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1. 2 4 2 7 ITB cleaning bias generation 00 RI 2 4 2 8 Fixing Bias Generation ison 2 22 2 ates ona dea ine da ed denne oe ens vad 2 4 3 Image Stabilizaton Control nn essen een RACE O A asc secesetiee cases dats eleseea cen shda saves ounsevseaelasusets O NN 2 4 3 2 Image density calibration D Max control isisisi y aa raa e a iadaa pia ike ea ine 2 18 2 4 3 3 Image halftone calibration D half CONTO ceececeececeeceneeeeeeeeeeeeeaeeeeeeaeeeecaaeeeeeaeeeseaaeeesaeeeeseaeeseeaeeesseaeeesseaeeeseeeeseeeeeeeeaee 2 18 24 4 Developing Rotary ii A aoaia a aaea oaa eE aE ea aa 2 18 PAE MN ee ee e o e AE AAE bl 2 18 2 4 4 2 Developing rotary rotation control 20us42440nnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnannnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnannn 2 19 2 4 4 3 Developing rotary engaging control 42440044snsannnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnsnnnnnnnnnnnnnnnnnnnnnnnnnnennnnnnnnnnnennnnnnn 2 20 2 4 4 4 Developing rotary position detection 44usn244unnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnannnnnnann 2 21 ZAS TONE Cartridge ii da 2 22 TASQUES A A A A AA A AA a AR AI eee 2 22 DAS MOMOry tag A A ic 2 23 2 4 53 Memory tag contact engaging control a gen ar use devevsecevaveccevsvecbeaeieatavesse 2 23 2 4 5 4 Cartridge presence detection ieiicgheeit nta adk ih Ad athe dl dite l
2. A 1 Be sure to install the top cover unit with the drive release lever 1 pulled up drive release status and then install the link lever 2 3 2 5 Front Cover 2 When installing the drum cartridge in the printer with the top cover unit removed be sure to do so after pulling up the drive release lever 3 2 5 1 Removing the Left Cover 1 securely drive release status When the lever is pulled down drive status the coupling 2 is pushed out Therefore the shaft of i the drum cartridge may hit the coupling and may damage the 1 Open the upper cover unit coupling 2 Remove the screw 1 and unhook the two claws 2 3 Pull the bottom of the left cover 3 toward you and slide it in the direction of under to remove it 0007 8191 2 F 3 21 3 2 5 2 Removing the Front Cover Unit 0005 8730 1 Unhook the two claws 2 holding the multi purpose tray 1 2 Slide the front cover unit 3 to the left Pull out the front cover unit to the right and remove it off the printer Chapter 3 F 3 22 3 2 6 Face up Cover 3 2 6 1 Removing the Face up Cover 0008 0136 1 Unhook the two claws 1 and remove the two levers 2 from the fixing unit 2 F 3 23 2 Unhook the two claws 1 1 F 3 24 3 Unhook the two claws 1 and remove the face up cover 2 from the fixing unit 11 2 1 gt PERL gt FRREGRGEEEE rrr rr te terres F 3 25 3 2 7 VO Cove
3. 40 22400s442400nnnnnnennnnnnnnnnnnnnnnnnnnnnnnnnennnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnsnnennn nn 3 84 3 5 7 Registration Clutch ii oie 3 85 3 5 7 1 Removing the Upper Cover Unit ada tis 3 85 3 5 7 2 Removing the Video Controller PCB eii 3 86 3 5 1 3 Removing the Registration Clutch da 3 87 3 5 8 Registr tion Shutter Unit coccion nennen a 3 87 3 5 8 1 Removing the Registration Shutter UNit ooonncccininccccnnncccnnnccononoccnnonccnnnnnncononnccnnannc nana n carac carne cnn 3 87 3 5 9 Front Fixing Paper Detection Sensor a ae r a r aae ar a Ae AE a a AE aa a Eaa EAA EEEa EA ESAERA LE iTA edate 3 87 3 5 9 Removing the Upper Cover Unit 22 ea a road 3 87 3 5 9 2 Removing the Video Controller PEB diou a aee iaa a paaa aa danian adie 3 89 3 5 9 3 Removing the Front fixing paper detection sensor 44444444400nsnnnonnnnnnennnnnonnnnnnennnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnn nn 3 89 PEERING SY o TE Me aaar E A ern E A T AA T E ta AS EA ai 3 91 J6 L Fg NN 3 91 3 6 1 1 Removing the Face up Cover cccccccceecceeteeeeeeeeeaeeeseaeeeeaeeeeeaaeescaaaeeecaaeeeeseaaeeeaaeeesaaaeeesaaeeeesaeeeseaeesseaaeseseeeesseeeeseneeeeteaaes 3 91 3 6 12 Removing the Fixing Film Unit 220 3 91 3 6 2 Fixing Pressure Roller ii iia 3 92 3 6 2 Removing the Face up Covers ra Alalals A ie aaa nee 3 92 3 6 2 2 Removing the Fixing FilmiUnitsathechcainie chin ea AA A a eae 3 93 3 6 2 3 Removing the Pre
4. ENGAGING DETECTION signal DRIVE signal ENGAGING MOTOR DRIVE signal DEVELOPING ROTARY STOPPER SOLENOID DEVELOPING ROTARY MOTOR DRIVE signal DEVELOPING ROTARY HOME POSITION DETECTION signal Developing rotary Y Developing toner level detection circuit rotary motor Developing rotary Developing rotary home position sensor Photosensitive i drum Engaging cam Toner cartridge Memory tag F 2 25 The developing rotary motor DCM703 rotates the rotary so that the EP 87 toner cartridges in each color face the drum one by one As the rotary stops the developing rotary stopper solenoid SL93 is driven to lock the rotary The rotary performs engaging operations of the rotary and of the memory tag contacts with the engaging motor PM704 See the memory tag engaging control on page 2 60 for details on an engaging operation of the memory tag contacts There are two sensors for the rotary which performs position detection and engaging detection The functions the rotary has are described next 2 4 4 2 Developing rotary rotation control 0005 8709 This control is utilized to rotate the rotary during a print or toner cartridge removal operation in order to move each toner cartridge to its specified position The DC controller moves the rotary by turning on off the developing rotary motor DCM703 as monitoring the position of the rotary with the developing rotary home position sensor PS51
5. 2 1 Functional Configuration 2 1 1 Outline 0005 8515 The functions of this printer can be divided into 6 blocks the engine control system laser exposure system image formation system pickup and feed system fixing and delivery system external and control system Laser exposure system Image formation system Engine control system Pickup and feed system Fixing and delivery system External and control system To external devices F 2 1 Chapter 2 2 2 Basic Sequense 2 2 1 Basic Operation Sequence 0005 8519 The operation sequences for the printer are controlled by the CPU in the DC controller in the engine control system The table below indicates the purposes and engine operations of each period from when the power is turned on until a print operation is completed and each motor stops rotating See the appendix for the timing chart T 2 1 Period Purpose Remarks WAIT Wait From the power switch is turned on until ITB cleaning is completed To clear a potential on the drum surface and clean the ITB In this period the printer executes residual paper detection toner level detection image density calibration control etc STBY Standby From the end ofthe WAIT or LSTR period until a print command is input from the video controller or the power switch is turned off To keep the printer ready to print INTR Initial rotation After the input of a
6. Chapter 2 2 6 FIXING UNIT SYSTEM 2 6 1 Overview Configuration 2 6 1 1 Outline 0007 9301 This printer utilizes an on demand fixing method which is configured as shown in the figure below T 2 4 Heater One heater is utilized in the fixing unit Fixing heater H1 For fixing film heating ceramic heater Thermistors Two thermistors are utilized in the fixing unit Main thermistor TH1 For fixing heater temperature control contact thermistor Sub thermistor TH2 For fixing heater temperature rise detection at its end contact thermistor Thermoswitch One thermoswitch is placed on top of the fixing heater non contact type When the fixing heater is abnormally overheated the switch opens and cut off the power supply to the heater Fixing heater Fixing sleeve unit a 9 Power supply unit DC controller PCB A MR oe Sub thermistor Er TH2 LB u Fixing 1 FIXING HEATER Fixing heater DRIVE signal control safety circuit circuit Sl 1 Main thermistor TH1 1 1 Thermoswitch L J TP Fixing unit Pressure roller F 2 45 This control circuit has the following four controls and functions Heater temperature control Maintains the fixing heater at a specified temperature Flicker prevention function Prevents flicker caused by attaching lighting apparatuses to the power source to which the printer is connected Pr
7. length of primary AC application number of drum rotations sent by the DC controller The DC controller updates the data each tine the power is turned on the upper cover is closed or a print job is over when the cumulative period of use reaches a specific level it will identify the condition as indicating the need of replacement of the drum cartridge c Waste Toner The machine is equipped with a mechanism to find out when the image cartridge becomes full of waste toner The detection is undertaken by the DC controller by monitoring the output of the waste toner detection mechanism which consists of a light emitting member LED and a light receiving member PD as well as a PCB The DC controller causes the LED to emit light using the LED drive signal P3 3V the light from the light emitting member reaches the cartridge along the light guide mounted to the cartridge The light them moves through the cartridge and is detected by the light receiving member after passing along the light guide the result is then sent to the DC controller in the form of the waste toner detection signal WASTONS The DC controller checks the level of waste toner with reference to the cumulative period of WASTONS for each single rotation of the stirring plate inside the cartridge when the power is turned on the upper cover is closed or a print job is over and will assume that the cartridge is full of waste toner if it finds that the level has reached a specific
8. 2 3 Pull the bottom of the left cover 3 toward you and slide it in the direction of under to remove it F 3 505 4 Remove the screw 1 and unhook the two claws 2 5 Pull the bottom of the right cover 3 toward you and slide it in the direction of the arrow to remove it e F 3 506 6 Open the face up cover 7 Unhook the claw 1 and remove the 1 O cover 2 from the printer 3 87 Chapter 3 F 3 507 8 Unhook the two claws 1 Slide the rear cover 2 downward and remove it j A 1 When attaching the upper cover be sure that you tighten the screw black you removed in step 5 at its correct location 2 When attaching the upper cover be sure that you match the 2 positioning lugs 1 of the upper cover with the 2 notches in the face up auxiliary cover At this time check to make sure that the paper retainer 3 does not block the paper path F 3 508 9 Unhook the claw 1 and remove the link gear 2 10 Remove the link lever 3 from the shaft 4 The enlargement of paper retainer OK NG F 3 509 11 Remove the three screws 1 F 3 512 A 1 Be sure to install the top cover unit with the drive release lever 1 pulled up drive release status and then install the link lever 2 2 When installing the drum cartridge in the printer with the top cover unit removed be sure to do so after pulling up the drive release lever 1 securely drive re
9. 4 2 F 3 194 4 Remove the screw 1 and unhook the two claws 2 5 Pull the bottom of the right cover 3 toward you and slide it in the direction of the arrow to remove it F 3 198 11 Remove the three screws 1 2 F 3 195 6 Open the face up cover 7 Unhook the claw 1 and remove the I O cover 2 from the printer F 3 199 12 Remove the screw 1 black and detach the upper cover 2 from the machine F 3 196 8 Unhook the two claws 1 Slide the rear cover 2 downward and remove it F 3 200 3 36 Chapter 3 1 When attaching the upper cover be sure that you tighten the screw black you removed in step 5 at its correct location 2 When attaching the upper cover be sure that you match the 2 positioning lugs 1 of the upper cover with the 2 notches in the face up auxiliary cover At this time check to make sure that the paper retainer 3 does not block the paper path The enlargement of paper retainer OK NG A ji Be sure to install the top cover unit with the drive release lever 1 pulled up drive release status and then install the link lever 2 When installing the drum cartridge in the printer with the top cover unit removed be sure to do so after pulling up the drive release lever 1 securely drive release status When the lever is pulled down drive status the coupling 2 is pushed out Therefore the shaft of the drum
10. Control Mechanisms e creada dead ion dan Rd son ados 2 6 2 1 Fixing Temperature Control snoin enn o a R E E E E s songs S E R EEEE AE REET E EEES RESE 2 6 2 1 1 Heater temperature control r 26 3 Protective FUNCIONS ieia iri a i E EEN EA E AAO il 202 1 Flicker prevention UNCION A A EE E EN OOE A RE OAE EA 26 32 Protective function e o 26 3 3 Fixing unit failure detect ont a ciecss sccsssaeescevceyenescexecatacsssavauecstavssaevievsaceenssnascqanadexseiacesacesd aveveasaavesdandesbasousgsausdstavasa eLiighsasodavaassqeraceasaievasvenseavis 2 7 EXTERNAL AND CONTROLS SYSTEM ci iii 2 42 2141 POWET SUPP Yeti RR Bere allein Sl EE A 2 42 NA NN 2 42 27 1 1s Low voltage power supply PB e e ed deco o ad 2 42 AO to A RON 2 42 DI Protective Function iia 2 42 2 8 ENGINE CONTROL SYSTEM conti rane A ea es dd a a add Loa seas 2 43 DB ICONS UC EAE EEEE PET Candee aa a ad E E EET A A E das 2 43 28 1 RAN 2 43 2 32 DE Controller tii iia season ISA AS EEE OEE OEE ies 2 43 DER IQM MA menunn seinen EET EE E E E EEE A EE 2 43 28 22 O A os 2 44 2 8 2 3 MOtOr fat Coto iria aia diari HEREIN eiii 2 45 DAM Md COO O R 2 45 PES ad AAA asseaessesssponeesvearesusess ner a neeysnisveshdessseseieascuszaiei ces Sassen BE EEA EEAS rS ESEE 2 46 292 0 Cooling fan A AE aes p oda REGEN eater 2 8 3 Wniterface Controller aia 2 8 3 1 CUCL Grae E NAE O RO 2 8 3 2 Operation of the Blocks Contents 2 8 3 3 Canon Advanced Printing Technology CAPT Chapter 2
11. F 3 177 3 2 17 2 Removing the Cooling Fan 0005 8999 1 Disconnect the three connectors 1 and unhook the two claws 2 2 Slide the fan duct 3 in the direction of the arrow Remove the cooling fan 4 with the fan duct F 3 175 A 1 Be sure to install the top cover unit with the drive release lever 1 pulled up drive release status and then install the link lever 2 2 When installing the drum cartridge in the printer with the top cover unit removed be sure to do so after pulling up the drive release lever 1 securely drive release status When the lever is pulled down drive status the coupling 2 is pushed out Therefore the shaft of the drum cartridge may hit the coupling and may damage the coupling F 3 178 3 Unhook the two claws 1 and remove the cooling fan 3 from the fan duct 2 3 32 3 2 a 1 AAA oS se ne Sie M y WM A 1 When installing the cooling fan be sure that the inscribed arrow indicating the direction of the winds on the fan is facing inside 2 The cooling fan is set next to the high voltage cable Be sure to turn OFF the power before replacing the cooling fan 3 2 18 Internal Temperature Detection Thermistor 3 2 18 1 Removing the Upper Cover Unit F 3 176 0007 8481 1 Open the upper cover unit 2 Remove the screw 1 and unhook the two claws 2 3 Pull the bottom of the left cover 3 toward you and slide it i
12. F 3 405 3 5 2 5 Removing the Main Drive Unit 0007 8981 1 Remove the 2 screws 1 and detach the control panel mount 2 F 3 406 2 Remove the 6 screws 1 and detach the shield mount 2 3 71 Chapter 3 F 3 407 3 Remove the 18T gear 1 F 3 408 4 Free the 2 claws 1 and detach the inside cover 2 F 3 409 5 Free the claw 1 and detach the lower front cover 2 F 3 410 6 Remove the 2 screws 1 and detach the front auxiliary cover 2 3 72 2 F 3 411 A When installing the main drive unit be sure to pull up the drive release lever 1 drive release status before installing the 18T gear 2 as shown in the figure right side Note that the 18T gear may not engage with the drive release lever if the gear is not placed properly DN 777 F 3 412 7 Disconnect the connector 1 and remove the E ring 2 Remove the registration clutch 3 2 F 3 413 A The connector on the registration clutch side cannot be disconnected When removing the registration clutch be sure to disconnect the connector on the DC controller PCB J113 8 Disconnect the three connectors 1 Chapter 3 F 3 414 9 Remove the eight screws 1 and the main drive unit 2 F 3 415 3 5 2 6 Removing the Multi purpose Tray Paper Sensor 0005 8937 1 Disconnect the connector 1 and unhook the two claws 2 Remove the multi purpose tra
13. The memory tag contacts are disengaged from the memory tag normally However when the DC controller reads and writes to the memory tags in each toner cartridge it performs memory tag contact engaging control The DC controller starts memory data communication as the toner cartridge contacts with the memory tag contact After receiving memory data the DC controller updates the information with specified timing and writes it to the memory tags for each cartridge The DC controller instructs the memory tag to read or write under the following conditions lt Read gt Power is turned on Top cover is closed lt Write gt After 50 papers printing When a Change Has Occurred to the Data on the Lives of Parts Memory tag Memory tag contact DC controller Memory data EP 87 toner cartridge F 2 30 2 4 5 3 Memory tag contact engaging control 0005 8733 This control is utilized to contact memory tag contacts on the printer side with that on the toner cartridge side in order to enable communication between the memory tags in each toner cartridge and the printer The DC controller moves the memory tag contact to either of two positions engaging position or disengaging position by switching the rotational direction 2 23 Chapter 2 of the engaging motor PM704 At the time of memory tag contact engaging travelling from a disengaging position to an engaging position the DC controller rotates the engaging motor
14. Unhook the claw 1 and remove the link gear 2 10 Remove the link lever 3 from the shaft 4 F 3 92 11 Remove the three screws 1 Chapter 3 The enlargement of paper retainer 3 2 11 2 Removing the Video Controller PCB gt 0007 8204 1 Remove the seven screws 1 and detach the shield cover F 3 95 A 1 Be sure to install the top cover unit with the drive release lever 1 pulled up drive release status and then install the link lever 2 F 3 98 2 When installing the drum cartridge in the printer with the top cover unit removed be sure to do so after pulling up the drive release lever 2 Remove the four screws 1 and disconnect the three connectors 2 1 securely drive release status When the lever is pulled down then detach the interface connector PCB 3 from the machine drive status the coupling 2 is pushed out Therefore the shaft of the drum cartridge may hit the coupling and may damage the coupling AAA oS se F 3 99 A If you have replaced the video controller PCB be sure to go through the following 1 Execute PWM adjustment in service mode 2 Remove the existing EEPROM IC6 and mount it to the new PCB 3 2 11 3 Removing the DC Controller PCB 0005 9009 1 Remove the 6 screws 1 and detach the shield mount 2 3 18 Chapter 3 F 3 100 2 Remove the four screws 1 and disconnect the 28 connectors 2 Remove the DC control
15. When the power is turned on at the end of a print job or the upper cover is closed the TOPSNS signal cannot be detected at specific intervals 2 28 Chapter 2 DC controller Video controller 52 55 E ES D2 18 5 055 232 up ES so 206 l Cae 225 Interrupting areas poche teed ii mA ma EY JE eee Q 2225 ITB home position sensor PS71 Drum cartridge SC Print command HP HP HP HP HP HP HP TOPSNS i TOP VIDEO signals 7 E Mono color print Bk u u IM IM Y M Cc Bk Full color print F 2 36 A When the LBP5200 makes mono color prints it decreases the distance between sheets to increase printing speed With previous machines the TOP signal has been generated with reference to the output of the ITB home position sensor this machine on the other hand detects the TO signal with reference to the internal clock pulses of the DC controller 2 4 6 5 Drum cartridge presence detection 0005 8761 This detection is utilized to detect the presence of the drum cartridge When the power is turned on or the top cover is closed the DC controller determines the presence or absence of the cartridge by monitoring the following two items 1 PS71 TB HOME POSITION DETECTION signal outputs L periodically 2 Output results from the TR2 FEED BACK signal for secondary transfer bias exceed a specified value The DC controller determines a cartridge presence
16. open circuit in the sub thermistor fixing assembly faulty start up open circuit in the fixing heater Check the connector of the fixing film unit Replace the fixing film unit Replace the DC controller PCB E001 fixing heater overheating short circuit in the main thermistor fixing heater overheating short circuit in the sub thermistor Check the connector of the fixing film unit Replace the fixing film unit Replace the DC controller PCB E002 fixing assembly low temperature open circuit in the main thermistor fixing assembly low temperature open circuit in the sub thermistor fixing assembly low temperature open circuit in the fixing heater Check the connector of the fixing film unit Replace the fixing film unit eplace the DC controller PCB E010 main motor fault Check the connector of the main motor Replace the main motor replace the DC controller PCB E021 developing rotary motor fault Check the connector of the developing rotary motor Replace the developing rotary motor Replace the DC controller PCB E022 developing rotary drive mechanism fault Check the connector of the developing rotary drive sensor Check the connector of the drive motor Replace the developing rotary drive sensor Replace the drive motor Replace the DC controller PCB E071 ITB home position sensor fault Check the connector of the ITB home position sensor R
17. 0007 8205 1 Open the upper cover unit 2 Remove the screw 1 and unhook the two claws 2 3 Pull the bottom of the left cover 3 toward you and slide it in the direction of under to remove it 3 21 Chapter 3 9 Unhook the claw 1 and remove the link gear 2 10 Remove the link lever 3 from the shaft 4 F 3 118 The enlargement of paper retainer Ok yr 11 Remove the three screws 1 F 3 121 F 3 119 A 1 Be sure to install the top cover unit with the drive release lever 1 pulled up drive release status and then install the link lever 2 2 When installing the drum cartridge in the printer with the top cover unit removed be sure to do so after pulling up the drive release lever 1 securely drive release status When the lever is pulled down drive status the coupling 2 is pushed out Therefore the shaft of the drum cartridge may hit the coupling and may damage the coupling 12 Remove the screw 1 black and detach the upper cover 2 from the machine 1 1 F 3 120 i 1 TPS Soe SW A N 1 When attaching the upper cover be sure that you tighten the screw N black you removed in step 5 at its correct location 2 When attaching the upper cover be sure that you match the 2 positioning lugs 1 of the upper cover with the 2 notches in the face up auxiliary cover At this time check to make sure that the paper retainer 3 does not bl
