ethernet 10 Base T or 100 Base TX Option USB 1 1 USB 2 0 or IEEE 1284 Supported protocols TCP IP IPX SPX NetBEUI AppleTalk EtherTalk Monochrome print 1 sided 25 pages min 2 sided 23 pages min Interface Print speed A4 8 5x11 Color print 1 sided 25 pages min 2 sided 23 pages min PCL5e c emulation Printer language PCL6 XL Ver 2 1 emulation PostScript emulation 301 1 Equivalent to 1800 dpi in main scanning direction X 600 dpi in sub scanning Print resolution direction Printer fonts PCL Latin 80 fonts postscript 3 emulation latin 136 fonts Windows NT
79. mounted on the underside of each of the developing sections The sensor for C M Y and K is a magnetic type Each of these sensors detects toner to car rier ratio T C of the developer The reading is used for determining the amount of toner supplied Only when a new imaging unit is installed in the machine an automatic adjustment is made of each of these TCR sensors The sensors cannot be adjusted manually The target T C is 8 for color and 7 for K The magnetic permeability powder density of the carrier in the developer is measured to determine the T C A mylar is provided for the conveying screw portion to scrape toner off the surface of the TCR sensor The TCR sensor is integrated with the imaging unit When the TCR sensor is to be replaced with a new one the entire imaging unit must be replaced TCR sensor Magnetic TCR sensor 4038T2C031AA 403810503 0 TCR sensor 44 Theory of operation ver 3 0 Aug 2006 13 Toner supply section 13 Toner supply section 13 1 Composition bizhub C250 C252 4038T2C014AA Toner cartridge K 4038 2 21 gt 15 7 Q 9 3m 9 4038T2C015AA Toner cartridge Y M C d Toner supply 7 Toner supply drive section M 4 drive section K a ds a gt T i rive section oner supply DN d drive Section C 4038T2C004AA Agitating blade K Toner cartrid
80. nnt ertt tnr tii rein rito eias 13 SD 503 g St 9 9 Theory of operation ver 1 0 Aug 2006 50 503 8 E Q Q Blank Page ij Theory of operation ver 1 0 Aug 2006 1 Product specification Outline 1 Product specification 8 A Type Saddle sticher SD 503 Type Built into the finisher Installation Screwed to the finisher Document alignment Center Center parallel two points Stapling function No of sheets to be stapled together 2 to 15 B Paper type 50 g m to 90 g m Recycled paper 13 25 to 24 Ib Size B5S to A3 8 x 115 to 11x 17 Capacity 200 sheets or 20 copies C Machine specifications DC 24 V supplied from the finisher DpC5V Max power consumption 9 5 W or less 48 mm W x 399 mm D x 121 mm H 2 inch W x 15 75 inch D x 4 75 inch H 445 mm W x 478 mm D x 203 mm H 17 5 inch W x 18 75 inch D x 8 inch H 576 mm W x 478 mm D x 281 mm H 1 22 75 inch W x 18 75 inch D x 11 inch H 1 Crease unit 1 9 kg 0 5 Ib Saddle unit 7 4 kg 2 0 Ib Power requirements Crease unit Dimensions Saddle unit Weight 1 Size when the paper output tray is pulled out D Operating environment Conforms to the operating environment of the main u
81. operation ver 3 0 Aug 2006 20 3 14 High temperature error detection thermostat protection 20 3 15 Detection of a new fusing unit 21 Paper exit section 113 21 1 CombposilLiOn coire titt cett tieni tn tte cera t cedet ad c 113 21 2 DVO 114 22 Image stabilization 115 22 1 hannah RE Gl DRE HL are 115 22 2 fesse M 116 22 2 1 IDC intensity control eene 116 22 2 2 Max density 116 22 2 3 LD laser diode intensity adjustment control 116 22 2 4 Gamma correction 116 22 3 Operation timMiING ciini e ree nien cr ge i la er cato s 117 22 4 Operation ene etas andi dapes 23 Image processing 23 1 Scanner section image processing block 119 23 2 Write section image processing block diagram 120 24 123 241 123 24 1 1 X Construction nennen nennen nnne 123 24 1 2 Operation ieiunia den E RE EE E DER ER 124 24 2 Parts operated when the power switch and sub power switch are turned ON 127 24 2 1 Parts operated when the power s
82. paper has exited from the Finishing Tray and has been stacked onto the ist Paper Exit Tray the 1st Paper Exit Tray is moved down by the Shift Motor driven given number of clock pulses The Clock pulse detection is generated with the Shift Motor Clock Sensor and the 1st Paper Exit Tray is returned to its home position for the next stacking operation The Upper limit position of the 1st Paper Exit Tray is detected with the Shift Upper Limit Sensor When the Shift Upper Limit Sensor is turned ON upward movement drive from the Shift Motor is stopped The Lower limit position of the 1st Paper Exit Tray is detected with the Shift Lower Limit Sensor When the Shift Lower Limit Sensor is turned ON downward movement drive from the Shift Motor is stopped The Stack Full Sensor detects if an excessive amount of stacking is made due to the height of the stacked paper of large sizes or of mixed sizes Shift Upper Limit Sensor PI15 FN Exit Tray Sensor PI8 FN Shift Lower Limit Sensor PI16 FN Exit Tray Home Position Sensor PI9 FN Edge Shift Motor Clock Sensor 1st Paper Exit Tray PI17 FN Stack Full Sensor PI24 FN Shift Motor M6 FN 4583M625AA 21 FS 603 Q 9 9 5 Operation Theory of Operation Ver 1 0 Jul 2005 5 4 Center Staple amp Fold Section 5 4 1 2nd paper Exit Tray The 2nd Paper Exit
83. power supply to the HDD is shut down Turning OFF the power switch while the HDD is running could result in a defective HDD Turn OFF the power switch after the start key has gone out To turn OFF and ON the power switch first turn OFF the power switch and wait for 10 sec or more before turning it ON again If a setting value or values in the tech rep mode are changed it takes 10 sec or more to incorporate the setting changes properly in the machine Power switch OFF ON procedure 1 Turn OFF the sub power switch 2 Turn OFF the power switch 3 Wait for 10 sec 4 Turn ON the power switch 5 Turn ON the sub power switch 127 bizhub 250 252 pl 8 Q fe oO 24 Other control Theory of operation ver 3 0 Aug 2006 24 3 Counter control 24 3 1 Construction 1 1 Total counter a aig a ican esc eg Ca 1 PWB MFPC Electronic counter Key counter option PWB SIF 4038T2C193AA Name Function system Total counter Displays the cumulative number of copies and prints of all jobs A mechanical counter driven by an electric signal Counts one when an exit signal is applied to it Electronic counter Number of total copies prints in copy print scan fax mode will be dis played on the screen as described below Black full color mono color and 2 color Total counter large size counter color total copy printer print counter
84. printer head adopts the correction system bizhub C250 C252 2 S g Q E 5 6 4038T2C033DA The main body skew can be corrected by adjusting the dial of the corresponding printer head Y M C K 30 Theory of operation ver 3 0 Aug 2006 9 9 1 Imaging unit section IU section Composition 9 Imaging unit section IU section PC drum Y M C K at E Developing unit sid Y M C K N 4957 4038T2C010AA Imaging unit Y M C 4038T2C009AA Imaging unit K Toner collecting screw Cleaning blade PC drum charge corona Y 31 bizhub 250 252 2 Q 9 9 9 Imaging unit section IU section Theory of operation ver 3 0 Aug 2006 9 2 Drive Main motor M1 Developing clutch K CL4 bizhub 250 252 Color PC drum motor M2 I 2 6 32 Theory of operation ver 3 0 Aug 2006 9 Imaging unit section IU section 9 3 Operation 9 3 1 IU life control Each IU has EEPROM board that detects a new IU and keeps track of the service life of the IU bizhub C250 C252 A New IU detection New IU is detected when 24 V is turned ON as the main power switch is turned OFF an
85. roller Skew registration clutch CL1 Registration roller 9J08T2C004DA 5 1 3 Intermediate transport section The paper transported from the entrance transport section is brought to a stop at the punching and creasing position The paper is also transported to the storage section Drive for the intermediate transport section is provided by the transport motor 1 Drive of the transport roller 1 is controlled The entrance sensor detects paper in the intermediate transport section 2 7 Q 9 9 Transport motor 1 M2 Entrance sensor PC1 Paper 9J08T2C005DA Transport roller 1 13 5 Operations Theory of operation ver 1 0 Aug 2006 5 1 4 Storage section The paper transported from the intermediate transport section is transported to the stor age section Drive for the storage section is provided by the transport motor 2 Drive of the transport roller 2 and storage roller are controlled The entrance sensor and transport sensor detects paper in the storage section FS 514 PK 510 OT 601 Transport roller 2 Transport sensor PC2 Transport motor 2 M3 Storage roller 9 08 2 006 5 1 5 Exit transport section The paper transported from the storage section is transported onto each of the exit trays The exit motor provides drive for the exit roller storage paddle and exit paddle
86. samma batterityp eller en ekvivalent typ som rekommenderas av apparat tillverkaren Kassera anv nt batteri enligt fabrikantens instruktion Norway ADVARSEL Eksplosjonsfare ved feilaktig skifte av batteri Benytt samme batteritype eller en tilsvarende type anbefalt av apparatfabrikanten Brukte batterier kasseres i henhold til fabrikantens instruksjoner S 12 SAFETY AND IMPORTANT WARNING ITEMS 5 FUSE CAUTION Double pole neutral fusing ATTENTION Double p le fusible sur le neutre 6 Laser Safety This is a digital machine certified as a Class 1 laser product There is no possibility of danger from a laser provided the machine is serviced according to the instruction in this manual 6 1 Internal Laser Radiation semiconductor laser Maximum power of the laser diode 10 mW Maximum average radiation power 8 0 uW Wavelength 775 800 nm at laser aperture of the Print Head Unit This product employs a Class 3B laser diode that emits an invisible laser beam The laser diode and the scanning polygon mirror are incorporated in the print head unit The print head unit is NOT A FIELD SERVICEABLE ITEM Therefore the print head unit should not be opened under any circumstances Laser Aperture of the Print Head Unit 4038P0C501DA 5 13 SAFETY AND IMPORTANT WARNING ITEMS U S A Canada CDRH Regulation This machine is certified as a Class 1 Laser product u
87. section before being fed out onto the corresponding exit tray In the sort group copy staple or center crease center staple mode each copy set is stored in the storage tray with the upper exit roller separated from the lower exit roller The storage tray detect sensor detects paper in the storage tray The storage paddle and aligning belt are driven when the exit motor is rotated in reverse Operation 1 The paper fed out from the main unit is held downward by the drop lever and dropped down into the storage tray by the stepped roller 2 The paper dropped into the storage tray is pressed against the stopper by the pad dle and aligning belt so that it is aligned properly in the sub scan direction Drop lever Storage paddle Aligning belt Paper stopper 4349T2C528AB 4349T2C517AB Stepped roller Storage tray detecting sensor PC3 Aligning belt Exit motor M4 9J08T2CO09DA 20 Theory of operation ver 1 0 Aug 2006 5 Operations 5 3 2 Paper aligning mechanism main scan direction Aligning plates are moved and the paddle is rotated so as to align the paper at the sta pling position The paper in the storage tray is aligned in the main scan direction by two align motors and aligning plates FS 514 PK 510 OT 601 A Aligning plates The aligning plates are moved to the front or rear in accordance with the paper size The alignment home position sensor controls the position of eac
88. switchback sequence at the exit section and fed into the Duplex Unit At the same time the third sheet of paper is taken up and fed into the main body 4066T2C509DA Operation 5 While feeding the first 2 sided print out main body produces the print image of the 6th page of the original on the third sheet of paper The second sheet of paper will wait in front of the Duplex Unit Transport Roller 3 until the third sheet of paper has been operated switch back sequence 818 4066T2C510DA Theory of Operation 2 0 Feb 2006 5 Operation Operation 6 Immediately before the first 1 sided print leaves the Paper Exit Roller the direction of rotation of the Paper Exit Roller is 2 2 reversed and the first 1 sided print for the third sheet is al transported toward and into the Duplex Unit same time the second sheet of paper is fed into the main body again t 4066T2C511DA Operation 7 The main body carries out the first print cycle for the second sheet of paper to produce the print image of the third page of the original Atthe same time the first 1 sided print for the third is trans ported through the Duplex Unit Atthe same time the forth sheet of paper is taken up and i fed into the main body 2
89. systems are OFF due to the cause except paper jam trouble or door being open Stop Fusing cooling fan motor 2 M11 Half speed In standby Full speed 2 When printing 125 bizhub 250 252 8 o fe 24 Other control Theory of operation ver 3 0 Aug 2006 motor M202 Motor name Control Control conditions outline e At plug in sub power switch OFF Stop e At warm up low power or sleep e When re writing flash ROM e At initial operation image stabilization and function Suction fan motor M10 In standby Half speed e At paper jam in trouble or when the door is open All drive systems are OFF due to the cause except paper jam trouble or door being open Full speed When printing At plug in sub power switch OFF Stop When re writing flash ROM When in low power or sleep n standby ee fan motor 1 Half speed At paper jam in trouble or when the door is open M12 All drive systems OFF due to the cause except paper jam trouble or door being open At warm up or printin Full speed P P ng ae At initial operation image stabilization or function Plug in sub power switch OFF At warm up in standby lower power or sleep When re writing flash ROM Stop e At paper jam in trouble or when the door is open Cooling fan motor 2 p
90. the entrance sensor of the finisher is deactivated and retracts when the trailing edge of the paper leaves the saddle exit sensor SD 503 5 6 1 In amp out guide mechanism The in amp out guide motor drives the in amp out guide The position of the in and out sensor will be detected by the in and out guide home sen sor In amp out guide motor M13 SK 5 Q 5 In amp out guide home sensor PC23 SK 4511T2C009DA 12 Theory of operation ver 1 0 Aug 2006 5 Operations 5 7 Tray paper detection When paper is fed onto the tray it pushes the actuator which causes the paper detection sensor to detect the paper SD 503 Saddle tray empty sensor PC21 SK 4511T2C010DA 2 Q 9 9 13 5 Operations Theory of Operation Ver 1 0 Mar 2006 50 503 I 8 5 E o Blank Page 14 p SS KONICA MINOLTA SERVICE MANUAL THEORY OF OPERATION J 5 601 2005 07 KONICA MINOLTA BUSINESS TECHNOLOGIES INC Ver 1 0 Revision history After publication of this service manual the parts and mechanism may be subject to change for improvement of their performance Therefore the descriptions given in this service manual may not coincide with the actual machine When an
91. their upper position during the standby state and are lowered when taking up an original The Document Stoppers stay at their lower position during the standby state and retract to their upper position when taking up an original The originals are separated and only one sheet is taken up by the Take Up and Separation Rollers Atorque limiter is installed to the Separation Roller to provide the separating operation DF 601 Empty Sensor PC4 DF Document Stopper Pick Up Rollers Document Stopper Take Up Motor M1 DF I 8 e Take Up Roller Separation Roller Theory of Operation Ver 1 0 Jul 2005 6 Mechanical operations 6 2 Document take up transport mechanism The Pick Up and Take Up Rollers are rotated by the Take Up Motor and an original is taken up and transported to the Registration Roller Then the original is transported onto the Original Glass by the Registration Roller driven by the Take Up Motor and the Transport Belt driven by the Transport Motor DF 601 Transport Motor M2 DF Take Up Motor M1 DF Take Up Roller Registration Sensor PC1 DF Composition Operation Pick Up Sensor PC2 DF Registration Clutch CL1 DF 6 Mechanical operations Theory of Operation Ver 1 0 Jul 2005 A Document take up operation flow Registration Clutch ON Take Up Motor Forward Rotatio
92. transfer will be adjusted The fusing loop control will finish when the back edge of the paper passes the pre determined position on the back of the transfer roller The fusing speed will not be low only with the envelopes to avoid wrinkles 102 Theory of operation ver 3 0 Aug 2006 20 Fusing section 20 3 2 Heater lamp construction Three heater lamps are controlled to be turned ON OFF so the temperature of the heat ing roller and the fusing pressure roller will stay appropriate to completely fuse the image A Heating heater lamp construction The heating roller has two heaters with different heat quantities and light distributions bizhub C250 C252 Name Symbol Light emission Function Light will emit to heat to the edge of the Heating roller heater lamp 1 H1 Long roller Light will emit to heat only the center of Heating roller heater lamp 2 H3 Short the roller When the temperature increases temperature difference at the edge of the roller with the small size paper the heater roller heater lamp will be switched from 1 H1 to 2 H3 Temperature difference Temperature detected by heating roller thermistor 2 temper f ature detected by heating roller thermistor 1 2 o Number of printing Threshold temperature 6 The 1st sheet 30 degrees C 5 The 2nd sheet and after 4 degrees 8 Fusing pressure heater lamp construc
93. tray to the main tray Transportation to main body Paper feed in LCC Main tray Theory of Operation 1 0 Jul 2005 3 Composition Composition Operation 3 Composition 403 Tray Section Paper Feed Section 406112 102 Main Tray e S i 9 4 Drive Theory of Operation Ver 1 0 Jul 2005 4 Drive Tray Lock Solenoid SL1 LCT PC 403 Take up Motor M1 LCT Vertical Transport Motor M2 LCT Elevator Motor M5 LCT 2 S Q 5 6 406112 101 Division Board Motor M3 LCT Shift Tray Motor M4 LCT Theory of Operation 1 0 Jul 2005 5 Operations 5 Operations 51 Paper Feed Section 5 1 1 Paper Feed drive mechanism The Take up Motor drives the Pick up Roller and Paper Feed Roller to take up and feed a sheet of paper into the main body Then the Vertical Transport Motor transports the paper through the vertical transport section The Pick up Roller takes up sheets of paper and the Paper Feed and Separation Rollers ensure that only one sheet of paper is separated and fed into the main body When the drawer is slid in the lever is pushed to lower the Pick up Roller The Lift Up Upper Sensor then detects the upper limit position when the paper lifting plate is raised The Paper Emp
94. x 11 288 to 330 inclusive A4 ON ON OFF 188 to 235 inclusive Foolscap 201 to 231 inclusive 8 1 2 x 14 242 to less than 268 B4 ON ON ON 268 to less than 288 11x17 288 to less than 301 A3 301 to 330 inclusive A3 wide One of the following paper sizes can be selected to be set for Foolscap 8 x 13 8 125 x 13 25 8 25 x 13 8 5 x 13 8 65 x 13 Multi FD size 1 PC19 Multi FD size 2 PC20 9J06T2C018DA Multi FD size 3 PC21 Paper width detection resistor UN1 4038T2C184AA 93 bizhub C250 C252 S Q i bizhub 250 252 Composition Operation 19 Registration roller section 19 Registration roller section 19 1 Composition Theory of operation ver 3 0 Aug 2006 4038T2C217AA Registration roller clutch CL1 4 M 4038T2C118AA Registration roller OHP sensor PC4 Registration roller 4038T2C419AA 94 Theory of operation ver 3 0 Aug 2006 19 Registration roller section 19 3 Operation 19 3 1 Registration roller control The paper will create a loop between the feed roller and the registration roller when the paper is being conveyed in order to correct the skew The registration roller clutch CL1 is controlled in order to synchronize the timing t
95. 006 11 Charge corona section Comb electrode bizhub 250 252 4038T2C027AA Grid mesh Grid mesh Comb electrode cleaning lever only IU K 5 2 a i 5 9 a Cleaning blade Comb electrode Y M C K 38 Theory of operation ver 3 0 Aug 2006 11 Charge corona section 11 1 Operation 11 1 1 PC drum charge corona ON OFF control The grid voltage Vg applied to the grid mesh is controlled through the image stabiliza tion control bizhub C250 C252 Main motor M1 ON Color PC drum motor M2 ON Drum charge corona bias Y M C Drum charge corona bias K Developing clutch K CL4 Color developing motor M3 4038T2C024AA 11 1 2 Cleaning main erase mechanism A Cleaning main erase operation 1 The cleaning blade is pressed up against the surface of the PC drum scraping residual toner off the surface forward blade system 2 Toner which has been scraped off the surface of the PC drum is fed by the toner collecting screw back toward to the conveying screw in the rear of the machine It is then collected in the waste toner collecting box 3 The surface of the PC drum after the image transfer process is irradiated with light from the main erase lamp This neutralizes any potential left on the surface of the P
96. 1 PC Tray 2 device detection sensor PC2 PC Tray2 paper take up sensor PC9 PC Tray2 Paper empty Sensor PC6 PC Tray 2 control board Q lt j Tray lift up Sensor PC7 PC PWB Z PC Tray2 CD Paper Size Sensor 1 PC4 PC Tray 2 Paper Size board PWB I PC Tray 2 CD Paper Size Sensor 2 71 bizhub 250 252 I 8 fe e 16 Paper feed section Theory of operation ver 3 0 Aug 2006 16 2 Drive 16 2 1 Tray1 Main motor M1 Tray1 paper take up roller 4038T2C027DA 16 2 2 Tray2 Tray2 paper feed motor M1 PC Tray2 paper take up roller Vertical transport roller Tray2 lift up motor M3 PC Tray2 pick up roller Paper lifting plate Tray2 vertical transport motor M2 PC 72 Theory of operation ver 3 0 Aug 2006 16 Paper feed section 16 3 Operation 16 3 1 Paper take up control tray1 Start key ON Registration roller ON Main motor M1 Tray1 paper feed clutch CL2 Registration roller clutch CL1 Registration roller sensor PC1 4038T2C138AA 16 3 2 Paper supply level detection control tray2 There is a window in the front cover of the cassette for indicating the paper supply level tray2 only When the paper lifting plate goes up a red lever appears in the window The lower the level of the pa
97. 5 1 Switchback 5 E 5 1 1 Switchback opDeratioris 5 5 1 2 Paper exit roller drive coupling 5 H 5 1 3 Switchback Motor Control ates 5 8 5 2 Transport Control 6 5 2 1 Duplex Unit Transport Motor Control eene 6 5 2 2 2 sided printing method Theory of Operation Ver 2 0 Feb 2006 AD 503 8 E Q Q Blank Page ij Theory of Operation 2 0 Feb 2006 1 Product specifications Outline 1 Product specifications 8 A Type Q Name Duplex Unit Type Switchback and Circulating Duplex Unit Installation Mounted on the right side door of main body Document Alignment Center B Paper type Plain paper 64 to 90 g m 17 to 24 Ib A Type Thick Paper 91 to 256 g m 24 to 68 Ib Size ABS to Wide 5 5 x 8 5S to 12 x 18 Print paper size width 139 7 to 311 1 mm 5 5 x 12 25 inch length 148 0 to 457 2 mm 5 75 x 18 inch C Machine specifications Power Requirements DC 24 V 10 supplied from the main body DC 5 V 5 supplied from the main body Dimensions 110 mm W x 440 mm D x 345 mm H 4 25 inch W x 17 25 inch D x 13 5 inch H Weight 3 0 kg 6 5 Ib
98. 52 S e i 9 22 Image stabilization control Theory of operation ver 3 0 Aug 2006 22 4 Operation flow bizhub 250 252 y 2nd Image Transfer Cleaning Mode 1 Mode 2 Mode 3 Y IDC intensity IDC intensity control control Y Max density control 1 Y LD intensity adjustment 1 Y Y Max density Max density Max density control 2 control 2 control 2 Y Y LD intensity LD intensity adjustment 2 adjustment 2 y Gamma correction Gamma correction Gamma correction control control control v Y Registration Registration Registration control control control amp S g Q E 5 6 4038T2E503DB The ATVC control is performed simultaneously with the IDC intensity control Max density control 1 Use default for characteristic tilted value and Vdc value Max density control 2 Use previous setting value for characteristic tilted value and Vdc value LD laser diode intensity adjustment control 1 Use default for LD intensity for adjustment pattern LD laser diode intensity adjustment control 2 Use previous setting value for LD intensity for adjustment pattern 118 Theory of operation ver 3 0 Aug 2006 23 Image processing 23 Image processing 23 1 Scanner section image processi
99. 756 24 mm 591 56 mm E 1083 76 800 40 mm 624 68 mm F 4984 56 mm 2760 00 mm A1 554 76 transparencies mm s A2 When the paper interval calculated by best paper interval is larger than the one calcu lated by PPM control the one calculated by best paper interval will be used 81 bizhub C250 C252 e S i 9 16 Paper feed section Theory of operation ver 3 0 Aug 2006 16 3 7 Tray2 paper lifting motion control A When tray2 is slid in When the tray 2 lift up upper sensor PC 7 is unblocked OFF with the tray 2 being closed tray 2 lift up motor M3 PC will rotate to start lifting up the paper lifting plate When the tray 2 lift up upper sensor PC 7 PC is blocked ON after the paper lifting plate starts moving up the trays 2 lift up motor M3 PC will stop to stop lifting the paper lifting plate bizhub 250 252 Tray2 lift up motor M3 PC Tray2 lift up sensor PC7 PC 4036 223200 4036 260700 2 S g Q E 5 6 Tray2 slid Lifting completed Tray2 set sensor PC2 PC Tray2 lift up sensor PC7 PC Tray2 lift up motor M3 PC 4038T2C141AA B During a print cycle When the amount of paper decreases as the unit keeps printing the feed roller will grad ually come down to unblock the trays 2 lift up u
100. 8F1E507DA 1 Machine 10 Finisher FS 501 2 Reverse automatic document feeder DF 601 11 Job separator JS 601 3 Original cover OC 501 12 Finisher FS 603 4 Working table WT 501 13 Punch kit for FS 603 PK 501 5 Auto duplex unit AD 503 1 14 Finisher FS 514 6 Paper feed cabinet PC 103 15 Output tray OT 601 7 Paper feed cabinet PC 203 16 Punch kit PK 510 8 Paper feed cabinet PC 403 17 Mailbin kit MT 501 9 Desk DK 502 18 Saddle stitcher SD 503 1 Ones for Europe will be with the standard equipment NOTE Use the desk or the paper feed cabinet without fail when installing on the floor in order to keep the function and quality of the unit Theory of operation ver 3 0 Aug 2006 1 System configuration 2 2 System rear view e re N o 5 D N o a gt a 4038T1E102AC 1 Machine 7 Scan accelerator kit SA 501 2 Vendor kit VK 501 8 Security kit SC 503 Only for Europe North America and latin America only 120V area 3 Mount kit MK 706 9 Local interface kit EK 702 4 Dehumidifier heater HT 501 10 Fax kit FK 502 Only for Europe north America latin America and Australia 5 gt Mount kit MK 704 11 Key counter kit KIT 1 6 multi line ML 501 N 2 Product specifications Theory of operation ver 3 0 Aug 2006 2 Product specifications
101. C drum Q 9 9 Toner collecting screw 4038T2C030AA Cleaning blade 39 12 Developing section Theory of operation ver 3 0 Aug 2006 12 Developing section 12 1 Composition Doctor blade bizhub 250 252 Toner conveying screw Developing roller Toner supply screw 40381050360 Main motor M1 Developing clutch K CL4 2 S g Q 5 6 Color PC drum motor M2 PC drum K Developing roller Supply agitating conveying screws 40 Theory of operation ver 3 0 Aug 2006 12 Developing section 12 2 Drive Main motor M1 Toner collecting screw Developing clutch K CL4 bizhub C250 C252 Color PC drum motor M2 PC drum K PC drum Y Supply agitating conveying screws 2 Q 9 9 41 bizhub 250 252 I Ig e e 12 3 12 3 1 12 Developing section Theory of operation ver 3 0 Aug 2006 Operation Developing drive control Main motor M1 Color PC drum motor M2 Color developing motor Developing clutch K CL4 Drum charge corona bias K Drum charge corona bias Y M C Developing bias K DC Deve
102. Conforms to the operating environment of the main unit NOTE How product names appear in the document FS 514 Finisher PK 510 Punch kit e OT 601 Output tray Theory of operation ver 1 0 Aug 2006 2 Paper feed path 2 Paper feed path 2 1 Feeding paper to the 1st exit tray Transporting paper to the 1st exit tray Transporting paper Feeding paper to the 1st exit tray from the main unit e o x ES I 9JOBTICIOGAA 2 2 Feeding paper to the 2nd exit tray Transporting paper to Transportin the 2nd exit tray paper from the main unit Feeding paper to the 2nd exit tray 9JOBTICIO7AA 2 Paper feed path Theory of operation ver 1 0 Aug 2006 5 2 3 Feeding paper to 2nd exit tray When OT 601 is mounted 9 Feeding paper to the 2nd exit tray a SW CR Transporting paper to Transporting paper from Ss the 2nd exit tray the main unit lt 9JOSTICIOBAA Theory of operation ver 1 0 Aug 2006 3 Composition Composition Operation 3 Composition Elevator section Entrance transport section Intermediate transport section FS 514 PK 510 OT 601 Storage section Exit transport section Entrance switch section Staple section 5 Q 9
103. F ON OFF L B5S ON ON ON OFF OFF H OFF ON OFF OFF H 5 55 ON OFF H 5 ON ON ON OFF H 9 A4S OFF OFF OFF ON L 2 A4S OFF OFF OFF OFF L 8 ON ON ON ON L 8 A3 Wide OFF ON ON ON L FLS ON OFF OFF OFF L Inch area Papersize Tray1 paper size board Tray1 CD paper size swi sw2 Sw3 sensor PC9 5 5 x 8 58 OFF OFF ON OFF H 8 5x 11 OFF OFF ON OFF L 8 5x 11S OFF OFF ON ON L Executive OFF ON OFF ON L Executive S OFF ON ON OFF H 5 5 x 8 5 ON OFF ON OFF L 8 5 x 14 ON ON ON OFF L 11x17 ON ON ON ON L This combination will also be used due to the sensor s ability H Blocking L Unblocking 76 Theory of operation ver 3 0 Aug 2006 16 Paper feed section Tray1 paper size board PWB I 2 1 4036ma2042c1 77 bizhub C250 C252 2 Q 9 9 bizhub 250 252 I 8 Q oO 16 Paper feed section Theory of operation ver 3 0 Aug 2006 B Tray2 Tray2 paper size board PWB I PC Tray2 CD paper Tray2 CD paper Paper size size sensor 1 size sensor 2 swi swe2 SW3 SWA PC4 PC PC3 PC ON ON OFF ON ON H L B4 ON ON ON OFF H L A4S OFF ON OFF ON ON L H A4 ON OFF OFF OFF
104. MPOSITION ie diee ntn e RR reae ER ser re nds 65 15 2 DING Mn 15 3 Operation 15 3 1 Toner collecting mechanism sess 67 15 3 2 Waste toner box set 67 15 3 3 Waste toner near full full detection 68 16 Paperfeed SectlOli 70 16 1 Composition fis cairn nire eie Hee ti EHE al 70 16 11 WAY 70 16 1 2 Tr8y2 iiie 71 16 2 DIVO 72 16 2 1 Tray1 72 16 22 peg iron ea Pe HER EVREUX cavasasittastinaveceaus NINE ARREEERE 72 16 9 Op ration ipiri Be tens case cas rui taut tuimus dieti ts eS 73 16 31 Paper take up control 73 16 3 2 Paper supply level detection control 2 73 16 3 3 Paper near empty paper empty 74 16 3 4 Paper type rrt tnnt riti ernst epe iio dba 75 16 3 5 Paper size detection 76 16 3 6 Paper Interval control PPM 79 16 3 7 Tray2 paper lifting motion control 82 17 Bypass section Bizhub 0250 crece ce eid ces 83 lii bizhub C250 C252
105. Mode Size Type Capacity Plain Paper 50 to 90 g m Recycled 13 25 to 24 Ib paper Government 65 A5S A5 B5S B5 B6S standard 45 4 B4 A3Wide postcards 5 1 8 1 5 5 x 8 1 5 Envelope 81 x 115 8 1 x 11 8 x 14 11x 17 Special OHP transparencies 200 sheets Sort group Translucent up to a height of 24 mm 311 15 mm x 457 2 mm paper 12 25 x 18 inch Label Min 90 mm x 139 7 mm Letterhead 3 5 x 5 5 inch Thick 91 to 150 g m paper 1 24 25 to 40 Ib Thick 151 to 209 g m 2 40 to 55 5 Ib Thick 210 to 256 g m paper3 55 75to 68 Ib Plain Sortoffset A5 B5S B5 A4S A4 B4 ak om Recycled 13 25102415 200 sheets group off 8 x 115 8 1 2 x 11 aber to a height of 24 set 8 x 14 11 x 17 pap up to a height of 24 mm Thick 91 to 256 g m Max paper 24 25 to 68 Ib 297 mm x 431 8 mm Plain ue x 17 inch Paper 50 to 90 in 13 25 to 24 Ib Sort stable 182 mm x 148 5 mm i 205 7 25 x 5 75 inch pap p 9 Thick 91 to 256 g m paper 24 25 to 68 Ib e ui LE 2 Y 2 x En e m LE e e m x m 1 Product specifications Theory of operation ver 1 0 Aug 2006 C Machine specifications Dimensions 282 mm W x 368 mm D x 57 mm H 11 inch W x 14 5 inch D x 2 25 inch H Weight 0 7 kg 1 5 Ib D Operating environment
106. Motor respectively through the combination of the Gears and Cams etc This Motor drive is monitored with the Staple Folding Motor Clock Pulse Sensor The Folding Position Sensor is mounted to detect the position of the Folding Rollers and the Pressure Plate The stack of folded paper is transported with the Folding Rollers and then exits via the Booklet Exit Rollers FS 603 Folding Home Position Sensor 1 Bundle of Paper Composition Operation Upper Folding Roller 4583M631AA 4583M632AA Lower Folding Roller 27 5 Operation Theory of Operation Ver 1 0 Jul 2005 5 4 4 Paper folding start position Paper folding is created by the Paper Folding Plate and the Paper Pressure Plate At the same time when the Folding Rollers start to rotate the Paper Pressure Plate starts pressing the stack of paper to the contact area of the Paper Folding Rollers For half of the Folding Rollers no rubber material is used except at the center and both ends of the Folding Rollers This half of the Upper and the Lower Folding Rollers con tacts each other at the center and both ends and is only used to transport the paper thus preventing wrinkles The other half of the Upper and the Lower Folding Rollers contacts each other com pletely thereby folding and then transporting the paper FS 603 Upper Folding Roller Bundle of Paper Moe Paper Pressure Plate Take up Entrance 2 S g
107. OFF H L B5S OFF OFF ON OFF L L B5 ON ON OFF OFF H L ABS 1 ON OFF OFF OFF OFF L L 11x17 ON OFF ON ON H H Legal ON ON ON OFF L H Letter S ON OFF OFF ON L H Letter OFF OFF OFF OFF H H Invoice S 2 OFF OFF OFF OFF L Folio S 8 1 4 x 13 ON ON ON ON L H FLS ON ON ON ON L H aem ON OFF ON H H K e OFF OFF OFF H H 1 Metric area only 2 Inch area only H Blocking L Unblocking Tray2 paper size board PWB I PC 4036 2043 1 78 Theory of operation ver 3 0 Aug 2006 16 Paper feed section 16 3 6 Paper Interval control PPM control It sets the proper interval between papers pitch according to the paper size and mode for multiple printing A Basic paper interval control bizhub C250 C252 Paper feed direction Space between papers lt gt Paper interval 4038T2C194AA Basic paper interval group Paper size A1 INVOICE POSTCARDS S 5 B5 QUART G LETTER 55 A4 A2 INVOICE S LETTER B 58 G LETTER FLS 192 mm x 268 mm S LETTER S 45 FLS 203 2 mm x 330 2 mm S G LEGAL S FOLIO S LEGAL S FOLIO Eu S 11 148 B4S Comp Form S W LETTER S A3 WIDE S Long paper i e S
108. Punching operation for the second sheet of paper is made when the Punch Axis turns 180 deg in the reverse direction Punch Axis Stops at Home Position Punch Axis rotates by 90 deg in forward direction and punch holes are made Punch Axis rotates by another 90 deg in forward direction and punch operation is com pleted Punch Home Position Detection gap Sensor PI1P PK P d Off Center Cam SO 9 a gt Theory of Operation 1 0 Jul 2005 3 Mechanical operations 3 A 1 2 3 2 Side registration operation The Side registration drive for the Punch Slide Unit is made by the Side Registration Motor The Home position of the Punch Slide Unit is detected with the Side Registration Home Position Sensor The Punch Slide Unit detects the trailing edge of the paper with the Trailing Edge Detec tion and the Side Registration Sensors and then moves to the position of the trailing edge according to the size of the paper And paper edge is detected by means the LED light emitted from LED Board and received by the Photo Sensor Board Combine this and the next two slides into one transitional slide Operation 1 Trailing Edge Detection Sensor detects paper leading edge Side Registration Motor rotates Punch Slide Unit moves toward front side Side Registration Home Position Sensor PI2P PK Side Registration Mot
109. S 55 G LETTER 8 eu T mm x 268 mm S FLS 192 mm x 268 mm S LETTER S 45 FLS 203 2 mm x 330 2 mm FLS 203 2 mm x 330 2 mm S G LEGAL S FOLIO S FOLIO Eu S A5 A4S INVOICE C S LEGAL S FOLIO Eu S 11 145 LETTER S G LEGAL S LEGAL S QUART B4S Comp Form S B5 B4S G LETTER LETTER 11 145 D A3S W LETTER S Comp Form S W LETTER S 4 A3 WIDE S Long paper 80 Theory of operation ver 3 0 Aug 2006 PPM control paper interval list 16 Paper feed section Mode System Group v x Y 2 speed A1 331 20 mm 263 120 mm A2 340 40 mm 268 64 mm Plain paper B 467 36 mm 388 24 mm 371 68 mm monochrome av 599 84 mm 441 6 mm 476 56 mm plain paper mm s color D 680 80 mm 502 32 mm 493 12 mm E 719 44 mm 531 76 mm 520 72 mm F 3312 00 mm 2270 56 mm 1 316 48 mm 332 12 mm 332 12 mm 263 12 mm 263 12 mm A2 342 24 mm 268 64 mm Thick paper Bie B 470 12 mm 391mm 373 52mm thick paper 1 mmis C 603 52 mm 442 52 mm 479 32 mm thick paper 2 D 684 48 mm 505 08 mm 493 12 mm E 724 04 mm 534 52 mm 524 40 mm F 3329 48 mm 2282 52 mm 1 1474 80 mm 602 60 mm 392 84 mm 315 56 mm A2 512 44 mm 602 60 mm 402 04 mm 322 00mm B 703 80 mm 636 64 mm 447 12 mm paper 35 5 903 44 mm 736 00 mm 575 00 mm thick paper 3 mm s D 1024 88 mm
110. S 1 LASER APPARAT VAROITUS Laitteen kayttaminen muulla kuin tassa kaytt6ohjeessa mainitulla tavalla saat taa altistaa k ytt j n turvallisuusluokan 1 ylitt v lle n kym tt m lle laser s teilylle puolijohdelaser Laserdiodin suurin teho 10 mW aallonpituus 775 800 nm VARNING Om apparaten anv nds annat s tt i denna bruksanvisning specificerats kan anv ndaren uts ttas f r osynlig laserstr lning som verskrider gr nsen laserklass 1 halvledarlaser Den maximala effekten f r laserdioden 10 mW v gl ngden 775 800 nm VARO e Avattaessa ja suojalukitus ohitettaessa olet alttiina n kym ttom lle laser s teilylle Al katso s teeseen VARNING e Osynlig laserstraining n r denna del r ppnad och sp rren r urkopplad Betrakta ej str ien Norway ADVERSEL Dersom apparatet brukes p annen m te enn spesifisert i denne bruksanvisn ing kan brukeren utsettes f r unsynlig laserstr lning som overskrider grensen for laser klass 1 halvleder laser Maksimal effekt till laserdiode 10 mW b lgelengde 775 800 nm SAFETY AND IMPORTANT WARNING ITEMS 6 2 A laser safety label is attached to the inside of the machine as shown below Laser Safety Label CLASS 1 LASER PRODUCT LASER KLASSE 1 PRODUKT 2371 L SNE a USE AS RI EN Only for the U S A
111. Sensor goes OFF The original is ejected on the Exit Tray with lower speed Exit Motor OFF 12 Theory of Operation Ver 1 0 Jul 2005 6 Mechanical operations 6 4 Turnover mechanism two sided mode n the Double Sided Mode an original which has its 1st side scanned is turned over and then transported to the scan position again for the 2nd side scanning DF 601 Exit Motor M3 DF Turnover Gate Turnover Solenoid SL1 DF Turnover Solenoid SL1 DF A Turnover operation flow Exit Motor Forward Rotation e S e i 9 Transport Motor Forward Rotation Turnover Solenoid ON Switching of paper path in turnover section Turnover Sensor ON Transport Motor OFF Exit Motor OFF Transport Motor Backward Rotation Exit Motor Forward Rotation Starts the original transportation to its scan position Turnover Sensor OFF v Turnover Solenoid OFF Exit Motor OFF Transport Motor OFF 13 6 Mechanical operations Theory of Operation Ver 1 0 Jul 2005 6 5 Raised lowered position detecting mechanism 6 5 1 Document size detection The 20 degree Open Detection Mechanism enables the main body to detect the docu ment size when the RADF is used as the Original Cover of the main body there is the Lever Actuator provided in the RADF body that blocks or unblocks a sensor to initiate reco
112. When turning the power ON in a stable condition with Main power ON power OFF with rated voltage Target temperature setting No Status Heating roller Pressure roller TH1 TH2 A is ON and the temperature inside 443 C 140 C is ON the temperature inside 155 C 155 C 2 In standby state 168 C 168 C Temperature control for the 1st copy 173 C 173 C Temperature control for the 2nd to 5th copies 163 C 163 C 3 Printing Temperature control for the 6th to 15th copies 155 C 155 C Temperature control for the 16th to 50th copies 148 C 143 C Temperature control for the copies after 50th copy 148 C 138 C 4 In standby state 168 C 168 C 5 Low power mode 140 C 140 C 108 Theory of operation ver 3 0 Aug 2006 20 3 9 Warm up control 20 Fusing section There are two modes for the warm up control depending on the temperature inside the unit at the beginning of the warm up The temperature inside the unit is determined by the temperature three minutes after the warm up has started Temperature inside the unit at the beginning of the warm up More than 17 C 17 C or less A When the temperature inside the unit is more than 17 C at the beginning of the warm up Target control temperature Name Symbol Target control temperature Heating roller thermistor 1 TH1 168 C Fusing pressure rolle
113. Wide 12 1 x 18 65 thick paper Tray1 bypass lich 11x17 to 5 1 x 8 1 5 Wide 12 1 4X 18 4x6S thick paper Metric area to B5 55 Tray2 Inch area 11x17 to 8 1 11 8 1 x 11S Copy exit tray capacity Plain Paper 350 sheets Thick Paper 20 sheets OHP transparencies 1 sheet N o N o a 2 a 2 Product specifications Theory of operation ver 3 0 Aug 2006 2 3 Types of paper Paper source Type Tray2 Tray1 Multiple bypass Plain paper 60 to 90 g m Translucent paper O O O N d f N OHP transparencies crosswise feeding only Thick paper 1 91 to 150 g m Thick paper 2 151 to 209 g m Thick paper 3 210 to 256 g m 1 Postcards Copy paper type _ 20 sheets or less 10 sheets or less Envelopes Labels Long size paper 127 to 160 g m Width 90 to 311 1 mm 139 7 to 297 mm 90 to 311 1 mm Copy paper Length 139 7 to 457 2 mm 182 to 431 8 mm 139 7 to 457 2 mm dimensions Long size paper 210 to 297 mm x width x length 1200 mm or less 1 Image is not guaranteed when thick paper 3 is used Optional paper feed cabinet Only the plain paper weighing 64 to 90 g m is reliably fed Automatic duplex unit On
114. after the Motor has been driven for a given number of pulses The Exit Motor is driven to trans port a stack of paper with the Exit Arm of the Exit Belt rotating in synchronization with the Lower Exit Roller onto the 1st Paper Exit Tray FS 603 Paddle 1st Paper Exit Tray Exit Belt Lower Exit Roller Exit Belt Home Position Sensor PI7 FN Exit Arm 4583M618AA 2 Q 9 9 5 2 5 Group mode Sort mode Paperis taken back onto the Finishing Tray and then fed out onto the 1st Paper Exit Tray 4583M604AA 4583M605AA 1st Paper Exit Tray Paper 4583M606AA Paper Transport Finishing Tray 1st Paper Exit Tray 13 5 Operation Theory of Operation Ver 1 0 Jul 2005 5 2 6 Offset mode In the Offset Mode Paper is taken back onto the Finishing Tray and shifted to the front or rear side with the Aligning Plate Then a stack of paper per set is fed out onto the 1st Paper Exit Tray However even if printing has not been completed for all sets of prints when 10 sheets for the large size whose length is longer than 300mm or 30 sheets for the small size whose length is shorter than 299mm are stacked a set of sheets is fed out onto the 1st Paper Exit Tray FS 603 Fed out onto the 1st Paper Exit Tray 4583M607AA 4583M608AA I S E Paper Stacking for 4 sets in Sort Mode o 5
115. and the paper width detection resis tor Moving paper guide varies the resistance value of the paper width detection resistor E Metric area Paper width detection resistor Multi FD size1 Multi FD size2 Multi FD size3 UN1 Paper size PC19 PC20 PC21 detected Width mm 80 to less than 115 A6S OFF OFF OFF 115 to 144 inclusive 65 196 to 225 inclusive 5 242 to 268 inclusive 5 133 to 164 inclusive A5S 169 to less than 196 B5S 196 to 225 inclusive A4S 225 to less than 288 8 1 2 x 11 288 to 330 inclusive A4 2 ON OFF 188 to 235 inclusive FLS 201 to 231 inclusive 8 1 2 x 14 8 242 to less than 268 B4 ON ON ON 255 to less than 288 11x17 288 to less than 301 301 10 330 wide One of the following paper sizes can be selected to be set for FLS 8x 13 8 125 x 18 25 8 25 x 13 8 5 x 13 8 65 x 13 92 Theory of operation ver 3 0 Aug 2006 18 Bypass section bizhub C252 Inch area Paper width detection resistor Multi FD size1 Multi FD size2 Multi FD size3 UN1 Paper size PC19 PC20 PC21 detected Width mm 80 to less than 115 A6S GER EE OFF 115 to 144 inclusive B6S 201 to 231 inclusive 5 1 2 x 8 1 2 242 to 282 inclusive 7 1 4 x 10 1 2 125 to 155 inclusive 5 1 2 x 8 1 2 S 169 to less than 201 7 1 4 x 10 1 2 S ON OFF OFF 201 to 231 inclusive 8 1 2 x 115 225 to less than 288 8 1 2
116. ansferred image or brush effect The fusing speed is set either to faster or slower than the system speed The fusing loop detect sensor PC3 checks the shape of a loop between the 2nd trans fer part and the fusing roller to switch the motor clock as necessary Switching the setting on the motor clock will change its rotation speed as well as the fusing roller s rotation speed to control how far the paper loop li OFF Fusing loop detect sensor 4038T2C195AA C Operation flow 1 2 3 It starts controlling when the front edge of the paper reaches to the predetermined position before the fusing roller The fusing speed will be low 2 so the paper will create a loop between the 2nd transfer roller and the fusing roller When the paper loop more than specified the fusing loop detect sensor PC3 will be ON The fusing speed will increase when the sensor turns ON 4 296 When the paper sags less than specified the fusing loop detect sensor PC3 will be OFF The fusing speed will decrease when the sensor turns OFF 2 Operations explained above will keep the amount of the paper loop within specified range so the speed difference between the fusing and the paper conveyance for image
117. any change has been made to the descriptions in the service manual a revised version will be issued with a revision mark added as required Revision mark To indicate clearly a section revised show to the left of the revised section A number within represents the number of times the revision has been made To indicate clearly a section revised show A in the lower outside section of the correspond ing page A number within 4 represents the number of times the revision has been made NOTE Revision marks shown in a page are restricted only to the latest ones with the old ones deleted When page revised in Ver 2 0 has been changed in Ver 3 0 The revision marks for Ver 3 0 only are shown with those for Ver 2 0 deleted When a page revised in Ver 2 0 has not been changed in Ver 3 0 The revision marks for Ver 2 0 are left as they are 2005 07 1 0 Issue of the first edition Date Service manual Ver Revision mark Descriptions of revision Theory of Operation 1 0 Jul 2005 CONTENTS FS 501 Outline 1 Product Specification e 1 Composition Operation 2 Overall COMPOSITION s irent eee emt 5 3 Genter Gross Section aaae E 6 4 7 5 amp rr enr neret ee 8 5 1 Paper transport 5 1 1 Paper transport
118. are together transported onto the Finisher Tray The switchback sequence of the paper is performed by turning the motor backward which turns the Lower Path Transport Roller and Storage Roller backward The sheet of paper to be transported next to the one subjected to the switchback sequence is transported via the upper paper path No switchback sequence is carried out if the interval between sheets of paper is wide as when using paper of a large size Three 4 originals for two print sets Q aA Qe 2 Bt 8 2 ke 8 Sa 3 Sheets of paper for the first print set 3 Sheets of paper for the second print set The sheets of paper for the first print are transported via the upper paper path onto the Finisher Tray The first and second sheets of paper of the second print set are transported together one on top of the other L 388 CU um mm The first sheet of paper of the second print set is transported via the lower paper path 2x 8 9220 9 2 8 9 2 Ag S gt TNI SN 5 OD Op The Exit Rolls are pressed against the Exit Roller to feed the sheets of paper of the first print set out At the same time the first and second sheets of paper of the second print set are transported toward the exit The first sheet of paper of the second p
119. ation ver 3 0 Aug 2006 15 2 Drive bizhub 250 252 amp S g Q E 5 6 Transfer toner collecting screw 4038 2 0250 66 Theory of operation ver 3 0 Aug 2006 15 Toner collecting section 15 3 Operation 15 3 1 Toner collecting mechanism Toner collected by the cleaning blade of the transfer belt and waste toner in each of the imaging units are conveyed by the corresponding toner collecting screws to the waste toner box bizhub C250 C252 WS IU toner collecting screw lt 22 22 LE gt A e Transfer belt toner SQ collecting screw SG 2 Q 9 9 4038T2C023DA 15 3 2 Waste toner box set detection The waste toner full detection signal on the water toner full sensor PC8 detects set unset of the waste toner box Set unset of the waste toner box is detected when the front door is closed with the main power being ON The printing will stop when the waste toner box is not set 67 15 Toner collecting section Theory of operation ver 3 0 Aug 2006 15 3 3 Waste toner near full full detection control A Waste toner detection mechanism To prevent false detection an agitation screw is mounted in the waste toner box so that the waste toner is accumulated in the bottle evenly The waste toner full sensor PC8 detects the area whe
120. ay Theory of Operation Ver 1 0 Jul 2005 The Elevator Tray moves up or down according to certain conditions 5 4 1 Elevator tray ascent descent mechanism The Elevator Tray is moved up or down by the Elevator Motor that turns forward or back ward Condition Elevator Tray Control Standby Stationary at the upper limit position The position at which the Elevator Tray Upper Limit Sen sor PQ PWB D FN detects the Elevator Tray Paper fed into tray Lowers to the lower limit position depending on the number of sheets of paper to be fed into the tray If the Elevator Tray Upper Limit Sensor PQ PWB D FN is activated while paper is being fed into the tray the tray is lowered until the sensor is deactivated Paper removed Moves up to the upper If the Elevator Tray Paper Sensor PC8 FN is unblocked when paper is removed from the tray the tray is raised into tray dd limit position until the sensor is blocked Moves down and then up Lowers the tray for a given period of time then raises it Overload ay 9 detected after paper has been fed the upper limit position An overcurrent is detected the Elevator Motor during this period Elevator Tray Elevator Tray Paper Sensor PC8 FN Elevator Tray Upper Limit Sensor PQ PWB D FN Elevator Motor M7 FN 20 Theory of Operation 1 0 Jul 2005 5 Mechanical operations 5