18. 3 94 hooked into the guide F 3 547 16 Lift the fixing film unit 1 up straight in horizontal position to take it out of the fixing unit F 3 548 3 6 2 3 Removing the Pressure Roller 0007 9406 1 Remove the pressure roller 1 from the fixing unit F 3 549 3 6 3 Delivery Sensor 3 6 3 1 Removing the Face up Cover 0008 3515 1 Unhook the two claws 1 and remove the two levers 2 from the fixing unit Chapter 3 2 F 3 550 2 Unhook the two claws 1 1 F 3 551 3 Unhook the two claws 1 and remove the face up cover 2 from the fixing unit 1 2 1 N j n pasa Lod adadale aih aiaiai Jaaa iad laade ee rre pl F 3 552 3 6 3 2 Removing the Fixing Delivery Paper Sensor 0005 8939 1 Unhook the two claws 1 and disconnect the connector 2 Remove the fixing delivery paper sensor 3 3 6 4 Fixing Motor 3 6 4 1 Removing the Upper Cover Unit 0007 9023 1 Open the upper cover unit 2 Remove the screw 1 and unhook the two claws 2 3 Pull the bottom of the left cover 3 toward you and slide it in the direction of under to remove it 2 F 3 554 4 Remove the screw 1 and unhook the two claws 2 5 Pull the bottom of the right cover 3 toward you and slide it in the direction of the arrow to remove it 2 F 3 555 6 Open the face up cover 7 Unhook the claw 1 and remove the I O cover 2 from the printer 8 Unhook
19. 3 Periodical Service 4 3 1 Periodic Service 0005 8793 The printer has no parts that require periodic servicing 4 3 Chapter 4 4 4 Cleaning 4 4 1 Pick up roller 0005 8795 Clean it with lint free paper 4 4 2 Separation Pad 0005 8796 Clean it with lint free paper 4 4 3 Registration roller 0005 8797 Clean it with lint free paper If the dirt cannot be removed use alcohol with lint free paper Be careful not to remove the spring otherwise it may cause a skew or jam If it is out of place reset it properly 4 4 4 Registration shutter 0005 8801 Clean it with lint free paper 4 4 5 Secondary transfer roller 0005 8802 Clean it with lint free paper only when it has severe dirt When cleaning the roller do not touch or contaminate with solvent or oil 4 4 6 Feed belt 0005 8805 Clean it with lint free paper T 4 2 1 Feed belt 6 Separation pad 2 Secondary transfer roller 7 feed roller 250 sheet paper feeder 3 Registration shutter 8 Pick up roller 250 sheet paper feeder 4 Registration roller 9 Separation pad 250 sheet paper feeder 5 Multi purpose tray pick up roller 4 4 7 External Covers 0005 8823 When cleaning the external covers use a firmly squeezed wet cloth Chapter 4 4 5 User Maintenance 4 5 1 Toner cartridge 0005 8682 Replace it as necessary 4 5 2 Drum Cartridge 0005 8684 Replace it as nec
20. 5 Warm up time 120 sec or less max Printing resolution 600 dpi First print time 27 sec or less approx A4 LTR full color 16 sec or less A4 LTR mono color Print speed A4 4 prints min approx full color 19 prints min approx mono color Print speed LTR 4 prints min approx full color 20 prints min approx mono color Cassette paper size A4 BS A5 LGL LTR Executive cassette pickup mechanism standard with Japanese model Multifeeder paper size 76 2 to 216 mm in width 127 to 356 mm in length Cassette paper type plain paper 64 to 105 g m2 recycled paper colored paper cassette pickup mechanism standard with Japanese model Multifeeder tray paper type plain paper 64 to 105 g m2 heavy paper 106 to 135 g m2 recycled paper colored paper label sheet transparency envelope postcard Cassette capacity about 250 sheets of plain paper 64 g m2 cassettes pickup mechanism standard with Japanese model Multifeeder tray capacity if plain paper 64 g m2 about 125 sheets if transparency about 60 sheets if envelope about 10 sheets Delivery tray stack if plain paper 64 g m2 about 125 sheets if transparency about 10 sheets if envelope about 10 sheet Memory 8 MB internal expansion not possible Operating environment Temperature range 10 to 30 deg C Operating environment Humidity range 10 t
21. 5 3 ERROR CODE 5 3 1 Outline 0005 8932 The printer is not equipped with a status display LCD and it uses a PC s display to indicate its status error codes and messages as needed The screen that appears on the PC s display is referred to as the status window See the diagram below The status widow is a screen used to communicate to the user the state of the printer by means of messages and animations A message is indicated in the message areas one main and the other sub A user message is one used to prompt the user for action while a service message is used to prompt the service person for action 32 Canon LASER SHOT LBP 2410 L ES Job J Option S Help H E Ready to Print ae Printing Job D Title Contents Docment name User name Computer name USBPRNO1 F 5 3 The page that follows describes service messages For user messages see the User s Guide that comes with the printer 5 3 2 Service Messages A service message is a message indicated in response to a fault occurring in the printer unit and is also know as an error code An error code appears in the message area of the Status window and consists of a main code and a detail code Exxx in which xxx being 3 numerical characters T 5 3 Code Main cause description Remedial action E000 fixing assembly faulty start up open circuit in the main thermistor fixing assembly faulty start up
22. 5 Using the Machine 1 5 1 Control Panel 1 6 Safety ns neigen dass 1 6 1 Safety ofthe Laser Light 1 6 2 Regulations Under the Center for Devices and Radiological Health CDRA useseesesesesnesessesnenesnenennesnenennesenesnen 1 10 1 6 3 Safety ERROR 1 10 1 6 4 Haridling the Laser Unica cochetes che stvciuatvecnatuaeb aN iay lance came KNEE EAEE EE EEES 1 10 1 6 5 Safety of Power Supply Chapter 1 1 1 Features 1 1 1 Feature 0007 6279 1 Compact color printer The depth dimension of this printer is narrowed down by miniaturizing the image formation system units such as ITB unit rotary etc The weight of it is reduced by adopting a molded plastic body frame simplifying mechanical units and making the multi purpose tray the only pick up source in the printer 2 Reduced wait time and low power consumption This printer has realized wait time reduction and energy saving as compared to the models using the roller fixing method by adopting the on demand fixing method 3 DRUM CARTRIDGE The drum cartridge ITB unit and ITB toner case are integrated into the drum cartridge This allows the burdensome replacement procedure of consumable parts to be minimized for users It resulted in the enhancement of user maintenance 4 Employment of Canon Advanced Printing Technology With Canon Advanced Printing Technology data can be processed within a host computer This frees the printer from the PDL conversion and image processing
23. CONTROLS SYSTEM 2 7 1 Power Supply 2 7 1 1 Power Supply 2 7 1 1 1 Low voltage power supply PCB 0007 6735 This circuit converts AC voltage input from the power supply receptacle to DC power and supplies it to each load The AC power is supplied to the low voltage power supply circuit by turning on the power switch SW1 The supplied AC power is converted to the DC power required in the printer 24 V 5 V and 3 3 V 24 V is supplied to drive loads such as the motors solenoids clutches etc and to the high voltage power supply circuit 5 V is supplied to the laser driver circuit BD circuit and video controller 3 3 V is supplied to the video controller sensors etc and the ICs etc in the DC controller 24 V can be divided into 24 VA and 24 VB 24 VB is supplied from the low voltage power supply PCB to the motors and optional units constantly 24 VA is supplied to the high voltage power supply circuit developing rotary motor toner cartridge motor solenoids clutches etc through the door open detection switch SW2 It stops power supply when the door switch is turned off by opening the top cover It also functions as the DOOR OPEN DETECTION DOORS signal and the CPU detects a door open with this signal 2 7 1 2 Other Function 2 7 1 2 1 Protective function 0005 8800 The low voltage power supply circuit utilizes overcurrent overvoltage protective functions They automatically shut off an output voltage to prevent a p
24. Drum cartridge removal 0005 8531 1 Open the top cover unit and remove the drum cartridge A When removing the drum cartridge with the top cover unit detached be sure to pull up the drive release lever 1 The drum cartridge cannot be removed otherwise 2 Remove the drum cartridge from the printer 3 2 Chapter 3 3 2 EXTERNAL AND CONTROLS SYSTEM 3 2 1 Rear Cover 3 2 1 1 Removing the Rear Cover 0005 8734 1 Open the upper cover unit 2 Remove the screw 1 and unhook the two claws 2 3 Pull the bottom of the left cover 3 toward you and slide it in the direction of under to remove it 2 F 3 5 4 Remove the screw 1 and unhook the two claws 2 5 Pull the bottom of the right cover 3 toward you and slide it in the direction of the arrow to remove it 2 F 3 6 6 Open the face up cover 7 Unhook the claw 1 and remove the I O cover 2 from the printer 3 2 2 Right Cover 3 2 2 1 Removing the Rght Cover Unit 0005 8725 1 Open the upper cover unit 2 Remove the screw 1 and unhook the two claws 2 3 Pull the bottom of the right cover 3 toward you and slide it in the direction of the arrow to remove it 3 2 3 Left Cover 3 2 3 1 Removing the Left Cover 0005 8706 1 Open the upper cover unit 2 Remove the screw 1 and unhook the two claws 2 3 Pull the bottom of the left cover 3 toward you and slide it in the direction of under to remove it 8 Un
25. El El a xa 0 cc 5 OF 5 2 25 u z5 gt E OS oF 62 gt 3 cn a ae om zo a2 ED Oo fc wa 9 ze o ae o OB uz oo twa a gt ua Zu ow gt 0p 20 gt gt z _ lt 23 523 gt y SE ea es 658 338620 Bo FER ZE xa 4223 ao ESR ozu OO yatsa i o58 25 Hse lt 5c 058 tua a9 SA za JE rg we SEE Po x ES 92 2 ana gt tr s Lu zo Eo Oo o Zo Su a 6E i Su o lt co a Da ED a iw gt lt aa E a 29 Facedown tray u delivery roller pean ER we ee N u a ll A e Mn 4 uot pases F Da y voy a ae pl ES oe Nr OO ITS 67 uA 14 e ee cou Multi purpose tee al es Ds s ur een MS 2 tray pick up Te ii Engaging Registratior roller Yh shutter PS1 NA es YO PS S 720 y f fio P J Lifting Pressure roller ga Registration roller F 2 42 PS1 Fixing delivery paper sensor PS711 Registration paper sensor PS718 Multi purpose tray paper sensor PS720 Front fixing paper detection sensor DCM701 Main motor PM702 Fixing motor SL92 Multi purpose tray pick up solenoid CL1 Registration clutch CL2 Roller engaging clutch 2 5 2 Other Control 2 5 2 1 Skew correction function 0005 8815 This function is utilized to correct the skew of the paper to be fed using the registration shutter method The operations of this function are discussed below When paper is fed to the registration roller the leading edge of paper is pushed against the registration shutter to correct a skew 1 Paper is warp
26. F 2 17 2 4 1 6 Fixing block 0007 8134 A toner image transferred onto paper in the transfer block can be smeared easily by hands since only the electrostatic attraction holds the image on paper The toner on paper is melted and mixed by heat and pressure applied to it and then the image becomes permanent Step 8 Fixing The machine uses an on demand method which requires a low thermal capacity The method enables the machine to start up quickly and its heater to use little power while the machine is in a standby state The machine may therefore be characterized by a short wait time and low energy consumption The machine applies a positive DC bias to its pressure roller for the purpose of reinforcing the retention of toner on print paper consequently preventing stray toner Moreover to prevent offset from the fixing film the film surface is given a fluorine coating The sleeve of the fixing film is made of rubber 2 12 Chapter 2 Fixing film Fixing heater Toner DC bias Y E Pressure roller F 2 18 2 4 1 7 ITB cleaning block 0005 8943 The ITB and drum are cleaned in this block by returning residual toner on the ITB into the waste toner case through the drum as a preparation for the next print operation This block comprises the following four steps A Residual toner In the secondary transfer step not all the toner on the ITB is transferred onto paper Some toner remains on the ITB This toner is called the residual t
27. F 3 281 A 1 Be sure to install the top cover unit with the drive release lever 1 pulled up drive release status and then install the link lever 2 3 4 4 2 Removing Rotary Drive Unit 2 When installing the drum cartridge in the printer with the top cover unit removed be sure to do so after pulling up the drive release lever 1 securely drive release status When the lever is pulled down 1 Remove the 6 screws 1 and detach the shield mount 2 drive status the coupling 2 is pushed out Therefore the shaft of the drum cartridge may hit the coupling and may damage the coupling F 3 283 0007 8521 F 3 284 2 Disconnect the four connectors 1 3 51 Chapter 3 F 3 286 A The self tapping screw 1 used for installing the rotary drive unit must be screwed the last F 3 287 3 4 4 3 Removing the Toner Cartridge Motor 0007 8525 1 Remove the screw 1 and remove the toner cartridge motor 2 F 3 288 3 52 3 4 4 4 Removing the Developing Rotary Stopper Solenoid 0005 8989 1 Remove the 2 screws 2 and detach the motor base 2 for the rotary drive assembly 2 F 3 289 2 Remove the screw 1 and the developing rotary stopper solenoid 2 from the rotary drive unit 2 F 3 290 3 4 5 Developing Rotary Toner Level Detection PCB 3 4 5 1 Removing the Upper Cover Unit 0007 8628 1 Open the upper cover unit 2 Remove the screw 1 and unhook t
28. Hold it down for 1 sec or more before replacing any toner cartridge thus causing the machine to enter toner replacement mode and thus enabling replacement 3 Paper Lamp red ON indicates that there is no paper or no paper size has been selected 4 Alarm Lamp red ON indicates that a service call condition exists flashing indicates that an error other than a service call condition exists 5 Ready Lamp blue ON indicates that the machine is ready to print flashing indicates that the machine is printing or executing a job not being able to receive print data 1 9 Chapter 1 1 6 Safety 1 6 1 Safety of the Laser Light 0005 8525 Laser light can prove to be hazardous to the human body The machine s laser unit is fully enclosed in a protective housing and external covers so that its light will not escape outside as long as the machine is used normally 1 6 2 Regulations Under the Center for Devices and Radiological Health CDRH 0007 6301 The CDRH of the US Food and Drug Administration put into effect regulations governing the sale of laser products in the US on August 2 1976 These regulations apply to all laser products produced on and after August 1 1976 and a laser product cannot be sold unless it has been certified to comply with the regulations The following is the label used to indicate that the product has been certified under the regulations and all laser products sold in the US must bear the label CANON
29. INC 30 2 SHIMOMARUKO 3 CHOME OHTA KU TOKYO 146 JAPAN MANUFACTURED THIS PRODUCT CONFORMS WITH DHHS RADIATION PERFORMANCE STANDARD 21CFR CHAPTER1 SUBCHAPTER J F 1 8 1 6 3 Safety of Toner 0005 8520 The machine s toner is a non toxic material composed of plastic iron and small amounts of dye A Do not put the toner into fire It may explode Toner on the Skin or Clothes 1 If your skin or clothes came into contact with toner use dry tissue to remove the toner and then wash with water 2 Do not use warm or hot water which will cause the toner to jell permanently fusing it with the fibers of the clothes 3 Do not bring toner into contact with vinyl material They are likely to react with each other 1 6 4 Handling the Laser Unit 0005 8420 The laser scanner unit emits invisible laser beam DO NOT disassemble the unit as the laser beam can possibly damage your eyes The unit cannot be adjusted in the field The following label is attached to the cover of the unit LBP 2410 Invisible laser radiation when open DANGER AVOID DIRECT EXPOSURE TO BEAM INVISIBLE LASER RADIATION WHEN OPEN CAUTION VOID EXPOSURE TO BEAM ATTENTION RAYONNEMENT LASER INVISIBLE EN CAS D OUVERTURE XPOSITION DANGEREUSE AU FAISCEAU VORSICHT IITE LASERSTRAHLUNG WENN ABDECKUNG GE FFNET NICHT DEM STRAHL AUSSETZEN RADIAZIONE LASER INVISIBILE IN paso DI APERTURA ATTENZIONE VITARE L ESPOSIZIONE AL FASCI EaD aCTON LASER asta C
30. M4 MS Length 85 mm 9 Flat blade screwdriver CK 0111 10 Precision flat blade screwdriver set CK 0114 6 piece set 11 Allen wrench set CK 0151 S piece set 12 File fine CK 0161 13 Allen hex screwdriver CK 0170 M4 Length 107 mm 14 Diagonal cutting pliers CK 0201 15 Needle nose pliers CK 0202 16 Pliers CK 0203 Applied to the axis ring 17 Retaining ring pliers CK 0205 18 Crimper CK 0218 19 Tweezers CK 0302 Employed to measure 150 mm 20 Ruler CK 0303 21 Soldering iron CK 0309 100V 30 W 22 Mallet plastic head CK 0314 23 Brush CK 0315 24 Penlight CK 0327 25 Plastic bottle CK 0327 100cc 26 Solder CK 0329 1 5 mm dia x 1 mm 27 Desoldering wick CK 0330 1 5mm 28 Lint free paper CK 0336 500SH PKG 29 Oiler CK 0349 30cc 30 Plastic jar CK 0351 30cc 31 Digital multi measure FY9 2032 5 2 2 Special Tools 0005 8817 No special tools are required for this printer besides the standard tools 5 2 3 Solvent Oil List 0005 8820 T 5 2 No Name Use Remarks 1 Alcohol Cleaning plastic note rubber Flammable keep away from flame metal oil and toner stains Purchase locally 2 Lubricating oil Apply between gear and shaft Tool No CK 8003 100 ml bottle 3 Lubricant Apply to gears developing rotary Tool No FY9 6015 unit 20g tube 4 Lubricant Apply to gears Tool No HY9 0007 20g tube A When cleaning the external covers use a firmly squeezed wet cloth Chapter 5
31. Remove the screw 1 and unhook the two claws 2 3 Pull the bottom of the left cover 3 toward you and slide it in the direction of under to remove it F 3 146 3 26 Chapter 3 9 Unhook the claw 1 and remove the link gear 2 10 Remove the link lever 3 from the shaft 4 F 3 147 The enlargement of paper retainer 11 Remove the three screws 1 OK ale F 3 150 F 3 148 12 Remove the screw 1 black and detach the upper cover 2 from 1 Be sure to install the top cover unit with the drive release lever 1 the machine pulled up drive release status and then install the link lever 2 2 When installing the drum cartridge in the printer with the top cover unit removed be sure to do so after pulling up the drive release lever 1 securely drive release status When the lever is pulled down drive status the coupling 2 is pushed out Therefore the shaft of the drum cartridge may hit the coupling and may damage the coupling 1 When attaching the upper cover be sure that you tighten the screw black you removed in step 5 at its correct location 2 When attaching the upper cover be sure that you match the 2 positioning lugs 1 of the upper cover with the 2 notches in the face up auxiliary cover At this time check to make sure that the paper retainer 3 does not block the paper path 3 27 Chapter 3 F 3 152 3 2 15 2 Removing the Video Controller P
32. When the rotary stops the DC controller drives the developing rotary stopper solenoid SL93 to lock the rotary The DC controller monitors the PS51 to determine the stopping position of the rotary It detects the position of the rotary from time for four cartridge flags located on the left side of the rotary to pass the PS51 The four cartridge flags are for detecting the developing positions for each cartridge The DC controller determines a cartridge developing position when these flags interrupt the PS51 and stops the rotation of the DCM703 The flags are used for detecting the removing position for each cartridge also The DC controller rotates the DCM703 for a specified period from the position at where each flag interrupts the PS51 and then stops it This position will be a removing position for each cartridge The DC controller will assume any of the following conditions to be a fault in the developing rotary locking mechanism and will stop the printer engine and at the same time communicate the fact to the video controller 1 The home position detecting flag cannot be detected by PS51 2 A fault exits during the period of detection between flags by PS51 2 19 Chapter 2 DC controller Developing rotary toner level detection circuit Developing rotary home position sensor RHLDSLD Developing rotary stopper solenoid Home position flag Y cartridge flag Photosensitive drum Q M cartridge flag
33. and detach the shield mount 2 3 63 Chapter 3 2 F 3 360 F 3 363 2 Remove the screw 1 and disconnect the connector 2 on the DC 6 Open the face up cover controller PCB J108 Then remove the waste toner detection PCB 7 Unhook the claw 1 and remove the I O cover 2 from the printer 2 from the printer F 3 364 3 4 9 Rotary Drive Unit 8 Unhook the two claws 1 Slide the rear cover 2 downward and remove it 3 4 9 1 Removing the Upper Cover Unit 0007 8492 1 Open the upper cover unit 2 Remove the screw 1 and unhook the two claws 2 3 Pull the bottom of the left cover 3 toward you and slide it in the direction of under to remove it F 3 365 9 Unhook the claw 1 and remove the link gear 2 10 Remove the link lever 3 from the shaft 4 2 F 3 362 4 Remove the screw 1 and unhook the two claws 2 5 Pull the bottom of the right cover 3 toward you and slide it in the direction of the arrow to remove it F 3 366 11 Remove the three screws 1 3 64 Chapter 3 F 3 367 The enlargement of paper retainer 12 Remove the screw 1 black and detach the upper cover 2 from OK iY NG the machine A 1 Be sure to install the top cover unit with the drive release lever 1 pulled up drive release status and then install the link lever 2 2 When installing the drum cartridge in the printer with the top cover A unit removed be sure