121. ay 2 Job Separator Cover 3 Center cross section Theory of Operation Ver 1 0 Jul 2005 3 Center cross section e o I 2 fe 1 Job Separator Exit Roller 3 Job Separator Transport Roller 2 Job Separator Exit Roll 4 Job Separator Transport Roll Theory of Operation 1 0 Jul 2005 4 Mechanical operation 4 Mechanical operation 4 1 Job tray paper transport mechanism The job Separator Transport Roller and job Separator Exit Roller turn to transport the paper into the job Tray as the motor is energized The 1 Tray Entrance Switching Solenoid Upper Lower Entrance Switching Solenoid and 3 Entrance Switching Solenoid are energized to select the paper path into the job Tray JS 601 Job Separator Exit Roller Job Separator Transport Roller e g i 9 Upper Entrance Motor M4 FN 3 Entrance Switching Solenoid SL4 FN 4 Mechanical operation Theory of Operation Ver 1 0 Jul 2005 JS 601 I 8 5 E o Blank Page p SS KONICA MINOLTA SERVICE MANUAL THEORY OF OPERATION FS 603 2005 07 KONICA MINOLTA BUSINESS TECHNOLOGIES INC Ver 1 0 Revision history After publication of this service ma
122. ay cause fire 5 6 SAFETY AND IMPORTANT WARNING ITEMS Ventilation CAUTION The product generates ozone gas during operation but it will not be harmful to the human body If a bad smell of ozone is present in the following cases ventilate the room a When the product is used in a poorly ventilated room b When taking a lot of copies c When using multiple products at the same time Stability N CAUTION Be sure to lock the caster stoppers In the case of an earthquake and so on the product may slide leading to a injury Inspection before Servicing N CAUTION Before conducting an inspection read all relevant docu mentation service manual technical notices etc and proceed with the inspection following the prescribed pro cedure using only the prescribed tools Do make 69 adjustment not described the documentation If the prescribed procedure or tool is not used the prod uct may break and a risk of injury or fire exists Before conducting an inspection be sure to disconnect the power plugs from the product and options When the power plug is inserted in the wall outlet some units are still powered even if the POWER switch is turned OFF A risk of electric shock exists The area around the fixing unit is hot You may get burnt 5 7 SAFETY AND IMPORTANT WARNING ITEMS Work Performed with the
123. ayable guide motor turns the cams at the front and rear thereby moving the layable guide up or down The layable guide home sensor detects the position of the layable guide motor Layable guide motor M14 SK 2 7 Q 9 3m 9 Layable guide home sensor PC24 SK Cam 4511T2C006DA 5 4 2 Operation timing 1 Raising the movable guide power ON sleep cancelled error reset paper removed from tray 2 Lowering the movable guide When the transport of a copy set stack to the center stapling position is com pleted 3 Raising the movable guide When the trailing edge of a copy set stack deactivates the saddle exit sensor 5 Operations Theory of Operation Ver 1 0 Mar 2006 5 5 Center creasing mechanism The entrance sensor detects the trailing edge of the paper The paper feed amount is determined for each paper size as counted from the timing when the trailing edge is detected Center creasing is effected as follows Specifically the paper undergoes a switchback operation and is transported to the center creasing posi tion as the motor is turned backward The crease chopper is lowered and the center of the paper is pinched between the crease rollers and this creates a crease in the paper After the center creasing the paper is transported by the transport roller and then the registration roller as they are driven in that order SD 503 h T
124. be Heating roller ther abnormally high heating heater mistor 2 THS When the temperature of TH2 goes above specified degree and stays for more than one second before Fusing pressure the fusing temperature control starts the fusing tem gp TH2 222 C roller thermistor 1 perature will be judged to be abnormally high fusing pressure heater E When the temperature of TH2 goes above specified 2 degree and stays for more than one seconds after pressure the fusing temperature control has started the fusing gP TH2 222 C 6 A roller thermistor 1 temperature will be judged to be abnormally high 5 fusing pressure heater 20 3 13 Abnormally high temperature detection hardware protection e It forces the heater relay to be OFF to turn the heater lamp OFF when the high tempera ture trouble cannot be detected due to CPU run away It will be judged as fusing unit abnormally high temperature heating heater C3751 when detecting the heater relay OFF Power supplied to the heater lamps can be shut off before the thermostat operates It protects the fusing unit from being damaged A Heater lamp OFF control Control Thermistor Symbol Spediiod temperature When the temperature of TH4 5 go over Heating roller ther TH4 the temperature by the comparator the com mistor 3 parator circuit on the mechanical control S
125. ch OFF When re writing flash ROM In low power or sleep At paper jam in trouble or when the door is open Power supply cooling All drive systems are OFF due to the cause except paper fan motor 2 M9 jam trouble or door being open Stop Half speed In standby At warm up initial operation image stabilization function Full speed M or printing Plug in sub power switch OFF In standby low power or sleep When re writing flash ROM At paper jam in trouble or when the door is open Ozone ventilation fan All drive systems are OFF due to the cause except paper motor M14 jam trouble or door being open Stop e S e i 9 Half speed At warm up initial operation image stabilization function 1 Full speed or printing At plug in sub power switch OFF At warm up initial operation image stabilization function or sleep When re writing flash ROM At paper jam in trouble or when the door is open All drive systems are OFF due to the cause except paper jam trouble or door being open Stop Fusing cooling fan motor 1 M13 Half speed When in low power or in standby Full speed When printing At plug in sub power switch OFF At warm up low power or sleep At initial operation image stabilization or function 1 When re writing flash ROM At paper jam in trouble or when the door is open All drive
126. chine When any change has been made to the descriptions in the service manual a revised version will be issued with a revision mark added as required Revision mark To indicate clearly a section revised show to the left of the revised section A number within represents the number of times the revision has been made To indicate clearly a section revised show A in the lower outside section of the correspond ing page A number within 4 represents the number of times the revision has been made NOTE Revision marks shown in a page are restricted only to the latest ones with the old ones deleted When page revised in Ver 2 0 has been changed in Ver 3 0 The revision marks for Ver 3 0 only are shown with those for Ver 2 0 deleted When a page revised in Ver 2 0 has not been changed in Ver 3 0 The revision marks for Ver 2 0 are left as they are 2006 02 2 0 N Error corrections 2005 07 1 0 Issue of the first edition Date Service manual Ver Revision mark Descriptions of revision Theory of Operation Ver 2 0 Feb 2006 CONTENTS AD 503 5 Outline 1 Product specifications 2 Paper Feed Composition Operation 3 M S 3 4 tI 4 4 1 Switchback Drive 4 42 Transport Drive 5 icr TE E
127. ctive tool can be dangerous if it is brought into the laser beam path Use utmost care when handling tools on the user s premises The Print Head is not to be disassembled or adjusted in the field Replace the Unit or Assembly including the Control Board Therefore remove the Laser Diode and do not perform Control Board trimmer adjustment SAFETY AND IMPORTANT WARNING ITEMS WARNING INDICATIONS ON THE MACHINE Caution labels shown are attached in some areas on in the machine When accessing these areas for maintenance repair or adjustment special care should be taken to avoid burns and electric shock High voltage This area generates high voltage Be careful not to touch here when the power is turned to avoid getting electric shock This area generates high voltage Be careful not to touch here when the power is turned ON to avoid getting an electric shock 4038P0C506DA 5 18 SAFETY AND IMPORTANT WARNING ITEMS Do not position the used Waste Do not burn used Toner Cartridges Toner Box so that it is standing Toner expelled from the fire is dan on end or tilted otherwise toner gerous may spill WARNING A ATTENTION A WARNING ATTENTION BLACK SCHWARZ 2 7572 A WARNUNG ATENCI N AZI LA AVVISO AVISO burn used Imaging Units Toner expelled from the fire is dangerous
128. d ON or the front door is opened and closed When a new IU is detected an TCR adjustment sequence is carried out Operation when a new IU is detected Transfer belt TCR automatic Transfer belt Image is retracted adjustment cleaning adjustment stabilization Operation when a new IU is not detected 1st image transfer ATVC adjustment Transfer belt cleaning Transfer belt is retracted Image stabilization 2 Q 9 3m 9 4036ma2133c0 EEPROM board 4038T2C009AA 4038T2C012AA 33 9 Imaging unit section IU section Theory of operation ver 3 0 Aug 2006 B When life is reached The IU life counter is used to keep track of IU life When the life value is reached a warning message is given on the screen When a pre determined number of printed pages are produced after the life value has been reached the machine inhibits the initiation of a new print cycle with a message prompting the user to replace the IU given on the screen bizhub C250 C252 When a life value is reached At print stop Need replace Imaging Unit Please replace following unit s PelloU the HePlacingd Lhsbr EGions and close all doors Transfer Unit Fusing Unit Imaging Unit Magenta Yellow Black 4038T2E504DA 4038T2E505DA The warning screen and IU replace
129. d depending on the width of the paper Aligning Plate CD Aligning Home Position Sensor PC9 FN CD Aligning Motor M5 FN Finisher Tray 15 FS 501 e S e i 9 5 Mechanical operations Theory of Operation Ver 1 0 Jul 2005 B Paddles The Upper and Lower Paddles are turned to align the paper in the feeding direction The Upper Paddles are turned by the Upper Paddle Motor and Upper Paddle Solenoid The Lower Paddles are turned by the Lower Paddle Motor FS 501 Upper Paddle Solenoid SL3 FN Upper Paddle Motor M15 FN Lower Paddle Lower Paddle Motor M9 I 8 E fe e 16 Theory of Operation Ver 1 0 Jul 2005 5 Mechanical operations 5 3 Stapling 5 3 1 Stapling mechanism The Stapling Unit performs the stapling action When the Stapling Motor turns the Clinch Arm lowers Then the Stapler moves up to drive a staple into paper and the staple is formed Staple position is the rear corner stapling at a point FS 501 Clinch Arm Stapler e S e i 9 Stapling Motor 17 5 Mechanical operations Theory of Operation Ver 1 0 Jul 2005 5 3 2 Stapling unit moving mechanism Stapling Unit is moved by the Stapling Unit Mov
130. d error codes and their countermeasures etc APPENDIX Parts layout drawings connector layout drawings timing chart overall layout drawing are attached C 1 Notation of the service manual A Product name In this manual each of the products is described as follows 1 PWB MFP MFP Control Board 2 bizhub C250 C252 Main Unit 3 Microsoft Windows 95 Windows 95 Microsoft Windows 98 Windows 98 Microsoft Windows Me Windows Me Microsoft Windows NT 4 0 Windows NT 4 0 or Windows NT Microsoft Windows 2000 Windows 2000 Microsoft Windows XP Windows XP When the description is made in combination of the OS s mentioned above Windows 95 98 Me Windows NT 4 0 2000 Windows NT 2000 XP Windows 95 98 Me NT 2000 XP B Brand name The company names and product names mentioned in this manual are the brand name or the registered trademark of each company C Feeding Direction When the long side of the paper is parallel with the feeding direction it is called Short Edge Feeding The feeding direction which is perpendicular to the Short Edge Feeding is called the Long Edge Feeding Short Edge Feeding will be identified with S Abbreviation for Short Edge Feeding on the paper size No specific notation is added for the Long Edge Feeding When the size has only the Short Edge Feeding with no Long Edge Feeding S will not be added to the paper size Sample notation Paper size Feeding direction Notation x Long
131. d in from the main body drawer and the main body starts the first print 8 cycle to produce the print image of the second page of the original t E E el 4066T2C501DA Operation 2 Immediately before the 1 sided print leaves the Paper Exit Roller the direction of rotation of the Paper Exit Roller is 2 reversed and the 1 sided print is transported toward and into the Duplex Unit 4066T2C502DA Operation 3 The 1 sided print moves through the Duplex Unit and is 84 directly subject to the second print cycle without being stopped 2 Q 4066T2C503DA Theory of Operation 2 0 Feb 2006 5 Operation Operation 4 The main body carries out the second print cycle to pro 8 Q duce the print image of the first page of the original on the t em other side of the 1 sided print ili lt 4066T2C504DA Operation 5 While feeding the first 2 sided print out of itself the main body carries out the first print cycle for the second sheet of paper to produce the print image of the fourth page of the original 4066T2C505DA Steps 2 through 5 are repeated A4 2 originals 1 to 2 print mode Registration Roller OFF 1 ON 15 Q 9 9 Exit Sensor PC2 ON E L iForward Backward Forward Duplex Unit Switchback ON Rotation Rotation
132. ddle Motor M9 FN CD Aligning Motor M5 FN Stapling Unit Moving Motor ger M6 FN Shift Motor M8 FN Lower Entrance Motor M2 FN Exit Roller Rolls Spacing Motor M13 FN Upper Paddle Motor M15 FN Exit Motor M3 FN Upper Entrance Motor M4 FN Elevator Motor M7 FN Entrance Motor M1 FN Storage Roller Rolls Spacing Motor M12 FN FS 501 15 Q 9 9 5 Mechanical operations Theory of Operation Ver 1 0 Jul 2005 5 Mechanical operations 51 Paper transport 5 1 1 Paper transport mechanism FS 501 A Entrance section paper transport mechanism The Entrance Roller is turned to transport the paper into the Finisher as the Entrance Motor is energized Entrance Motor M1 FN Entrance Roller I 8 E fe a e Theory of Operation Ver 1 0 Jul 2005 5 Mechanical operations 19 tray paper transport mechanism Paper transport to the 1 Tray takes place when the Finisher is in the Group Sort mode The Upper Path Transport Roller and 1 Tray Exit Roller turn to transport the paper into the 15 Tray as the motor is energized The 18 Tray Entrance Switching Solenoid and Upper Lower Entrance Switching Solenoid are energized to select the paper path into the 18 Tray Upper Entrance Motor
133. detects the width of the original Mounting the optional sensor on a machine intended for the metric areas permits detec tion of inch sizes Mounting the optional sensor on a machine intended for the inch areas permits detection of metric sizes 9 a i 255 N f Automatic document feeder 20 degrees Original cover angle sensor 202 346 1 mm 313 5 mm 4038T2C103AA Original read S Exposure unit CCD unit L position 30 mm E 4 5 _ Original Size 2 detection 6 Original standard position sensor 1 PC203 Original size detection sensor 2 PC204 option Exposure unit 4037T2E597AA With RGB image processing board the original size will be judged by the origi nal size sensor and CCD An original of an irregular size is rounded to the nearest standard size 21 7 Scanner section IR section Theory of operation ver 3 0 Aug 2006 Metric area amp China areas N wo Table 1 5 5 Original size CCD width mm E detection sen N sor 1 153 0 187 0 200 0 215 0 225 0 261 5 275 0 278 1 PC203 OFF A5S B5S 16KS A4S B5 B5 16k A4 ON FLS B4 8k
134. duced at the front and rear on the transfer belt Each of IDC registration sensor 1 and 2 at the front and rear reads the corresponding pattern The amount of color shift in the main scanning direction is then calculated and stored in memory Based on the data representing the amounts of color shift the machine calculates how much each of the different colors should be corrected The correction data is further stored in memory Based on the data stored in memory the machine controls each dot during production of image outputs thereby correcting the color shift varying the timing at which the LD is turned ON The color shift correction is made when the right door is opened and closed the transfer Belt is removed and reinstalled the IU is removed and reinstalled the main power switch is turned OFF and ON or an image stabilization sequence is carried out from the control panel Detection pattern for sub Detection pattern for main scanning direction scanning direction HH 4038T2C007AA IDC registration Sensor 1 Transfer belt and 2 SE1 SE2 29 bizhub C250 C252 i e S i 9 8 Write section PH section Theory of operation ver 3 0 Aug 2006 8 2 7 Skew control mechanism When the printer head is mounted on the main body installation plate image distortion skew occurs due to mounting error Therefore the
135. e latest ones with the old ones deleted When page revised in Ver 2 0 has been changed in Ver 3 0 The revision marks for Ver 3 0 only are shown with those for Ver 2 0 deleted When a page revised in Ver 2 0 has not been changed in Ver 3 0 The revision marks for Ver 2 0 are left as they are 2006 08 1 0 Issue of the first edition Date Service manual Ver Revision mark Descriptions of revision Theory of operation ver 1 0 Aug 2006 CONTENTS FS 514 PK 510 OT 601 Outline 1 Product specifications MELIUS 1 2 EE 1 3 c 2 Paper feed path intret nr tr re epe rae 21 Feeding paper to the 1st exit tray 22 Feeding paper to the 2nd exit tray 2 3 Feeding paper to the 2nd exit tray When OT 601 is mounted 8 Composition Operation 3 Composition E 9 4 BIS TET 5 Operations 5 1 Transport Section niii 11 5 1 1 Entrance switch Section iterato 12 5 1 2 Entrance transport section 13 5 1 3 Intermediate transport 13 5 1 4 Storage 14 5 1 5 Exit transport section reete 14 5 2 Elevator Section 15 5 2 1 Elevator mechanisrri
136. e sure that all screws components wiring connec tors etc that were removed for safety check and mainte nance have been reinstalled in the original location Pay Xpcs special attention to forgotten connectors pinched cables aD forgotten screws etc 7 A risk of product trouble electric shock and fire exists Handling of Consumables WARNING Toner and developer are not harmful substances but care must be taken not to breathe excessive amounts or let the substances come into contact with eyes etc It may be stimulative If the substances get in the eye rinse with plenty of water immediately When symptoms are noticeable consult a physician Never throw the used cartridge and toner into fire You may be burned due to dust explosion 6 lt Handling of Service Materials CAUTION Unplug the power cord from the wall outlet Drum cleaner isopropyl alcohol and roller cleaner ace e tone based are highly flammable and must be handled with care A risk of fire exists Do not replace the cover or turn the product ON before any solvent remnants on the cleaned parts have fully evaporated Q A risk of fire exists 5 10 SAFETY AND IMPORTANT WARNING ITEMS Handling of Service Materials N CAUTION Use only a small amount of cleaner at a time and take care not to spill any liquid If this happens immediatel
137. ecifications 5 9 2 way Paper Take Up Cabinet Type Front loading type 2 way paper take up device Installation Desk type Document Alignment Center B Paper type Type Plain paper 60 to 90 g m 16 to 24 Ib Recycled paper 60 to 90 g m 16 to 24 Ib Size ABS to A3 5 5 x 8 55 to 11 x 17 Capacity 3rd Drawer 500 sheets 80 g m 21 25 Ib 4th Drawer 500 sheets 80 g m 21 25 Ib C Machine specifications Power Requirements DC 24 V 10 96 supplied from the main body DC5V 5 Max Power 75 W or less Consumption Dimensions 570 mm W x 548 mm D x 263 mm H 22 5 inch W x 21 5 inch D x 10 25 inch H Weight PC 103 22 0 kg 48 5 Ib PC 203 26 0 kg 57 25 Ib D Operating environment Conforms to the operating environment of the main body NOTE These specifications are subject to change without notice 2 Paper Feed path Theory of Operation Ver 1 0 Jul 2005 2 Paper Feed path Paper feed from the 3rd tray O Q En i5 Transportation to main body Main body PC 103 PC 203 transportation in PC Only PC 203 Paper feed from the 4th tray 4061t1c001aa Theory of Operation 1 0 Jul 2005 3 Composition Composition Operation 3 Composition PC 103 PC 203 Cassette Section Paper Feed Section PC 103 PC 203
138. ectric shock 5 3 SAFETY AND IMPORTANT WARNING ITEMS 3 CHECKPOINTS WHEN PERFORMING ON SITE SERVICE KONICA MINOLTA brand products are extensively tested before shipping to ensure that all applicable safety standards are met in order to protect the customer and customer engi neer hereafter called the CE from the risk of injury However in daily use any electrical equipment may be subject to parts wear and eventual failure In order to maintain safety and reliability the CE must perform regular safety checks 1 Power Supply Connection to Power Supply NWARNING Check that mains voltage is as specified Connection to wrong voltage supply may result in fire or ab electric shock Connect power plug directly into wall outlet having same configuration as the plug Use of an adapter leads to the product connecting to inadequate power supply voltage current capacity aD grounding and may result in fire or electric shock If proper wall outlet is not available advice the customer to contact qualified electrician for the installation Plug the power cord into the dedicated wall outlet with a capacity greater than the maximum power consumption Q If excessive current flows in the wall outlet fire may result If two or more power cords can be plugged into the wall outlet the total load must not exceed the rating of the wall outlet 4 If excessive current flows in the wall outl
139. ed Mode Standard Mode 35 to 128 g m 9 1 4 to 34 Ib Plain Paper 2 Sided Mode 50 to 110 g m 13 1 4 to 29 1 4 Ib Type of Document Thick Paper Mode 1 Sided Mode Plain Paper 129 to 210 g m 34 1 4 to 55 3 4 Ib iin Original Detection 1 Sided 2 Sided Mode ode 2 Plain Paper 50 to 110 g m 13 1 4 to 29 1 4 Ib Metric area Detectable Document 68 to Size 1 Inch area 5 1 2 x 8 1 28 5 1 2 x 8 1 2 to 11 x 17 Capacity Standard Mode Mixed Original Detection Mode Document Feed Table 100 sheets 80 g m 21 1 4 Ib Original Exit Tray 100 s heets 80 g m 21 1 4 Ib Thick Paper Mode Document Feed Table 38 sheets 210 g m 55 3 A Ib Original Exit Tray 38 sh eets 210 g m 55 3 4 Ib 1 For the Combined Original Detection Mode Refer to the Mixed Original Detection Enabled Size Combination Table Gm Q 1 Product specifications Theory of Operation Ver 1 0 Jul 2005 D Machine specifications Power Requirements DC 24 V supplied from the main body DC 5 V generated within the DF 601 Mex Power 60 W or less Consumption Dimensions 586 mm W x 519 mm D x 135 mm H 23 inch W x 20 1 2 inch D x 5 1 4 inch H Weight 14 2 kg 31 25 Ib E Operating environment Conforms to the operating environment of the main body NOTE These specifications are subject to change without notice Theor
140. emperature in order to save the power consumption during standby state A Contents of control Target control temperature Name Symbol Target control temperature Heating roller thermistor 1 TH1 140 C Fusing pressure roller thermistor 1 TH2 140 C 109 bizhub C250 C252 e S i 9 20 Fusing section Theory of operation ver 3 0 Aug 2006 20 3 11 Protecting from the abnormally high temperature N The machine provides protection against abnormally high temperature of the fusing unit in g the following three steps Details for each control are described in the following sections 3 N Level Name Control e t detects the high temperature troubles which most likely occur Software When the heating roller thermistor 1 and the fusing pressure roller ther Level 1 protection mistor 1 detect abnormally high temperature the trouble code for the abnormally high temperature will be displayed and the printing will be pro hibited When the level 1 protect is not executed for some reason level 2 protect will be performed When the heating roller thermistor 3 and fusing pressure roller thermistor 2 Level 2 Hardware detect abnormally high temperature the heater lamp relay will be forced to protection be OFF and will shut down power supply for each heater lamp When the heater relay stays OFF for specified period of time the t