34. clutch is on the CPU determines a delivery delay jam t Approx 2 3 seconds 2 5 3 3 Stationary Jams 2 5 3 3 1 Pick up stationary jam 0005 8834 When the trailing edge of paper does not pass the registration sensor PS711 within a specified period t after the start of a re pick up operation the registration clutch is on the CPU determines a pick up stationary jam t Approx 3 4 seconds 2 5 3 3 2 Delivery stationary jam 0005 8839 When the leading edge of paper does not pass the fixing delivery paper sensor PS1 within a specified period t after it has passed the registration sensor PS711 the CPU determines a delivery stationary jam t Approx 2 4 seconds 2 5 3 4 Other Jams 2 5 3 4 1 Fixing unit wrapping jam 0005 8835 CPU detects fixing unit wrapping jam when there are any print papers inside the fixing front paper sensor when turning on the power or after closing the upper cover 2 37 Chapter 2 2 5 3 4 2 Door open jam 0005 8840 When the top cover is opened during a print operation the main CPU determines a door open jam 2 5 3 4 3 Residual paper jam 0005 8842 The CPU determines a residual paper jam under the following conditions Power is turned on Returned from the sleep status Door is closed after a jam occurrence Registration sensor PS711 and fixing delivery sensor PS1 detect paper 2 5 4 Multi purpose Pickup 2 5 4 1 Multi purpose tray pick up 0005 8808 When printing fr
35. drive release lever 1 e pulled up drive release status and then install the link lever 2 2 When installing the drum cartridge in the printer with the top cover F 3 301 unit removed be sure to do so after pulling up the drive release lever 1 securely drive release status When the lever is pulled down 3 4 5 3 Removing the Video Controller PCB drive status the coupling 2 is pushed out Therefore the shaft of the drum cartridge may hit the coupling and may damage the coupling 3 54 0007 8632 1 Remove the seven screws 1 and detach the shield cover MA a a 74 yO Y 7 M y WM Y 1 ne F 3 302 2 Remove the four screws 1 and disconnect the three connectors 2 then detach the interface connector PCB 3 from the machine F 3 299 Chapter 3 3 F 3 303 If you have replaced the video controller PCB be sure to go through the following 1 Execute PWM adjustment in service mode 2 Remove the existing EEPROM IC6 and mount it to the new PCB 3 4 5 4 Removing the Front Cover Unit 0007 8633 1 Unhook the two claws 2 holding the multi purpose tray 1 2 Slide the front cover unit 3 to the left Pull out the front cover unit to the right and remove it off the printer F 3 304 3 4 5 5 Removing the Main Drive Unit 0007 8634 1 Remove the 2 screws 1 and detach the control panel mount 2 2 F 3 305 2 Remove the 6 screw
36. ec eG ee AAA ANA 2 42 2 8 ENGINE CONTROL SYSTEM aa a a a Aea a E ET e E a A aaa aaa a a eA aaaea 2 43 2 8 1 GOMSUIUCTION RN 2 43 PEOI it AE AA E E O EENE E O AAE 2 43 28 2 16 COMMON CR tii iaa isis 2 43 LN ee ed lorena erroneo lll LEILA 2 43 DEDO POMO ui A dive HET NEE A e A des tere AE ADA E teal trete Geen 2 44 2 8 2 3 Motor fan control smart 2 45 2 8 2 4 Main motor COM iii 2 45 28 2 Developing rotary motor control ici eee ee aes ee a Rain ira 2 46 2 8 2 6 COOLING Tania A Gia A ee aed eee a ced a cae ate Ge 2 48 28 3 Interface Controller E A A aaa Zeid ae ded ee chad da lee ode dd 2 48 23 Sel ULI Fre re ene cant E E gt E ater Sie nana earns Gh aca UT 2 48 2 8 3 2 Operation of the Blocs ae nenne 2 49 2 8 3 3 Canon Advanced Printing TechnologyA CAPT s sscscsssssssssessussssecesesscsesssssssesesasasssssnasesasasasasssasisuasasssasacsessesseeaeaeeeaees 2 50 Chapter 3 DISASSEMBLY AND ASSEMBLY 3 1 Before Parts Repa eMe Ai a e a a aea a A aaa a aaa aa a aa e a ena a ir aeia nenn 3 1 3 1 1 Cartridge Removal at Trouble Eruption 24442444nn nenn snnnnnnnnennnnnnnnnnnnnnnnnnnnnnnnnn nenne ennnnnnnnnnennnnennnsnnnn nenn nnnnnnn ran 3 1 3 1 2 Toner Cartridge removal 2 2 an dis 3 1 3 1 3 Drum cartridge TeMOVAl 4 re een an ea da de 3 2 3 2 EXTERNAL AND CONTROLS SYSTEM 242444ssssnnnennsnensnnnnnnnnnnnnnannnnnnnnnnnennennennnnnannannnnnrnnr nennen 3 3 3 2 REAL A A O O
37. eee hea 3 47 3 4 3 2 Removing the Rotary Drive Unit easair anada ae Eee 3 49 3 4 3 3 Removing the Developing Rotary Motor 24044444400nssnennsnnnnnnnnnnnnnnnnennnnnnnnnnnnnnnnsnnnnnnnnnnnnnnnnnnsnnnnnnnnnnnnnnnnnnnr nn 3 49 3 4 4 Developing Rotary Stopper Solenoid 22 eosecers 20m 3 50 3 4 4 1 Removing the Upper Cover Unit 20uss22400sssnnnnssnnnnnnnnnnnnnnnnnnnnnnnonnnnnnnnnnnnennnnnnnnnnnnennnnnnnnnnnennnnnnnnnnnsnnnnnnsnnnnnnnnnnnnnn nn 3 50 3442 Removing Rotary Drive Unit ee aeons eta eee 3 51 3 4 4 3 Removing the Toner Cartridge Motor 244444444004224000nannnnnnnnnnnannnnnnannnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnannnnnannnnnnnnnnnnnn 3 52 3 4 4 4 Removing the Developing Rotary Stopper SOICnOid cccccccceeeeeeeceneeeeeeeeeeeceaeeeeeeaeeeeeaeeeeseaeeeseeaeeeseaeeeseneeesseeeeseneeeeseaes 3 52 3 4 5 Developing Rotary Toner Level Detection POB uusessssnnnneenssnnnnennnnennnnnnnnnnnnn nennen nnnnnnnnnn en atun nanan nna ern 3 52 3 4 5 1 Removing the Upper Cover Unit coooconococoniccccnnoccccononcccnnnncnonon cn nono cnn RR RR Ran rra r rr ran narran 3 52 3 4 5 2 Removing the G ntroliPanel 2 2 2222 adidas 3 54 3 4 5 3 Removing the Video Controller PCB 4404224004snnsnsnnnnonnnnnnnnnnnnennnnnnennnnnnnnnnnnnnnnnnnnnnnnsnnnnnsnnnnnnnnnnnnnsnnnnnnnnnnnnnn nn 3 54 3454 Removing the Front Cover Unit 2 22 22 ei a ete ee
38. eft COVER sn cs es a a ea a aia 3 54 3 ReMoving the Front Cover Unit iii A A eee t 3 5 4 4 Removing the Separation Pad 244s424400nsnnnnnnnnnennnnnnnnnnnnnonnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnsnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnannn nn 3 5 5 Registration Detection PCB 3 5 5 1 Removing the Upper Cover Unit 8 5 5 2 Removing the Control Panel cis ikea ala Gaal ai Gain cA GA ees eee ae 3 5 5 3 Removing the Video Controller PCB cceccccccesscecseseeeeeeeceeeeaaeeeceaaeeeseaeeeesaaeesaaeeeeaaeeeeesaaeeeeeaeesscaeeesecaeeeseeeeeeseeeesssneeessaaees 3 79 3 5 5 4 Removing the Registration Detection PCB ooooocconcccccnoccccnoccccnnnoncononcccnnonnconnnnncnnnnncn aran cnn nan cnn nn nc naar enn enn rre n rara nnr rca 3 80 3 5 6 Registration Roller Units een engeren 3 80 3 5 6 Removing the Upper Cover Unit oo A Bun ae ele ene 3 80 3 5 6 2 Removing the Control Panel visi an ee aa eG ai ot eee ede a ae ee ieee a 3 82 3 5 6 3 Removing the Video Controller PCB 2 2 2 Ra ee eel 3 82 8 5 64 Removing the Front Cover Unit ii tad scars ea iain io eee ere Aa ee nee eens 3 82 3 5 6 5 Removing the Main Drive Unit 2a em al ha che eee lth Dba ie 3 82 Contents 3 5 6 6 Removing the Registration Shutter UNit oooonocccinnccconoccccnnocccnononnnconcononncn nono ncn conocio naar n nana n nn rra n cren nr rn nr n rene n rr narran 3 84 3 5 6 7 Removing the Registration Roller Unit
39. en LS nn nn nes hie ine od dede 1 3 1 4 Name Of Parts cia dd eis ib tt arenes 1 5 1 4 1 External View ana san ee Add At dde 1 5 1 4 2 Gross Sectional Vie Wi ss 1 6 LAMA a tenes needs dest redete 1 7 1 4 4 Main Parts ani ias 1 7 1 5 Using the Machine ais 1 9 SACO PANE ges cexe as 1 9 RS E O TO 1 10 1 6 1 Safety of the Laser Light een a aani a nissen 1 10 1 6 2 Regulations Under the Center for Devices and Radiological Health CDRH 224444444044H nn nennen nennen 1 10 SA N E E E E ET 1 10 1 6 4 Handling the Laser Unit 2 en eiieeii aeeie eiei ia e iiaiai tede iaioe deekie ee aan he daten ie iaoei 1 10 1 6 5 Safety of Power SUPPLY u mens arena nennen sit gceegdecewedaeneebedesactedenereeree 1 11 Chapter 2 TECHNICAL REFERENCE 2 1 Functional Configuration dados 2 1 2 1 1 Outline 2 2 EE A A tt eevee 2 1 2 2 BaSsic Sseqlense n 2 um A A fee aad radar IA 2 2 221 Basic Operation SCQUENCO aca As ariel 2 2 22 2 POWEI ON SCQUCTICE iaa a da vd zee acces Jechiel hat iin eae take 2 2 23 LASER EXPOSURE S YS EM iu ee needs dicate e a iaae 2 4 2 3 1 Overview Configuration miissen nea eer NA T RA E EAE EEE Eaa A Ea ea Ea a E a i 2 4 Qe SAT OUTING u a aa a e a aa E A E A e LA te geld EIER ad else ee iene 2 4 23 2 Laser Control icre i ae A a eet 2 5 PERO a A A A E E TREE EE E 2 5 2 3 2 2 L ser emission conlfol r e aai i a a a aaa 2 5 2 3 2 3 Automatic power control APC A 2 2 ea Wada
40. increasing the speed perforance and reducing the cost 5 High Speed Color Printing LBP2410 Itis a high speed color printer capable of turning out about 4 prints per min A4 LTR in full color or about 16 prints per min A4 LTR in mono color LBP5200 It is a high speed color printer capable of turning out 4 prints per min in full color or about 19 A4 prints per min or about 20 LTR prints per min in mono color 6 Printing in Full Color on Transparencies LBP5200 The machine uses a rubber fixing sleeve and thus provides a higher toner fixing rate The fact has increased the degree of light transmission through layers of toner enabling full color printing on transparencies 1 1 2 Difference in Specifications 0007 9157 In terms of specifications the LBP2410 and LBP5200 differ as follows T 1 1 Item LBP 2410 LBP5200 Printing speed 16 prints min approx A4 LTR 19 prints min approx A4 20 prints min mono color print LTR Color toner cartridge 4 000 prints A4 single sided image ratio of 2 000 prints 4 single sided image ratio of yield cartridge in 5 5 shipping box External cover color Cream white Titanium white Fixing assembly type Film sleeve assembly Rubber sleeve assembly 250 sheet paper Available as option Available as standard in Japan feeder 1 1 Chapter 1 1 2 System construction 1 2 1 System Configuration 0007 6282 The machine may be configured as
41. is cleaned from the drum to prepare for the next print operation The residual toner on the drum is scraped away with the cleaning blade The removed toner is collected with the waste toner screws into the waste toner case This allows the drum surface to be cleaned 2 14 Chapter 2 Drum cartridge Waste toner transport plate j Residual toner DV DAL Stirrer Waste toner case Patente drum F 2 22 2 4 2 High Voltage Control 2 4 2 1 Outline 0007 9291 The image formation system which serves as the nerve center of the printer forms a toner image on paper It consists of a developing cylinder four toner cartridges containing toner a drum cartridge containing the ITB photosensitive drum etc a developing rotary storing the toner cartridges and a fixing unit etc These parts are controlled by the DC controller After receiving a print command from the interface controller the DC controller controls the developing rotary laser scanner unit high voltage power supply circuit to form an image based on the VIDEO signals on paper The toner cartridges and drum cartridge come with built in memory tags that store cartridge usage condition information etc The DC controller performs reading and writing 2 15 Chapter 2 Photosensitive _ drum Primary charging roller Zu Ae IB VL s Primary transfer is Developing rotary roller BEN WERE Secondary re
42. loads 2 22 Chapter 2 DC control c wo O 35 EL E ag og Cw 20 o Es ogv g Zw 2 Developing rotary 2 Q 3 toner level detection circuit O go 5 53 z e EP 87 Toner cartridge motor Engaging notary pera engaging sensor Y N Memory tag ri a contact Photosensitive rum Toner level sensor dru light emitter Developin linder Toner level sensor eveloping cylinde light receiver F 2 29 This toner cartridge is structured with a developing cylinder and stirrer The toner cartridge motor rotates these parts The memory tag is installed in each cartridge The engaging motor rotates as required to operate the memory tag contact cam This allows the memory tag contact on the printer side and that on the cartridge side to contact each other and enables the DC controller to communicate with each toner cartridge Toner level detection is performed with an LED light emitter and a photodiode light receiver on the developing rotary toner level detection circuit The functions and controls that the cartridge have are described next 2 4 5 2 Memory tag 0005 8728 The memory tag is a non volatile memory built into the toner cartridge It stores cartridge usage condition data The DC controller reads and writes memory data constantly to detect the usage conditions of each toner cartridge The DC controller reads and writes to the memory tag through the memory tag contacts
43. motors and two stepping motors One of the three DC motors is used for image formation the second one for image formation and paper feed and the third one as a fan motor to avoid a temperature rise in the printer Two of the three stepping motors are used for image formation and the other for paper feed Since the printer transfers toner in four colors onto the same areas on the ITB subtle changes in motor speed may result in color misregistration The DC motors used for image formation are controlled high precisely for rev fluctuations caused by loads The specifications of motors used in this printer are listed T 2 5 Name Purpose Type Rotational Speed Failure direction detection Main motor Drives the multi DC CW 3 speed Yes DCM701 purpose tray pick up motor full 1 2 1 4 roller registration roller photosensitive drum secondary transfer roller ITB feed belt and waste toner screws and moves the lifting plate up and down Developing Drives the developing DC CW 1 speed Yes rotary motor rotary motor DCM703 Fixing motor Drives the pressure DC CW 3 speed Yes DCM702 roller and facedown motor full 1 2 1 4 tray delivery roller Engaging Engages the photo Stepping CW CCW 1 speed No motor sensitive drum and motor PM704 developing cylinder and the memory tag contacts on the toner cartridge side and printer side Toner cartridge Drives the developing Stepping CW 1 speed No motor cy
44. name F 5 4 1 Durables Information You can check the counter readings of individual cartriges Y M C K toner and drum cartridges which are offered as consumables of the machine The counter readings of the M toner cartridge and the drum cartridge however do not necessarily indicate the number of prints actually made Be sure to make use of the readings of these 2 counters only as a guide to how long these parts have been in use 2 Service Specific Settings You can set the various bias levels These settings are used in the event of a fault in the field Do not change the various bias values unless doing so is be absolutely necessary 3 PWM Adjustment You can execute PWM adjustment for correction of variations that may exist among laser scanner assemblies This adjustment will automatically start up when PWM adjustment is selected from a pull down menu after the machine has entered service mode it ends in about 5 sec 5 4 1 2 Starting Service Mode 0005 8833 To start service mode bring up the dialog box Printer of the PC to which the printer s software has been installed then enter the appropriate ID Specifically go through the following steps 1 Select Canon LASER SHOT LBP 2410 or Canon LBP5200 then select Properties if for Windows 98 Me or Print Setup if for Windows 2000 XP 2 From Page Setup select Display Printer Status Window 3 From the keyboard of the PC press the following keys in seque
45. of the PS 714 When the output becomes L it lets out the CL2 This allows the cam to stop and the two rollers to stop at each home position Then it is ready for the next print operation A Note 1 The home positions of each roller are positions at where the rollers are disengaged from the ITB by the roller bushing Note 2 The operation of the engaging cam used in this control is also used in the secondary transfer roller engaging control 2 26 Chapter 2 DC controller Main motor ITB cleaning roller Auxiliary ITB cleaning roller Engaging cam Bushing ITB cleaning roller Auxiliary ITB cleaning Engaging cam roller lt Disengaging gt lt Engaging gt F 2 34 2 4 6 3 Memory tag 0005 8755 The memory tag is a non volatile memory built into the drum cartridge It stores cartridge usage condition data The DC controller detects drum cartridge usage conditions by reading and writing memory data A memory tag in the drum cartridge contacts with the memory tag contact constantly when the cartridge is installed in the printer After receiving memory data from the memory tag through the memory tag contact the DC controller updates data with specified timing and rewrites it to the memory tag The DC controller instructs the memory tag to read or write under the following conditions lt Read gt Power is turned on Top cover is closed lt Write gt After 50 papers printing When a Chan
46. pattern data is sent to the printer 3 decompresses compressed image data b CPU 1C2 It has the following primary functions 1 processes the serial commands of the video interface 2 sends and receives CAPT commands through the USB interface 3 controls the control panel interface c RAM IC3 The RAM possesses 8 MB of memory for storage of the following contents 1 It stores dot matrix data converted from image data reception buffer d PWM IC IC4 It puts image data from ASIC through pulse width modulation for conversion e USB Controller IC IC5 It controls the USB interface f EEPROM IC6 lt J103 gt 0005 8814 It is a 64K bit memory capable of deleting data or writing new data electrically and is used for storage of the printer s permanent parameters e g printing environment which are retained even after the power has been turned off g Reset IC IC9 IC105 monitors 3 3 V and resets the CPU and ASIC when the power is turned on 2 49 Chapter 2 Expansion I F connector EEPROM J105 IC6 Panel I F connector 4104 USB controller Video I F IC5 connector J103 D PWM IC USB I F 1C4 connector 4101 Power supply I F connector 4102 1 Reset IC IC9 IC3 F 2 54 2 8 3 3 Canon Advanced Printing TechnologyA CAPT 0007 6028 The term Canon Advanced Printing Technology hereafter CAPT refers to a system of processing data in which printing
47. print command from the video controller until the ITB HOME POSITION DETECTION HP1 signal for the first color is detected To stabilize sensitivity of the photosensitive drum in preparation for printing PRINT Print From the end of the INTR period until the ITB home position for the secondary transfer is detected To form an image on the photosensitive drum based on the VIDEO signal input from the video controller and transfer a toner image to the ITB LSTR Last rotation From the end of a print operation until the main motor stops its rotation To transfer secondarily a toner image on the ITB to a paper and then delivers outpaper with toner fixed on Instant a print command is input from the interface controller the initial rotation starts 2 2 2 Power on sequence 0005 8577 The power on sequence is the first operation executed by loads based on the firmware previously stored in the printer It is indicated in the flowchart below The power on sequence is executed from when the power is turned on until the printer enters the standby status 2 2 Chapter 2 CPU initialization ASIC initialization Video interface communication ready Video interface communication start Printer ID check Motor initial drive Main motor Toner cartridge motor Developing rotary motor Fixing motor Engaging motor Memory tag for toner cartridges dru
48. screw black you removed in step 5 at its correct location 2 When attaching the upper cover be sure that you match the 2 positioning lugs 1 of the upper cover with the 2 notches in the face up auxiliary cover At this time check to make sure that the paper retainer 3 does not block the paper path F 3 225 9 Unhook the claw 1 and remove the link gear 2 10 Remove the link lever 3 from the shaft 4 F 3 226 11 Remove the three screws 1 3 42 Chapter 3 The enlargement of paper retainer 3 4 2 2 Removing the Control Panel 0007 8502 1 Free the claw 1 and disconnect the connector 2 then detach the control panel for the machine F 3 229 A Be sure to install the top cover unit with the drive release lever 1 pulled up drive release status and then install the link lever 2 2 When installing the drum cartridge in the printer with the top cover F 3 232 unit removed be sure to do so after pulling up the drive release lever 1 securely drive release status When the lever is pulled down drive status the coupling 2 is pushed out Therefore the shaft of the drum cartridge may hit the coupling and may damage the coupling 3 4 2 3 Removing the Video Controller PCB 0007 8503 1 Remove the seven screws 1 and detach the shield cover F 3 233 2 Remove the four screws 1 and disconnect the three connectors 2 then detach the interface con
49. sensitive roller Developing N Geum L Image cartridge rotary W Fixing unit _ A a gt Ma A e 7 es Secondary transfer roller ITB Auxiliary cleaning ITB cleaning roller roller DC controller lt H V T VIDEO signal Print command Video controller 2 4 1 2 Image Formation Process 0005 8886 An image formation process is the basic procedures of operations for image formation The process can be divided into 5 blocks and 12 steps By performing steps in each block a toner image is formed on paper The following are the blocks and steps of the image formation process 2 8 Chapter 2 2 Developing _____F Photosensitive block Auxillary development ____ 9 Auxiliary ITB cleaning roller charging Registration Multi purpose tray pick up Paper path Directions of rotation F 2 9 1 Electrostatic latent image formation block Forms an electrostatic latent image on the photosensitive drum Step 1 Primary charging A uniform negative charge is applied onto the surface of the drum Step 2 Laser beam exposure An electrostatic latent image is formed on the drum 2 Developing block Turns an electrostatic latent image on the drum to a visible image by applying the toner onto it Step 3 Auxiliary development Step 4 Development 3 Transfer block Transfers a toner image on the drum on paper Step 5 P
50. sheets to prevent an internal temperature rise If the temperature goes below the temperature floor Tu the DC controller returns the space between sheets to normal TH3 temperature Td 50 Tu 45 s nyessedus EH gt 0 30 60 Print time minutes gt F 2 44 2 5 3 Detecting Jams 2 5 3 1 Jam Detection Outline 2 5 3 1 1 Outline 0005 8829 To detect the presence of paper and whether paper has been correctly fed the following paper sensors are provided Registration sensor PS711 Fixing delivery paper sensor PS1 Fixing front paper sensor PS720 The CPU in the DC controller determines whether a paper jam has occurred by checking for the presence of paper at the sensor unit at the timing stored in the CPU If the CPU determines a jam it stops a print operation and notifies the jam occurrence to the video controller Occurrence timings for each jam are listed below A specified period is timed at a normal speed 1 1 speed 2 5 3 2 Delay Jams 2 5 3 2 1 Pick up delay jam 0005 8831 When the leading edge of paper does not reach the registration sensor PS711 within a specified period t after the start of a pick up operation the CPU determines a pick up delay jam t Approx 1 1 seconds 2 5 3 2 2 Delivery delay jam 0005 8838 When the leading edge of paper does not reach the fixing delivery paper sensor PS1 within a specified period t after the start of a re pick up operation the registration
51. speed is reduced and operation is made easier for more user friendly printing in a Microsoft Windows environment In CAPT the following takes place so as to generate output as fast and as easily as possible Instead of converting the print data coming from the application into the printer s page description language PDL it turns it into resource data which is GDI compatible It turns the resulting GDI compatible source data into dot matrix data on the host computer and sends the result to the host computer It allows making selections to set up a printing environment using dialog boxes on the host computer GDI data from application Host computer Converts data into GDI Compatible resource data Canon Advanced Printing Technology Analyzes resource data and develops it into print data Creates bitmap image Monitors state of printer y t Host computer interface Displays on screen Printer interface y t Engine Printer status information y Printing Printer F 2 55 Itindicates the status of the printer on the screen of the host computer enabling a check on the end of printing feed of print paper and error status using the host computer screen A Graphics Device Interface GDI It is a graphics drawing system of processing data that prints or displays images in a Windows environment or an interface of a graphi
52. sure to install the top cover unit with the drive release lever 1 e pulled up drive release status and then install the link lever 2 2 When installing the drum cartridge in the printer with the top cover F 3 62 unit removed be sure to do so after pulling up the drive release lever 1 securely drive release status When the lever is pulled down 3 2 9 3 Removing the Video Controller PCB drive status the coupling 2 is pushed out Therefore the shaft of the drum cartridge may hit the coupling and may damage the coupling 3 12 0007 8200 1 Remove the seven screws 1 and detach the shield cover MA a a 74 yO Y 7 M y WM Y 1 ne F 3 63 2 Remove the four screws 1 and disconnect the three connectors 2 then detach the interface connector PCB 3 from the machine Chapter 3 3 F 3 64 If you have replaced the video controller PCB be sure to go through the following 1 Execute PWM adjustment in service mode 2 Remove the existing EEPROM IC6 and mount it to the new PCB 3 2 9 4 Removing the Front Cover Unit 0007 8201 1 Unhook the two claws 2 holding the multi purpose tray 1 2 Slide the front cover unit 3 to the left Pull out the front cover unit to the right and remove it off the printer F 3 65 3 2 9 5 Removing the Main Drive Unit 0007 8202 1 Remove the 2 screws 1 and detach the control panel mount 2 2 F 3 6
53. the MOTOR DRIVE signal to the DCM703 based on the two signals In parallel with it the CPU monitors the DEVELOPING ROTARY HOME POSITION DETECTION ROTHPS signal There is a home position flag located on the developing rotary It interrupts the sensor PS51 as the rotary rotates This allows the ROTHPS signal to output L The CPU monitors the two ENCODER DETECTION ENCSNS1 ENCSNS2 signals output from the encoder Note of the DCM703 when the output of the ROTHPS becomes H It detects motor speed from a time difference between the ENCSNS1 and ENCSNS2 signals It controls the output of the ROTMPWM signal to adjust the revs of the DCM703 to a specified value The CPU determines a developing rotary motor failure then stops the printer engine and notifies the failure to the video controller under the following conditions 1 When the CPU cannot detect ENCODER DETECTION signal within 5 seconds after the start of the developing rotary motor drive 2 When the pulse count for ENCODER DETECTION signal does not fit in the prescribed range within 200 of a targeted pulse count memorized by CPU after a period of time from the start of the drive when the developing rotary motor becomes Ready A The encoder used in this printer consists of a disk reflective sensor and detection unit The disk is installed on the motor shaft The disk rotates as the motor does The disk has reflective areas and interrupting areas alternately located on its s
54. the link gear 2 10 Remove the link lever 3 from the shaft 4 F 3 333 4 Remove the screw 1 and unhook the two claws 2 5 Pull the bottom of the right cover 3 toward you and slide it in the direction of the arrow to remove it F 3 337 11 Remove the three screws 1 3 59 Chapter 3 F 3 338 12 Remove the screw 1 black and detach the upper cover 2 from the machine The enlargement of paper retainer OK F 3 340 A 1 Be sure to install the top cover unit with the drive release lever 1 pulled up drive release status and then install the link lever 2 2 When installing the drum cartridge in the printer with the top cover unit removed be sure to do so after pulling up the drive release lever 1 When attaching the upper cover be sure that you tighten the screw 1 securely drive release status When the lever is pulled down black you removed in step 5 at its correct location drive status the coupling 2 is pushed out Therefore the shaft of 2 When attaching the upper cover be sure that you match the 2 the drum cartridge may hit the coupling and may damage the positioning lugs 1 of the upper cover with the 2 notches in the face coupling up auxiliary cover At this time check to make sure that the paper retainer 3 does not block the paper path See e Y yO e pupp y M Y F 3 341 3 60 Chapter 3 A The self tapping scre
55. the registration detection PCB 2 3 80 Chapter 3 F 3 464 8 Unhook the two claws 1 Slide the rear cover 2 downward and remove it in A 1 When attaching the upper cover be sure that you tighten the screw black you removed in step 5 at its correct location 2 When attaching the upper cover be sure that you match the 2 positioning lugs 1 of the upper cover with the 2 notches in the face up auxiliary cover At this time check to make sure that the paper retainer 3 does not block the paper path F 3 465 9 Unhook the claw 1 and remove the link gear 2 10 Remove the link lever 3 from the shaft 4 The enlargement of paper retainer NG F 3 466 11 Remove the three screws 1 A Be sure to install the top cover unit with the drive release lever 1 pulled up drive release status and then install the link lever 2 2 When installing the drum cartridge in the printer with the top cover unit removed be sure to do so after pulling up the drive release lever 1 securely drive release status When the lever is pulled down drive status the coupling 2 is pushed out Therefore the shaft of the drum cartridge may hit the coupling and may damage the F 3 467 coupling e 12 Remove the screw 1 black and detach the upper cover 2 from the machine 3 81 Chapter 3 yO Y e W y WM E F 3 473 2 Remove the four scre
56. the screw 2 Remove the multi purpose tray pick up solenoid 3 3 5 4 Manual Separation Pad 3 5 4 1 Removing the Pick up Roller Protect Cover 0007 8990 1 Open the front cover unit 2 Unhook the claw 1 Remove the pick up roller protect cover 2 It F 3 443 3 5 4 2 Removing the Left Cover 0007 8991 1 Open the upper cover unit 2 Remove the screw 1 and unhook the two claws 2 3 Pull the bottom of the left cover 3 toward you and slide it in the direction of under to remove it 2 F 3 444 3 5 4 3 Removing the Front Cover Unit 0007 8987 1 Unhook the two claws 2 holding the multi purpose tray 1 2 Slide the front cover unit 3 to the left Pull out the front cover unit to the right and remove it off the printer izza F 3 445 3 5 4 4 Removing the Separation Pad 0005 8858 1 Remove the screw 1 and the separation pad 2 3 77 Chapter 3 F 3 446 A When installing the separation pad do not touch the pad 3 5 5 Registration Detection PCB 3 5 5 1 Removing the Upper Cover Unit 0007 8994 1 Open the upper cover unit 2 Remove the screw 1 and unhook the two claws 2 3 Pull the bottom of the left cover 3 toward you and slide it in the direction of under to remove it Y B gt Ser 2 F 3 447 4 Remove the screw 1 and unhook the two claws 2 5 Pull the bottom of the right cover 3 toward you and slide it in the direction of th
57. the two claws 1 Slide the rear cover 2 downward and remove it 3 39 Chapter 3 1 When attaching the upper cover be sure that you tighten the screw black you removed in step 5 at its correct location _L 2 When attaching the upper cover be sure that you match the 2 A e 1 positioning lugs 1 of the upper cover with the 2 notches in the face Ber N up auxiliary cover At this time check to make sure that the paper mS S y retainer 3 does not block the paper path AA e E yO r Ir The enlargement of paper retainer OK NG F 3 213 A Be sure to install the top cover unit with the drive release lever 1 pulled up drive release status and then install the link lever 2 3 4 1 2 Removing the Video Controller PCB 2 When installing the drum cartridge in the printer with the top cover unit removed be sure to do so after pulling up the drive release lever 1 securely drive release status When the lever is pulled down drive status the coupling 2 is pushed out Therefore the shaft of the drum cartridge may hit the coupling and may damage the coupling he 0007 8581 1 Remove the seven screws 1 and detach the shield cover F 3 216 2 Remove the four screws 1 and disconnect the three connectors 2 then detach the interface connector PCB 3 from the machine 3 40 Chapter 3 3 F 3 217 If you have replaced the video co
58. to do so after pulling up the drive release lever 1 securely drive release status When the lever is pulled down drive status the coupling 2 is pushed out Therefore the shaft of the drum cartridge may hit the coupling and may damage the coupling 1 When attaching the upper cover be sure that you tighten the screw black you removed in step 5 at its correct location 2 When attaching the upper cover be sure that you match the 2 positioning lugs 1 of the upper cover with the 2 notches in the face up auxiliary cover At this time check to make sure that the paper retainer 3 does not block the paper path 3 65 Chapter 3 F 3 374 3 4 9 2 Removing the Video Controller PCB 2 Disconnect the four connectors 1 0007 8497 1 Remove the seven screws 1 and detach the shield cover F 3 372 2 Remove the four screws 1 and disconnect the three connectors 2 then detach the interface connector PCB 3 from the machine 3 F 3 376 A The self tapping screw 1 used for installing the rotary drive unit F 3 373 must be screwed the last If you have replaced the video controller PCB be sure to go through the following 1 Execute PWM adjustment in service mode 2 Remove the existing EEPROM IC6 and mount it to the new PCB 3 4 1 Remove the 6 screws 1 and detach the shield mount 2 3 66 9 3 Removing the Rotary Drive Unit 0005 8799 F 3 37
59. user connects lighting apparatuses to the power supply to which the power connector is connected the current flowing into theA heater increases This decreases the voltage level of the AC line and results in flicker To prevent flicker the printer utilizes a zero cross circuit that monitors the AC line voltage The CPU detects ZERO CROSS DETECTION ZEROX signal to optimize the timing to energize the heater 2 6 3 2 Protective function 0007 9312 This function detects an abnormal temperature rise of the heater and shuts the heater off This printer utilizes three protective functions performed by the following parts to prevent an abnormal temperature rise of the heater 1 CPU 2 Fixing heater safety circuit 3 Thermoswitch Each protective function will be discussed in the following 1 Protective function by the CPU The CPU monitors the output voltages FSRTH1 FSRTH2 of the main sub thermistors If the FSRTHI is approx 0 77 V or less equivalent to 245 deg C or higher or the FSRTH2 is approx 2 9 V or higher equivalent to 290 deg C or higher the CPU determines a fixing unit failure and executes the following 1 Sets the FIXING HEATER DRIVE FSRD signal L through the ASIC and shuts off the heater 2 40 Chapter 2 2 Sets the RELAY DRIVE RLD signal L through the ASIC 3 Sets the RELAY DRIVE RLD signal L through the fixing heater safety circuit 4 Turns off the relay RL301 through the relay drive circuit and s
60. 1 transfer AC roller Auxiliary ITB cleaning roller far OT SY 9 a he E E ITB cleaning high Primary transfer Primary charging voltage generation high voltage high voltage circuit generation circuit generation circuit Secondary transfer high voltage generation circuit High voltage power supply circuit Sub high voltage power 1 Supply circuit 1 2 4 2 2 Primary charging bias generation 0005 8731 The primary charging bias is output to apply uniformed negative potential to the photosensitive drum surface as a preparation for image formation Two kinds of the biases DC negative bias and AC bias are generated in the primary charging high voltage generation circuit in the high voltage power supply circuit These two biases are applied together to the primary charging roller in the drum cartridge with a specified timing The values of the DC negative bias vary interlocked with the developing bias according to image density information sent from the video controller Auxiliary developing bias is output to charge toner that was not charged by friction The printer s auxiliary developing bias is DC minus bias generated at auxiliary developing bias generation circuit inside high voltage printed circuit board Auxiliary developing bias is applied onto the blade in the toner cartridge at a specified timing 2 4 2 3 Developing bias generation 0005 8732 The developing bias is output to adhere tone
61. 1 Basic Operation Sequence iissa iesenii eoi S Anar E EOE r ENAA SEESE ARESE EPE OSEA EASA SAOSA SEEN 2 2 2 2 2 Power on sequence s s s 2 2 23 LASER EXPOSURE SYST M riada la E 2 4 2351 Ov rview ConfigUr iO uscar tii s ei aE ea arata opaa aeae e a are r OE Salana SaS oE EEEE 2 4 Dy Bed F Outline iaa 2 3 2 Laser Control a 2 3 2 L Outline a AO OR iin areini eign PA POPA ENTA ATSA O e eae eae Sean ee EE Cas cial scaly alte ante E 2 5 2 3 2 3 Automatic power control APE vce isi esters cust rar ia 2 6 2 3 2 4 Horizontal synchronous Comte oi a in 2 6 2 3 2 5 Image mask control 2 6 2 3 2 0 easer failure detection san AS A AA 2 7 23 3 Laser Scanner Motor Control omiso ed eae e ld il idilio 2 7 2 3 3 1 Outline ns 2 7 2 3 3 Z 9 C nner MOTOT Speed conto lsc oss seasesceevestdvestscucseestscssscevesd vaca ches sgh ceaseescassassa edevessansvencese a E aaa E EE aA EE ca spaseeesvseesseseesers 2 7 2 3 3 3 Scanner motor failure detecti ssena sessed ces r ages BBEIa aa 2 7 2 4 IMAGE FORMATION SYSTEM 2 8 2 4 1 Overview Configuration c cccccesceescescesceecessseescesccsecsecssessessesesesescescessescesccaecaeceeceecssessecseceecaseaseaseasessesseseeseceaceaceaceeeeeeeseseees 2 8 DA A iia 2 8 2 4 1 2 Image Formation Process 2 8 24 1 3 Electrostatic l tent image formation bilis 2 9 2A TA Developing block A e 2 10 DA Ned EIE A E Do I RI EENEEEDEISROD EIER er nelrssen 2 11 2 431 6 Eixin8 block nase les een RO RN RN ONO NN 2 1
62. 1 Removing the Upper Cover Uni 3 2 16 2 Removing the Door Open Detection WILL 3 30 32217 Cooling A RON TN 3 2 17 1 Removing the Upper Cover Ut Here au ru m UND Es nes 3 21 72 Removins the Cooling Fane A E A G E E 3 2 18 Internal Temperature Detection Thermistor 3 2 18 1 Removing the Upper Cover Unit 3 2 18 2 Removing the Video Controller PCB 3 2 18 3 Removing the Internal Temperature Detection Thermistor eesesssesesesnenenennenenennenenenennenenennennnenonnenenonnenenenennennnenennenenaneenennenennann 3 34 3 3 LASER EXPOSURE SYSTEM nimodo sans nenn Bun u 3 3 1 Laser Scanner Unit 3 3 1 1 Removing the Upper Cover Unit 3 39 12 Removing the Laset Scanner Umt 2 22 2822 A A A a 3 37 IF IMAGE FORMATION SYSTEM cti is 3 39 3 4 1 Dr m Cartridge Memory Tag Contact sde ddr 3 39 341 1 Removing the Upper Cover Ulla iia 3 39 3 4 1 2 Removing the Video Controller PCB s s sscsscssesesssoctessesdsascascesdaasastuteastsseveanuasasiessadecesotsnusseeeessdeteosdetsesasdauesuazasedaaeddosact adda Ee ESEAS UEa Ree 3 40 3 4 1 3 Removing the Drum Cartridge Memory Tag Contact euesesssesessnenenennenenennenenenennenenennenenenennenenennenenennnenenannsnennnonennnenennenenennnenenneenanann 3 41 34 2 Developing Rotary Unit a essen ein son Innen ansehen des des des ocios 3 41 3 42 Removing the Upper Cover Utd 3 41 3 4 22 Removingithe Control Panel ix tera AA ANA 3 43 34 2 3 Rem
63. 2 2 7S 1 3 F 3 430 3 5 3 5 Removing the Main Drive Unit 0007 8986 1 Remove the 2 screws 1 and detach the control panel mount 2 F 3 431 2 Remove the 6 screws 1 and detach the shield mount 2 3 75 Chapter 3 F 3 432 3 Remove the 18T gear 1 F 3 433 4 Free the 2 claws 1 and detach the inside cover 2 F 3 434 5 Free the claw 1 and detach the lower front cover 2 F 3 435 6 Remove the 2 screws 1 and detach the front auxiliary cover 2 3 76 2 F 3 436 A When installing the main drive unit be sure to pull up the drive release lever 1 drive release status before installing the 18T gear 2 as shown in the figure right side Note that the 18T gear may not engage with the drive release lever if the gear is not placed properly DN 777 F 3 437 7 Disconnect the connector 1 and remove the E ring 2 Remove the registration clutch 3 2 F 3 438 A The connector on the registration clutch side cannot be disconnected When removing the registration clutch be sure to disconnect the connector on the DC controller PCB J113 8 Disconnect the three connectors 1 Chapter 3 F 3 440 3 5 3 6 Removing the Multi purpose Tray Pick up Solenoid 0005 8990 1 Remove the screw 1 and the pick up solenoid cover 2 F 3 441 2 Disconnect the connector 1 and remove
64. 2 ZA BO Sada 2 13 242 High Voltage Co li A A A a ltda 2 15 2 4 2 1 Outline E EAEN E EEN EEEE EEA EE 2 15 2 4 2 2 Primary charging bias asi 2 16 2A 23 Developing bias PEC A A a 2 16 242 4 Primary transfer bias id 2 16 24 23 Secondary transfer bias generalionz oae E AD E R EE 2 17 24 2 6 A xiliary ITB Cleaning bias CAOS Aan EE 2 17 2 42 17 VIB cleaning bias Generation nterra AA AAA Ad 2 17 2 4 2 8 Fixing Bias GEneratiOn ornar ee NER nes EE AE RE R ER T E ARNEE EE ELVE O TA RR 2 17 24 3 Image Stabilizato Control e eases seta EEEE RER Zr A E AAEE sh 2 17 P RAE OIDE n EE EAE A EEE S AEEA T 2 17 24 3 2 Image density calibration D max di A Ad 2 18 2 4 3 3 Image halftone calibration D half control sirocic sansa ssdicesnaseavevsessvnaehssiavesncuasavadecesdeesa sddcsasanscasdages ESEE IPSI e EIEEE PeR esi peseta slides 2 18 244 Developing ROLY er a A EEEE E AE aiii 8 24 4 Outline dd Sea 8 244 2 Developing rotaty rotation dais 9 244 3 Developing rotary engaging control are A nepreeteaa neem a E E AM e 2 4 4 4 Developing rotary position detection gt DA STONE CATS nt dd A EO AO A an A EEE O E E E hehreh ZAR MQUtline irritan sia c sar ico radica veasensdasss asesduleGedeasaasvcacessaiea yadacas cetessudovasuaegcasdubabskdsandestasasvezedavascabaa E 2 4 5 2 Memory tag 2 4 3 3 Mem ry tag contact engaging c ntrolin nae n a ana E A E A A S ATR I A ances 2 23 24 5 4 Cartridge presence a ES 2 24 DAS Toner Cartridge life detect
65. 2 1 Skew correction function 2 52 2 Feed speed control acs ns Areale aa Ge Aa RA aa ana a et ee 2 5 2 3 Internal temperature detection iii is d 2 37 2 5 3 Detecting Jams NA 2 37 25 3 1 Jam Detection Outline iii ri edo 2 37 DS DA AMS A A o den AAN 2 5 3 3 Stationary Jams 253A Other JAMS ii a A IEA daa 2 5 4 Multipurpose PICKUP iii io 2 38 2 34 11 Multi purposestray piGk Up cial A isan ia Ad 2 38 ASAS reihe llih een taten aaa e a aa 2 39 2 6 1 Overview Configuration n een ns ben e need rien 2 39 2 61 V OutING tii hols ae ar Re Hrn ID A eii ca 2 39 2 6 2 Various Control Mechanisms 221 cccc cccccceceseeseccecedeenctcneetscecteeceteescececcusescersccuechuesenceueteeedbcecetseueteessteeredeeseeeeseeceaeeees 2 39 2 62 1HEiXing Lemperature Control iain tei ee ii ath eesti Heian Ke eee ees 2 39 2 6 3 Protective FUNCHIONS e Rd 2 40 2 6 3 1 RlickEr preventi nif netion ysis estenda een Bean liar 2 40 2 6 3 2 AN A O NN 2 40 2 6 3 3 Fixing unit failure detection ccccccescceceseceeeeeeeeeceaeeeeeaeeeeeaneeeecaeeeeesaeessaeeeeeaaeeeeeaeeeseaeeseaaeeeseaaeesseaeeessaaeeeseeaeeeseeeessueeeeees 2 41 2 7 EXTERNAL AND CONTROLS SYSTEM 00 ccc eec cece eter eee tease tener nan nana rn nn 2 42 Contents 2 7 POWER SUPPLY 22 22 22 A Re Genera Ste wa decease i Redan 2 42 2 7 1 1 POWSrSUPPIY ii a EHRE A cea cegedaedebiay cath A AA EA aaa 2 42 2 7 1 2 Other FUNCION A aie died ny de A aes
66. 2 4 6 Drum Cartridge 2 4 6 1 Outline 0005 8744 A drum cartridge has a function of forming a toner image on the ITB The drum cartridge and ITB unit are integrated as distinct from current models into the drum cartridge The following indicates the configuration of the cartridge and loads 2 25 Chapter 2 DC controller E abr o ZO Oc 5 of 5 5 S gt Sw g ZE 3 gt ae Ez Eis st Waste toner ae 2 ITB feed roller__ 0 8 detection circuit a gt 23 gt I Memory tag Qe i contact 5D Main 93 motor Ey Waste toner gt Memory tag g 3 a2 N 2 Waste toner ab A A transport plate wu A Slr Narang PAK ES DAL Waste toner screw Q a charging AY si roller y IN Mr Sis A Waste toner Y J sensor light emitter D Stirrer V Waste toner J sensor light receiver Waste toner case P cr Primary drum transfer roller Roller engaging Roller sensor engaging y y PS714 si ITB drive roller Auxiliary ITB cleaning roller Roller engaging cam F 2 33 The cartridge consists of the photosensitive drum primary charging roller waste toner transport plate etc These parts are driven by the main motor DCM701 This cartridge performs engaging operations for two rollers the ITB cleaning roller and auxiliary ITB cleaning roller with the DCM701 Position detection for these two rollers are performed with a common sensor A memory tag is installed into the drum cartridge T