141. er 4348M618AA 4348M619AA Paper Lifting Plate Lift up Arm During a print cycle 1 As the paper is consumed the sensor is unblocked 2 The paper lifting plate goes up Lift up Upper Sensor PC114 PC PC 123 PC 4348M620AA 4348M618AA Theory of Operation Ver 1 0 Jul 2005 5 Operations 5 2 Cassette Section 5 2 1 Paper size detection When the Trailing Edge Stop of the drawer is moved the circular plate located on the bot tom of the drawer turns allowing the four FD Paper Size Sensors on the Paper Size Board Moving the Edge Guide activates or deactivates the two CD Paper Size Sensors through the cutout in the lever The combination of the four FD Paper Size Sensors and two CD Paper Size Sensors that are either activated or deactivated determines the size of the paper loaded in the drawer The Tray Device Detection Sensor detects that the drawer is slid into position as it is slid in Lift up Motor M124 PC M125 PC Length Detection al En M is 4348M604AA 4348M605AA Circular Plate FD Paper Size Sensors Paper Size Board PWB I 3 PC PWB I 4 PC 7 Device Detection Sensor 122 121 Width Detection 4348M606AA 4348M607AA CD Paper Size Sensor 1 PC118 PC PC127 PC CD Paper Size Sensor 2 PC119 PC PC128 PC PC 103 PC 203 2 7 Q 9 9 103 203 Composit
142. er 3 0 Aug 2006 7 Scanner section IR section 7 Scanner section IR section 71 Composition bizhub C250 C252 4038T2C103AA 4038T2C121AA Scanner motor M201 Original size detection sensor 1 PC203 Scanner motor drive board PWB IC Original size detection sensor 2 2 PC204 5 Q 9 3m 9 Original cover Lens angle sensor PC202 CCD unit Size reset Switch 8201 Mirror unit 4038T2C004DA Scanner home sensor PC201 Exposure unit Image processing board PWB C 2 Europe China Central America 220 240V Areas North America only Countries other than the above mentioned are standard settings 17 7 Scanner section IR section Theory of operation ver 3 0 Aug 2006 7 1 1 CCD unit Scanning direction CCD sensor bizhub 250 252 Sub scanning direction 2 Im Main scanning direction 9 325 um EE 1 9 325 4036 2602 0 7 2 Drive Scanner motor amp S g Q 5 6 Exposure unit Mirror unit a 4 4 Rese x qd GPRS A o 9 Sa gt Scanner drive Dn cable R Ug Scanner drive Scanner home sensor cable F 75 4038
143. er Exit Roller 1 Paper Exit Roller 2 Feeding the Paper into Duplex Unit 4066T2C516DA 5 1 2 Paper exit roller drive coupling mechanism When the Duplex Unit is mounted the tip of the Duplex Unit Lever raises the Idle Lever to cut off the drive from the main body Fusing Rollers and the Paper Exit Roller is driven by the Switchback Motor Switchback Motor M1 DU Idle Lever RY a oe Oo Paper Exit Roller 2 4066T2C518DA 5 1 3 Switchback Motor Control Rotation of the Switchback Motor is controlled by the signals output from the Duplex Control Board AD 503 2 Q 9 9 5 Operation Theory of Operation Ver 2 0 Feb 2006 5 2 Transport Control 5 2 1 Duplex Unit Transport Motor Control Rotation of the Duplex Unit Transport Motor is controlled by the signals output from the Duplex Control Board E a lt 5 2 2 2 sided printing method The following two types of 2 sided printing methods are available 2 sided printing with a single sheet of paper resident in the system 2 Sided Printing Methods 2 sided printing with two sheets of paper resident in the system FD length 215 9 mm or less A Operations in 2 sided printing with a single sheet of paper resident in the system Operation 1 Paper Exit Roller 5 The first sheet of paper is taken up and fe
144. er path 41 C250 paper path N wo N 9 ive N N 4038T1C104AA 10 Theory of operation ver 3 0 Aug 2006 4 Paper path 4 2 C250 paper path N o 5 N o a gt del 9J06T1C501AB 11 N N o a gt lt N 5 Image creation process 5 Theory of operation ver 3 0 Aug 2006 Image creation process 1 Photoelectric conversion Y 11 Transfer belt cleaning 8 1st image transfer 10 2 IR Image processing 3 Printer Image processing 9 2nd image 4 PC drum transfer 5 PC drum charging 13 Main erase V 6 Laser exposure 12 PC Drum cleaning 4038T1C105AA 7 Developing 1 Photoelectric The light reflected off the surface of the original is separated into different colors using the color filters R G and B CCD then converts it into a cor conversion responding electric signal and outputs the signal to the IR imaging pro cessing section IR image The electric signal is converted to 8 bit digital image signals Afte
145. esponded to a Card Version G4 Error corrections Corresponded to a Card Version 2006 02 2 0 2005 07 1 0 Issue of the first edition Date Service manual Ver Revision mark Descriptions of revision Theory of operation ver 3 0 Aug 2006 CONTENTS bizhub C250 C252 main unit General T 2 2 3 TypeS of paper trier rr er E EE E 6 2 4 Maintenance 2 5 Machine Specifications tcisccciccveccsvsccessecsasetesscsvectsetaaiocsaiectsseneetteotscscsecssecasdesotnas 7 2 6 Operating 7 2 7 8 2 8 Scan TUNCHONS 8 3 Center cross section EUH EE EUM 4 1 250 paper 10 4 2 0250 11 5 Image creation PIOCOSS wevvciecsiscsssessacenssecscsecssdenecetencesoatesstsassecsancnstcaeccauvadceteacacesass 12 Composition operation 6 Overall composition 6 1 Timing chart at machine 15 6 2 Control block 16 T Scanner section IR 17 y NEED 17 7 1 1 SEDE Em 18 7 2 Drive s 1 3 Operati n uii
146. et fire may result Make sure the power cord is plugged in the wall outlet securely Contact problems may lead to increased resistance overheating and the risk of fire Check whether the product is grounded properly If current leakage occurs in an ungrounded product you may suffer electric shock while operating the product Connect power plug to grounded wall outlet 5 4 SAFETY AND IMPORTANT WARNING ITEMS Power Plug and Cord WARNING When using the power cord set inlet type that came with this product make sure the connector is securely inserted in the inlet of the product When securing measure is provided secure the cord with the fixture properly If the power cord inlet type is not connected to the prod uct securely a contact problem may lead to increased resistance overheating and risk of fire Check whether the power cord is not stepped on pinched by a table and so on Overheating may occur there leading to a risk of fire Check whether the power cord is damaged Check whether the sheath is damaged If the power plug cord or sheath is damaged replace with a new power cord with plug and connector on each end specified by KMBT Using the damaged power cord may result in fire or electric shock Do not bundle or tie the power cord Overheating may occur there leading to a risk of fire Check whether dust is collected around the power plug
147. ever to open the shutter on the IDC sensor during retraction The cam will press the pressure lever to close the shutter on the IDC sensor while the roller is pressing bizhub C250 C252 2nd image transfer roller Shutter Retracted Open Pressed Closed A Shutter open close operation 1 Drive from the 2nd image transfer pressure retraction motor is transmitted through a gear train to the drive gear 2 The drive gear will rotate to turn the cam half way Pressing the pressure lever down will open the shutter 3 Turning the motor ON again will turn the cam half way Releasing the pressure lever will close the shutter 2nd image transfer pressure retraction motor M5 Shutter amp S g Q E 5 5 IDC registration sensor 2 SE2 IDC registration Shutter sensor 1 SE1 Shutter Pressure lever 4038T2C169AA 4038T2C170AA When sensor shutter is closed When sensor shutter is open 4038T2C108AA 4038T2C107AA 58 Theory of operation ver 3 0 Aug 2006 14 Transfer corona section 14 3 5 ATVC auto transfer voltage control To optimize image transfer output the machine is provided with ATVC control or auto transfer voltage control The control lets a constant current flow through each of the image transfer rollers Then from the voltage detected the resistances of the 1st image transfer roller 2nd image transfe
148. g roller and one on the fus ing pressure roller When the temperature of the fusing roller increases abnormally high the thermostat will detect it and shut down the power supplied to the heater lamp This controls the high temperature protection thermostat protection I 8 oO 20 3 5 Fusing roller pressure retraction mechanism The pressure roller is always pressed to the heating roller normal position By switching the release lever the pressure of the fusing pressure roller can be switched between envelope position paper jam countermeasure position 104 Theory of operation ver 3 0 Aug 2006 20 Fusing section A Envelope position By switching the release lever to the lower direction shown below the pressure of the fusing pressure roller will be envelope position Envelope position is for preventing the wrinkle when feeding envelopes To switch from envelope position to the normal position move up the release lever to the normal position bizhub C250 C252 Normal position normal pressure Envelope position low pressure Release lever 4038T2C200AA 4038T2C199AA e e i 9 NOTE Leaving the unit for 30 days or more in normal position will deform the pressing part of the fusing pressure roller Be sure to switch the fusing release lever to the envelope
149. ge K EEPROM board K Toner cartridge Y M C EEPROM board Y M C 45 13 Toner supply section Theory of operation ver 3 0 Aug 2006 13 2 Drive Toner supply motor C K M7 bizhub C250 C252 Toner supply motor Y M M6 Dos I 2 w S 5 5 46 Theory of operation ver 3 0 Aug 2006 13 Toner supply section 13 3 Operation N rel 13 3 1 Toner replenishing mechanism control A Toner replenishing mechanism A single toner supply motor is turned either forward or backward to supply toner of two different colors toner supply motor for and and toner supply motor for Y and N Toner supply K toner C toner Toner supply Y toner M toner motor C K M7 motor Y M M6 Turned forward Energized Deenergized Turned forward Energized Deenergized Turned backward Deenergized Energized Turned backward Deenergized Energized Toner supply motor C K M7 e S i 9 One way clutch Replenishing operation 1 Drive of the toner supply motor is transmitted through a gear train to the drive gears of the toner cartridges of two colors A one way clutch is used for each of these drive gears meaning that the drive gear turns in one direction only Either one of these two drive gears is turned according to whether the toner su
150. guto Paper tolor Select Image ES WX inishing 4038T2E506DA 4038T2E507DA e A different toner empty screen is displayed if user is selected for unit change available from the tech rep mode 48 Theory of operation ver 3 0 Aug 2006 13 3 3 Shutter mechanism 13 Toner supply section To prevent toner from being spilled when the toner cartridge is removed from the machine there is a shutter mechanism provided When the toner cartridge is installed in the machine the shutter opens Put the replacement port face down to keep the cover close Before toner cartridge is installed Shutter 4038T2C018AA When toner cartridge is installed 4038T2C019AA 49 bizhub C250 C252 7 Q 9 E 9 14 Transfer corona section Theory of operation ver 3 0 Aug 2006 14 Transfer corona section 14 4 Composition 14 1 1 1st image transfer section bizhub C250 C252 4038T2C105AA 2nd image transfer roller 1st image transfer roller K 5 S Q 5 Retraction roller Cleaning blade Fusing motor M4 4038T2C151AA 1st Image transfer pressure retraction clutch CL3 1st image transfer retraction Pressure cam position sensor PC6 4038T2C018DB
151. h aligning plate Paper aligning portion Aligning plate Paper stoppers lt Alignment home position sensor 1 PC7 2 Q 9 9 Align motor 2 M6 Alignment home position sensor 2 PC8 9J08T2C010DA B Paper aligning sequence n normal print and staple mode the paper is fed into the tray at its center position f no stapling is involved in the sort or group copy mode the aligning plate shifts 15 mm to the front or rear from the center This stacks copy sets stacks in a saw tooth manner each being offset by about 30 mm with respect to the others This shifting motion is not performed when sets stacks are fed into the mail bins or the saddle unit Aligning plate Ea approx 30 mm Center L 1 Normal Staple Shift sort group copy 4349T2C511AA 21 5 Operations Theory of operation ver 1 0 Aug 2006 5 3 3 Exit mechanism There is a paper holding paddle provided at the exit roller for preventing the copy set stack on the exit tray from being pushed by a new copy set stack that is being fed out Except the staple mode The subsequent copy set stack is fed out with the copy sets stacks previously resident on the tray being held down by the paper holding paddle The exit paddle home position sensor spring clutch and exit paddle solenoid control the retracted position and
152. h the data machine checks if the car tridge is new or not bizhub C250 C252 i 4038T2C015AA 4038T2C017AA B Toner empty detection control toner empty condition can be divided into groups normal near empty empty Normal Available number of copy is 1K or more Near empty Available number of copy is under 1K Empty Toner remaining level is O 2 S g Q 5 Toner near empty detection control When new toner is set toner remaining level is set to TC EEPROM board Based on the remaining level the machine calculates and gives subtraction of the toner replenishing amount from the hours which the toner replenishing motor has turned When the level reaches the given amount of toner remaining toner near empty warning is displayed D Toner empty control After a near empty condition is detected the toner density detected by the TCR sensor at every T C ratio detection timing is compared with the target toner density to calculate the density difference The count number defined according to each density difference is added and when the value reaches the given level toner empty warning is displayed Toner near empty Toner empty user There is no Toner Follow ghg Heblacing iris rucuion close ail doors Ready to cop Toner Cartridge Y gt needs to be goon Memory 100 Basic auto
153. he actuator for the 1st image transfer retraction position sensor down 6 The actuator unblocks the 1st image transfer retraction position sensor PC6 to detect the slide s movement Turn the 1st image transfer pressure retraction clutch CL3 OFF The cam will stop rotating to stop the sliding plate 9 The 1st image transfer roller Y M and C will keep their retraction position 54 Theory of operation ver 3 0 Aug 2006 14 Transfer corona section N wo Main motor M4 Fusing drive 5 motor M4 a N f 1st image transfer pressure retraction clutch CL3 4038T2C021DB Operation timing Start key ON Paper moves past 2nd image transfer roller 2 Q 9 9 Fusing drive motor M4 Tst image transfer pressure retraction clutch CL3 1st image transfer retraction position sensor PC6 4038T2C136AA 55 bizhub 250 252 2 S g Q E 5 6 14 Transfer corona section Theory of operation ver 3 0 Aug 2006 B Pressure position changing mechanism To extend the service life of the PC drum Y M C the pressure position of the 1st image transfer roller is changed between the monochrome mode and the color mode in the monochrome mode the 1st image transfer roller Y M C is left in the retracted position and the PC drum Y M C is stop
154. he unit starts writing the image and conveying paper bizhub C250 C252 A Adjustment e The amount of the loop of the paper can be adjusted in the service mode changing the adjustment value will change the timing the feed roller turns ON The timing of the paper conveyance can be adjusted in the service mode changing the adjustment value will change the timing for the registration roller clutch CL1 to turn ON Paper will finish creating a loop ON before the registration roller Registration roller sensor PC1 ON Registration roller Registration roller rotates clutch CL1 A Feed roller Feed roller stop Feed roller returns 4038T2C143AA 2 Q 9 9 OHP sensor PC4 Registration roller Registration roller sensor PC1 Feed roller Paper Feed roller 4038T2C186AA 4038T2C185AA 95 19 Registration roller section Theory of operation ver 3 0 Aug 2006 19 3 2 OHP detection e S sensor PC4 checks to prevent printing on the paper other than g OHP detection will be performed after paper made the loop at the registration roller 5 When the detection shows the different result from the setting the operation panel printing will stop to display media error N 2 Paper type set from Results of OHP sensor Operation control panel
155. heat inside the unit in order to prevent temper ature from increasing at DC power supply part and the controller part Power supply cooling fan motor 2 M9 It exhausts the accumulated heat inside the DC power supply box in order to avoid temperature increase at DC power supply part A dust filter cooling fan are mounted inside the ventilation duct in order to remove dust power supply cooling fan motor 2 sucked with the air inside the unit Ozone ventilation fan motor M14 A white belt may occur on the image because of the lower sensitivity of the PC drum due to ozone accumulated around the PC drum charge corona In order to avoid this trouble ozone filter removes the ozone inside the PC drum charge corona to keep the sensitivity of the PC drum Ozone accumulated around PC drum charge corona will be absorbed by Ozone filter and be removed Fusing cooling fan motor 1 M13 Odor accumulated between TC part and fusing part is absorbed by the odor filter to be removed In order to keep the temperature between TC part and fusing part as well as motor part heat accumulated inside the unit will be exhausted Fusing cooling fan motor 2 M11 When the paper with toner heated at fusing part exit while still at high tem perature toner may be transferred to other paper on the exit tray In order to avoid this air is applied to cool the toner and paper Suction fan motor M10 Paper will be sucked between 2nd t
156. heating roller and the fusing pressure roller Each roller is monitored to detect the possible winding e is judged to be heating roller paper winding C3A01 fusing pressure roller paper wind ing 02 when the temperature of the thermistor decreases for a certain amount com pare to before the specified time 4038T2C196AA 107 20 Fusing section Theory of operation ver 3 0 Aug 2006 When the paper winding is detected the unit will exceptionally stop When other troubles occur the unit will stop after the process to stop the unit The fusing drive motor M4 needs to be rotated when going through this process When the paper jam occurs rotating the fusing motor M4 will make the paper stuck to the fusing roller even worse so the unit will exceptionally stop immediately without the process for stopping the machine bizhub C250 C252 20 3 8 Fusing temperature control chart When with plain paper A4 paper horizontal single side 5 sheets and the temperature inside the unit is over 17 degrees C with main power ON Warm up completed Power switch ON Start key ON Printing complete Low power mode 2 3 200 1st 2nd to 5th sheet sheets gt 173 168 163 I 8 Q Q 155 148 143 140 138 17 9 110 sec 4038T2C144AA
157. hutter is closed to cover the exit while the elevator tray is moving The elevator motor provides the drive for the elevator tray The shutter motor opens or closes the exit port Theory of operation ver 1 0 Aug 2006 5 Operations 5 2 4 Shutter open close mechanism The shutter at the exit is open with the opening for exit being disclosed When the tray moves the shutter closes to prevent the hand from being caught at the exit The shutter is opened or closed by the shutter motor that turns a gear train for raising or lowering the shutter The shutter home position sensor detects the position of the gear thereby determining the position of the shutter The shutter detection switch is mounted to prevent the hand from being caught when the shutter opens and closes Pressing the shutter detection switch will stop the shutter s opening or closing operation as well as tray s up or down movement Shutter home position sensor PC14 CN Shutter detect switch S2 1 LOIN Shutter 9J08T2CO08DA 19 FS 514 PK 510 OT 601 2 Q 9 9 FS 514 PK 510 OT 601 amp S g Q 5 E 5 6 5 Operations Theory of operation ver 1 0 Aug 2006 53 Paper aligning section 5 3 1 Paper aligning mechanism sub scan direction Sheets of paper are aligned properly and stapled together inside the transport
158. i EE pe Eee ee eet 19 7 3 1 Scan and exposure lamp control esee 19 7 3 2 Original size detection control sse 21 8 Write section PH 24 8 4 X Composition nennen ennt nennen ener nnne 24 8 2 Operation aca tei RR Mere 8 2 1 Outline 8 2 2 Laser exposure process 2 einer tonii tre iate 26 8 2 3 Laser emission timing 26 8 2 4 Laser shutter mechanism eese eene nenne nennen netten nonne 27 bizhub C250 C252 g S Q 9 9 bizhub 250 252 8 Q Q ij Theory of operation ver 3 0 Aug 2006 8 2 5 Laser emission 28 8 2 6 Registration control color shift correction System 29 8 2 7 Skew control 30 9 Imaging unit section IU 31 ComipoSition eniin e rere eR EE nc arin 31 9 2 DIVE 9 3 Operation 9 3 1 33 10 Photo Conductor SCCHION 35 10 1 CompoSitionm enea
159. i Rotation Motor M1 DU OFF Motor M2 DU OFF Duplex Unit Transport ON 1 rm Duplex Unit Transport ON NNNM LS gu Sensor2 PC2 DU OFF 4066T2E519DA 5 Operation Theory of Operation Ver 2 0 Feb 2006 B Operations in 2 sided printing with two sheets of paper resident in the system Operation 1 Paper Exit Roller The first sheet of paper is taken up and fed in from the main body drawer and the main body starts the first print cycle to produce the print image of the second page of the original t AD 503 4066T2C506DA Operation 2 Immediately before the first 1 sided print leaves the Paper 2 Exit Roller the direction of rotation of the Paper Exit Roller is reversed and the first 1 sided print is transported toward and into the Duplex Unit same time the second sheet of paper is taken up and fed into the main body 4066T2C507DA Operation 3 The main body carries out the first print cycle for the second sheet of paper to produce the print image of the fourth page of the original Atthe same time the first 1 sided print is transported through the Duplex Unit I 8 Q e fe Operation 4 The main body produces the print image of the first page of the original on the first 1 sided print that has been fed through the Duplex Unit the same time the second sheet of paper is subjected to a
160. ifting plate and also by the bypass lift up sensor PC14 Bypass paper feed clutch CL5 Bypass paper Bypass paper feed clutch CL5 take up roller Bypass lift up sensor PC14 4038T2C183AA Bypass paper pick up Bypass paper pick up solenoid SL2 Bypass lift up sensor PC14 solenoid SL2 Start key ON Move to standby position Main motor M1 Bypass paper pick up solenoid SL2 Bypass lift up sensor PC14 Bypass paper feed clutch CL5 4038T2C142AA 87 bizhub C250 C252 2 7 Q 9 9 18 Bypass section bizhub C252 Theory of operation ver 3 0 Aug 2006 A 18 Bypass section bizhub C252 18 1 Composition Paper empty sensor PC13 Paper side plate N wo D 9 Tel l C N a 9J06T2C010DA 5 9J06T2CO11DA Paper side plate Multi FD size1 Multi FD size2 Multi FD size3 take up roller sensor PC19 sensor PC20 sensor PC21 5 S Paper lifting plate ew 1 eat Paper empty sensor 13 Bypass separator roller Paper width detection resistor UN1 9 06 2 0120 88 Theory of operation ver 3 0 Aug 2006 18 2 Drive 18 Bypass section bizhub C252 Bypass paper feed clutch CL5 Bypass paper pick up solenoid SL2 9J06T2C013DA Lift up positio
161. iling edge Transport Motor is stopped Paper transport is stopped Punch Motor is driven to punch holes Transport Motor is driven at the same time Side Registration Motor is driven in reverse direction Punch Slide Unit is returned to its home position PK 501 PK 4 PK 131 Trailing Edge Detection Sensor Punch Holes e S e i 9 3 Mechanical operations Theory of Operation Ver 1 0 Jul 2005 PK 501 PK 4 PK 131 I 8 5 E o Blank Page KONICA MINOLTA 2005 KONICA MINOLTA BUSINESS TECHNOLOGIES INC Printed in Japan DD4038C E3 0800 Use of this manual should be strictly supervised to avoid disclosure of confidential information
162. iming at which the laser lights are irradiated for each main scan line 26 Theory of operation ver 3 0 Aug 2006 8 Write section PH section 8 2 4 Laser shutter mechanism There is a shutter mechanism provided to prevent the PH from being contaminated with foreign matter such as dust when the front cover is opened or closed or prevent the emission laser from leaking outside for any reason The shutter opens by pressing shutter guide at insertion of the imaging unit bizhub C250 C252 Shutter Shutter guide e S i 9 27 8 Write section PH section Theory of operation ver 3 0 Aug 2006 8 2 5 Laser emission area A Main scan direction CD The print start position in the CD direction is determined by the CD print start signal HSYNO that is output from the MFP control board PWB MFP and the width of the paper The laser emission area is determined by the paper size Both edges of the paper are however void image areas mm 0 118 inch each in the copy and fax mode and 4 2 mm 0 165 inch each in the print mode bizhub C250 C252 B Sub scan direction FD The print start position in the FD direction is determined by the image write start signal TOD that is output from the MFP control board PWB MFP and the length of the paper The laser emission area is determined by the paper size The area of 4 2 mm 0 165 inch o
163. in Ver 2 0 has not been changed in Ver 3 0 The revision marks for Ver 2 0 are left as they are 2006 08 1 0 ssue of the first edition Date Service manual Ver Revision mark Descriptions of revision Theory of operation ver 1 0 Aug 2006 CONTENTS MT 501 i z Outline 1 Product Specification M 1 2 Paper Dall iss 2 Composition Operation 3 3 4 Pj 4 5 Operations 5 1 Paper transport 5 5 2 Paper path selection mechanism 6 5 3 tita tera d E Cd tee ERA CREAR 7 2 St 9 9 Theory of operation ver 1 0 Aug 2006 MT 501 8 E Q Q Blank Page ij Theory of operation ver 1 0 Aug 2006 1 Product specification Outline 1 Product specification 5 Name Mailbin kit Installation Install at the top section of the finisher elevator tray Number of bins 4 bins Number of sheets stored per bin 125 sheets 90 g m 24 Ib Plain paper Storable paper 50 to 90 g m 13 25 to 24 Ib Recycled paper Metric area A5S B5 A4 Storable paper size Inch area 5 1 8 1
164. ing Motor The Staple Home Position Sensor detects Stapling Unit at respective home positions The Stapling Unit is moved with reference to this home position FS 501 Stapling Unit Staple Home Position Sensor PC 14 FN Stapling Unit Moving Motor M6 FN I 8 6 18 Theory of Operation 1 0 Jul 2005 5 Mechanical operations 5 3 3 Staple sheet empty detection The Staple Empty Detecting Sensor is used to detect whether there is a staple sheet not in the Staple Cartridge When there are about 20 staples left in the Staple Cartridge a staple sheet empty condi tion results and a staple empty display is given on the control panel of the main body staple sheet empty condition is detected during a stapling sequence that particular sequence is continued until it is completed A staple empty display is then given After a new Staple Cartridge has been loaded the Stapling Motor is energized until the Self Priming Sensor detects loaded staples L thereby feeding the staple sheet to the stapling position FS 501 Self Priming Sensor e g i 9 nes 4 Staple Empty Detecting Sensor 19 FS 501 I 8 e 5 Mechanical operations 5 4 Elevator tr
165. ion the lines are thinned out The scanning area is divided into two in the FD direction The lightness histogram for AE processing is generated by the lightness histogram generated through ACS processing The AE level of the original is determined based on this histogram and AE processing is performed R G and B data are then converted to value and color component data for adjust ments of saturation lightness and hue Each image area whether it is a color edge area black edge area dot area ora continuous gradation area is discriminated to optimize edge emphasis and smoothing just right for the image The color component data R G B are converted to the Y M C and K density data Also the masking processing which compensates for the deviation in the spectral reflection characteristics of the toner and UCR BP processing are per formed on the image data Other types of processing performed are the improved reproduction of black text edge emphasis smoothing and color balance In photo mode and PC print each image data of Y M C K is compressed to reduce the consumption of data capacity Binary data gets gamma correction at this time Makes the necessary corrections so that the printed gradations have linear characteristics since the image density of the input image data is not directly proportional to that of the printed image because of the changing developing and PC drum characteristics In photo mode and PC print the image
166. ion Operation 5 Operations Theory of Operation Ver 1 0 Jul 2005 5 2 2 Paper level indicator mechanism All drawers now use the universal paper size tray for greater functionality There is a window in the front cover of the drawer that serves as the Paper Level Indica tor showing the amount of paper that is still available for use A red lever is attached to the paper lifting plate of the drawer and as the paper lifting plate raises the red lever becomes visible in the window The more the red lever is visible the lesser the amount of paper will be available for use 4348M609AA Cassette bottom plate Lever paper lifting plate 4348M610AA 4348M611AA Operated by the paper lifting Paper Level Indicator on the plate of the drawer front cover of the drawer SS is SS KONICA MINOLTA SERVICE MANUAL THEORY OF OPERATION PC 403 2005 07 KONICA MINOLTA BUSINESS TECHNOLOGIES INC Ver 1 0 Revision history After publication of this service manual the parts and mechanism may be subject to change for improvement of their performance Therefore the descriptions given in this service manual may not coincide with the actual machine When any change has been made to the descriptions in the service manual a revised version will be issued with a revision mark added as required Revision mark To indicate clearly a section revised show to the left of the revised section A
167. ision marks for Ver 2 0 are left as they are 2006 08 1 0 Issue of the first edition Date Service manual Ver Revision mark Descriptions of revision Theory of operation ver 1 0 Aug 2006 CONTENTS SD 503 Outline 1 Product specification 2 Paper pallio Composition Operation 3 M 3 4 4 41 Center creasing 4 2 Center stapling section 5 STATON RR 51 Paper transport 5 5 2 Exit roller 6 5 2 1 Pressure release 6 5 2 2 P 7 5 3 Stapling e HUE ERR REGE ERROR HR ERES 8 5 4 Layable guide 5 4 1 Layable guide 9 5 4 2 Operation timing uccisi sind aed E 9 5 5 Center creasing Mechanism 10 5 5 1 jeu 11 56 In amp o utguilde ocn rta eot ta trennen 12 5 6 1 In amp out guide mechanism essent 12 5 7 Tray paper detection
168. it roller the motor is energized to press the upper exit roller up against the lower exit roller thereby feeding the copy set stack out into the tray SD 503 Cam Cam Upper exit roller Cam 2 7 Q 9 9 Upper exit roller Cams are rotated The upper exit roller is Cams are rotated The upper exit moved upward roller is moved downward 4511T2C005DA retraction pressing 5 Operations Theory of Operation Ver 1 0 Mar 2006 5 3 Stapling mechanism There are two the stapling units in the saddle kit each being fixed to a specific position Since the unit is for center stapling only it is made up of the upper clincher portion and the lower stapling portion The copy set stack moves through the space between the upper and lower portions of the staplers When stapling the clincher portion moves downward to perform the stapling operation 50 503 7 gt Clincher unit Stapling unit p 9 4511T2C508AA amp S g Q 5 6 Theory of operation ver 1 0 Aug 2006 5 Operations 5 4 Layable guide The movable guide is used to guide the leading edge of the first sheet of paper when the first sheet of paper is stored thereby preventing the leading edge from contacting the stapling unit and curving SD 503 5 4 1 Layable guide mechanism The l
169. ith the Front or Rear Aligning Plate Home Position Sensor With reference to this home position the amount of movement of the Aligning Plate is determined Rear Aligning Plate Rear Aligning Plate Home Position Sensor PI5 FN Shield Plate Front Aligning Motor M4 FN Rear Aligning Motor 5 5 amp Front Aligning Plate 5 2 E Shield Plate 8 Front Side Front Aligning Plate Home Position Sensor 14 4583M615AA 5 2 3 Offsetting operation Whenever the paper is stacked it is moved toward the front or rear side by the Front or Rear Aligning Plate Accordingly the offsetting operation is made whenever the paper is fed onto the Finishing Tray Offset to Front Side Offset to Rear Side Rear Aligning Plate pes 4583M616AA 4583M617AA Offset Paper 181 Paper Exit Tray Front Aligning Plate 12 Theory of Operation 1 0 Jul 2005 5 Operation 5 2 4 Exiting operation The Paddle driven by the Paddle Motor makes the Swing Guide move down and then the paper is taken up with the Upper and Lower Exit Arm Next the Exit Motor rotates in the forward direction to transport the paper taken up with the Exit Rollers toward the Exit Section by the Exit Rollers and the Exit Arm The Exit Belt Home Position Sensor turns OFF and then the Swing Guide moves up
170. ithin represents the number of times the revision has been made To indicate clearly a section revised show A in the lower outside section of the correspond ing page A number within 4 represents the number of times the revision has been made NOTE Revision marks shown in a page are restricted only to the latest ones with the old ones deleted When page revised in Ver 2 0 has been changed in Ver 3 0 The revision marks for Ver 3 0 only are shown with those for Ver 2 0 deleted When a page revised in Ver 2 0 has not been changed in Ver 3 0 The revision marks for Ver 2 0 are left as they are 2005 07 1 0 Issue of the first edition Date Service manual Ver Revision mark Descriptions of revision Theory of Operation 1 0 Jul 2005 CONTENTS DF 601 Outline 1 Product specifications 2 Mixed originalTeed oir ire esatto tir Epiro 2 1 Mixed original 22 Paper feed prohibited originals 2 3 Paper feed not guaranteed originals sse Composition Operation 3 Overall composition 4 SySIeITI 5 Paper LIT ET ERO a i OE Eripe 6 Mechanical operations siisii hte uenire hoi 6 1 Document pick up mechanism essere 6 2 Document take up transport mechanism
171. ize error on the panel When the paper width is correct but the length is not It will start feeding paper When the back edge is detected it will stop printing and display paper jam size error will be displayed after the paper jam is cleared bizhub 250 252 Paper side plate Paper side plate 5 g Q 5 4038T2C115AA Paper side plate Rack 4038T2C184AA Paper width detection resistor UN1 86 Theory of operation ver 3 0 Aug 2006 17 Bypass section bizhub C250 17 2 4 Bypass paper lifting motion control It turns the bypass pick up solenoid SL2 ON when the bypass paper feed is started The lifting cam will rotate to move the paper lifting plate up to the feeding position When the printing is finished the bypass pick up solenoid SL2 will be ON again The paper lifting cam will then rotate to move the paper lifting plate down to the waiting posi tion The paper lifting plate will stay at the feeding position while the job is being executed It will move down to the waiting position when the job is finished and no following printing is demanded When the paper jam occurs the paper lifting plate will move down to the waiting position The position of the paper lifting plate is detected by the detection plate which is mounted coaxially with the paper l
172. l be ON again The paper lifting cam will then rotate to move the paper lifting plate down to the waiting posi tion The paper lifting plate will stay at the feeding position while the job is being executed It will move down to the waiting position when the job is finished and no following printing is demanded When the paper jam occurs the paper lifting plate will move down to the waiting position The position of the paper lifting plate is detected by the detection plate which is mounted coaxially with the paper lifting plate and also by the lift up position sensor Bypass paper feed clutch CL5 Bypass paper Bypass paper feed clutch CL5 take up roller Lift up position sensor PC14 4038T2C183AA Bypass paper pick up Byp ss paper pick up 9J06T2C017DA solenoid SL2 solenoid SL2 Lift up position sensor PC14 Start key ON Move to standby position Main motor M1 Bypass paper pick up solenoid SL2 Lift up position sensor PC14 Bypass paper feed clutch CL5 4038T2C142AA 91 bizhub C250 C252 2 7 Q 9 9 18 Bypass section bizhub C252 Theory of operation ver 3 0 Aug 2006 18 3 4 Paper size detection N The size of the paper loaded in the bypass section is detected by the combination of ON g or OFF positions of the three multi FD size sensors
173. loping bias K AC Developing bias Y M C DC Developing bias Y M C AC 1st image transfer pressure retraction clutch CL3 2nd image transfer pressure retraction motor M5 4038 2 2 12 3 2 1 Developer flow Toner supplied from the rear end of the developing unit is fed to the lower screw It is then fed to the front of the unit while being mixed with developer and electrically charged by the supply agitating conveying screws The TCR sensor installed on the underside of the developing unit detects toner to carrier ratio during this time The developer fed to the front of the developing unit is conveyed further to the upper screw The developer is conveyed onto the developing roller The doctor blade then con trols the height of the developer brush to ensure that the developer on the develop ing roller levels out The toner sticks to the electrostatic latent image on the surface of the PC drum The developer that is left on the sleeve is returned to the lower screw by the mag netic pole positioning of the developing roller It is then conveyed to the rear side of the imaging unit So SES Toner supplied 9 from hopper For IU Y PC drum Y Doctor blade Developing roller Supply agitating conveying screws 42 Theory of operation ver 3 0 Aug 2006 12 Developing section 12 3 3 Developing bias
174. ltiple copies of monochrome original when paper feed speed is 111 mm s Monochrome printing after Switched to monochrome mode i e S e i Paper length Monochrome printing in color mode 216 mm or under 4 sheets or less 5 sheets or more over 216 mm up to 297 mm 2 sheets or less 3 sheets or more over 297 mm up to 381 mm 2 sheets or less 3 sheets or more over 382 mm up to 432 mm 1 sheets or less 2 sheets or more over 433 mm Switched to monochrome mode 1 sheets or more Number of multiple copies of monochrome original when paper feed speed is 55 5 mm s Paper length Monochrome printing in color mode Monochrome printing after switched to monochrome mode 216 mm or under 4 sheets or less 5 sheets or more over 216 mm up to 297 mm 2 sheets or less 3 sheets or more over 297 mm up to 381 mm 1 sheets or less 2 sheets or more over 382 mm up to 432 mm 1 sheets or less 2 sheets or more over 433 mm Switched to monochrome mode 1 sheets or more ACS control operates only after the number of multi copies for monochrome original is counted The pressure retraction control for ACS mode will not be properly executed with only one sheet of print job since on the first copy the control can be performed only for where the original is read and c
175. ly the plain paper weighing 64 to 90 g m or thick paper weighing 91 to 256 g m are reliably fed 2 4 Maintenance Machine durability 600 000 prints or 5 years whichever is earlier No of pages printed per Color print 1 200 prints month average Monochrome print 4 800 prints Color print 3 pages job Standard copy mode Monochrome print pages job Standard original Color print C M Y K 5 density Monochrome print 5 Theory of operation ver 3 0 Aug 2006 2 Product specifications 2 5 Machine specifications 653 2 W x 755 D x 771 3 H mm Power requirements voltage AC 110 V 120 V 127 V 220 240 V B frequency 50 60 Hz 3 0 Hz Max power consumption Less than 1 500 W 120 V 12 A 220 240 V 8 A 2 bizhub C250 25 7 2 W x 29 8 D x 30 4 H inch Dimensions 650 2 W x 755 D x 771 3 H bizhub C252 25 6 2 W x 29 8 D x 30 4 H inch 1 857 W 1 102 0 4 bizhub C250 W x 43 4 D inch 4 A Space requirements W x 1 149 D x bizhub C252 68 6 45 2 0 inch 5 bizhub C250 Approx 94 kg 207 2 Ib without IU and TC A Weight bizhub C252 Approx 95 kg 209 4 Ib without IU and TC IU and TC 8 9 kg 2 Width when the bypass tray is closed 8 Height up to where the original is placed 4 Space requirements are the values when the finisher is slid to the
176. ly to the latest ones with the old ones deleted When page revised in Ver 2 0 has been changed in Ver 3 0 The revision marks for Ver 3 0 only are shown with those for Ver 2 0 deleted When a page revised in Ver 2 0 has not been changed in Ver 3 0 The revision marks for Ver 2 0 are left as they are 2005 07 1 0 Issue of the first edition Date Service manual Ver Revision mark Descriptions of revision Theory of Operation Ver 1 0 Jul 2005 CONTENTS t PC 103 PC 203 e 5 Outline F 1 Product specifications 2 Paper Feed pathi Composition Operation 3 3 4 Drive SYSIOM 4 5 5 51 gt Paper Feed Section A 5 1 1 Vertical transport drive 5 2 5 1 2 Paper lifting sisisi 6 8 5 2 Cassete SECOM 7 6 5 2 1 Paper Size 7 H 5 2 2 Paper level indicator 8 8 Theory of Operation Ver 1 0 Jul 2005 PC 103 PC 203 8 E Q Q Blank Page ij Theory of Operation Ver 1 0 Jul 2005 1 Product specifications Outline amp 1 Product sp
177. m LE e m x E m 1 Product specifications Theory of operation ver 1 0 Aug 2006 1 2 510 A Type Name Punch kit PK 510 Installation Built into the finisher Metric B5S A4 B4 A3 Inch 2 holes 8 115 8 5 x 11 8 x 14 11 x 17 Paper size Inch holes 8 x 11 11 x 17 Sweden 5 A4 B4 Paper type Plain Paper Recycled paper 50 to 209 g m 13 25 to 55 5 Ib Punch hole Metric 4 hole Inch 2 3 hole Sweden 4 holes Metric 4 holes For 1 500 sheets of paper 80 g m Number of stored punch wastes 2 3 holes For 1 000 sheets of paper 75 g m Sweden 4 holes For 1 500 sheets of paper 80 g m Document alignment Center B Machine specifications Power requirements Supplied by the finisher Dimensions 114 mm W x 461 mm D x 106 mm H 4 5 inch W x 18 25 inch D x 4 25 inch H Weight Approx 1 9 kg 4 25 Ib or less C Operating environment Conforms to the operating environment of the main unit Theory of operation ver 1 0 Aug 2006 1 Product specifications 1 3 OT 601 A Type Name Output tray OT 601 Installation Fixed to the finisher Mode Sort group and sort stable Sort group sort offset group offset and sort stable Number of bins 1 bin Document alignment Center B Paper type
178. maged sheet Sheets of 211 g m 56 1 4 Ib or more Take up failure Sheets of 110 g m 29 1 4 Ib or more in 2 Sided Mode Take up failure Sheets folded torn or wrinkled Take up failure damaged sheet Sheets severely curled Sheets misfed due to being dog eared or fed in askew OHP Film Transparency Film Take up failure Label Paper Take up failure Offset Master Paper Take up failure Sheets clipped or notched Damaged sheet Sheets patched Patched part folded or torn sheet 2 3 Paper feed not guaranteed originals If fed paper feed will be possible to some extent but trouble occurrence will be possible Type of Original Possible Trouble Sheets lightly curled Curled amount 10 15 mm Dog eared exit failure Heat Sensitive Paper Edge folded exit failure transport failure Ink jet Paper Take up failure transport failure Sheets with smooth surface Coated Paper Take up failure transport failure Intermediate paper Take up failure transport failure Paper immediately after paper exit from the main body Take up failure transport failure to vertical feeding Paper with many punched holes e g loose leaf limited Multi page feed due to flashes from holes Sheets with 2 to 4 holes Transport failure Sheets two folded or z folded A3 or 11 x 17 Transport failure image deformation
179. ment control I 8 5 o s fe 6 e It adjusts the variation in reproducibility of the thin line and the reverse outline which is resulting from the variations in electrostatic characteristics of the PC drum developing characteristics and transfer characteristics in terms of individual difference environment and durability to make it the target level t produces detection patterns on the surface of the transfer belt with the given level of LD intensity and detects the output value of IDC sensor LD intensity is calculated from the detected IDC sensor data 22 2 4 Gamma correction control The intensity of LD in all gradation levels is adjusted to correct changes in gradation characteristics to a linear one The changes in gradation characteristics are caused by variations in the PC drum sensitivity and developing characteristics and changes with time and in environment t produces gradation patterns on the transfer belt and calculates gradation characteris tics output by the current engine with the IDC registration sensor The gamma correction data is calculated using the density measurements of different gradation levels The optimum LED intensity is set for each of the different gradation lev els 116 Theory of operation ver 3 0 Aug 2006 22 Image stabilization control 22 3 Operation timing Mode Operation timing A new IU is detected a new transfer
180. ment screen change when the settings are changed for display PM parts lifetime and unit change available from the tech rep mode and IU life stop setting available from the security mode I 8 Q Q fe 34 Theory of operation ver 3 0 Aug 2006 10 Photo conductor section 10 Photo conductor section 10 1 Composition 2 N a 2 N Charge generating layer CGL Charge transport layer CTL Aluminum X 4036ma2338c0 4038T2C013AA PC drum 10 2 Drive Main motor M1 15 Q 9 9 PC drum K PC drum C Color PC drum motor M2 PC drum Y PC drum M 35 10 Photo conductor section Theory of operation ver 3 0 Aug 2006 10 3 Operation 10 3 1 PC drum drive mechanism Two independent PC drum motors for color and monochrome are used for the drive mechanism to suppress incorrect color registration and uneven pitch The color PC drum motor drives the PC drums Y M and C while the main motor drives the PC drum K Drive is transmitted to each of the PC drums when the triangular prism shaped shaft is engaged with the mating coupling part bizhub C250 C252 Main motor M1 Color PC drum motor M2 5 2 a i 5 a Coupling
181. mit sensor has been activated the elevator tray is subjected to an ascent motion 3 When the elevator tray home position sensor is activated a first time after the ascent motion of the elevator tray has been started it is determined that the eleva tor tray is now located at the exit port for the 1st exit tray Elevator tray home position sensor PC11 4349T2C514AA 17 FS 514 PK 510 OT 601 I 8 5 o s 6 5 Operations Theory of operation ver 1 0 Aug 2006 4 When the elevator tray home position sensor is activated a second time after the ascent motion of the elevator tray has been started it is determined that the eleva tor tray is now located at the exit port for the 2nd exit tray 5 Drive is stopped when the elevator top face detection sensor is activated with the home position sensor of the target tray in the activated position If an additional OT 601 tray is installed the additional tray is at the exit port when the position sensor is activated twice and the 2nd tray is at the exit port when the home posi tion sensor is activated three times B Paper full detection 18 When the elevator tray home position sensor changes from the activated to deactivated state with the elevator top face detection sensor in the activated state a paper full condi tion is detected and the corresponding message will appear on the control panel The s
182. n DF 601 Pick Up Rollers go down and rotated via timing belt amp gears At the same time Document Stoppers go up An original is taken up and transported v A loop is formed to correct the skew feeding after Registration Sensor is activated Take Up Motor OFF Registration Clutch OFF release of Registration Roller Take Up Motor Backward Rotation The original is transported Pick Up Sensor ON v Start of the original size detection in the feeding direction Take Up Motor OFF B Document transport operation flow I 8 fe Transport Motor Forward Rotation Take Up Motor Backward Rotation The original is transported onto the Original Glass The original size is determined when Registration Sensor OFF Take Up Motor OFF when Pick Up Sensor OFF Transport Motor OFF when the original is reached to its reference position Registration Clutch ON 10 Theory of Operation 1 0 Jul 2005 6 Mechanical operations 6 3 Document exit mechanism 6 3 1 Single sided document mode The original transported by the Transport Belt is sent to the switchback section and then ejected onto the Exit Tray with its face down in order to keep the original pages in proper order Exit Motor M3 DF Exit Solenoid SL2 DF Turnover Solenoid SL1 DF 6 3 2 Double sided document mode n
183. n the Shift Tray Motor is energized to move the Shifter so that the paper stack on the Sub Tray is moved onto the Main Tray The Shifter continues moving and stops when the Shift Tray Stop Sensor is activated When the Drawer Release button is thereafter pressed the Shifter starts moving and stops as soon as the Shift Tray Home Sensor is activated Shift Tray Home Sensor PC12 LCT Shift Tray Stop Sensor PC11 LCT Shifter 4348M622AA 4348M614AA Shift Tray Motor M4 LCT Shift Tray Motor M4 LCT PC 403 2 Q 9 9 5 Operations Theory of Operation Ver 1 0 Jul 2005 5 2 4 Paper empty detection Paper empty detection of Main Tray is performed by Main Tray Empty Sensor Board Paper empty detection of Sub Tray is performed by Shift Tray Empty Sensor PC 403 Sub Tray Main Tray 4348M623AA Shift Tray Empty Sensor PC9 LCT Main Tray Empty Sensor Board PWB E LCT I 8 fe SS SS KONICA MINOLTA SERVICE MANUAL THEORY OF OPERATION AD 503 2006 02 KONICA MINOLTA BUSINESS TECHNOLOGIES INC Ver 2 0 Revision history After publication of this service manual the parts and mechanism may be subject to change for improvement of their performance Therefore the descriptions given in this service manual may not coincide with the actual ma