67. 20 Chapter 2 Developing rotary Drive gear Engaging motor PM704 Photosensitive drum K A engaging cam Pressure plate Engaging detection flag Developing cylinder Photosensitive drum lt When rotary is disengaging gt lt When rotary is engaging gt F 2 27 2 4 4 4 Developing rotary position detection 0005 8719 This printer has a function of detecting the rotary engaging position between the rotary and drum determined in the developing rotary engaging control This detection is performed by the DC controller monitoring the output of the engaging sensor PS712 The DC controller determines either of three modes print initial and memory tag communication from whether the engaging detection flag located on the end of the drive gear shaft interrupts the PS712 2 21 Chapter 2 Relationship between the rotational direction of the engaging motor and the position of the sensor flag Rotary engaging sensor PS712 Developing Memory tag rotary contact SENSOR FLAG 1 Print mode Engaging Disengaging Hr 2 Initial mode Disengaging Disengaging 3 Memory tag communication Disengaging Engaging mode F 2 28 When the power is turned on or the top cover is closed the DC controller executes as follows based on the output of the PS712 When the output ofthe PS712 is H the DC controller determines that the printer is in print mode 1 in the table above and rotates
68. 3 2 1 1 Removing the Rear Cover ica A A e e idas 3 22 Right COVE Titi ti silo ee ea eds edenavidedtetndendee eect 3 2 2 1 Removing the Rght Cover Unit 32 3 Left COVEN A re r a sebeed ga oaa p ora r setcedgl da as shoe heed gee aau daaa p oe ea AEs 3 2 3 Removing eii A Aaa ea DAL a lee a ER Da eet 3 2 AU PPS Cover ne Sade sande Rela cba in Din nein NO 3 2 4 1 Removing the Upper Gover Uniten aca Benelli 3 3 3 2 5 FrontCOver u Ha anna IR A nein td IEA 3 2 3 1 ReMoving the Lett Cover rn ra havc ba otc sada a peed aE AI aaae bey een Soa eee 3 2 5 2 Removing the Front Cover Unit 3 2 6 F ace Up Cover Bann age a dee sabe Segue ucvesh aaae pia meter 3 2 6 1 Removing the Face up Cover RITMO CA ia aida 3 27 1 Removingithe VO C0oVer A ee A A A A a ee EPA AMDI D a SE a td 3 28 Removing the Upper Cover UEa e 2 2222 atari 3 2 8 2 Removing the ControliPanel cs iniaa RE A ae a A Era 3 2 8 3 Removing the Video Controller PCB 24404442400nsnnnnnnnnnnnnnnnnnnnnnnnnnnnnannnnnennnnnnonnnnnnennnnnnnnnnnnnnnnnsnnnnnnnnrnnnnnnnnnnnnnnnn 3 22 84 Removing the Front Cover Unit isnt 2 ee lic 3 2 8 5 Removing the Main Drive Unit 22440444400442400nnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnannnnnnnnnnannnnnnannnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnanannnnnnnnnnn 3 2 9 Main MOOT 0 a neigen 3 2 9 1 Removing the Upper Cover Unit A chin aA ini A eh 3 2 9 2 Removing the Control Rael 2 7 e 3 2 9 3 Removing the Video Contr
69. 4 2 Removing the Interface Controller PCB 0007 9024 1 Remove the seven screws 1 and detach the shield cover F 3 564 2 Remove the four screws 1 and disconnect the three connectors 2 then detach the interface connector PCB 3 from the machine 3 F 3 565 If you have replaced the video controller PCB be sure to go through the following 1 Execute PWM adjustment in service mode 2 Remove the existing EEPROM IC6 and mount it to the new PCB 3 6 4 3 Removing theA Fixing Motor 0007 9419 1 Remove the 6 screws 1 and detach the shield mount 2 F 3 566 2 Unplug the 1 connector 1 and remove the 4 screws 2 3 Remove the fixing motor 3 from printer 3 97 Chapter 4 MAINTENANCE AND INSPECTION Contents Contents 4 1 Periodically Replaced Parts a Chasse ae Ra EIG is 4 1 1 Periodic Replacement Parts iii ii nn hen ste essen i sdeseeseusevs Ai DC OMSUMMADIES E E A E E E EE A A EEES 4 2 1 Expected Service Life of Consumable Parts 4 3 Peri dic l Service pr OERE OREL ONE EE NE E Ei O ERO E Ea 43 1 Perodic Service nanyie A A A eE AT E dha vende A EE E ate ET NET 4 4 Cleaning 4 4 1 Pick up roller 4 4 2 Separation Pd lan ui Ru RR 4 4 3 Registration roller she cvecsdon sdscescbesbdevenscddesscdouacs denseusduceutescestenced deadecdestesdecensdadatsss idad dida suave idad sou sdedeusets AAA Registration shutter cusco titanic 4 4 5 Secondary
70. 6 2 Remove the 6 screws 1 and detach the shield mount 2 F 3 68 4 Free the 2 claws 1 and detach the inside cover 2 5 Free the claw 1 and detach the lower front cover 2 F 3 70 6 Remove the 2 screws 1 and detach the front auxiliary cover 2 Chapter 3 2 F 3 74 F 3 71 9 Remove the eight screws 1 and the main drive unit 2 A When installing the main drive unit be sure to pull up the drive release lever 1 drive release status before installing the 18T gear 2 as shown in the figure right side Note that the 18T gear may not engage with the drive release lever if the gear is not placed properly F 3 75 3 2 9 6 Removing the Main Motor 0005 8998 1 Remove the four screws 1 and the main motor 2 F 3 72 7 Disconnect the connector 1 and remove the E ring 2 Remove the registration clutch 3 3 2 10 Control Panel 3 2 10 1 Removing the Upper Cover Unit 0007 8192 1 Open the upper cover unit 2 Remove the screw 1 and unhook the two claws 2 3 Pull the bottom of the left cover 3 toward you and slide it in the direction of under to remove it A The connector on the registration clutch side cannot be disconnected When removing the registration clutch be sure to disconnect the connector on the DC controller PCB J113 8 Disconnect the three connectors 1 3 14 Chapter 3 9 Unhook the claw 1 and rem
71. 7 Chapter 3 3 4 10 Engaging Motor 3 4 11 2 Removing the Left Cover 3 4 10 1 Removing the Left Cover 0007 8599 1 Open the upper cover unit 0007 8527 2 Remove the screw 1 and unhook the two claws 2 1 Open the upper cover unit 3 Pull the bottom of the left cover 3 toward you and slide it in the 2 Remove the screw 1 and unhook the two claws 2 direction of under to remove it 3 Pull the bottom of the left cover 3 toward you and slide it in the direction of under to remove it 2 2 F 3 381 F 3 378 3 4 11 3 Removing the Density Detection PCB 3 4 10 2 Removing the Engaging Motor 0007 6078 1 Unhook the 2 claws 1 Remove the inner cover 2 from the printer 0005 8994 by pulling the cover towards you 1 Remove the two screws 1 and disconnect the connector 2 2 Remove the engaging motor 3 from the printer by sliding the motor to the direction of the upper F 3 382 2 Free the claw 1 and detach the dust blocking cover 2 3 4 11 Density Detection PCB 3 4 11 1 Removing the right cover 0007 8597 1 Remove the screw 1 and unhook the five claws 2 2 Pull the bottom of the right cover 3 toward you and slide it in the direction of the arrow to remove it F 3 383 3 Remove the screw 1 and disconnect the connector 2 Remove the density detection PCB 3 3 67 Chapter 3 F 3 387 F 3 384 2 Remove the test print switch lever 1 3 4 12 ITB Home P
72. C cartridge flag Y cartridge flag PS51 Y cartridge flag Photosensitive Photosensitive drum drum J a 1 i MN s _ y lt y lt When the Y cartridge is at developing position gt lt When the Y cartridge is at replacing position gt F 2 26 2 4 4 3 Developing rotary engaging control 0005 8714 This control is utilized to engage a developing cylinder in the rotary to the drum in order to transfer the toner image on the drum onto the ITB In rotary engaging control the DC controller switches the rotational direction of the engaging motor PM704 and moves the rotary to either of two positions engaging position and disengaging position At the time of rotary engaging travelling from a disengaging position to an engaging position the DC controller rotates the engaging motor clockwise for a specified period This allows the rotary engaging cam to rotate and then the engaging plate is pressed out The developing cylinder is engaged to the drum At the time of rotary disengaging travelling from an engaging position to a disengaging position the DC controller rotates the engaging motor counterclockwise and instructs the reverse operation of rotary engaging Then the developing cylinder is disengaged from the drum A mechanism used in this control is also used in a memory tag contact engaging operation Developing rotary position detection is performed by the DC controller monitoring the rotary engaging sensor PS712 2
73. C tr ee A a A ode 5 6 SO A O RA 5 6 O O NN 5 6 54 12 Starting Service Mod ii a 5 6 Chapter 6 APPENDIX 6 1 OUTLINE OF ELECTRICAL COMPONENTS 2 e ecceeceeeeeeeeeeeeeceeeeaeaaeeeeeeeeeeeeeseeseccuaaecaeeeeeeeeeeeeees 6 1 61 1 ClUtCH SOlGNOIG isis ii teenie 6 1 6 1 1ESolenoids ClUtCheS 22 Hanne eres an A R a a heave hel eee loko E anche 6 1 6 12 Motor Faia a A o aa 6 1 6212 1 Motors Fant ice ah oh a A A INTERN 6 1 AS O NN 6 2 61 31 SENSO AA AAA eg E N ENEE a ee 6 2 AMARE cds 6 2 A O A O aa NAAA 6 2 6 1 5 Variable Resistors VR Light Emitting Diodes LED and Check Pins by PCB ooooococccconccccnoccccnannnonannnnnonn nana nnnnnnos 6 3 6 1 5 1 Variable Resistors VR Test Pins Jumpers and Switches 2440424400442000nnnnnnnnnnnnennnnnnnnnnnnnnnnnnnnnnnnennnnnnnnnnnnnnnn nn 6 3 Contents Chapter 1 PRODUCT DESCRIPTION Contents Contents De TIE CATUTES a A ocean ETA tk ta ee celda el cedo ve S decada e ebrio dt e ML e e RON 1 1 A RN 1 1 IIS RN tests tst esst StS ttn ESES ENESES ESEAS SENES NEN ENESES NESES ESE ENESE ESSES ESE enS setene es eteen 1 1 1 2 System construction 1 2 1 System Configuration 1 3 Produet Specifications a DET ota leat es Seon Gabe beiten 1 3 1 Product Specifications EN A inthe eileen aie ra eso ON LADERA VIEW A oe AS AAA A AA AAA ae ne eras 1 42 Cross Sectional View coi A A A ia ii 1 43 Main UiS ea aera dba br Ri 1 4 4 Main Parts 1
74. CB 1 Remove the seven screws 1 and detach the shield cover ta eo Ao eeo F 3 153 2 Remove the four screws 1 and disconnect the three connectors 2 then detach the interface connector PCB 3 from the machine F 3 154 A If you have replaced the video controller PCB be sure to go through the following 1 Execute PWM adjustment in service mode 2 Remove the existing EEPROM IC6 and mount it to the new PCB 3 2 15 3 Removing the Sub High voltage Power Supply PCB 0005 9007 1 Remove the 2 screws 1 and disconnect the 2 connectors 2 Remove the sub high voltage power supply PCB 3 together with its PCB holder 3 28 0007 8477 F 3 155 3 Unhook the 4 claws and detach the sub high voltage power supply PCB 3 from the PCB holder 2 1 Connectors 2 3 1 F 3 156 3 2 16 Door Open Detection Swith 3 2 16 1 Removing the Upper Cover Unit 0007 8479 1 Open the upper cover unit 2 Remove the screw 1 and unhook the two claws 2 3 Pull the bottom of the left cover 3 toward you and slide it in the direction of under to remove it F 3 157 4 Remove the screw 1 and unhook the two claws 2 5 Pull the bottom of the right cover 3 toward you and slide it in the direction of the arrow to remove it Chapter 3 2 F 3 158 F 3 162 6 Open the face up cover 12 Remove the screw 1 black and detach the upper cover 2 from 7 Unhook the cl
75. Cover 0008 3510 1 Unhook the two claws 1 and remove the two levers 2 from the fixing unit 2 1 F 3 521 2 Unhook the two claws 1 1 F 3 522 3 Unhook the two claws 1 and remove the face up cover 2 from the fixing unit 1 2 1 nm mr mr Le gt FEEEEREREES errr ter ee eres F 3 523 3 6 1 2 Removing the Fixing Film Unit 0007 9392 1 Unhook the 1 claw 1 and remove the delivery roller gear 2 2 Unhook the 1 claw 3 and remove theA pressure roller gear 4 3 Remove the idle gear 5 F 3 524 4 Pressing the boss 1 inward rotate the delivery idle gear shaft holder 2 in the direction of the arrow and remove the holder together with the delivery idle gear shaft 3 F 3 525 5 Remove the 4 screws 1 unhook the 3 claws 2 and remove the fixing top cover 3 F 3 526 A Make sure that the 2 springs are fitted onto the bosses on the fixing top cover when reassembling the cover See the figure for the correct positions of the boss and springs shown on the left 50 F 3 527 3 91 Chapter 3 6 Remove the top separation guide 1 7 Remove the right pressure release lever 2 8 Slide the right pressure plate 4 upward and release the 2 bosses 3 9 Remove the right pressure plate 4 from the fixing unit F 1 F 3 528 10 Remove the left pressure release lever 1 11 Slide the left pres
76. ITB positively Then the negatively charged toner on the drum is transferred onto the positively charged ITB This procedure is repeated for each color Y M C Bk In full color printing as toners in four colors are piled up on the ITB the holding force of the toner weakens as the transfer process progresses for the Ist color 2nd color Therefore after transferring the first color the DC positive bias is increased for each color in order to supplement the holding force of the toner ITB Es DC bias Primary 77 transfer roller O O F 2 15 Step 6 Secondary transfer The toner on the ITB is transferred onto paper in this step A DC positive bias is applied to the secondary transfer roller to charge the back side of a fed paper This allows the toner on the ITB to transfer onto paper positively At the completion of secondary transfer a DC negative bias is applied to the secondary transfer roller to avoid soiling the back of paper with the toner on the ITB Chapter 2 Secondary paper transfer roller Ed DC bias gt F 2 16 Step 7 Separation The elasticity of paper causes the paper to separate from the ITB in the step This printer utilizes the static charge eliminator to reduce the charge on the back of paper and weaken the electrostatic adhesion of the paper and facilitate separation This makes a separation operation easier Paper Static tic Secondary charge eliminator transfer roller
77. J Lo lt Disengaging gt Engaging lever 2 4 7 3 Secondary roller position detection 0005 8779 This printer has a function of detecting the engaging position of the secondary transfer roller between the roller and ITB The home position of the roller is detected by the DC controller monitoring the roller engaging sensor PS714 and FEEDBACK TR2S signal for the secondary bias The DC controller detects whether the roller is at its home position Note when the power is turned on or the top cover is closed This detection is performed by a flag located at the end of the engaging detection gear interrupting the PS714 When the roller is at its home position the PS714 outputs L When the engaging detection gear is not at its home position the PS714 is H the DC controller rotates the main motor and let in the roller engaging clutch CL2 for a specified period to return the gear to its home position Then the DC controller detects the position of the secondary transfer roller engaging and disengaging by monitoring the FEEDBACK TR2S signal for the secondary transfer bias When the roller is at its engaging position the resistance of the roller increases and the value of the TR2S signal decreases since the roller contacts with the ITB When the roller is at a disengaging position the resistance decreases and the value increases Ifthe value of the TR2S signal does not vary when the CL2 is on the DC controller stops the printer engine and
78. Motron raan A er E E E E E E E T EA NAE O A O EN 3 97 Chapter 3 3 1 Before Parts Replacement 3 1 1 Cartridge Removal at Trouble Eruption 0005 8517 If trouble erupts in the printer be sure to remove the two kinds of cartridges EP 87 toner cartridges and drum cartridge following the procedures below If the cartridges are removed in normal way it may cause damage to the printer When removing cartridges be sure to turn ON OFF according to the following procedure Power switch ON OFF procedure OFF ON after more than 5 seconds OFF 3 1 2 Toner cartridge removal 0005 8518 1 Remove the reinforcement plate 2 Be sure that the engaging sensor flag is at the position as shown in the following figure in toner cartridges memory tag contact disengaging status If the sensor flag is not at the position in the following figure in toner cartridges memory tag contact engaging status rotate the 33T gear by hands so that it is at the position Engaging sensor Sensor flag F 3 1 3 Rotate the 23T gear by hands in the direction of the arrow so that the rotary guide of the toner cartridge is at the top 23Tgear Rotary guide yg 23Tgear Toner cartridge Rotary guide O F 3 2 3 1 Chapter 3 4 Grasp the finger holding on the toner cartridge and remove the cartridge in a horizontal position from the printer F 3 3 5 Repeat the steps 3 and 4 to remove the toner cartridges for each color 3 1 3
79. ROM IC6 and mount it to the new PCB 3 2 8 4 Removing the Front Cover Unit 0007 8197 1 Unhook the two claws 2 holding the multi purpose tray 1 2 Slide the front cover unit 3 to the left Pull out the front cover unit to the right and remove it off the printer F 3 41 3 2 8 5 Removing the Main Drive Unit 0005 8767 1 Remove the 2 screws 1 and detach the control panel mount 2 2 F 3 42 2 Remove the 6 screws 1 and detach the shield mount 2 F 3 44 4 Free the 2 claws 1 and detach the inside cover 2 5 Free the claw 1 and detach the lower front cover 2 F 3 46 6 Remove the 2 screws 1 and detach the front auxiliary cover 2 Chapter 3 F 3 47 A When installing the main drive unit be sure to pull up the drive release lever 1 drive release status before installing the 18T gear 2 as shown in the figure right side Note that the 18T gear may not engage with the drive release lever if the gear is not placed properly F 3 48 7 Disconnect the connector 1 and remove the E ring 2 Remove the registration clutch 3 j t O o A The connector on the registration clutch side cannot be disconnected When removing the registration clutch be sure to disconnect the connector on the DC controller PCB J113 8 Disconnect the three connectors 1 3 10 3 2 9 Main Motor 3 2 9 1 Removing the Upper Cov
80. Service Manual LBP2410 Series LBP5200 Canon Mar 10 2005 Application This manual has been issued by Canon Inc for qualified persons to learn technical theory installation maintenance and repair of products This manual covers all localities where the products are sold For this reason there may be information in this manual that does not apply to your locality Corrections This manual may contain technical inaccuracies or typographical errors due to improvements or changes in products When changes occur in applicable products or in the contents of this manual Canon will release technical information as the need arises In the event of major changes in the contents of this manual over a long or short period Canon will issue a new edition of this manual The following paragraph does not apply to any countries where such provisions are inconsistent with local law Trademarks The product names and company names used in this manual are the registered trademarks of the individual companies Copyright This manual is copyrighted with all rights reserved Under the copyright laws this manual may not be copied reproduced or translated into another language in whole or in part without the written consent of Canon Inc COPYRIGHT 2001 CANON INC Printed in Japan Caution Use of this manual should be strictly supervised to avoid disclosure of confidential information Introduction Symbols Used This documentatio
81. TOM F 2 6 2 6 Chapter 2 1 The shaded areas indicate areas in which an image can be written by the laser beams 2 Times T1 to T3 vary according to a paper size 3 When the multi purpose tray is selected as a pick up source the paper width cannot be determined if a paper size specification command is not sent from the video controller In this case values of T1 to T3 are set to be that of universal size 2 3 2 6 Laser failure detection 0005 8872 The DC controller detects a condition of the control in order for the laser control to be performed properly If the laser current monitor signal PDOUT cannot be detected when the scanner motor is started up or when APC is under way the DC controller will assume the condition to indicate a fault in the scanner block and stop the printer at the same time it will communicate the fact to the video controller 2 3 3 Laser Scanner Motor Control 2 3 3 1 Outline 0005 8877 The control is utilized to rotate the scanner motor in order to strike laser beams to a proper position on the photosensitive drum The circuit diagram of the scanner motor control is illustrated below DC controller Laser scanner unit oo A ei BDI Lune J31 2 se Scanner motor y103 1 J21 4 Scanner driver IC acc 129 ACC 2 Frequency 1 Integrator Drive comparator Ec 130 Deol 3 circuit circuit la Standard i clock TT 24 Frequency gt 4 divide
82. UANDO SE ABRE PRECAUCION EVITAR EXPONERSE AL R VARO AVATTAESSA OLET ie N KYM TT M LLE LASERS TEILYLLE ALK KATSO SATEESEEN VARNING OSYRLIG LASERSTRALKING NAR DENNA DEL R PPNAD BETRAKTA EJ STR LEN ADVARSEL USYNLIG LASER STR STR LING N R DENNE ER ABEN UNDG ADVARSEL USYNLJG Lasenstelizis NAR DEKSEL APHES DVARSEL UNGA E EKSPONERING FOR S TRALEN EM ZOnn 0ABTUFTAV Y Tasanentusr V 9 RESSENSVS SLUT RSV F 1 9 LBP5200 Chapter 1 Invisible laser radiation when open A DANGER ris pitt EXPOSURE TO BEAN CLASS 38 INVISIBLE LASER RADIATION WHEN OPEN CAUTION er eco RAYONNEMENT LASER INVISIBLE DE CLASSE 38 ATTENTION N OS OuVERTURE Caries LERFOSTON AU FAISCEAU VORSICHT BE LASERSTRAHLUNG KLASSE 98 WENN ABDECKUNG N LASER INVISIBLE DE ABRIR PRECAUCI N RADIACI N L SER ose DE CLASE 8 PRESENTE AL VARNING 38 OSYNUG LASERSTR LNING NAR DENNA DEL AR PPNAD NAKYMA VAROITUS A Tr ii E O eles 23380174 ol YAKO WELCH BAO AE HAL FE DO HE A E EA E LEBELBERUTE RUS 8126 F 1 10 1 6 5 Safety of Power Supply Note that even if the power switch is turned off the current still flows to the primary side of the power supply unit Unplug the power cord before disassembling and reassembling the printer 0005 8527 Chapter 2 TECHNICAL REFERENCE Contents Contents 2 WeFunctional Conn guration A isa 2 1 DA AE 2 1 2 2 SETERS E A O A 2 2 2 2
83. a cals dec ted vesteradeseeeuendescopta a e araa a dati haa nd 3 69 3 5 2 Removing the Upper Cover Unit ceegsccecedasdead AAA aii iii 3 69 3 5 2 2 Removing the Control Panel ici cnccenit cheatin betel alin chs e dee aside t atte bl le 3 71 3 5 2 3 Removinhg the Video Controller PCB uc A A idas 3 71 3 52 4 Rem ving the Front Cover Unit cui A Eu nl 3 71 3 5 2 5 Removing the Main Drive Unit cccececcececneeeeeeeeeceeaeeeeeaeeeeeeaeeeeeaaeeeceaaeeecaaeeesaaeeeeaaeesesaaeeeseneeesaaeeessaeeeseaeesseeeesseneeessaees 3 71 3 5 2 6 Removing the Multi purpose Tray Paper Sensor 2244s4s4s0snnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnsnnnnnnnnnnnnnnnnnnnannnnnsnnnnnnanannnnennn nn 3 73 3 5 3 Multi purpose Pickup Solenoid sanne een se et a ne Doa 3 73 3 5 3 1 ReMmoving the Upper Cover Unit asia 3 73 3 5 3 2 RemoVving the Control Panel ici iaa Ad AS on ad the 3 75 3 5 3 3 Removing the Video Controller POB dia 3 75 3 5 3 4 Removing the Fr nt Cover Units iii A dd t 3 75 8 5 3 5 Removing the Main Drive nitisitrii ai caia dt idas 3 75 3 5 3 6 Removing the Multi purpose Tray Pick Up Solenoid u4444044444000nnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnannnnnnennn nenn 3 77 3 5 4 Manual Separation Pad voii e a 3 77 3 5 4 1 Removing the Pick up Roller Protect Cover ccccccecseeceeceeeeeeceeeeeeeeeceaeeeeceaeeeeseaeeeseaaeeesceaeeeeeaeeeseeaeesecaeesseaeeeseneeeeseneeesseaees 3 77 3542 Removing the
84. akaieie 4 4 5 Secondary transfer roller 446 Feed Delt riii A re ida 44 7 External Covers A eee ogee ote deh ned neds ant alate a gi sense te 4 5 User Maintenance 4 5 1 Toner cartridge ricino pred 4 5 2 Drum Cartridge 4 5 3 Mylar ii A os 4 5 4 Pressure Roller fixing assembly 4 5 5 Density sensor ITB home position sensor vsisi cinean kaien ee Chapter 5 TROUBLESHOOTING 5 1 MEASUREMENT AND ADJUSTMENT 0cscseeseeeecceeecceceeeeceseesesaeaeaeaeeeeseeeeesseseeseseeseceseeeeeeeesuaaaaaaes 5 1 STA Initial GMECK ssh a Es oe hy Seas ete eek Oh NE Ce a See Stat toe 5 1 1 1 Initial Check 5 1 2 Test Print 5 1 2 1 Test Print Contents 5 1 3 Adjustment of Electrical Components cocotero is HER 5 1 5 1 3 1 When Replacing the Laser Scanner Assembly and interface controller PCB cccccccceeeeeeeeeeeeeeeeeeeeseneeeeesaeeeeeneeeseneeeeees 5 1 5 1 4 Adjustment of Fixing System 0 eria aia iade dstepecddnengebeutsadeseneutve ders 5 1 5 1 4 1 Checking the nip width of the lower fixing roller ooooooccnnnnncnnnccconocccccnccnccnnocnncnnc conan ncnonnn conan nn cnn rca rene n cn nnnn nn rra era naar nannan ennnen 5 1 S 2 SERVICE TOOLS 22 2 2 a menu es een 5 3 A o AAA nn ek ee ok deel eee ed ee eee 5 3 5 22 Special Mo ii ob 5 3 A AM A sur er NR OSA 5 3 53 ERROR CODE ae le einen 5 4 SEQU AS areata eee ee es ee ee ee ed ek eee ee 5 4 5 3 2 9erVice Messag8s A a it 5 4 SAS OVICO MO
85. al remains H continuously for more than 10 seconds the CPU determines a fan failure then stops the printer and notifies the failure to the video controller DC controller 23 Cooling fan 1 FAN1D Fan motor dJi control circuit 3_ FAN1S Internal temperature J137 detection thermistor 1 SLVTH PR TH3 Fan rotation time s 0 30 50 or more 2 8 3 Interface Controller 2 8 3 1 Outline The video controller serves to receive print information from an external device e g host computer over an interface cable Such print information may be either CAPT commands used to communicate the status of the printer and printer specific information or dot matrix data 2 48 0005 8811 Chapter 2 resulting from conversion by the host computer of print data of a resource type Dot matrix data is sent to the DC controller PCB and is used to control the activation of the laser diode The bi directional interface enables an external device to monitor the status of the printer USB interface EEPROM IC6 USB controller IC IC5 ASIC IC1 Expansion interface option l Expansion interface Internal RAM 8 MB IC3 X TAL 1 14 2MHz Reset IC ICQ 2 8 3 2 Operation of the Blocks a ASIC 1C1 It has the following primary functions 1 controls the input to and output from the internal RAM 2 controls the timing at which dot
86. aneously This enables a two fold printing at the same print speed First scan Second scan Third scan Fourth scan lt LD1 scan line LD2 scan line Feed direction Image areas F 2 4 2 4 Chapter 2 2 3 2 Laser Control 2 3 2 1 Outline This control is utilized to turn on off the two laser diodes LD1 LD2 based on the LASER CONTROL signal sent from the DC controller The circuit diagram of the laser control is illustrated below DC controller Laser driver circuit LD2 switching circuit 5V 1 102 13 L 2 VDO1 i 4 VDO1 8 VDO2 10 VDO2 CNTO i 11 i CNT1 CNT2 3 9 12 _ Sample C18 hold circuit 0005 8837 The DC controller sends the VIDEO VDO1 VDO1 VDO2 VDO2 signals for image formation and the LASER CONTROL CNTO CNT1 CNT2 signals for changing the operation mode of the laser to the logic circuit in the laser driver IC The laser driver performs the laser control responsive to a combination of the CNTO CNT1 CNT2 signals T 2 2 Operation mode CNTO CNTI CNT2 Details Standby mode L L L Laser control off status Print mode H H H Laser emission is executable according to the VIDEO signals LD1 force on mode L H L Turns on the LD1 forcefully LD2 force on mode H L L Turns on LD2 forcefully LD force off mode H H L Turns off the LD1 a
87. ani alec a NSA A lien Mea 2 6 2 3 2 4 Horizo tal synchronous Control aiii a adaki iee RER hin 2 6 DIS Image MASCOTA er ra era eee Se ea A eee de ee N ee AEE TINAA 2 6 2 3 2 6 Laser failure detection ii A diia 2 7 2 3 3 Laser Scanner Motor Control 22 c cccc cccetcccesceccececesdeneusensnceeetcedcesesececcevecsbecddecgasucebseesadeecticesadesdececeasuectceceavenetcecgeevents 2 7 DI QUINA A A A a Eee ren 2 7 2 3 3 2 Scanner motor speed CONIOL ocoocccconnccconncccnoncccnno naco ronca 2 7 2 3 3 3 5canner motor failure detection iii iia did ia asada cuvanevedvessednas cistsevieg 2 7 2 4 IMAGE FORMATION SYSTEM en ae nnd nl 2 8 2 4 1 Overview Configuration sen fost es oe ee cece da estes a ernennen een 2 8 2 4 1 1 Oulline 4 2 2 A E T EEE AEE E E HER en 2 8 24 12 Image Formation Process nnen et and heda AA ap a a h a 2 8 2 4 1 3 Electrostatic latent image formation block 244 2244044444n0ennnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnennrnnnnnnnsnnnnnnannn 2 9 2 4 1 4 Developing bl ck 2 2 rinnen A A A A a 2 10 2 4 1 5 Transfer A NN 2 11 A A A NN 2 12 Contents A 2a DDr 2 4 2 High Volt ge Controlman npa hee ee noi ab DAD A O NA 2 4 22 Primarycharging bias JM cit A a Gee Data 242 3 Developing bias generation 242 a ata eet 2 4 2 4 Primary transfer blas generatlonina c sins iceive 28 02 ala ae AAA ee an 2 4 2 5 Secondary transfer bias generation 2 4 2 6 Auxiliary ITB cleaning bias generation
88. aw 1 and remove the I O cover 2 from the printer the machine MIA F 3 159 8 Unhook the two claws 1 Slide the rear cover 2 downward and remove it a A When attaching the upper cover be sure that you tighten the screw black you removed in step 5 at its correct location When attaching the upper cover be sure that you match the 2 positioning lugs 1 of the upper cover with the 2 notches in the face up auxiliary cover At this time check to make sure that the paper retainer 3 does not block the paper path F 3 160 9 Unhook the claw 1 and remove the link gear 2 10 Remove the link lever 3 from the shaft 4 F 3 161 11 Remove the three screws 1 3 29 Chapter 3 The enlargement of paper retainer NG F 3 164 A Be sure to install the top cover unit with the drive release lever 1 pulled up drive release status and then install the link lever 2 2 When installing the drum cartridge in the printer with the top cover unit removed be sure to do so after pulling up the drive release lever 1 securely drive release status When the lever is pulled down drive status the coupling 2 is pushed out Therefore the shaft of the drum cartridge may hit the coupling and may damage the coupling e AAA lin F 3 165 3 30 F 3 166 3 2 16 2 Removing the Door Open Detection Switch 0005 8948 1 Unhook the two claws 1 and di
89. boss 1 rotate the rotary releasing lever left 2 in the direction of the arrow F 3 256 11 While pushing on the boss 1 rotate the rotary releasing lever right 2 in the direction of the arrow F 3 257 12 Lift up the developing rotary unit 3 in a horizontal position as holding the rotary release levers right 2 and left 1 Remove the unit A When installing the developing rotary unit be sure to check that the 2 leading edges of rotary holders are set on the flame of the printer 3 4 3 Developing Rotary Motor 3 4 3 1 Removing the Upper Cover Unit 0007 8529 1 Open the upper cover unit 2 Remove the screw 1 and unhook the two claws 2 3 Pull the bottom of the left cover 3 toward you and slide it in the direction of under to remove it 3 a 2 F 3 259 4 Remove the screw 1 and unhook the two claws 2 5 Pull the bottom of the right cover 3 toward you and slide it in the direction of the arrow to remove it 2 F 3 260 6 Open the face up cover 7 Unhook the claw 1 and remove the I O cover 2 from the printer F 3 261 8 Unhook the two claws 1 Slide the rear cover 2 downward and remove it 3 47 Chapter 3 1 When attaching the upper cover be sure that you tighten the screw black you removed in step 5 at its correct location 2 When attaching the upper cover be sure that you match the 2 positioning lugs 1 of the upper cover wi
90. cartridge may hit the coupling and may damage the coupling 3 3 1 2 Removing the Laser Scanner Unit 0005 8757 1 Remove the face down sub tray 1 2 Disconnect the three connectors 2 i a a F 3 204 3 Remove the four screws 1 and the laser scanner unit 2 3 37 Chapter 3 A The laser scanner unit is not adjustable in the field Be sure not to disassemble it If you have replaced the laser scanner unit be sure to execute PWM adjustment in service mode For details see p 4 40 3 38 Chapter 3 3 4 IMAGE FORMATION SYSTEM 3 4 1 Drum Cartridge Memory Tag Contact 3 4 1 1 Removing the Upper Cover Unit 0007 8579 1 Open the upper cover unit 2 Remove the screw 1 and unhook the two claws 2 3 Pull the bottom of the left cover 3 toward you and slide it in the direction of under to remove it 3 F 3 209 9 Unhook the claw 1 and remove the link gear 2 10 Remove the link lever 3 from the shaft 4 2 F 3 206 4 Remove the screw 1 and unhook the two claws 2 5 Pull the bottom of the right cover 3 toward you and slide it in the direction of the arrow to remove it F 3 210 11 Remove the three screws 1 2 F 3 207 6 Open the face up cover 7 Unhook the claw 1 and remove the I O cover 2 from the printer F 3 211 12 Remove the screw 1 black and detach the upper cover 2 from the machine F 3 208 8 Unhook
91. clutch side cannot be disconnected When removing the registration clutch be sure to disconnect the connector on the DC controller PCB J113 8 Disconnect the three connectors 1 F 3 244 9 Remove the eight screws 1 and the main drive unit 2 F 3 245 3 4 2 6 Removing Rotary Drive Unit 0007 8506 1 Remove the 6 screws 1 and detach the shield mount 2 F 3 246 2 Disconnect the four connectors 1 3 Remove the five screws 1 and the rotary drive unit 2 3 45 Chapter 3 F 3 248 A The self tapping screw 1 used for installing the rotary drive unit must be screwed the last F 3 249 3 4 2 7 Removing the Developing Rotary Unit 0005 8809 1 Disconnect the three connectors 1 and unhook the two claws 2 2 Slide the fan duct 3 in the direction of the arrow Remove the cooling fan 4 with the fan duct F 3 250 3 Disconnect the six connectors 1 3 46 F 3 251 4 Disconnect the two connectors 1 5 Remove the two screws 2 F 3 252 6 Remove the four screws 1 7 Free the cable 2 from the cable guide 3 then detach the reinforcing plate 4 F 3 253 8 Remove the two screws 1 A A ADA a o o F 3 254 9 Press the upper areas of the two rotary holders with a screwdriver inward and make sure that the rotary holders 1 are removed from the printer Chapter 3 F 3 255 10 While pushing on the
92. counterclockwise for a specified period This allows the memory tag contact engaging cam to rotate Then the contact is pressed out and engaged to the memory tag At the time of memory tag contact disengaging travelling from a engaging position to a disengaging position the DC controller rotates the engaging motor counterclockwise and instructs the reverse operation of the contact engaging This allows the contact to be disengaged from the memory tag A mechanism used in this control is also used in a developing rotary engaging operation The developing rotary position detection is also performed by the DC controller monitoring the rotary engaging sensor PS712 Developing rotary f Photosensitive Memory tag Drive gear ae 2 Memory tag contact Engaging motor PM704 Memory tag contact engaging cam lt When the memory tag contact is at disengaging position gt Memory tag contact Photosensitive Memory tag drum Pressure plate lt When memorytag is disengaging gt lt When memory tag is engaging gt F 2 31 2 4 5 4 Cartridge presence detection 0005 8736 This detection is utilized to detect the presence of the cartridge When the power is turned on or the top cover is closed the DC controller reads in data cartridge ID from the memory tags in each toner cartridge When the DC controller successfully reads data it determines a cartridge presence If the DC controller determines a cartridge out it not
93. cs system used in conjunction with an application CAPT is sued after installing it to a Microsoft Windows 2000 XP or 98 Me environment Use the CD ROM that comes with the machine for installation 2 50 Chapter 2 In CAPT the paper size original size number of prints to make and settings related to print quality are all specified on a computer screen The way these settings are made differ between Microsoft Windows 2000 XP and 98 Me 2 51 Chapter 3 DISASSEMBLY AND ASSEMBLY Contents Contents 3 1 Before Parts Replacement 3 1 1 Cartridge Removal at Trouble Eruption 3 1 2 Toner cartridge removal 3 1 3 Drum cartridge removal 3 2 EXTERNAL AND CONTROLS SYSTEM 3 2 1 Rear Cover 3 2 1 1 Removing the Rear Cover 3 2 2 Right Cover 3 2 2 1 Removing the Rght Cover Unit 3 2 3 Left Cover 3 2 3 1 Removing the Left Cover 3 2 4 Upper Cover 3 2 4 1 Removing the Upper Cover Unit 3 2 5 Front Cover 3 2 5 1 Removing the Left Cover 3 2 5 2 Removing the Front Cover Unit 3 2 6 Face up Cover 3 2 6 1 Removing the Face up Cover 3 2 7 1 0 Cover 3 2 7 1 Removing the I O Cover 3 2 8 Main Drive Unit 3 2 8 1 Removing the Upper Cover Unit 3 2 8 2 Removing the Control Panel 3 2 8 3 Removing the Video Controller PCB 3 2 8 4 Removing the Front Cover Unit 3 2 8 5 Removing the Main Drive Unit 3 2 9 Main Motor 3 2 9 1 Removing the Upper Cover Unit 3 2 9 2 Removing the Control Panel 3 2 9 3 Removing the Vi
94. ctional electrification Here the toner becomes uniformed negative potential 2 10 Chapter 2 The printer charges the uncharged toner by applying DC bias onto the blade inside the toner cartridge The DC bias is also used as developing bias Step 4 Development The toner is adhered onto an electrostatic latent image on the photosensitive drum in this step The toner is insulators and acquires a negative charge by friction due to the rotating cylinder and the blade When the negatively charged toner makes contact with the drum exposed areas on the drum are more positively charged than that on the cylinder Then the toner charged about the same as the cylinder adheres onto the exposed areas on the drum The latent image on the drum becomes visible A Although the charges on the exposed area on the drum are shown as positive in follow in actuality they are negative However they are more positive than the charges on the cylinder V t Drum surface potential exposed areas g Y S a Toner potential gt N Developing cylinder surface potential lt Drum surface potential unexposed areas F 2 14 2 4 1 5 Transfer block 0005 8940 This block comprises three steps which transfers the toner image on the drum surface onto paper Step 5 Primary transfer The toner on the drum is transferred onto the ITB in this step A DC positive bias is applied to the primary transfer roller opposite to the drum in order to charge the
95. d 3 55 3 4 5 5 Removing the Main Drive Unit ccccccecceeeneeeeeneeeeeeeeeeeeaeeeeesaeeesesaeeesaaeeeeeaaeeesaeeeecaaeeeceaaeeecaaeesceaeeeseaeeeseneeesseeeeseseeeseaes 3 55 3 4 5 6 Removing the Rotary Drive Unit 2400424400unsnnannannnnonnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnannnnnnnnnnnnnnnnsnnnnnnnnnnnnnnnnnnnnnannnnnnnnnnnnnnnnnnn 3 56 Contents 3 4 5 7 Removing the Developing Rotary Unit 240s444400nnnnannnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnannnnnnnnnnnnnnnnnnnannnnannnnnannn 3 57 3 4 5 8 Removing the Developing Rotary Toner Level Detection PCB ooooccccnnicccinoncccnonococonencccnnnnncnnnnccnnnnn cn non nc n rra rana n canina rra 3 58 3 4 6 Secondary Transfer Roller sen se Rennen 3 4 6 1 Removing the Secondary Transfer Roller 3 4 7 Toner Cartridge Motor 3 4 7 1 Removing the Upper Cover Unit 3 4 7 2 Removing the Rotary Drive Unit 3 4 7 3 Removing the Toner Cartridge Motor s cccscccesccecaseccectosvadesssncstcesceostesenccadsecsbescicaetheceuteacstdentecedhasthadhsecschapstdserepeeteesnenensodeae 348 Waste Toner Detection P OB e e e diet 3 4 8 Removing the Upper Cover Unit 3 4 8 2 Removing the Video Controller PCBA ipe e el aN aeaaea Taaa 3 4 8 3 Removing the Waste Toner Detection PCB 3 4 9 Rotary Drive Unica id a a A eae Aaa Gee atk Geeta a a 3 4 9 1 Removing the Upper Cover Unit ooooonoccccnnococonoccccononcncononcnnn
96. d down black you removed in step 5 at its correct location drive status the coupling 2 is pushed out Therefore the shaft of 2 When attaching the upper cover be sure that you match the 2 the drum cartridge may hit the coupling and may damage the positioning lugs 1 of the upper cover with the 2 notches in the face coupling up auxiliary cover At this time check to make sure that the paper retainer 3 does not block the paper path See e Y yO e pupp y M Y F 3 110 3 20 Chapter 3 2 F 3 111 F 3 114 3 2 12 2 Removing the Video Controller PCB arte alada 5 Pull the bottom of the right cover 3 toward you and slide it in the 5 901 s 3 A 9009 9010 direction of the arrow to remove it 1 Remove the seven screws 1 and detach the shield cover 2 F 3 112 F 3 115 6 Open the face up cover 2 Remove the four screws 1 and disconnect the three connectors 2 then detach the interface connector PCB 3 from the machine T Unhook theclaw L and remove the VO cover 2 inom vite printer F 3 116 F 3 113 8 Unhook the two claws 1 Slide the rear cover 2 downward and remove it A If you have replaced the video controller PCB be sure to go through the following 1 Execute PWM adjustment in service mode 2 Remove the existing EEPROM IC6 and mount it to the new PCB 3 2 13 Power Supply Board 3 2 13 1 Removing the Upper Cover Unit
97. deo Controller PCB 3 2 9 4 Removing the Front Cover Unit 3 2 9 5 Removing the Main Drive Unit 3 2 9 6 Removing the Main Motor 3 2 10 Control Panel 3 2 10 1 Removing tl 3 2 10 2 Removing tl 3 2 11 DC Controller 3 2 11 1 Removing t 3 2 11 2 Removing tl 3 2 11 3 Removing tl 3 2 12 Interface Cont 3 2 12 1 Removing tl 3 2 12 2 Removing tl 3 2 13 Power Supply 3 2 13 1 Removing tl 3 2 13 2 Removing tl 3 2 13 3 Removing tl 3 2 14 High voltage PCB 3 2 14 1 Removing tl 3 2 14 2 Removing t 3 2 14 3 Removing tl roller PCB he Upper Cover Unit he Control Panel he Upper Cover Unit he Video Controller PCB he DC Controller PCB he Upper Cover Unit he Video Controller PCB Board he Upper Cover Unit he Video Controller PCB he Power Supply Unit 3 2 14 4 Removing tl 3 2 15 Sub High Voltage Power Supply PCB he Upper Cover Unit terri idilio talas he Video Controller PEB ti A eared cat AA aa tae Gal ee SCH he Sub High voltage Power Supply PGB 1 22 22 sca did 3 25 he High voltage Power Supply POB die ite Gece aa cared ee a hese beets acetic ative 3 26 A A RN 3 26 Contents 3 2 15 1 Removing the Upper Cover Unit 3 2 15 2 Remoymg the Video Controller PEB 2 2 e ns Acer leds 3 28 3 2 15 3 Removing the Sub High voltage Power Supply PCB ueunesesesesnenesennenenesnenennnonnenenennnnenenennentnennenenennnnennnennenenennsnsenennensnenenennnannentnenn 3 28 3 2 16 Door Open Detection Swith 3 2 16
98. e ROM 1 Printer engine sequence control 2 Drive controls for the developing rotary motor toner cartridge motor fixing motor engaging motor 3 Drive control for the cooling fan 4 Internal temperature detection thermistor control 5 Reading writing to the non volatile memory b ASIC IC 102 The ASIC Application Specific IC is an IC used for interface of IC memory external device etc It controls the following operations according to the CPU 1 Laser scanner control 2 Control of communications with the video controller 3 Power supply unit fixing control circuit low voltage power supply circuit control 4 High voltage power supply PCB control 5 Drive control for the main motor 6 Sensor switch controls 7 Clutch solenoid controls 8 Reading writing to the memory tag 9 250 sheet paper feeder option control c Reset IC IC105 It monitors 3 3 V and resets the CPU and ASIC when the power is turned on d Non volatile memory IC109 It stores backup data e Developing rotary motor driver IC IC103 It controls the developing rotary motor f Toner cartridge motor driver IC IC104 2 44 Chapter 2 It controls the toner cartridge motor g Fixing motor driver IC IC106 It controls the fixing motor h Engaging motor driver IC IC107 It controls the engaging motor i Fan motor control circuit It controls the cooling fan motor 2 8 2 3 Motor fan control 0007 9343 This printer utilizes four DC
99. e arrow to remove it 2 F 3 448 6 Open the face up cover 7 Unhook the claw 1 and remove the I O cover 2 from the printer 3 78 2 F 3 449 8 Unhook the two claws 1 Slide the rear cover 2 downward and remove it 11 F 3 450 9 Unhook the claw 1 and remove the link gear 2 10 Remove the link lever 3 from the shaft 4 F 3 451 11 Remove the three screws 1 2 NE F 3 452 12 Remove the screw 1 black and detach the upper cover 2 from the machine Chapter 3 A 1 When attaching the upper cover be sure that you tighten the screw black you removed in step 5 at its correct location 2 When attaching the upper cover be sure that you match the 2 positioning lugs 1 of the upper cover with the 2 notches in the face up auxiliary cover At this time check to make sure that the paper retainer 3 does not block the paper path 3 5 5 2 Removing the Control Panel The enlargement of paper retainer OK NG 0007 8995 1 Free the claw 1 and disconnect the connector 2 then detach the control panel for the machine F 3 454 A Ba F 3 457 1 Be sure to install the top cover unit with the drive release lever 1 pulled up drive release status and then install the link lever 2 2 When installing the drum cartridge in the printer with the top cover 3 5 5 3 Removing the Video Controller PCB unit removed be sure to do so af
100. e multi purpose tray 3 Select face up delivery 4 Press the test print switch 5 Open the delivery door immediately after the leading edge of the print has come out to the face up tray Take out the print from the printer after 10 seconds from turning off the power switch 6 Measure the width of the glossy band across the paper and check that it meets the following requirements shown in figure LBP 2410 Center a 6 to 7 5 mm Difference between right left and center b a c a 0 6 mm or less Difference between right and left b a 0 5 mm or less LBP5200 Center a 5 1 to 6 1 mm Difference between right left and center b a c a 0 3 to 0 8mm Difference between right and left b a 0 8 mm or less 5 1 Chapter 5 Paper Feed Direction About 30 mm F 5 2 5 2 Chapter 5 5 2 SERVICE TOOLS 5 2 1 Standard Tools 0005 8442 The table below lists the standard tools required for servicing the printer T 5 1 No Tool name Tool No Remark 1 Tool case TKN 0001 With a clip 2 Jumper wire TKN 0069 0 02 to 0 3 mm 3 Clearance gauge CK 0057 0 to 600 g for checking the cassette spring pressure 4 Compression spring scale CK 0058 M4 M5 Length 363 mm 3 Phillips screwdriver CK 0101 6 Phillips screwdriver CK 0104 M3 M4 Length 155 mm 7 Phillips screwdriver CK 0105 M4 MS Length 191 mm 8 Phillips screwdriver CK 0106