184. n ce sence cess 35 35 10 3 Operaltion enne 36 10 3 1 drum drive mechanism sese 36 10 3 2 PC drum phase control inn crece A eeepc eeu ta 36 10 3 3 PC drum small amount rotation control 37 11 Charge corona section eene nennen nenne 38 11 12 39 11 1 1 PC drum charge corona ON OFF control 39 11 1 2 Cleaning main erase mechanism 39 12 40 12 1 Composition 40 12 2 M 41 12 3 OperatiOn m 42 12 3 1 Developing drive control 42 12 3 2 Developer TOW 42 12 3 3 Developing bias 43 12 34 high grade micro toning 43 1235 TCR Sensor Control nien e dite anne 44 13 Toner supply 45 13 1 Composition 13 2 13 3 18 8 4 Toner replenishing mechanism control 47 13 3 2 Toner cartridge life 48 13 33 Shutter mechanism
185. n sensor PC14 Bypass paper feed 2 clutch CL5 e Lift up position sensor PC14 Paper lifting cam Bypass paper take up roller aS ee NARS SD U 1 22 WE Sd Bypass paper pick up solenoid SL2 4039T2C116AA 89 w m o 5 6 18 Bypass section bizhub C252 Theory of operation ver 3 0 Aug 2006 18 3 Operation 18 3 1 Bypass paper take up control Start key ON Move to standby position bizhub 250 252 Main motor M1 Bypass paper pick up solenoid SL2 Lift up position sensor PC14 Bypass paper feed clutch CL5 4038T2C142AA 18 3 2 Paper empty detection The paper empty sensor detects a paper empty condition in the bypass section Paper empty sensor PC13 5 Q 5 9J06T2C014DA When there is no paper z When the paper is fully supplied 9J06T2C015DA 90 Theory of operation ver 3 0 Aug 2006 18 Bypass section bizhub C252 18 3 3 Bypass paper lifting motion control It turns the bypass paper pick up solenoid ON when the bypass paper feed is started The lifting cam will rotate to move the paper lifting plate up to the feeding position When the printing is finished the bypass paper pick up solenoid wil
186. n the leading and trailing edges and 3 mm 0 118 inch on both the side edges of the paper are however the void image area HSYNC 1 7 mm 0 118 inch Void width 3 mm 0 118 inch 4 2mm 0 165 inch 4 2mm 0 165 inch TOD Void width 4 2 mm 0 165 inch 4 i 8 Void width 4 2 mm 0 165 inch 4138102595 0 28 Theory of operation ver 3 0 Aug 2006 8 Write section PH section 8 2 6 Registration control color shift correction system In a tandem engine in which an independent image reproduction process is provided for each of the four different colors of toner Incorrect color registration or color shift is therefore more likely to occur due to each of the PH assemblies being out of correct posi tion The color shift correction system automatically detects any misalignment among the different colors correcting it both in the main scanning and sub scanning directions The color shift detection sequence proceeds as follows A detection pattern each in the main scanning direction is produced at the front and rear on the transfer belt Each of IDC registration sensor 1 and 2 at the front and rear reads the corresponding pattern The amount of color shift in the sub scanning direction is then calculated and stored in memory A detection pattern each in the sub scanning direction is next pro
187. nd Group Staple C Paper type No of Sheets to Mode Size Type Weight Tray Capacity Exit Tray be Stapled Plain paper 250 sheets Thick paper OHP Film A6S to Wide Translucent 5 1 2 x 8 1 25 60 to 256 g m paper 9 st Group Sort 5 4 2 x 8 1 2 to 16 to 68 Ib 20sheets Y 12 1 4 x 18 Postcard Envelope Label paper Letterhead Plain paper 1 000 sheets B5S B5 to 45 Offset Group Na viag 60 to 209 g m 8 1 2 xi 15 Elevator Offset Sort 7 1 4 x 10 1 2S 16 to 55 1 2 Ib or smaller Tray 7 1 4 x 10 1 2 to Thick paper 500 sheets 12 1 4 x 18 B4 8 1 2 x 14 or larger 60 to 90 g m 1 000 sheets 16 to 24 Ib 45 dead 81 2x 115 Group Staple 7 1 4 10 1 2 to Plain paper Cover Mode or smaller T 60 to 80 g m eae 91 to 209 gm 500 sheets Y 16 to 21 174 lb 24 1 4 to B4 8 1 2 x 14 55 1 2 Ib or larger 20 sheets if originals of high ID Color Wise 3 is used 15 sheets when using Color Copy 90 paper 20 sheets when using Hammermill Laser Print90 paper 1 Product specification Theory of Operation Ver 1 0 Jul 2005 D Stapling Staple Filling Mode Dedicated Staple Cartridge Mode 3000 staples Staple Detection Available Nearly Empty 40 remaining staples Diagonal back side 45 C 1 point Rear Parallel 1 point Stapling Position
188. nder Radiation Performance Stan dard according to the Food Drug and Cosmetic Act of 1990 Compliance is mandatory for Laser products marketed in the United States and is reported to the Center for Devices and Radiological Health CDRH of the U S Food and Drug Administration of the U S Department of Health and Human Services DHHS This means that the device does not produce hazardous laser radiation The label shown on page S 16 indicates compliance with the CDRH regulations and must be attached to laser products marketed in the United States CAUTION Use of controls adjustments or performance of procedures other than those specified in this manual may result in hazardous radiation exposure semiconductor laser Maximum power of the laser diode 10 mw Wavelength 775 800 nm Areas CAUTION Use of controls adjustments or performance of procedures other than those specified in this manual may result in hazardous radiation exposure semiconductor laser Maximum power of the laser diode 10 mw Wavelength 775 800 nm Denmark ADVARSEL Usynlig laserstraling ved bning nar sikkerhedsafbrydere er af funktion Undga udseettelse for str ling Klasse 1 laser produkt der opfylder IEC60825 1 sikkerheds kravene halvlederlaser Laserdiodens hojeste styrke 10 mw b lgel ngden 775 800 nm S 14 SAFETY AND IMPORTANT WARNING ITEMS Finland Sweden LUOKAN 1 LASERLAITE KLAS
189. nfirmation of the original size as read by the original size detection sensors DF 601 6 5 2 Raised lowered position detection The Raised Lowered Position Detection Mechanism uses a magnet installed in the RADF body to allow the main body to know that the RADF is raised or lowered This magnet actuates the Size Reset Switch on the main body to perform this operation Magnet I 2 w m E 5 5 Original Cover Detecting Lever 14 KONICA MINOLTA SERVICE MANUAL THEORY OF OPERATION PC 103 PC 203 2005 07 KONICA MINOLTA BUSINESS TECHNOLOGIES INC Ver 1 0 Revision history After publication of this service manual the parts and mechanism may be subject to change for improvement of their performance Therefore the descriptions given in this service manual may not coincide with the actual machine When any change has been made to the descriptions in the service manual a revised version will be issued with a revision mark added as required Revision mark To indicate clearly a section revised show to the left of the revised section A number within represents the number of times the revision has been made To indicate clearly a section revised show A in the lower outside section of the correspond ing page A number within 4 represents the number of times the revision has been made NOTE Revision marks shown in a page are restricted on
190. ng block diagram eee Photoelectric conversion CCD sensor board bizhub C250 C252 2 Analog to digital conversion L F ee ee Image processing board 3 Shading correction 4 Line to line variation correction color aberration correction 1 m 5 Zoom movement processing 6 ACS processing ee zl To the MFP control board The following detail the image processing operations performed by the scanner section 1 Areduction type CCD sensor is used to read the light reflected off the original and convert the optical data to a corresponding electric signal To make data process ing faster data transfer and output are done through two channels one for even numbered pixels and the other for odd numbered pixels 2 The odd and even analog signals output from the CCD sensor chips are synthe sized to form a single string of signal data which is in turn converted to 8 bit digital signals 256 gradation levels 3 Acorrection is made of errors that occur due to variations in sensitivity of each CCD chip and the light distribution varying along the length of the exposure lamp The shading correction is made by holding the peak value i e the maximum value of readings taken of multiple lines to prevent adverse effects on the image due to dust on the shading sheet 4 Memo
191. nit E Consumables Staples 2000 MS 2C x 2 NOTE These specifications are subject to change without notice Theory of Operation Ver 1 0 2006 2 Paper path Paper path 2 J 7 67 omen 4 7 y 4511T2C504AA 0s ds Theory of operation ver 1 0 Aug 2006 3 Composition Composition Operation 3 Composition SD 503 pd Center stapling section Center creasing section 2 Q 9 9 4511T1C600AA 4 Drive Theory of Operation Ver 1 0 Mar 2006 4 Drive 41 Center creasing section 50 503 Crease chopper Crease motor M10 SK Crease roller 2 S Q 5 6 4511T2C001DA 42 Center stapling section Saddle exit open close motor M9 SK lt gt Upper exit roller Cs Saddle exit motor M8 SK 4511T2002DA Theory of operation ver 1 0 Aug 2006 5 Operations 5 Operations 51 Paper transport mechanism Paper is transported by the exit rollers of the finisher and exit rollers of the saddle kit The saddle exit motor provides the drive for the exit rollers of the saddle kit If a center stapling operation is made with a copy set stack tha
192. nnector shipped with the output tray is mounted the machine determines that the output tray has been mounted 5 Q 5 When 501 80 503 is Installed 4349T2C530AA 30 SS KONICA MINOLTA SERVICE MANUAL THEORY OF OPERATION 501 2006 08 KONICA MINOLTA BUSINESS TECHNOLOGIES INC Ver 1 0 Revision history After publication of this service manual the parts and mechanism may be subject to change for improvement of their performance Therefore the descriptions given in this service manual may not coincide with the actual machine When any change has been made to the descriptions in the service manual a revised version will be issued with a revision mark added as required Revision mark To indicate clearly a section revised show to the left of the revised section A number within represents the number of times the revision has been made To indicate clearly a section revised show in lower outside section of correspond ing page A number within represents the number of times the revision has been made NOTE Revision marks shown in a page are restricted only to the latest ones with the old ones deleted When a page revised in Ver 2 0 has been changed in Ver 3 0 The revision marks for Ver 3 0 only are shown with those for Ver 2 0 deleted When a page revised
193. nsists of Theory of Operation section and Field Service section to explain the main machine and its corresponding options Theory of Operation section gives as information for the CE to get a full understanding of the product a rough outline of the object and role of each function the relationship between the electrical system and the mechanical system and the timing of operation of each part Field Service section gives as information required by the CE at the site or at the cus tomer s premise a rough outline of the service schedule and its details maintenance steps the object and role of each adjustment error codes and supplementary information The basic configuration of each section is as follows However some options may not be applied to the following configuration lt Theory of Operation section gt OUTLINE Explanation of system configuration product specifications unit configuration and paper path COMPOSITION OPERATION Explanation of configuration of each unit operating system and control system lt Field Service section gt GENERAL Explanation of system configuration and product specifications MAINTENANCE Explanation of service schedule maintenance steps ser vice tools removal reinstallation methods of major parts and firmware version up method etc ADJUSTMENT SETTING Explanation of utility mode service mode and mechanical adjustment etc TROUBLESHOOTING Explanation of lists of jam codes an
194. nsor PC8 ON OFF vv Period of time 4038T2C180AA the waste Toner is Light shield plate 4038T2C175AA being unblocked per rotation A B C D E the period of time the waste toner full sensor is being unblocked e S i 9 Period of time it rotates for 5 times 4038T2C179AA Unblocked time Level State rotation time Operation Level 1 No toner 40 to less than 55 Level 2 Toner low 34 to less than 40 Displays waste toner near full Level Waste toner near full 30 to less than 34 I a Ready for printing Displays waste toner full Printing not available When detected during the job printing will stop when all paper exit Level 4 Waste toner full 20 to less than 30 Display for the waste toner Display for the waste near full detection toner full detection m Image Finishing 4038T2E205AA 4038T2E206AA A different toner full warning screen is displayed if user is selected for unit change available from the tech rep mode 69 16 Paper feed section Theory of operation ver 3 0 Aug 2006 16 Paper feed section 16 1 Composition 16 1 1 Tray1 N ES ES N Q 4038T2C111AA
195. nual the parts and mechanism may be subject to change for improvement of their performance Therefore the descriptions given in this service manual may not coincide with the actual machine When any change has been made to the descriptions in the service manual a revised version will be issued with a revision mark added as required Revision mark To indicate clearly a section revised show to the left of the revised section A number within represents the number of times the revision has been made To indicate clearly a section revised show in lower outside section of correspond ing page A number within represents the number of times the revision has been made NOTE Revision marks shown in a page are restricted only to the latest ones with the old ones deleted When a page revised in Ver 2 0 has been changed in Ver 3 0 The revision marks for Ver 3 0 only are shown with those for Ver 2 0 deleted When a page revised in Ver 2 0 has not been changed in Ver 3 0 The revision marks for Ver 2 0 are left as they are 2005 07 1 0 Issue of the first edition Date Service manual Ver Revision mark Descriptions of revision Theory of Operation 1 0 Jul 2005 CONTENTS FS 603 Outline 1 Product specification 2 Paper Feed Baci PERDERE 2 1 Output the 1st paper exit 4 2 2 Output the 2nd paper exit
196. number within represents the number of times the revision has been made To indicate clearly a section revised show A in the lower outside section of the correspond ing page A number within 4 represents the number of times the revision has been made NOTE Revision marks shown in a page are restricted only to the latest ones with the old ones deleted When page revised in Ver 2 0 has been changed in Ver 3 0 The revision marks for Ver 3 0 only are shown with those for Ver 2 0 deleted When a page revised in Ver 2 0 has not been changed in Ver 3 0 The revision marks for Ver 2 0 are left as they are 2005 07 1 0 Issue of the first edition Date Service manual Ver Revision mark Descriptions of revision Theory of Operation Ver 1 0 Jul 2005 CONTENTS PC 403 Outline 1 Product specification 2 Paper Feed Pather ranerne naea EAE aiae ERAS Edea EENAA PERERA cgudeshoagaizezsesasabin Composition Operation 3 3 4 DIV 4 5 Op rations AL EMI 5 5 1 Paper Feed Section 5 1 1 Paper Feed drive mechanism 5 2 52 Tray 6 8 5 2 1 Elevator tray iasi 6 6 5 2 2 Shift Gate drive
197. of the changing developing and PC drum characteristics 121 bizhub C250 C252 e S i 9 23 Image processing Theory of operation ver 3 0 Aug 2006 22 Creates the density distribution of a predetermined pattern to enable outstanding gradation reproduction 23 Adjust the processing speed in the board main scanning to conform to the input processing speed 24 The laser is emitted according to the laser intensity information bizhub 250 252 I 8 5 o s 6 122 Theory of operation ver 3 0 Aug 2006 24 Other control 24 Other control 24 1 Fan control 24 1 1 Construction bizhub C250 C252 Scanner cooling fan motor M202 Fusing cooling fan motor 1 M13 Fusing cooling fan motor 2 M11 Cooling fan motor 2 M22 Cooling fan motor 1 M12 Power supply cooling fan motor 2 M9 2 Q 9 9 Ozone ventilation Suction fan motor M10 fan motor M14 4038T2CO32DC Power supply cooling fan motor 1 M8 123 bizhub 250 252 I 8 o e fe 6 24 Other control Theory of operation ver 3 0 Aug 2006 24 1 2 Operation A Function Motor name Control conditions Power supply cooling fan motor 1 M8 It exhausts the accumulated
198. oltage detected by high voltage unit HV1 3 The measured resistance is used as the basis for determining the optimum 1st image transfer voltage for each color of toner C 2nd image transfer ATVC operation 1 Constant current of the 2nd image transfer which is output from the high pressure unit HV1 will be fed back to the mechanical control board PWB M through 2nd image transfer roller transfer belt and the transfer belt drive roller 2 Calculate the resistance value with the mechanical control board PWB M according to the voltage detected by high voltage unit 1 3 The measured resistance together with the type of paper temperature and humid ity and the color or monochrome mode 1st side 2nd side is used as the basis for determining the optimum 2nd image transfer voltage 59 14 Transfer corona section Theory of operation ver 3 0 Aug 2006 D 1st and 2nd image transfer ATVC operation timing The 1st and 2nd image transfer ATVC operations are carried out immediately before the execution of image stabilization control The control operation is performed when the threshold value of the change in interior temperature is exceeded bizhub C250 C252 14 3 6 Transfer belt cleaning The cleaning blade is mounted on the transfer belt in order to remove the remaining toner at the transfer belt The cleaning blade is always pressed to the transfer belt by the fixed blade system Pi Transfer belt Toner collec
199. on and sign of leakage Current can leak leading to a risk of trouble or fire Before disassembling or adjusting the write unit P H unit incorporating a laser make sure that the power cord has been disconnected The laser light can enter your eye leading to a risk of loss of eyesight Do not remove the cover of the write unit Do not supply power with the write unit shifted from the specified mount ing position The laser light can enter your eye leading to a risk of loss of eyesight When replacing a lithium battery replace it with a new lith ium battery specified in the Parts Guide Manual Dispose of the used lithium battery using the method specified by local authority Improper replacement can cause explosion After replacing a part to which AC voltage is applied e g optical lamp and fixing lamp be sure to check the installa tion state A risk of fire exists Check the interlock switch and actuator for loosening and check whether the interlock functions properly If the interlock does not function you may receive an electric shock or be injured when you insert your hand in the product e g for clearing paper jam Make sure the wiring cannot come into contact with sharp edges burrs or other pointed parts Current can leak leading to a risk of electric shock or fire o SAFETY AND IMPORTANT WARNING ITEMS Safety Checkpoints WARNING Mak
200. ontrol The machine provides the following image stabilization control to ensure stabilized copy image Purpose Control Control means To stabilize image density To stabilize gradation IDC intensity control Max density control LD intensity adjustment control Registration control color shift correction Gamma correction control IDC registration sensor temperature humidity sensor To stabilize toner density TCR control Y M C K TCR sensor To stabilize image transfer Image transfer output control 1st image transfer ATVC 2nd image transfer ATVC Temperature humidity sensor An explanation is given of the control for each section 1st Image Transfer Roller To be set on control panel D MAX Density Background Voltage Margin ATDC Toner Supply 2nd Image Transfer Roller Q mo Toner Supply Motor E lt TCR Sensor Developing Bias Grid Voltage Vg Toner Repleni shing Control 1 1 Image Density Gradation Control ene IDC Sensor Gamma Correction Data Gradation Correction Table d Y Transfer ATVC Control OUT IN Temperature Humidity Sensor
201. or M2P PK 8 Punch Slide Unit Photo Sensor Board PWB C PK E LED Board PWB D Trailing Edge Detection Sensor ol Paper Exit Paper Side Registration Sensor 3 Side Registration Sensor 2 Side Registration Sensor 4 Side Registration Sensor 1 Trailing Edge Detection Sensor Photo Sensor Board LED Board PK 501 PK 4 PK 131 e g i 9 PK 501 PK 4 PK 131 I 8 e 3 Mechanical operations Operation 2 Theory of Operation Ver 1 0 Jul 2005 Side Registration Sensor detects paper edge at rear side Side Registration Motor moves Punch Slide Unit at the specified position Punch Slide Unit stops Rear side Side Registration Sensor 1 Side Registration Sensor 2 Side Registration Sensor 3 MM m Side Registration Sensor 4 Leading edge Trailing edge Name Function Side Registration Sensor 1 Detects paper edge A4 8 5x11 11x17 Side Registration Sensor 2 Detects paper edge B4 B5 Side Registration Sensor 3 Detects paper edge A4S 8 5 11 11x14 Side Registration Sensor 4 Detects paper edge B5S Theory of Operation 1 0 Jul 2005 3 Mechanical operations C Operation 3 Paper Trailing Edge Sensor detects paper tra
202. orona section 14 2 2 2nd image transfer section 2nd image transfer roller 2nd image transfer pressure Shutter position sensor PC7 bizhub C250 C252 Pressure lever IDC registration sensor 2 SE2 2nd image transfer pressure retraction motor M5 IDC registration sensor 1 SE1 Shutter 4038T2C019DA 2 Q 9 9 53 14 Transfer corona section Theory of operation ver 3 0 Aug 2006 14 3 Operation 14 3 1 Transfer belt drive mechanism The transfer belt is driven by the main motor M1 Revolving speed of the main motor M1 can be switched by the motor clock bizhub C250 C252 14 3 2 1st image transfer roller mechanism Pressure retraction mechanism is equipped for pressing the 1st image transfer rollers Y M C to inside the transfer belt at the 1st image transfer The 1st image transfer roller K does not have pressure retraction mechanism The 1st image transfer roller K always presses the transfer belt to the PC drum K Driving force is transferred from the fusing motor M4 to the pressure retraction mecha nism through the 1st image transfer pressure retraction clutch CL3 The 1st image transfer retraction position sensor PC6 detects the 1st image transfer roller at its retracted position A Pressure retraction operation Pressure operation 1 Rotation of the fusing drive motor M4 is transfer
203. ort to the Elevator Tray takes place when the Finisher is in the Group Sort Offset Group or Offset Sort mode As the motor is energized the Exit Roller turns to transport the paper into the Elevator Tray Either the upper paper path or lower paper path is used to transport paper onto the Elevator Tray The upper paper path is selected when the Upper Lower Entrance Switching Solenoid is energized while the 15t Tray Entrance Switching Solenoid is deenergized The lower paper path is selected when the Upper Lower Entrance Switching Solenoid is deenergized FS 501 Exit Motor M3 FN Finisher Tray Exit Roller Composition Operation Upper Lower Entrance Switching Solenoid SL1 FN 11 FS 501 I 8 e 5 Mechanical operations 5 1 2 Theory of Operation Ver 1 0 Jul 2005 Paper switchback mechanism When the last paper of the first print set is transported onto the Finisher Tray during a multi print cycle in the Sort Staple mode the first paper of the subsequent print set which is to be next transported undergoes a switchback sequence The paper for the switchback is transported via the lower paper path The second paper of the second print set is placed over the paper which has undergone the switchback sequence After the first print set has been fed into the Elevator Tray the first and second sheets of paper of the second print set
204. ounted The ACS control performs effectively for the print jobs as listed below For the 2nd set of prints onward in electronic sorting Printing using job programs 63 bizhub 250 252 2 S g Q 5 6 14 Transfer corona section Theory of operation ver 3 0 Aug 2006 When printing in monochrome with color mode effecting monochrome printing with the four PC drums rotating First sheet of color mode First sheet of monochrome mode First sheet of color mode 9 4038T2C165AA Switching to monochrome mode First sheet of color mode gt First sheet of gt Second sheet of monochrome mode monochrome mode Third sheet of E Fourth sheet of E Fifth sheet of monochrome mode monochrome mode monochrome mode Sa pum pul 4038T2C166AA 64 Theory of operation ver 3 0 Aug 2006 15 Toner collecting section 15 1 Composition 15 Toner collecting section 4038T2C124AA Transfer belt toner collecting screw Waste toner box Waste toner full sensor PC8 Waste toner conveyance screw 4038T2C110AA IU toner collecting screw 4038T2C023DA Waste toner box 4038T2C024DA 65 bizhub C250 C252 2 7 Q 9 3m 9 15 Toner collecting section Theory of oper