101. e position Note 1 in secondary transfer roller home position detection 2 At the timing of the start of secondary transfer the DC controller let in the roller engaging clutch CL2 This transmits the drive of the main motor DCM701 to the engaging cam Then the engaging lever is pushed out and the secondary transfer roller starts to engage to the ITB 3 At this point the DC controller is monitoring the output of the PS714 When the output becomes L it lets out the CL2 This allows the cam to stop and the secondary transfer roller to stop at its engaging position 4 After a print operation the DC controller lets in the CL2 again for 0 2 seconds This disengages the secondary transfer roller from the ITB 5 The DC controller monitors the output of the PS714 When the output becomes L it lets out the CL2 This allows the cam to stop and the secondary transfer roller to stop at its home position A Note 1 The home position for the secondary transfer roller is the state in which it is disengaged from the ITB Note 2 The operation of the engaging cam used in this control is also used in the cleaning roller engaging control 2 32 Chapter 2 DC controller ICLRSNS TR2CLD Main motor Roller engaging clutch Roller engaging la detection gear YN engaging ff sensor 3 Engaging cam Secondary transfer roller Engaging lever ITB Engaging cam Secondary Lo transfer roller
102. e the EP 87 drum cartridge is set in the printer properly 5 Fixing unit sets a Make sure the fixing unit is set in the printer properly 6 External cover sets a Make sure the top cover and memory cover are closed securely 7 Condensation During winter if the printer is brought from a cold place such as a warehouse into a warm room condensation will appear inside the printer causing various problems Ex a Condensation in the optical system four sided mirror reflective mirror lens etc will result in a light print image b As the photosensitive drum is cold the resistance of the photoconductive layer is high this will lead to incorrect contrast If condensation appears either wipe the parts with dry cloth or leave the printer on for 10 to 20 minutes If the toner cartridges are opened soon after being moved from a cold room to a warm room condensation may appear inside the cartridge and may cause various problems Be sure to instruct the user that it is necessary to leave the printer for one to two hours at a room temperature to allow it to acclimatize to the temperature 5 1 2 Test Print 5 1 2 1 Test Print 0005 8741 The machine is capable of generating engine test prints If the machine has suffered a fault generate a test pint to help identify the location of the fault When the engine test print is made a test print pattern horizontal lines in four colors magenta cyan yellow and black is printed a
103. ed as the feed roller keeps pushing it when it is pushed against the shutter 2 The shutter is lifted up by the stiffness of paper as paper warps and paper passes through the shutter 3 It allows the skew of paper to be corrected 2 35 Chapter 2 fom Registration shutter 2 5 2 2 Feed speed control In this control a feed speed is changed based on the types of the fed paper in order to prevent fixing defects The DC controller changes a feed speed in two levels based on a paper type specification command sent from the video controller Types of paper and their feed speeds are indicated below 2 3 T 2 3 Media type Print type Feed speed Plain paper Full color Normal speed Mono color Heavy paper Full color Mono color OHP sheet m Mono color Thick paper Full color Mono color Special paper Full color Half speed Mono color Envelope Full color Mono color Label Full color Mono color 2 36 0005 8818 Chapter 2 2 5 2 3 Internal temperature detection 0005 8819 This printer utilizes a function of detecting the internal temperature in order to prevent a temperature rise in it The internal temperature detection thermistor TH3 is provided for this function If the DC controller detects that the internal temperature exceeds the temperature ceiling Td by the TH3 in continuous printing it widens a space between
104. eeseaeeeseaeeeeseaeeesecaeeeseaeeeseaeesseeeeseeateeseaaes 3 2 15 Sub High Voltage Power Supply PCB u nenne een ne nn shi 3 2 15 1 Removing the Upper Cover Unit coa 3 2 15 2 Removing the Video Controller POB civic ii ee ann 3 2 15 3 Removing the Sub High voltage Power Supply PCB c ccceceeceeeceneeeeeeeeeeeeeaeeeeeaeeeseeaeeeeseaeeeseeaeeeseaaeeeseeeeseceeesenateeseaaes 3 2 16 Door Open Detection Swith 2 cccceecccssceeescecsedeceernesteeeoatecsseneecneesnsensetsaneneduanereepsdesusenensinceseeeeedanseneqeedessecnaseders 3 2 16 1 Removing the Upper Cover Unit 3 2 16 2 Removing the Door Open Detection Switch 4 sr2240snsnnnonnnnnnonannnnnnnnnnnnnnnnnnnnnnnnnnnnnnsnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnn nn 3 2 17 Gooling F an 2 2 2 neh nn ia ii 3 2 17 1 Removingithe YUpper Gover Unit ea nu 3 2 17 2 Removing the amp 00ling Fan n 2 2 2 ea ea Ara aa rl Lan 3 2 18 Internal Temperature Detection Thermistor E 3 2 18 1 Removing the Upper Cover Unit e A alee A natura 3 2 18 2 Removing the Video Controller PCB ccccccccccceceeeeeeeeneeeceaeeeeceaeeeseaeeeeceaeeeseaaeeeseaaeeseeaeeeeseaeeesceeeseeaeeesecaeeeseeeeeeseneeeeseaaes 3 2 18 3 Removing the Internal Temperature Detection Thermistor cccccceeceeeeeeeeeeeeeneeeeeeaeeeeeeaeeeeeeaeeesecaeeeseaeesseeeeseneeeseaaes 3 34 3 3 LASEREXPOSURE SYSTEM uta a kets daa lO deal 3 3 1 Laser Scanner Uni a c
105. egative This bias is applied to the primary transfer roller to return residual toners adhered on the ITB to the photosensitive drum in a warm up or last rotation sequence The values of the primary transfer bias vary according to the DC controller The DC controller changes the amperage of the primary transfer bias according to the PRIMARY TRANSFER CURRENT FEEDBACK TRIS signal sent from the primary transfer high voltage generation circuit and performs rated current control 2 16 Chapter 2 A In full color printing as four toner layers in each colors are piled up on the ITB in primary transfer the holding force of toner weakens as the transfer process progresses for the 1st color 2nd color Therefore after transferring the first color the primary transfer DC positive bias is increased for the toner in the rest of the colors to gain the holding force of the toner 2 4 2 5 Secondary transfer bias generation 0005 8739 The secondary transfer bias is output to transfer a toner image on the ITB onto paper Two kinds of the biases DC positive bias and DC negative bias are generated in the secondary transfer high voltage generation circuit in the high voltage power supply circuit The DC positive bias is output to the secondary transfer roller in toner transfer The DC negative bias is output to it in cleaning The high voltage power supply circuit applies these secondary transfer biases to the secondary transfer roller according to a s
106. emoving the Rotary Drive Unit 34 37 Removing the Developing Rotary Uit eseon oee r i iaa 3 57 3 4 5 8 Removing the Developing Rotary Toner Level Detection PCB oo cece ecseeseecsesescseseeeescseseeeeseseesscsesecaescseecseseussesscseeeassceeeesseseeeeaeas 3 58 3 4 6 Secondary Transfer Roll pis 3 4 6 1 Removing the Secondary Transfer Roller 3 477 Toter Cartridge Motor tridente RR dacs ada tia ii gerne 3 437 Removing the Upper COVE a Rip 34 72 Removing the Rotary Drive it al 3 477 3 Removing ithe Toner Cartridge Motor ita A tesa Qe pre 3 4 8 Waste Toner Detection PC Bis erishni reelle LER a AA a Ai Ia ade 3 4 8 1 Removing the Upper Cover Unita 3 4 2 2 Altered See hea A rae a 3 4 8 2 Removing the Video Controller PEB criminales 3 4 8 3 Removing the Waste Torier Detection PB iia 3 63 3 4 9 Rotary Drive Will asenet a E a E E Rn A ia 3 4 9 1 Removing the Upper Cover Unit Contents 34 92 Removing the Video Controller PEB io sca tices aie aenea E a en beceus suse acen doo 3 66 3 49 3 Removing the Rotary Drive Ud A e ute 3 66 314 10 Engaging Mottin a de 3 67 34 10 Removing the Left Coi A HH agate dean A rei 3 67 3 4 10 2 Removing the Engaging Motor little tii ii asad eee eS 3 67 3 4 11 Density Detection PCB 3 4 11 1 Removing the right cover 3 4 11 2 Removing the Left Cover 3 4 11 3Removing the Density Detection PCB iii A ab 3 67 34 12 ITB Home Position Detection PEB y isoce 32 na san na
107. eplace the ITB home position sensor Replace the DC controller PCB E078 5 4 secondary transfer roller drive mechanism fault Check the connector of the roller drive sensor Check the connector of the roller drive clutch Replace the main drive assembly roller Drive sensor Replace the drum cartridge roller drive cam Replace the DC controller PCB 0005 8934 Chapter 5 E100 scanner fault Check the connector of the laser scanner assembly Replace the laser scanner assembly Replace the DC controller PCB E196 DC controller memory fault Replace the DC controller PCB E197 engine communication error Replace the DC controller PCB E747 video controller memory fault Replace the video controller PCB E805 fan fault Check the connector of the cooling fan Replace the cooling fan Replace the DC controller PCB 5 5 Chapter 5 5 4 Sevice Mode 5 4 1 Outline 5 4 1 1 Outline 0005 8824 Service mode is offered exclusively for servicing the machine as when checking its condition Enter the appropriate ID from the keyboard of a PC to bring up a menu on the printer status window screen Canon LASER SHOT LBP 2410 Job Option Help Preferences Register Paper Size Consumables Counters Refresh Utility gt Counter Details i Service Settings j Pulse Width Modulation Printing Job Document name User name Computer
108. equence The following are the biases applied at each sequence Print bias DC positive This bias is applied to the secondary transfer roller to transfer a toner image on the ITB onto paper in a print sequence Cleaning bias DC negative This bias is applied to the secondary transfer roller to return residual toners adhered on the secondary transfer roller to the ITB in a warm up or last rotation sequence The values of the secondary transfer bias vary according to the DC controller The DC controller changes the amperage of the secondary transfer bias according to the SECONDARY TRANSFER CURRENT FEEDBACK TR2S signal sent from the secondary transfer high voltage generation circuit and performs rated current control 2 4 2 6 Auxiliary ITB cleaning bias generation 0005 8740 The Auxiliary ITB cleaning bias is output to prevent residual toners on the ITB from falling on a paper path Two kinds of the biases DC positive bias and DC negative bias are generated in the auxiliary ITB cleaning high voltage generation circuit in the sub high voltage power supply circuit The DC positive bias is output to the auxiliary ITB cleaning roller to charge residual toners on the ITB positively The DC negative bias is output to the auxiliary ITB cleaning roller to clean negatively charged residual toner on the roller The Sub high voltage power supply circuit applies these auxiliary ITB cleaning biases to the auxiliary ITB cleaning roller during the cleaning peri
109. er Unit 0007 8198 1 Open the upper cover unit 2 Remove the screw 1 and unhook the two claws 2 3 Pull the bottom of the left cover 3 toward you and slide it in the direction of under to remove it 2 F 3 52 4 Remove the screw 1 and unhook the two claws 2 5 Pull the bottom of the right cover 3 toward you and slide it in the direction of the arrow to remove it Chapter 3 2 F 3 53 F 3 57 6 Open the face up cover 12 Remove the screw 1 black and detach the upper cover 2 from 7 Unhook the claw 1 and remove the I O cover 2 from the printer the machine MIA F 3 54 8 Unhook the two claws 1 Slide the rear cover 2 downward and remove it a A When attaching the upper cover be sure that you tighten the screw black you removed in step 5 at its correct location When attaching the upper cover be sure that you match the 2 positioning lugs 1 of the upper cover with the 2 notches in the face up auxiliary cover At this time check to make sure that the paper retainer 3 does not block the paper path F 3 55 9 Unhook the claw 1 and remove the link gear 2 10 Remove the link lever 3 from the shaft 4 F 3 56 11 Remove the three screws 1 Chapter 3 3 2 9 2 Removing the Control Panel 0007 8199 1 Free the claw 1 and disconnect the connector 2 then detach the control panel for the machine A Be
110. er is turned on and DC power is supplied from the power supply unit to the DC controller PCB the CPU starts to control the operations of the printer Then when the printer enters the standby status the CPU drives loads such as the laser diodes motors solenoids etc based on a print command and image data input from the video controller 2 43 Chapter 2 DC controller Laser scanner unit a Fi E 7 Toner cartridge HVT l l a Hk Sub H V T 7 Scanner emor y tag _ motor 1 Drum cartridge Memory tag Main motor Switch x 1 Sensors x 8 Solenoids x 2 Clutches x 2 I Power supply unit Fixing unit Fixing control circuit Low voltage power supply circuit Developing Developing rotary motor driver IC rotary motor 1 1 l T 1 l T 1 Toner 1104 cartridge Toner cartridge Internal motor 7 motor driver IC temperature detection IC 106 thermistor 1 p mer driver IC i EE AC line E A IC 107 Cc Multiple control lines ngaging a KI motor N Engaging motor gt Single control line driver IC 2 8 2 2 Operations 0005 8711 a CPU IC101 A 16 bit single chip microcomputer is used for a CPU It has a built in ROM and RAM It controls the following operations according to a program stored in th
111. ermistor TH2 The TH1 is to control the print temperature and between sheets temperature It is placed contacting inside surface of the fixing sleeve and monitors the sleeve temperature The TH2 is to control the start up temperature It is in contact with the fixing heater and detects the temperature rise at the end As the surface temperature of the fixing heater rises the resistances of both thermistors reduce and the voltage of the FIXING HEATER TEMPERATURE DETECTION signals FSRTH1 FSRTH2 varies in analog form The CPU IC101 in the DC controller monitors the voltage of these two signals FSRTH1 FSRTH2 and accordingly outputs the FIXING HEATER DRIVE signal FSRD Based on this signal the fixing heater drive circuit controls and maintains the fixing heater at the specified temperature This control system is divided into the following five fixing sequences 1 Start up temperature control This control is to determine the start up temperature of the fixing heater according to its temperature detected by TH2 upon energization If the heater is energized within 30 seconds after a print is completed the start up temperature is determined according to the last printing temperature The fixing heater on for a specified time before it drives the feed motor if the heater temperature is below 55 deg C at the start of fixing heater drive detected by TH2 It drives the motor after the fixing heater is left on for the prescribed time period 2 Prin
112. eseseescsesseesscseeseesseeseevscseeeesaeseees 3 77 3 5 4 Manual Separation P d une nennen desdesdesdestvudesivusbsadesssadad ne decida do ibn 3 77 3 5 4 1 Removing the Pick up Roller Protect Cover 3 77 3 342 Removing the Let Cover ar Neda dd ide 3 77 3 5 4 3 Removing the Front Cover Unit rare E Ana AE 3 77 33 44 Removing the Separation Pada n ae E aia Moe a da te ee ate ll eee o gd do 3 77 3 5 5 Registration Detection POB iii deidad 3 78 3 5 3 Removing the Upper LOS 3 78 3 5 5 2 Removing the Control Panel 3 79 39 3 3 Removme the Video Controller PCB ni n ee ates e 3 79 3 5 9 4 R movme the Registration Detection PEB ss scseisss sess 5 34 nenne EAE ERORE PRE REA N A EA N E EEE Ea TA REOSE 3 80 3 5 6 Registration Roller Unit 3 5 6 Removingithe Upper Cover UI A ia 3 5 6 2 Removing the Control Panel sen Iran ER RE ia IDEE ARAA O 3 5 6 3 Removing the Video Controller PCB Hei LIE ie 3 5 6 4 Removing the Front Cover Ult E 3 5 6 d Removing the Main Drive Unit fernen IA 3 5 6 6 Removing the Registration Shutter Unit 3 5 6 7 Removing the Registration Roller Uat beds 33557 Registration Cl tchy 2 u cceees a A A nan d 3 57 21 Removing the Upper Cover Ut aa 33 1 2 Removing the Video Controller PCB A A A AAA 3 3 1 3 Removing th Registration Clutchs 222 sass vedas 822 aa id oes ais 3 5 8 Registration Shutter Writ 52 23 22 38 2 E E EA EE E E pen S EEEE EE EAA A ES E 3 38 L Removing the Reg
113. essary 4 5 3 Mylar sheet 0005 8685 If necessary clean the mylar sheet with a firmly squeezed wet soft cloth 4 5 4 Pressure Roller fixing assembly 0005 8687 If you have replaced the cartridge or the fixing assembly clean the pressure roller as follows 1 Open the multifeeder tray 2 Open the face up delivery tray 3 Place a single sheet of A4 or LTR print paper in the multifeeder tray 4 On a PC to which the machine s software has been installed bring up the Printer dialog box 5 Select Canon LASER SHOT LBP 2410 or Canon LBP5200 and select Properties if for Windows 98 Me or Print Setup if for Windows 2000 XP 6 From Setup Page select Display Print Status Window 7 From Option select Utilities and then Cleaning Canon LASER SHOT LBP 2410 Job Options Help Preferences Register Paper Size IK Consumables Counters Be Refresh lt a utility Cleaning reg Calibration zl Print Job Detail mf o Document name User name Computer name F 4 3 8 See that a cleaning page is generated in a while 9 Place the cleaning page in the multifeeder tray with its printed side facing down and the arrow toward the rear Chapter 4 F 4 4 Take care Once the machine starts cleaning you will not be able to stop it in the middle It take about 3 min to clean the fixing assembly i e from when you have placed the cleaning paper in the manual feed tray to whe
114. follows with system 1 250 sheets paper feeder PF 87 LBP 2410 2 250 sheets paper feeder PF 96 LBP5200 The Japanese model of LBP5200 comes equipped with a PF 96 as standard 1 2 Chapter 1 1 3 Product Specifications 1 3 1 Product Specifications Body installation method Desktop paper printer Photosensitive medium OPC drum Exposure method semiconductor laser Development method Mono contact development Development method Color contact development Transfer method Primary transfer by transfer belt Transfer method Secondary transfer transfer roller Separation method curvature Cassette pickup method by separation pad cassettes pickup mechanism standard with Japanese model Multifeeder pickup method by separation pad Drum cleaning method by blade Trasnsfer cleaning method by cleaning roller Fixing method on demand fixing Delivery method face down face up if the paper is less than 140 mm in length face down delivery is not available because of the distance between delivery rollers Toner type non magnetic 1 component dry toner Toner supply type by toner cartridge about 4 000 prints for Y M C A4 single sided image ratio of 5 the color toner cartridge that comes with the machine is good for about 2 000 prints about 5 000 prints for Bk A4 single sided image ratio of
115. ge Has Occurred to the Data on the Lives of Parts 2 27 Chapter 2 DC controller Memory tag contact Memory tag Drum cartridge F 2 35 2 4 6 4 Detecting the ITB Home Position 0005 8758 The machine checks the ITB home position to ensure the correct image write start position using the ITB home position sensor PS71 which checks the position with reference to the home position detection faces 4 light blocking faces found on the edge of the ITB belt as follows 1 When it receives the print command the DC controller starts to rotate the ITB belt When PS71 detects a light blocking face it sends TOPSNS to the DC controller 2 The DC controller assumes the first TOPSNS signal to indicate the home position HP1 and increases the count each time a new light blocking face is detected HP2 HP3 HP4 3 In the case of full color operation the DC controller uses these signals to generate the vertical sync signal TOP 4 times and sends them to the video controller Thereafter the DC controller receives video data of each color from the video controller 4 times and draws images of individual colors on specific points on the ITB The DC controller monitors the TOPSNS signal at all times and will identify a fault in the ITB home position sensor in the event of the following condition as a result it will stop the printer engine and at the same time will communicate the nature of the fault to the video controller
116. he 2 notches in the face up auxiliary cover At this time check to make sure that the paper retainer 3 does not block the paper path F 3 351 9 Unhook the claw 1 and remove the link gear 2 10 Remove the link lever 3 from the shaft 4 F 3 352 11 Remove the three screws 1 3 62 Chapter 3 The enlargement of paper retainer 3 4 8 2 Removing the Video Controller PCB 0007 8618 1 Remove the seven screws 1 and detach the shield cover F 3 355 A 1 Be sure to install the top cover unit with the drive release lever 1 pulled up drive release status and then install the link lever 2 F 3 358 2 When installing the drum cartridge in the printer with the top cover unit removed be sure to do so after pulling up the drive release lever 2 Remove the four screws 1 and disconnect the three connectors 2 1 securely drive release status When the lever is pulled down drive status the coupling 2 is pushed out Therefore the shaft of the drum cartridge may hit the coupling and may damage the coupling then detach the interface connector PCB 3 from the machine F 3 359 A If you have replaced the video controller PCB be sure to go through the following 1 Execute PWM adjustment in service mode 2 Remove the existing EEPROM IC6 and mount it to the new PCB 3 4 8 3 Removing the Waste Toner Detection PCB 0007 6076 1 Remove the 6 screws 1