205. p jam pen M22 All drive systems are OFF due to the cause except paper jam trouble or door being open Half speed Full speed At initial operation image stabilization function or printing Scanner cooling fan Full speed Turns at full speed while the exposure lamp FL201 remains ON 1 Main motor M1 is ON and not printing or warming up 72 Rotates at half speed until the exit sensor turns ON during printing Half speed control When switching from stop to half speed control the fan will rotate at full speed and then will rotate at half speed 126 Theory of operation ver 3 0 Aug 2006 24 Other control 24 2 Parts operated when the power switch and sub power switch are turned ON 24 2 1 Parts operated when the power switch and sub power switch are turned ON When the sub power switch is turned ON the MFP control board detects it and sends a control signal to the DC power supply trough the mechanical control board The DC power supply then supplies 5V DC 12V DC 15V DC and 24V DC to all PWBs and options It also turns ON the relays in the PWBs preparing AC power ready to be supplied to each heater lamp bizhub C250 C252 e S i 9 4038T2C035DA A NOTE Toturn OFF the power switch turn OFF the sub power switch Check that the start key turns from green to orange and then goes out check that
206. paper holding position of the paper holding paddle FS 514 PK 510 OT 601 Exit paddle home position sensor PC6 2 S g Q 5 9J08T1C102AA Paper holding paddle Exit paddle solenoid SL2 9JO8T2CO11DB 22 Theory of operation ver 1 0 Aug 2006 5 Operations A Upper exit roller up down motion mechanism The exit roller motor moves the upper exit roller away from the lower exit roller or presses the upper exit roller up against the lower exit roller When one copy set stack is stored in the storage tray the upper exit roller is moved downward to be pressed up against the lower exit roller and the two rollers feed the copy set stack out onto the exit tray The exit roller home position sensor detects the position of the upper exit roller whether it is in the raised or lowered position FS 514 PK 510 OT 601 1 2 Y Exit roller motor M10 Exit roller home position sensor 5 9J08T1C103AA A Blocked Pressed Unblocked Separated 2 7 Q 9 3m 9 9J08T1C104AA 9J08T1C105AA 23 5 Operations Theory of operation ver 1 0 Aug 2006 5 4 Staple section 5 4 1 Stapling mechanism Stapling is performed by the stapling unit When the stapling motor is rotated the clinch arm lowers The stapler thereafter goes up to drive
207. ped Color mode The pressure position of the image transfer roller is where the PC drum is in contact with the transfer belt for all four colors of toner in order to transfer the original without missing any part a retraction roller is mounted at the 1st image transfer roller Y so the 1st image transfer roller Y will properly contact to the PC drum Y Monochrome mode The pressure position of the image transfer roller Y M C is where the PC drum Y M C leaves the transfer belt While that of the image transfer roller K is where the PC drum K is in contact with the transfer belt This allows the PC drum Y M C to remain stationary in this mode Transfer belt 1st image transfer roller Monochrome mode 4038T2C162AA PC drum Retraction roller Color mode 4038T2C163AA 56 Theory of operation ver 3 0 Aug 2006 14 Transfer corona section 14 3 3 2nd image transfer roller pressure mechanism The 2nd image transfer roller has the pressure retraction mechanism which presses to and retracts from the transfer belt so the patterns made on the transfer belt except by printing such as detection pattern during image stabilization will not affect the 2nd image transfer roller bizhub C250 C252 A Pressure retraction operation 1 Drive from the 2nd image transfer pressure retraction motor is transmitted through a gear train to the drive gear 2 The drive gear rotates to rotate the cam half way
208. per stack the more the red portion is visible Paper supply level indicator in cassette front cover Lever 73 bizhub C250 C252 7 Q 9 9 bizhub 250 252 amp S g Q E 5 6 16 Paper feed section 16 3 3 Theory of operation ver 3 0 Aug 2006 Paper near empty paper empty detection When the paper near empty sensor is blocked a corresponding warning display is given on the control panel The paper supply level when a paper near empty condition is detected is about 50 30 sheets The paper empty sensor detects a paper empty condition Tray1 A near empty condition An empty condition Tray1 paper near empty sensor PC11 Tray1 paper empty sensor PC10 Tray2 A near empty condition An empty condition Tray2 paper near empty sensor Tray2 paper empty sensor PC1 PC PC6 PC Tray2 lift up motor 74 Theory of operation ver 3 0 Aug 2006 16 3 4 Paper type setting 16 Paper feed section N rel The paper type is set from the control panel Control is provided on the main body side differently as detailed below depending on the paper type setting made 8 System speed 2 mm s Heating 1st 2nd Grid Developing R roller set Image Image bias Gamma a Paper type Monochrome voltage mde tempe
209. ples are in the Staple Cartridge A Self Priming Sensor detects if the staples are positioned at the end of the Staple Car tridge This Finisher is equipped with the safety protection mechanism The Staple Folding Motor will not be turned ON without an ON condition with Swing Guide closed of the Front and Rear Staple Safety Switches Home position Stapling position A 4583M621AA Cam 19 FS 603 Composition Operation 5 Operation Theory of Operation Ver 1 0 Jul 2005 5 3 5 Staple unit moving control The Staple Unit is moved with the Slide Motor and its home position is detected with the Slide Home Position Sensor Regardless of the staple mode or paper size the staple unit always returns to the stand by position on the rear side FS 603 lt For the Corner stapling Front Position gt The Staple Unit stands by on the rear side and then move to the staple position corre sponding to the paper size at each stapling operation lt When the Corner stapling Rear Position is used gt The Staple Unit is at the home position on the rear side The staple position is the same as standby home position The staple position of 2 point stapling at the rear side is used only for B5S Corner Stapling Front Corner Stapling Rear Staple Unit Staple Unit nm Point Standby Point Stapling Point Entrance o gt _ 1 mu Entrance NE L Stopper Mm Stopper
210. position when leaving the unit in normal mode for a long period of time When the surface of the roller deforms uneven gloss or other image troubles may occur when printing images of high density high ID such as photographs 105 20 Fusing section Theory of operation ver 3 0 Aug 2006 B Paper jam countermeasure position By switching the release lever to the position fusing pressure roller will retract from the heating roller as shown below Paper jam release mechanism is equipped for removing the stuck paper Paper jam release position no pressure bizhub 250 252 Normal position normal pressure Release lever 4038T2C199AA 4038T2C201AA 2 S g Q 5 6 Close the fusing cover when switching the position from paper jam release to the normal Closing the fusing cover will return the release lever to the normal position L 3 Fusing cover SS O Release lever 7 a mz SS 12 S g 4038T2C202AA NOTE The release lever must be closed by closing the fusing cover I
211. pper sensor PC 7PC The tray 2 lift up motor will rotate again to lift up the Paper lifting Plate When the tray 2 lift up upper sensor PC 7 is blocked ON the trays 2 lift up motor will stop to stop lifting the paper lifting plate The sequence of these operations is repeated to keep constant the pressure between the paper take up roller and paper stack paper take up pressure regardless of the amount of paper still available for use Tray2 lift up sensor PC7 PC 4036ma2233c0 4036 223200 82 Theory of operation ver 3 0 Aug 2006 17 Bypass section bizhub C250 17 Bypass section bizhub C250 Composition Bypass paper empty sensor 1 Paper side plate bizhub C250 C252 4038T2C128AA 4038T2C112AA Paper side plate Bypass paper take up roller 22 Bypass paper empty sensor PC13 Paper lifting plate 2 7 Q 9 3m 9 c di 3 A Bypass separator roller Paper width detection resistor UN1 4038T2C181AA 83 17 Bypass section bizhub C250 Theory of operation ver 3 0 Aug 2006 17 1 Drive Bypass paper feed clutch CL5 bizhub C250 C252 Bypass paper pick up solenoid SL2 4038T2C113AA Bypass lift up sensor PC 14 2 5 nd Q 2 o
212. pply motor turns forward or backward 2 Asthe drive gear turns the screw installed inside the toner cartridge rotates to transfer the toner to the toner cartridges replenishing port Then the toner goes through the carrier pipe of the main body and drops into the imaging unit port to replenish the supply of toner to the imaging unit B Toner replenishing control T C is detected when the developing clutch K CL4 is energized for K or when the color developing motor M3 is energized for C M and Y Based on T C ratio detected by the TRC sensor and amount of consumption calculated by the dot counter toner replenishing time amount is determined When the machine determines the toner replenishing sometime it detects the toner amount that surpasses the maximum volume for one replenishing control If it is not pos sible to replenish the supply of the required amount of toner within this maximum replen ishing time the reminder time is stored in memory and added to the replenishing time for the next replenishing sequence 47 13 Toner supply section Theory of operation ver 3 0 Aug 2006 13 3 2 Toner cartridge life control A Toner cartridge detection new unit detection timing detection is controlled by confirming the data of each unit with access to TC EEPROM board when the front door is closed Based on the data the machine confirms if the cartridge is mounted or not After detecting the presence of the cartridge wit
213. r going 2 ge through some corrections video signals C M Y and K are output to the processing printer image processing section 3 Printer image D A conversion will be performed after the VIDEO signals Y M C Bk 7 processing are corrected This data will control the emission of the laser diode 4 drum The image of the original projected onto the surface of the PC drum is changed to a corresponding electrostatic latent image 5 PC drum charging Supply DC charge on the PC drum 6 Laser exposure Expose photo conductor to a laser beam to develop electrostatic latent image 7 Developing The toner agitated and negatively charged in the developer mixing cham ber is attracted onto the electrostatic latent image formed on the surface of the PC drum It is thereby changed to a visible developed image AC and DC negative bias voltages are applied to the developing roller thereby preventing toner from sticking to the background image portion 8 1st image transfer A DC positive voltage is applied to the backside of the transfer belt thereby allowing the visible developed image on the surface of each of the PC drums Y M C and K to be transferred onto the transfer belt 12 Theory of operation ver 3 0 Aug 2006 5 Image creation process ADC positive voltage is applied to the backside of the paper thereby 9 2nd
214. r roller and transfer belt are measured The optimum image transfer output voltages applied to the 1st and 2nd image transfer rollers during printing are thereby automatically adjusted N o 5 D N o a gt a A Overview of ATVC operation Output a constant current to the 1st Mechanical control board PWB M image transfer roller Calculates the resistance value Y Calculate the resistance value of the Constant voltage 1st image transfer roller i i 9 Y Constant Measures the Constant Determine the 1st image transfer current voltage current output voltage 2 Y 2nd image transfer roller 1st image transfer roller Output a constant current to the 2nd Y Y 6 image transfer roller T g Transfer belt Transfer belt 8 Y 5 Calculate the resistance value of the Transfer belt drive roller PC drum ground o 2nd image transfer roller Y Determine the 2nd image transfer output voltage B 1st image transfer ATVC operation 1 The 1st image transfer constant current for each color of toner output from the high voltage unit HV1 is fed back to the high voltage unit HV1 via the 1st image trans fer roller transfer belt and PC drum ground 2 Calculate the resistance value with the mechanical control board PWB M accord ing to the v
215. r thermistor 1 TH2 168 C Conditions for completing the warm up Name Symbol Conditions for completing the warm up Heating roller THI When the tempera e Temperature will be controlled up to 168 C for thermistor 1 ture reached 143 C both TH1 and TH2 when no printing is demanded _ When the printing is demanded during the tem A Fusing pressure TH2 When the tempera perature control for between 143 and 168 C the roller thermistor 1 ture reached 140 C print temperature control will start B When the temperature inside the unit is 17 C or under at the beginning of the warm up Target control temperature Name Symbol Target control temperature Heating roller thermistor 1 TH1 168 C Fusing pressure roller thermistor 1 TH2 168 C Conditions for completing the warm up Name Symbol Conditions for completing the warm up Heating roller thermistor 1 When tempera ture reached 155 C Fusing pressure roller thermistor 1 TH2 When the tempera ture reached 155 C e Temperature will be controlled up to 168 C for both TH1 and TH2 when no printing is demanded When the printing is demanded during the temper ature control for between 155 and 168 C the print temperature control will start 20 3 10 Temperature control during low power mode The temperature control is performed at the lower t
216. ransfer part and fusing part so it will have a stable behavior and go smoothly into the fusing roller The air inside will be exhausted outside the unit A dust filter vertical transfer are mounted inside the ventilation duct in order to remove dust the suction fan sucked with the air inside the unit cooling fan motor 1 M12 Heat accumulated inside the unit will be discharged in order to avoid tem perature increase etc inside the transfer part transfer belt transfer clutch Cooling fan motor 2 M22 Heat accumulated inside the unit will be discharged in order to avoid tem perature increase etc of the upper part inside the board box as well as around the color PC motor Scanner cooling fan motor M202 Heat accumulated inside the IR part will be discharged in order to avoid temperature increase etc at the scanner part 124 Theory of operation ver 3 0 Aug 2006 24 Other control B Fan control Motor name Control Control conditions outline Plug in sub power switch OFF When re writing flash ROM In low power or sleep Stop bizhub C250 C252 In standby At paper jam in trouble or when the door is open All drive systems are OFF due to the cause except paper jam trouble or door being open Power supply cooling fan motor 1 M8 Half speed At warm up initial operation image stabilization function Full speed or printing Plug in sub power swit
217. ransport roller Registration roller rease chopper e Transport sensor 2 Entrance sensor PC1 ros Crease chopper Composition Operation Crease motor M10 SK Crease roller home position sensor PC22 SK 4511T2C510AA 10 Theory of operation ver 1 0 Aug 2006 5 Operations 5 5 1 Operation When the crease motor is energized for one cycle of operation the lower transport guides are retracted to the right and left and the crease chopper makes one up and down reciprocating motion In synchronism with the sequence of these operations the crease roller turns one complete turn to pull the paper downward at its center At the same time that the lower transport guides returns to their original position the crease chopper goes up The position of the crease chopper is detected by the crease roller home position sensor SD 503 2 Q 9 3m 9 Crease roller home ba 4511T2C008DA position sensor PC22 SK 11 5 Operations Theory of Operation Ver 1 0 2006 5 6 In amp out guide When the papers are discharged to the tray the in and out guide keeps the front edge of the large size paper so the discharged paper will not be pushed at its back edge by the following discharged paper The guide operates only when holding the paper which size is 257 mm or over B4 or over The in out guide advances when
218. rature transfer transfer table output output 9 Color mode Plain paper single 111 side only special paper colored 111 paper letterhead OHP 55 5 transparencies 55 5 Thick 1 2 3 ick paper 555 O O x O 55 5 Envelopes 55 5 e Plain 5 2nd side of 55 5 5 paper 2 sided printing Thick 55 5 8 Varies according to the number of copies paper size Varies according to the paper type printing side x Not vary Select thick paper 1 to use labels Replenish paper change Tray Settings gt Bypass UM D o Stam mici Ca Paper Size 4038T2E208AA 4038 2 207 iPaper Size 2 4038T2E209AA 75 16 Paper feed section Theory of operation ver 3 0 Aug 2006 16 3 5 Paper size detection control N Paper width length are detected to determine the paper size from their combination S A Tray1 2 Metric area N a Tray1 paper size board Tray1 CD paper size Paper size sw1 sw2 Sw3 SWA4 sensor PC9 A6S ON OFF ON OFF H A5 ON OFF ON OFF L B6S OFF ON OFF ON H B5 OFF ON OFF ON L A5S OFF OFF ON OFF H A4 OFF OF
219. re the visor a mounted on the shaft of the toner conveying screw overlaps with the visor B As the amount of the waste toner increases the load for the screw to rotate will increase The period of time the light shield Plate blocks the waste toner full sensor PC8 will then become shorter bizhub 250 252 Waste toner box Agitator screw 4038T2C174AA Light shield plate A Torsion coil spring A2 2 S g Q 5 4038T2C175AA Light shield plate B Waste toner full sensor PC8 TTT Light shield plate Light shield plate A Waste toner empty Waste toner full lt 4038T2C177AA 4038T2C178AA 4038T2C176AA Waste toner full sensor PC8 68 Theory of operation ver 3 0 Aug 2006 15 Toner collecting section B Waste toner level check control The amount of toner is determined by the period of time the waste toner full sensor PC8 is being blocked while the moving vane of the transport screw rotates five times The period of time the sensor is being blocked is divided into four levels Level 3 is judged as waste toner near full and level 4 as waste toner full Once the toner full is detected it has to be replaced with the new waste toner box in order to reset bizhub C250 C252 Waste toner full Rotation blades 1 rotation se
220. rease operations a loop is formed in the paper at the registration roller to correct skew The entrance sensor detects the leading edge of the paper and the registration roller forms a loop in the paper The skew registration clutch is then energized after a given period of time after the entrance sensor is activated by the leading edge of the paper this causes the registra tion roller to start turning e 7 Q 9 3m 9 Registration roller Entrance sensor PC1 a 4512T2C002DA 27 6 Punch kit PK 510 Theory of operation ver 1 0 Aug 2006 6 2 2 Punch mechanism The entrance sensor will detect the back edge of the paper and stop feeding the paper at the specified time The puncher will move down to make the punch hole at the back edge of the paper The punch hole will be made sheet by sheet The drive cam will be rotated by the punch motor inside the punch unit to move the slide cam back and forth The slide cam will move the puncher down to make the punch holes FS 514 PK 510 OT 601 Slide cam Puncher Punch motor M99 Paper feed direction Entrance sensor PC1 4349T2C525AA I 8 5 Q Q e 6 2 3 Punch status detection The punch status is detected by using the punch cam sensor punch home position sen Sor and the punch motor pulse sensor
221. red to the 1st image transfer pres sure retraction clutch CL3 2 When the 1st image transfer pressure retraction clutch is turned ON the rotation of the fusing drive motor M4 is transferred to the drive gear 3 Rotation of the drive gear turns the pressure cam which allows the sliding plate to move 4 The 1st image transfer roller Y M and C will move down to be pressed to the transfer belt when the sliding plate moves 5 The slide plate moves the actuator for the 1st image transfer retraction position sensor up 6 The actuator blocks the 1st image transfer retraction position sensor PC6 to detect the slide plate s movement 7 Turn the 1st image transfer pressure retraction clutch CL3 OFF The cam will stop rotating and the siding plate will stop 9 The 1st image transfer roller Y M and C will stay being pressed I 8 5 o Retraction operation 1 The rotation of the fusing drive motor M4 will be transferred to the 1st image transfer pressure retraction clutch CL3 2 When the 1st image transfer pressure retraction clutch is turned ON rotation of the fusing drive motor M4 will be transferred to the drive gear 3 The cam will rotate to move the sliding plate as the drive gear rotates 4 The 1st image transfer roller Y M and C will move up to retract from the transfer Belt as the sliding plate moves 5 The slide plate moves t
222. rint set undergoes the switchback sequence and stops The second sheet of paper stops as Soon as its trailing edge leaves the Entrance Roller When the first print set is fed out the Exit Roller starts turning backward to transport the first and second sheets of paper of the second print set to the Finisher Tray The Exit Rolls leave the Exit Roller 12 Theory of Operation 1 0 Jul 2005 5 Mechanical operations 5 1 3 Roller rolls spacing mechanism A Storage roller rolls spacing mechanism The Storage Roller briefly stops when the first sheet of paper completes a switchback sequence during a multi print cycle in the Sort Staple mode If however paper measures 217 mm or more in the FD direction the leading edge of the second sheet of paper reaches the Storage Roller before the roller stops turning The Storage Roller is therefore raised up to allow a given clearance from the Storage Rolls The Storage Roller is spaced from the Storage Rolls as a cam is turned by the corre sponding motor FS 501 B Exit roller rolls spacing mechanism Paper needs to be temporarily transported to the Finisher Tray in the Staple mode which makes it necessary to raise the Exit Rolls to provide a given clearance from the Exit Roller After the stapling sequence has been completed the Exit Rolls are lowered and pressed against the Exit Roller so that the paper can be fed out The Exit Rolls are spaced from
223. rouble code for the abnormally high temperature will be displayed and the print 5 ing will be prohibited When the level 2 protect is not executed for some reason level 3 protect will be performed Thermostat When the soft protect or hard protect control is not executed for some rea 3 protection son such as malfunction of the thermistor the heating thermostat fusing S pressure thermostat will detect the abnormally high temperature and the power for each heater lamp will be OFF 4038T2C145AA 110 Theory of operation ver 3 0 Aug 2006 20 Fusing section 20 3 12 Abnormally high temperature detection software protection t detects when the temperature of the heating roller and the fusing pressure roller increase abnormally high It informs the error and stops the operation A Detection condition When conditions below are protected it will be judged as heating roller abnormally high temperature C3751 fusing pressure roller abnormally high temperature C3752 bizhub C250 C252 Control Thermistor Symbol Set temperature When the temperature of TH1 and TH3 goes above Heating roller ther specified degree and stays for more than one sec 0 1 222 C ond the fusing temperature will be judged to
224. ry called FIFO is employed to compensate for a deviation in the scanning position of the original which represents a gap between two adjacent CCD chips thereby matching the output timing of R G and B data Also the color aberration of the lens is compensated at this time 5 FIFO memories are used to enlarge or reduce the image The image is enlarged by increasing the number of data readings and reduced by decreasing the number of data readings 6 The scanning are is divided into multiple blocks The ratio of color or monochrome is calculated for each of these blocks The machine then determines whether the entire original is colored or monochrome A histogram of lightness is also created for later AE processing e S i 9 The image data is transmitted to MFP control board on the write section through the interface cable 119 23 Image processing Theory of operation ver 3 0 Aug 2006 23 2 Write section image processing block diagram bizhub C250 C252 5 3 5 5 5 1 Resolution conversion processing in sub scanning direction 2 AE processing 3 Image data editing 4 Image area discrimination 5 Color conversion processing reflection density conversion masking UCR BP 6 Miscellaneous processing improved reproduction of black text edge emphasis
225. scan counter fax TX counter fax RX counter no of originals counter no of prints counter total duplex counter Counts one when an exit signal is applied to it Key counter option When charging prints by using the key counter copies cannot be made with out the key counter However PC prints and fax TX RX service are available without the key counter Displays the cumulative number of copies while the key counter is being mounted A mechanical counter driven by an electric signal Counts one when a paper take up start signal or image forming start sig nal whichever occurs earlier is applied to it A NOTE The counting modes can be selected at billing setting of service mode For details see field service adjustment setting billing setting 128 SS is SS KONICA MINOLTA SERVICE MANUAL THEORY OF OPERATION DF 601 2005 07 KONICA MINOLTA BUSINESS TECHNOLOGIES INC Ver 1 0 Revision history After publication of this service manual the parts and mechanism may be subject to change for improvement of their performance Therefore the descriptions given in this service manual may not coincide with the actual machine When any change has been made to the descriptions in the service manual a revised version will be issued with a revision mark added as required Revision mark To indicate clearly a section revised show to the left of the revised section A number w
226. sport motor by way of a belt As each of the transport rollers is driven paper fed off from the finisher is transported into the mailbin Transport motor M1 MK AGIS Foye Composition Operation Transport rollers 4510T2C503AA 5 Operations Theory of operation ver 1 0 Aug 2006 5 2 Paper path selection mechanism The bin entrance switching solenoids are energized or deenergized to direct paper fed from the finisher into a specific tray There are three bin entrance switching solenoids provided that will be energized or deen ergized to operate the corresponding bin entrance gate thereby selecting a specific paper path into a specific tray MT 501 Bin entrance switching solenoid amp S Q 5 4510T2C504AA Theory of operation ver 1 0 Aug 2006 5 Operations 5 3 Paper detection The paper detection sensor detects any sheet of paper that is fed into the tray causing the ADF LED to light up green steadily to inform the user that a sheet of paper has been fed into the tray Asthe paper stacks up and eventually deactivates the paper full detecting sensor at which time a paper full condition is detected MT 501 Paper full detection sensor 2 Q 9
227. t has been creased at the center or is to be stapled at the center stored in the storage tray the copy set stack is transported to the center stapling position through a pulse control of the exit roller of the finisher The copy set stack is thereafter fed out by the exit rollers of the saddle kit Exit rollers of the saddle kit Exit rollers of the finisher 4511T2C502AA Saddle exit open close motor M9 SK Lower exit roller of the saddle kit Saddle exit motor M8 SK 4511T2CO03DA SD 503 2 Q 9 9 5 Operations Theory of Operation Ver 1 0 2006 5 2 Exit roller pressure release 5 2 1 Pressure release mechanism The upper exit roller is moved away from or pressed up against the lower exit roller when the paper is fed out as a copy set stack The saddle exit roller home position sensor is used to control the pressure release posi tion of the upper exit roller SD 503 Upper exit roller 4511T1C601AA Saddle exit roller home position sensor PC18 SK Lower exit roller 5 S nd Q 5 4511T2C004DA Theory of operation ver 1 0 Aug 2006 5 Operations 5 2 2 Operation 1 The upper exit roller is moved up or down by the cams which are driven by the sad dle exit open close motor 2 When the copy set stack moves past the ex
228. t of paper and guide thereby preventing skewed feeding PC 103 PC 203 Polyethylene Sheet Lift up Upper Sensor 114 PC123 PC Height difference of Guide Pate Lever Pick up Roller Polyethylene Sheet 7 w S o h 5 74 4348M627AA Feed Roller Separation Roller 406112000228 Empty Sensor PC115 PC PC124 PC Actuator in 4348M602AA E Pick up Roller Home Position Pick up Roller Feed Position 4848MB0SAA PC 103 PC 203 2 S g Q E 5 6 5 Operations Theory of Operation Ver 1 0 Jul 2005 5 1 2 Paper lifting motion When the drawer is slid into the main body and the Device Detection Sensor is activated the Lift up Motor starts rotating to raise the Paper Lifting Plate The paper stack of the drawer pushes up the Pick up Roller When the upper limit posi tion is detected through the action of the actuator it stops raising the paper lifting plate As paper is consumed during the print cycle and the Pick up Roller is lowered the Lift up Motor is energized until the Lift up Upper Sensor is blocked again A When the drawer is slid in 1 The paper lifting plate goes up and the top surface of the paper stack pushes up the roller 2 The lifting motion stops as soon as the sensor detects the upper limit position Lift up Upper Sensor PC114 PC PC 123 PC Pick up Roll
229. tapling unit moving motor M7 9J08T2C013DA 5 4 3 Stapling position Asingle stapling unit is moved to perform 2 point stapling Typical stapling positions Parallel two Slant one point stapling points stapling Parallel one point stapling 4349T2C523AA 25 FS 514 PK 510 OT 601 2 S g Q E 5 6 5 Operations Theory of operation ver 1 0 Aug 2006 5 4 4 Staple sheet empty detection Staple empty detection sensor 1 2 detect whether or not there is a staple sheet still left When the number of staples left in the staple cartridge becomes about 20 a staple sheet empty condition results causing a corresponding empty message to appear on the con trol panel When the empty condition is detected the corresponding empty indication is given on the control panel At the same time the Stapling Unit moves to the front When a new staple cartridge is loaded the stapling motor is energized until the self priming sensor detects a staple which results in the staple to be fed up to the stapling position ES N Staple empty detection sensor1 2 m Self priming sensor1 2 D 26 Theory of operation ver 1 0 Aug 2006 6 Punch kit PK 510 6 Punch kit PK 510 6 1 Composition FS 514 PK 510 OT 601 4512T2C001DA 6 2 Operation 6 2 1 Skew correction mechanism For punch and center c
230. the Double Sided Mode an original which has had its 2nd side scanned is ejected onto the Exit Tray without the turn over motion Face down Ejection Exit Motor M3 DF Exit Gate Exit Solenoid SL2 DF 11 DF 601 15 Q 9 9 6 Mechanical operations Theory of Operation Ver 1 0 Jul 2005 6 3 3 Exit operation flow A Document exit motion in single sided mode Exit Motor Forward Rotation DF 601 Transport Motor Forward Rotation The original is transported to the switchback section Motor OFF after the original leaves from the Transport Belt Exit Motor OFF after passing a specified time from Turnover Sensor OFF Exit Motor Backward Rotation The original is transported to the Exit Roller The rotation speed of the Exit Motor is reduced before the Exit Sensor goes OFF The original is ejected on the Exit Tray with lower speed Exit Motor OFF B Document exit motion in double sided mode I 8 fe a e Exit Solenoid ON Exit Motor Forward Rotation Transport Motor Forward Rotation The original is transported to the exit section Transport Motor OFF after the original leaves from the Transport Belt Turnover Sensor OFF Exit Solenoid OFF after passing a specified time The rotation speed of the Exit Motor is reduced before the Exit
231. the Exit Roller as a lever is moved to the right and left by the cam which is rotated by the motor Exit Roller Rolls Spacing Motor M13 FN i g i 9 Storage Roller Home Position Sensor PC12 FN Storage Roller Rolls Spacing Motor M12 FN Storage Roller Exit Roller Home Position Sensor PC13 FN Exit Rolls 13 5 Mechanical operations Theory of Operation Ver 1 0 Jul 2005 5 2 Finisher tray Sheets of paper are properly aligned and stapled together on the Finisher Tray before being fed out into the Elevator Tray FS 501 Finisher Tray Elevator Tray I 8 fe a e 14 Theory of Operation 1 0 Jul 2005 5 2 1 Paper aligning mechanism 5 Mechanical operations The Aligning Plate is moved and the Paddles are turned to align paper correctly for sta pling A Aligning plate The Aligning Plate is moved to align the paper in the crosswise direction with reference to the center position of the Finisher Tray The Aligning Plate is moved as the CD Aligning Motor turns forward or backward The CD Aligning Home Position Sensor detects the Aligning Plate at its home position The movement of the Aligning Plate is determined with this home position used as the reference The movement of the plate is varie
232. their high reliability This reliability is achieved through high quality design and a solid service network Product design is a highly complicated and delicate process where numerous mechanical physical and electrical aspects have to be taken into consideration with the aim of arriving at proper tolerances and safety factors For this reason unauthorized modifications involve a high risk of degradation in performance and safety Such modifications are therefore strictly prohibited the points listed below are not exhaustive but they illustrate the reason ing behind this policy Prohibited Actions DANGER Using any cables or power cord not specified by KMBT Using any fuse or thermostat not specified by KMBT Safety will not be assured leading to a risk of fire and injury Disabling fuse functions or bridging fuse terminals with wire metal clips solder or similar object Disabling relay functions such as wedging paper between relay contacts S gt D 2 Disabling safety functions interlocks safety circuits etc Safety will not be assured leading to a risk of fire and injury Making any modification to the product unless instructed by KMBT Q Using parts not specified by KMBT 5 2 SAFETY AND IMPORTANT WARNING ITEMS 2 POWER PLUG SELECTION In some countries or areas the power plug provided with the product may not fit wall outlet used
233. ting screw Driven roller 4038T2C164AA I 8 5 Q Q Cleaning blade 14 3 7 Reversing control of the transfer belt Paper dust or toner between the transfer belt and the edge of the cleaning blade will be removed by slightly rotating the transfer belt backward and then rotating it forward again A Operation timing The cleaning will be executed at the end of each print job sequence cleaning will be performed when the power is turned ON the door is opened or closed or the sleep mode is released 60 Theory of operation ver 3 0 Aug 2006 14 Transfer corona section 14 3 8 2nd image transfer roller cleaning n order to remove the remaining toner on the 2nd image transfer roller DC charge is applied alternately to transfer the remaining toner on the 2nd image transfer roller to the transfer belt The cleaning blade then scrapes off the toner on the surface of the transfer belt 2nd image Transfer belt transfer roller e 2 Cleaning blade 4038T2C161AA A Operation timing The 2nd image transfer cleaning will be performed in sync with image stabilization The 2nd image transfer cleaning will be performed when mode 2 regular stabilization for the image stabilization control is being operated Paper moves past Start key ON 2nd image transfer roller Main motor M1 2nd image Transfer pressure retraction
234. tion The fusing pressure roller has the fusing pressure roller heater lamp H2 to heat the roller itself 20 3 3 Thermistor construction The fusing roller heating fusing pressure has five thermistors three on the heating roller two on the fusing pressure roller A Heating roller thermistor Name Symbol Function Heating roller thermistor 1 THA The main thermistor which detects the temperature at the cen ter of the heating roller Heating roller thermistor 2 TH3 The sub thermistor which detects the temperature at the edge of the heating roller Heating roller thermistor 3 The protection thermistor which detects the abnormally high temperature of the heating roller TH1 TH4 L JE 1 Heating roller 4038T2C158AA 4038T2C156AA 103 20 Fusing section Theory of operation ver 3 0 Aug 2006 B Fusing pressure thermistor 9 Symbol Function e Fusing pressure roller THe The main thermistor which detects the temperature at the cen 2 thermistor 1 ter of the fusing pressure roller 9 Fusing pressure roller TH5 The protection thermistor which detects the abnormally high 2 thermistor 2 temperature of the fusing pressure roller Fusing pressure roller THs TH2 4038T2C159AA 4038 2 157 20 3 4 Thermostat construction The fusing drive roller has two thermostats one on the heatin
235. tions Types of original Sheets books and three dimensional objects Max original size or 11 x 17 ledger Max original weight Max 2 kg Multiple copies 1 to 999 Warm up time 110 sec or less at ambient temperature of 23 C 73 4 F and rated source voltage Image loss Leading edge 4 2 mm Trailing edge copier printer 4 2 mm Trailing edge FAX 3 mm Rear edge 3 mm Front edge 3 mm First copy time Tray1 4 full size Monochrome print 8 4 sec or less Color print 11 7 sec or less System speed Plain paper Monochrome full color 111 mm sec Thick paper 90 to 256 post card envelope label sheet 55 5 mm sec Copying speed for multi copy cycle A4 8 1 2 x 11 crosswise feeding Monochrome print 1 sided 25 copies min 2 sided 23 copies min Color print text mode text photo mode special quality mode 1 sided 25 copies min 2 sided 23 copies min Fixed zoom ratios Full size 1 000 Metric area 0 500 x0 707 0 816 0 866 Reduction Inch area x0 500 x0 647 x0 733 x0 785 Metric area 1 154 x1 224 x1 414 x2 000 Enlargement Inch area 1 214 x1 294 x1 545 x2 000 Zoom ratios memory 3 memories Variable zoom ratios x0 250 to x4 000 in 0 001 increments i 1 Copy paper size Metric area AS to A5 865
236. ty Sensor detects when paper in the drawer runs out Lift Up Upper Sensor PC4 LCT Lever Pick up Roller 4061T2C500DA Separation Roller Paper Feed Roller Paper Empty Sensor PC3 LCT Actuator w a Pick up Roller Home Position Pick up Roller Feed Position 403 2 Q 9 3m 9 5 Operations Theory of Operation Ver 1 0 Jul 2005 5 2 Tray Section 5 2 1 Elevator tray mechanism The Main Tray is suspended by the cables at the front and rear As the Elevator Motor turns forward or backward the cables are wound to raise or lower the tray The Lift Up Lower Sensor detects the tray at its lower limit position PC 403 Cables 4348M614AA 4348M621AA Lift Up Lower Sensor PC13 LCT Elevator Motor M5 LCT 5 2 S a Q 5 9 a Sub Tray Main Tray Theory of Operation Ver 1 0 Jul 2005 5 Operations 5 2 2 Shift Gate drive mechanism e Ifthe Main Tray runs out of paper while the Sub Tray is loaded with paper the paper stack on the Sub Tray is moved to the Main Tray Atthis time the Division Board Motor is energized to retract the front and rear Shift Gates Division Board Motor M3 LCT Shift Gate move to outside 4061t2c103aa Shift Gate move to outside 4348M613AA 5 2 3 Shifter drive mechanism The
237. up or down according to the amount of paper fed onto it Ifthe elevator top face detection sensor is activated when a sheet of paper is fed onto the tray the elevator tray is temporarily lowered until the elevator top face detection sensor is deactivated and then the tray is raised to a level at which the elevator tray Elevator top face detection sensor is activated again This is done when each time a sheet of paper is fed onto the tray to keep the same height at all times for the elevator top face detection sensor of the paper on the tray FS 514 PK 510 OT 601 Elevator top face detection sensor PC12 I 8 fe e 4349T2C512AA 16 Theory of operation ver 1 0 Aug 2006 5 Operations A Tray position detection Tray position detection is controlled according to the number of times the elevator tray home position sensor is activated after the elevator tray lower limit sensor has been acti vated 1 Tray position detection operation 1 During the initial operation sequence the elevator tray is subjected to a descent motion until the elevator tray lower limit sensor is activated FS 514 PK 510 OT 601 Elevator tray home position sensor PC11 Elevator tray lower limit sensor PC13 2 Q 9 9 X 9J08T10109AA 2 After the elevator tray lower li
238. vice work both in the course of technical training and even after that for performing maintenance and control of the product properly Keep this Service Manual also for future service DESCRIPTION ITEMS FOR DANGER WARNING AND CAUTION In this Service Manual each of three expressions IN DANGER IN WARNING and CAUTION is defined as follows together with a symbol mark to be used a limited meaning When servicing the product the relevant works disassembling reassembling adjustment repair maintenance etc need to be conducted with utmost care AN DANGER Action having a high possibility of suffering death or serious injur A WARNING Action having a possibility of suffering death or serious injury A CAUTION Action having a possibility of suffering a slight wound medium trouble and property damage Symbols used for safety and important warning items are defined as follows Precaution when servicing the A A N product General Electric hazard High temperature precaution Prohibition when servicing the e Q product General Do not touch Do not prohibition with wet hand disassemble Direction when servicing the o product General Unplug Ground Earth instruction 5 1 SAFETY AND IMPORTANT WARNING ITEMS SAFETY WARNINGS 1 MODIFICATIONS NOT AUTHORIZED BY KONICA MINOLTA BUSINESS TECHNOLOGIES INC KONICA MINOLTA brand products are renowned for
239. witch and sub power switch are turned ON 127 24 3 Counter controls eiii iei E RECHNER HER EAR ERR UE 128 24 31 COnISITUCHOFI cocco neret e rcr a t E ERES 128 bizhub C250 C252 2 St 9 9 Theory of operation ver 3 0 Aug 2006 5659 0969 qnuziq uo eJsado uonsodwog Blank Page Theory of operation ver 3 0 Aug 2006 1 System configuration General 1 System configuration 1 2 System front view bizhub C250 e re N o 5 D N o a gt a 10 4038T1E101AA 1 Machine 8 Paper feed cabinet PC 403 2 automatic document feeder 9 Desk DK 502 3 Original cover OC 501 10 Finisher FS 501 4 Working table WT 501 11 Job separator JS 601 5 Auto duplex unit AD 503 1 12 Finisher FS 603 6 Paper feed cabinet PC 103 13 Punch kit for FS 603 PK 501 7 Paper feed cabinet PC 203 1 Ones for Europe or North America will be with the standard equipment NOTE Use the desk or the paper feed cabinet without fail when installing on the floor in order to keep the function and quality of the unit bizhub 250 252 1 System configuration Theory of operation ver 3 0 Aug 2006 A 1 2 System front view bizhub C252 18 2 17 ea 403
240. x 530 mm D x 170 mm H 3 3 4 inch W x 20 3 4 inch D x 6 3 4 inch H Weight 2 6 kg 5 75 10 Dimensions D Operating environment Conforms to the operating environment of the main body NOTE These specifications are subject to change without notice 1 Product specification Theory of Operation Ver 1 0 Jul 2005 Am x E Se e RD ze Theory of Operation Ver 1 0 Jul 2005 2 Overall composition Composition Operation 2 Overall composition 1 2 3 PK 501 PK 4 PK 131 5 amp 4 im amp 1 Punch Axis 3 Punch Motor M1P PK E 2 Off center Cam 4 Hole Punch Waste Container 501 4 131 I Q Q 3 Mechanical operations Theory of Operation Ver 1 0 Jul 2005 3 Mechanical operations 3 1 Punching operation The Punch Section consists of the Dyes Section and the Punch Blade Section The Punch which is attached to the Off Center Cam of the Punch Axis is driven by the Punch Motor and creates the punching operation with a reciprocating movement con verted from the rotation movement of the Punch Axis The Punching operation for the first sheet of paper completes when the Punch Home Position Sensor is switched ON from OFF after the Punch Axis turns 180 deg in the for ward direction The
241. x guide solenoid will switch the entrance and transport the paper temporarily to the switch back entrance The feeding direction of the paper will be changed to return the paper to the copier switch back entrance Paper will be transported by the switchback motor drive installed to the duplex unit When the duplex guide solenoid turns ON the switch back paper guide will be pushed up and the entrance will be switched to the switch back entrance Switch back entrance will be detected by the entrance switch back sensor The entrance will be switched to the forward entrance when a paper jam a trouble or setting error occurs Entrance switch back sensor PC4 Duplex guide solenoid SL3 Paper Switch back paper guide 9J08T2C003DA Entrance switch back sensor 4 Duplex guide solenoid SL3 9J08T1C101AA 12 Theory of operation ver 1 0 Aug 2006 5 Operations 5 1 2 Entrance transport section The paper fed from the main unit is transported to the intermediate transport section The entrance motor provides the drive for transporting the paper When the entrance motor is energized the entrance transport roller is driven to rotate When the skew registration clutch is energized the registration roller is driven to rotate The entrance sensor detects the paper in the transport section FS 514 PK 510 OT 601 Entrance motor M1 Entrance sensor PC1 Paper Entrance transport
242. y wipe it off A risk of fire exists When using any solvent ventilate the room well Breathing large quantities of organic solvents can lead to discomfort SAFETY AND IMPORTANT WARNING ITEMS 4 Used Batteries Precautions ALL Areas CAUTION Danger of explosion if battery is incorrectly replaced Replace only with the same or equivalent type recommended by the manufacturer Dispose of used batteries according to the manufacturer s instructions Germany VORSICHT Explosionsgefahr bei unsachgemaBem Austausch der Batterie Ersatz nur durch denselben oder einen vom Hersteller empfohlenen gleichwertigen Typ Entsorgung gebrauchter Batterien nach Angaben des Herstellers France ATTENTION Il y a danger d explosion s il y a remplacement incorrect de la batterie Remplacer uniquement avec une batterie du m me type ou d un type quivalent recom mand par le constructeur Mettre au rebut les batteries usag es conform ment aux instructions du fabricant Denmark ADVARSEL Lithiumbatteri Eksplosionsfare ved fejlagtig h ndtering Udskiftning m kun ske med batteri af samme fabrikat og type Lev r det brugte batteri tilbage til leverand ren Finland Sweden VAROITUS Paristo voi r j ht jos se on virheellisesti asennettu Vaihda paristo ainoastaan laitevalmistajan suosittelemaan tyyppiin H vit k ytetty paristo valmistajan ohjeiden mukaisesti VARNING Explosionsfara vid felaktigt batteribyte Anv nd
243. y change has been made to the descriptions in the service manual a revised version will be issued with a revision mark added as required Revision mark To indicate clearly a section revised show to the left of the revised section A number within represents the number of times the revision has been made To indicate clearly a section revised show in lower outside section of correspond ing page A number within represents the number of times the revision has been made NOTE Revision marks shown in a page are restricted only to the latest ones with the old ones deleted When a page revised in Ver 2 0 has been changed in Ver 3 0 The revision marks for Ver 3 0 only are shown with those for Ver 2 0 deleted When a page revised in Ver 2 0 has not been changed in Ver 3 0 The revision marks for Ver 2 0 are left as they are 2005 07 1 0 Issue of the first edition Date Service manual Ver Revision mark Descriptions of revision Theory of Operation Ver 1 0 Jul 2005 CONTENTS JS 601 2 Outline 1 Product Specification e Composition Operation 2 Overall CormpositiOri s acier eee dt pti e ere To HR ER 3 Center Cross SECON in Dr ide Ge cce fe 4 Mechanical operation nente otto tnter tn ttai eaten theta agus 4 1 Job tray paper transport mechanism E S S St 9
244. y of Operation 1 0 Jul 2005 2 Mixed original feed 2 Mixed original feed 21 Mixed original feed chart e For Metric E ges 297 mm 257 mm 210 mm 182 mm 148 mm Mixed Original Size A3 A4 B4 B5 45 5 B5S A5S A3 OK OK 297 4 OK OK B4 OK OK OK OK 257 5 OK OK OK OK A4S OK OK OK OK OK OK 210 5 OK OK OK OK 182 mm B5S NG NG OK OK OK OK OK 148 mm A5S NG NG NG NG NG NG OK OK For Inch dicii apa 11 8 1 2 5 1 2 Size Mixed Original Size 11 x 17 8 1 2 x 11 8 1 2 14 8 1 2 11 5 1 2 x 8 1 2 5 1 2 x 8 1 25 m 11x17 OK OK 8 1 2 x 11 OK OK 8 1 2 x 14 OK OK OK OK OK 8 1 2 8 1 2x 11S OK OK OK OK OK 5 1 2 x 8 1 2 NG NG OK OK OK 5 1 2 5 1 2 x 8 1 28 NG NG NG NG OK OK Mixed Original Feed available Tilted with in 1 5 or less NG NO Mixed Original Feed Can Set Original 2 Mixed original feed Theory of Operation Ver 1 0 Jul 2005 2 2 e If fed trouble occurrence will be highly possible Paper feed prohibited originals Type of Original Possible Trouble Sheets stapled or clipped together Take up failure damaged sheet defective drive mechanism due to jammed staples or clips Sheets glued together Take up failure da

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