117. he coupling and may damage the coupling then detach the interface connector PCB 3 from the machine 3 F 3 139 A If you have replaced the video controller PCB be sure to go through the following 1 Execute PWM adjustment in service mode 2 Remove the existing EEPROM IC6 and mount it to the new PCB 3 2 14 3 Removing the Sub High voltage Power Supply PCB 0007 8475 1 Remove the 2 screws 1 and disconnect the 2 connectors 2 Remove the sub high voltage power supply PCB 3 together with its PCB holder 3 25 Chapter 3 2 3 Unhook the 4 claws and detach the sub high voltage power supply F 3 143 PCB 3 from the PCB holder 2 uc i 4 Remove the screw 1 and unhook the two claws 2 1 Connectors 5 Pull the bottom of the right cover 3 toward you and slide it in the direction of the arrow to remove it F 3 141 2 3 2 14 4 Removing the High voltage Power Supply PCB F 3 144 5 0005 9006 6 Open the face up cover 1 Unhook the six claws 1 and remove the two screws 2 disconnect 7 Unhook the claw 1 and remove the I O cover 2 from the printer the connectors 3 Remove the high voltage power supply PCB 4 from the lower case unit E 4 F 3 145 F 3 142 8 Unhook the two cl 1 Slide th 21d d and 3 2 15 Sub High Voltage Power Supply PCB remove it Ao rg gig paren gia 3 2 15 1 Removing the Upper Cover Unit 1 0007 8476 1 Open the upper cover unit 2
118. he following 1 The DC controller rotates the four sided mirror when a print command is sent from the video controller and then rotates the scanner motor 2 When the scanner motor starts to rotate the DC controller emits light from the laser forcefully with the LASER CONTROL signal and then starts to control the rotation of the scanner motor 3 The DC controller rotates the motor at a specified speed with the SCANNER MOTOR SPEED CONTROL signal 4 The DC controller sends the VIDEO signals to the laser driver circuit after the rotational speed of the motor reaches its target value 5 The laser driver PCB emits light from the two laser diodes according to these signals 6 The two laser beams strike the four sided mirror rotating at a specified speed through the collimator lens and cylindrical lens 7 The laser beams reflected off the four sided mirror focus on the photosensitive drum through the focus lens and reflective mirror located in front ofthe four sided mirror 8 When the four sided mirror rotates at a constant speed the laser beam striking the photosensitive drum scans on the drum at a constant speed 9 When the photosensitive drum rotates and the laser beam scans on the photosensitive drum at each specified speed a latent image is formed on the drum A Twin beam method Two laser diodes LD1 LD2 are built into the laser unit In one scanning operation the laser unit emits light from the LD1 and LD2 and writes two lines simult
119. he memory tag contact makes contact with the memory tag in the cartridge constantly when the cartridge is installed in the printer The waste toner detection is performed by an LED light emitter and a photodiode light receiver on the waste toner detection circuit The functions and controls of the cartridge are discussed next 2 4 6 2 Cleaning roller engaging control 0005 8751 In this control the two rollers the ITB cleaning roller and auxiliary ITB cleaning roller are engaged disengaged from the ITB to clean residual toners on the ITB The operations of this control are described in the following 1 At printing the DC controller checks that the two rollers ITB cleaning roller and auxiliary ITB cleaning roller are at their home positions Note 1 in secondary transfer roller position detection 2 At the timing of the start of secondary transfer the DC controller let out the roller engaging clutch CL2 This transmits the drive of the main motor DCM701 to the engaging cam Then the roller bushing is pushed out and the two rollers start to engage to the ITB 3 At this point the DC controller is monitoring the output of the PS714 When the output becomes L it lets out the CL2 This allows the cam to stop and the two rollers to stop at each engaging position 4 After a print operation the DC controller let in the CL2 again for 0 2 seconds This disengages the two rollers from the ITB 5 The DC controller monitors the output
120. he two claws 2 3 Pull the bottom of the left cover 3 toward you and slide it in the direction of under to remove it AMY 3 2 F 3 291 4 Remove the screw 1 and unhook the two claws 2 5 Pull the bottom of the right cover 3 toward you and slide it in the direction of the arrow to remove it Chapter 3 2 F 3 292 F 3 296 6 Open the face up cover 12 Remove the screw 1 black and detach the upper cover 2 from 7 Unhook the claw 1 and remove the I O cover 2 from the printer the machine MIA F 3 293 8 Unhook the two claws 1 Slide the rear cover 2 downward and remove it a A When attaching the upper cover be sure that you tighten the screw black you removed in step 5 at its correct location When attaching the upper cover be sure that you match the 2 positioning lugs 1 of the upper cover with the 2 notches in the face up auxiliary cover At this time check to make sure that the paper retainer 3 does not block the paper path F 3 294 9 Unhook the claw 1 and remove the link gear 2 10 Remove the link lever 3 from the shaft 4 F 3 295 11 Remove the three screws 1 3 53 Chapter 3 F 3 300 3 4 5 2 Removing the Control Panel 0007 8631 1 Free the claw 1 and disconnect the connector 2 then detach the control panel for the machine F 3 298 A Be sure to install the top cover unit with the
121. hook the two claws 1 Slide the rear cover 2 downward and remove it F 3 10 3 2 4 Upper Cover 3 2 4 1 Removing the Upper Cover Unit 0005 8712 1 Open the upper cover unit 2 Remove the screw 1 and unhook the two claws 2 Chapter 3 3 Pull the bottom of the left cover 3 toward you and slide it in the direction of under to remove it 1 F 3 14 2 9 Unhook the claw 1 and remove the link gear 2 F 3 11 10 Remove the link lever 3 from the shaft 4 4 Remove the screw 1 and unhook the two claws 2 5 Pull the bottom of the right cover 3 toward you and slide it in the direction of the arrow to remove it F 3 15 11 Remove the three screws 1 2 F 3 12 6 Open the face up cover 7 Unhook the claw 1 and remove the I O cover 2 from the printer F 3 16 12 Remove the screw 1 black and detach the upper cover 2 from the machine F 3 13 8 Unhook the two claws 1 Slide the rear cover 2 downward and remove it Chapter 3 1 When attaching the upper cover be sure that you tighten the screw black you removed in step 5 at its correct location 2 When attaching the upper cover be sure that you match the 2 positioning lugs 1 of the upper cover with the 2 notches in the face up auxiliary cover At this time check to make sure that the paper retainer 3 does not block the paper path The enlargement of paper retainer OK NG F 3 18
122. huts off the heater 2 Protective function by the fixing heater safety circuit This circuit monitors the output voltages FSRTH1 FSRTH2 of the main sub thermistors When the FSRTHI is approx 0 5 V or less equivalent to 280 deg C or higher or the FSRTH2 is approx 3 0 V or higher equivalent to 315 deg C or higher the relay RL301 is turned off and the heater is shut off 3 Protective function by the thermoswitch The thermoswitch TP gets disconnected to interrupt the current to the fixing heater when it reads the temperature of over 250 deg C Note due to an abnormal temperature rise of the fixing heater A The thermoswitch is placed away from the fixing heater The actual temperature of the fixing heater is higher than the thermoswitch reading 2 6 3 3 Fixing unit failure detection 0007 9315 The CPU determines fixing unit failures under the following conditions 1 3 turns off the relay RL301 shuts off the heater simultaneously notifies the failure to the video controller 1 Abnormal high temperature Abnormal high temperature on the main thermistor If the main thermistor continuously reads 245 deg C or higher for minimum second the CPU judges it abnormally high Abnormal high temperature on the sub thermistor If the sub thermistor continuously reads 290 deg C or higher for minimum 1 5 seconds the CPU judges it abnormally high 2 Abnormal low temperature Low temperature during temperature control If
123. i att 3 3 1 1 Removing the Upper Cover Unit oocooniccconoccccnnocccnonncccononccnnonnccnnnnnn cnn cnn 33 12 Removing the Laser Scanner Unit a Aci 3 4 IMAGE FORMATION SYSTEM 3 4 1 Drum Cartridge Memory Tag Contact 3 4 1 1 Removing the Upper Cover Unico re iR LIE Ede ch seein ips 3 4 1 2 Removing the Video Controller PCB u 224004422400nnnnnonnnnnnnnnnnnnnnnnnnnnnnnnnanannnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnannnnnnnnnnannn 3 4 1 3 Removing the Drum Cartridge Memory Tag Contact ccccceeceeeneeeeeeeeececeeeeeeaeeeceaeeeecaeeessaaeeeceaaeesenaeeesceeessceeesenaeeeseaaes 3 41 3 4 2 Developing Rotary Unit 3 4 2 1 Removing the Upper Cover Unit 3 4 2 2 Removing the Control Panel i hia NET A ah wen 3 4 2 3 Removing the Video Controller PCB 22400442240nnnnnannnnnnnnnnnnnnnnnnnnnnnnnnnnannnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnannnnnnnnnnannn 3 43 3 4 2 4 Removing the Front Cover Unit ccecccceceeseeeeeeneeeeenneeeeeeeeeeeaeeeeaaeeseaaeeeeaaeeesaeeseqeaeeeeeaaeeesaeeeseaeesseaeeesseneeeseeeeeseeeeeeeneaee 3 44 34 25 Removing the Main Drive Unit A ea 3 44 3 4 2 6 Removing Rotary Drive Unit ern ae Eur aed atonal 3 45 3 4 2 7 Removing the Developing Rotary Unit icine siete edie ici 3 46 3 43 Developing Rotary Motor 2220 25 ated eeeek be Ha era taste ac da oh Sate iaa id 3 47 3 4 3 1 Removing the Upper Cover Unit r ee ea rer Aa
124. i oni ss A A A AAA 2 24 2 4 6 Drum Cotidiana lidad loo cad 2 25 HA Outlne EA IAE I ee TASE SEE o RE 2 25 Contents 2 4 6 2 Cleaning rollenengasing control N 2 26 DAL Memory ta Eesaia A AAA Ate tele E ica se Ale ale tao 2 27 24 64 Detecting the 1TB Home Position did ense 2 28 2 4 6 5 Dr m cartridge PESCA sd 2 29 2 4 6 6 Checking the l ife ofthe Drum Cartridge Hu 2 At ii 2 30 2 4 7 Secondary Transfer Mechanism DAT Ve Outline sr E Rab A A ES 2 4 7 2 Secondary transfer roller engaging CO A dia 2 32 2 47 Secondary toller position detec A da 2 33 2 5 Pickup Feeding Delivery System 2 5 1 Overview Conti pura nailon dls ss 2 51 i Quilmes E EE OENE D E E E E Ate shal Ane te 29 2 Other Controversia dot op cba laa li aria EGE 28 2 1 SA AA seese drat lb eeeectayel ies er E T EEE green 2 5 2 2 Feed speed control 2 5 2 3 temperature detections e casts Sede E NN 2793 Detecting Jans esse mens id ZII AL Jat Detecta tage ZIMMER 20 92 BI en AL ni REE E E iaa A AA A dE DI Pick up delay OA 2 5 3 2 2 Delivery delay JM soena ean n laa A N tint A 2 5 323 Station ay ed 2 5 3 3 1 Pick p stationary ja uses siehe NES NN 2 5 3 3 2 Delivery stati aiy A ias PS A TN 2 3 3 4 1 Fixing unit wrapping A dais 28 342 POOL Open Mia di ii DIR paper A A a a 23 4Multpurpose PIU ii iii 2541 MUI di a aaa ZO FIXING UNILL SYSTEM to 2 6 1 Ovetview Conf Suration acia 2 6 1 1 Outline EN 26 2 Various
125. ifies the error to the video controller 2 4 5 5 Toner cartridge life detection 0005 8738 a Outline This detection is utilized to detect whether the toner cartridge has reached the end of its life When the power is turned on or the top cover is closed the DC controller monitors the following two items It determines an toner cartridge end of life if either of the items reaches its specified value a Developing cylinder life usage hour b Toner level The life of the toner cartridge is indicated to the video controller in 2 steps warning end of life the printer engine will be stopped only when the end of life has been reached The life of the developing cylinder and the level of remaining toner are checked as follows b Developing cylinder life detection The life of the developing cylinder is detected by the DC controller monitoring the cumulative usage hours of the developing cylinder which stored in the memory tag Developing cylinder usage hour DC application time data sent from the DC controller is written in the memory tag in the toner cartridge The DC controller updates data with specified timing If updated data developing cylinder cumulative usage hours reaches a specified value the DC controller determines a developing cylinder end of life c Toner level detection This printer utilizes a through beam sensor for toner level detection The toner level is detected by the DC controller monitoring the toner level detection u
126. ing the drum cartridge in the printer with the top cover unit removed be sure to do so after pulling up the drive release lever 1 securely drive release status When the lever is pulled down drive status the coupling 2 is pushed out Therefore the shaft of the drum cartridge may hit the coupling and may damage the coupling he 0007 9009 1 Remove the seven screws 1 and detach the shield cover F 3 500 2 Remove the four screws 1 and disconnect the three connectors 2 then detach the interface connector PCB 3 from the machine 3 86 Chapter 3 F 3 501 A If you have replaced the video controller PCB be sure to go through the following 1 Execute PWM adjustment in service mode 2 Remove the existing EEPROM IC6 and mount it to the new PCB 3 5 7 3 Removing the Registration Clutch 0005 8991 1 Remove the 6 screws 1 and detach the shield mount 2 F 3 502 2 Disconnect the connector 1 and remove the E ring 2 Remove the registration clutch 3 NS O K o a F 3 503 3 5 8 Registration Shutter Unit 3 5 8 1 Removing the Registration Shutter Unit 0005 8782 1 Open the top cover unit 2 Remove the two screws 1 and the registration shutter unit 2 2 F 3 504 3 5 9 Front Fixing Paper Detection Sensor 3 5 9 1 Removing the Upper Cover Unit 0007 9011 1 Open the upper cover unit 2 Remove the screw 1 and unhook the two claws
127. istration Shutter Units aasin iraia ARANEAE EEN a 3 5 9 Front Fixing Paper Detection Sensor cccesesessesssescesseseeeeseeseceecsseesessesaecaecssessensecsecsecsecseeseeseceeseecueseasseaeeaecaecaecaecaeeaaeaaeaaeate 3 5 9 1 Removing the Upper Cover Unai did little 3 5 9 2 Removing the Video Controller PCB 3 5 9 3 Removing the Front fixing paper detection sensor ceccsescersesssessceresserecadensnnesosetesoconsstenecoseecenenessescensensedescesseaesasaneneseeavacensnsenaeacesensensens 3 89 3HEIXING SYSTEM Re ves dnlase cos suscesdesindads cece Sedneucadsnas cvuds snensashensSued ice sees E E eauseeatsespaseoodents 3 91 376 1 Fixing Film Unit 2238 2 2 SS a adds SR ES es es 3 91 Contents 3 6 1 1 Removing the Face up Cover 3 91 3 06 12 Removing the Fixing Film Units A A tates Acne sean 3 91 3 6 2 Fixing Pressure Roller neruos riscon ta oriire te Ee EE EAA Ei EA ESEESE AE a i 3 92 3 6 2 Removing the Fac Cor R RAA E A RE 3 92 3 6 22 Removing the Frung Film Unit enneh A SERE senses E E ATEO IONET 3 93 326 2 3 Removing the Presstire ans Ces 3 94 9 6 3 Delivery Sensor E O OEE E E EE E AAT E E E s 3 94 3 6 3 Removing the Face COVA Aca 3 94 3 6 3 2 Removing the Fixine Delivery Paper Sensor raees oan A EE OE R AR ARAE 3 95 3 64 Fixing MOto ici A A EEE EEEE EANA EEE E aiai 3 95 3 6 4 1 Removing the Upper Cover Unit 3 95 3642 Removing the Interface Controller PEB tii asii iaa ias 3 97 36 4 3 R moving the Fixing
128. ivery idle gear shaft holder 2 in the direction of the arrow and remove the holder together with the delivery idle gear shaft 3 F 3 539 5 Remove the 4 screws 1 unhook the 3 claws 2 and remove the fixing top cover 3 F 3 540 A Make sure that the 2 springs are fitted onto the bosses on the fixing top cover when reassembling the cover See the figure for the correct positions of the boss and springs shown on the left 150 F 3 541 6 Remove the top separation guide 1 7 Remove the right pressure release lever 2 8 Slide the right pressure plate 4 upward and release the 2 bosses 3 9 Remove the right pressure plate 4 from the fixing unit 1 2 p F 3 542 3 93 Chapter 3 10 Remove the left pressure release lever 1 11 Slide the left pressure plate 3 upward and release the 2 bosses 2 12 Remove the left pressure plate 3 from the fixing unit 1 pe gt 3 aL we 2 F 3 543 13 Remove the 1 screw 1 and unplug the 1 connector 2 2 F 3 544 14 Unhook the 2 claws 1 and unplug the 1 connector 2 F 3 545 15 Remove the 1 screw 1 and slide the fixing separation guide 2 out to the left F 3 546 A Make sure that all cables on the fixing film unit are hooked into the fixing separation guide when reassembling the guide Especially the right side cables are easy to be pinched unless properly
129. lease status When the lever is pulled down drive status the coupling 2 is pushed out Therefore the shaft of the drum cartridge may hit the coupling and may damage the F 3 510 coupling 12 Remove the screw 1 black and detach the upper cover 2 from the machine 3 88 Chapter 3 3 5 9 2 Removing the Video Controller PCB 0007 9012 1 Remove the seven screws 1 and detach the shield cover Ame s gt Dit Ao rt F 3 515 2 Remove the four screws 1 and disconnect the three connectors 2 then detach the interface connector PCB 3 from the machine 3 If you have replaced the video controller PCB be sure to go through the following 1 Execute PWM adjustment in service mode 2 Remove the existing EEPROM IC6 and mount it to the new PCB 3 5 9 3 Removing the Front fixing paper detection sensor 0005 8944 1 Remove the two claws 1 and the toner tray 2 EM r e 11 Q F 3 517 2 Remove the fixing front paper detection sensor roller 1 F 3 518 3 Flip the sheet 1 4 Remove the screw 2 and slide the fixing front sensor unit 3 3 89 Chapter 3 ce u E E E ct r F 3 519 5 Unhook the 2 claws 1 and disconnect the connector 2 to remove the fixing front paper detection sensor 3 off the printer F 3 520 3 90 Chapter 3 3 6 FIXING SYSTEM 3 6 1 Fixing Film Unit 3 6 1 1 Removing the Face up
130. ler PCB 3 F 3 101 3 2 12 Interface Controller PCB 3 2 12 1 Removing the Upper Cover Unit 0007 8193 1 Open the upper cover unit 2 Remove the screw 1 and unhook the two claws 2 3 Pull the bottom of the left cover 3 toward you and slide it in the direction of under to remove it 2 F 3 102 4 Remove the screw 1 and unhook the two claws 2 5 Pull the bottom of the right cover 3 toward you and slide it in the direction of the arrow to remove it 2 F 3 103 6 Open the face up cover 7 Unhook the claw 1 and remove the I O cover 2 from the printer F 3 104 8 Unhook the two claws 1 Slide the rear cover 2 downward and remove it F 3 105 9 Unhook the claw 1 and remove the link gear 2 10 Remove the link lever 3 from the shaft 4 F 3 106 11 Remove the three screws 1 3 19 Chapter 3 F 3 107 12 Remove the screw 1 black and detach the upper cover 2 from the machine The enlargement of paper retainer OK F 3 109 A 1 Be sure to install the top cover unit with the drive release lever 1 pulled up drive release status and then install the link lever 2 2 When installing the drum cartridge in the printer with the top cover unit removed be sure to do so after pulling up the drive release lever 1 When attaching the upper cover be sure that you tighten the screw 1 securely drive release status When the lever is pulle
131. linder and toner motor PM705 stirrer Cooling fan Intakes air to cool down DC 1 speed Yes FM721 around the fixing unit motor low voltage power supply high voltage power supply and cartridge 2 8 2 4 Main motor control 0005 8720 This control is utilized to drive the main motor DCM701 The DCM701 a three phase eight pole DC motor with a built in drive circuit drives each roller used for paper feed and image formation The DC controller drives the motor by controlling the MAIN MOTOR ACCELERATION MAIMACC signal and MAIN MOTOR DECELERATION MAIMDEC signal The illustration below shows the control circuit of the motor 2 45 Chapter 2 DC controller Main motor 24VB lur10 8 24VB J701 1 5 mamacc 4 DCM701 6 MAIMDEC 3 3 3V l i L 7 MAIMFG 2 4 24VGND 5 The operations of the main motor are discussed next The CPU in the DC controller rotates the motor by setting the MAIMACC signal L through the ASIC The CPU monitors the MAIN MOTOR SPEED DETECTION MAIMFG signal The CPU out puts the MAIMACC signal when the motor does not reach specified revs and outputs the MAIMDEC signal when it exceeds a specified rev Then the CPU controls these signals to adjust the motor revs to a specified value The CPU determines a main motor failure then stops the printer and notifies the failure to the video controller under the following co
132. ll la ALAS a nes 2 24 DASS Loner cartridge life detection ea een id AID 2 24 2 46 Drum Cartridge saccussdecSice ces ssocgphede seen thie aiae ao ed 2 25 O CO TS E OCT 2 25 2 4 6 2 Cleaning roller engaging control iiihana k a a e aa aaa a aadA aeaa Ea ARa EA ada a a edas aaea aaa iadaa aa A iea 2 26 2463 Memory tage en a ido 2 27 2 4 6 4 Detecting the ITB Home Positions iced sia seein ani A it et 2 28 2 4 6 5 Drum cartridge presence detection ccccccecceeseeeeeeeeeeeaeeeeeaaeeeeeaeeeeeaaeeeseaaeeesaeeeeqaeeeseaeeessaaeeeseaaeeeseaeeeeseaeeseeeeeseneeeeteeae 2 29 2 4 6 6 Checking the Life of the Drum Cartridge oooonccconnnccccnoccconoocccnnnnccnnnonnconanoccnnnnncnnnnn cnn name cnn nn nan n nn ana cnn nn nn nana rca naar cn nana cn nnnnnes 2 30 2 4 7 Secondary Transfer N 2 31 A a ieee ade eee TEE REGEN ORO O OA 2 31 2 4 7 2 Secondary transfer roller engaging contro 2 224400442400nnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnannnnnnnnnnnnnannnnnnnnnnnnnnnnnann 2 32 2 4 7 3 Secondary roller position detection 22400422400nnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnn 2 33 2 5 Pickup Feeding Delivery System uuusssnneessnnnnnnnnnnennnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnsnnnnnnnnnsnnnnnnnnnsnnnnnnnnsnnnnnnn 2 35 2 5 1 OVerview Configurationz 2 32h essen Es Ehe 2571 L OUINe rs A E 2 5 2 Other Control 2 5
133. m cartridge communication start EP 87 toner cartridge presencellife check EP 87 drum cartridge presencellife check Scanner motor initial drive Scanner motor initial drive check Maximum image density control D max Halftone calibration detection control D half Image stabilization ____z __ zum gt AAA y calibration control Standby Residual paper door open Failure check period check period F 2 2 2 3 Chapter 2 2 3 LASER EXPOSURE SYSTEM 2 3 1 Overview Configuration 2 3 1 1 Outline 0005 8822 The laser scanner system forms a latent image on the photosensitive drum according to the VIDEO signals sent from the video controller This system consists of the laser driver circuit scanner motor etc They are integrated into the laser scanner unit and controlled by the DC controller The laser scanner unit is illustrated in the figure below and the sequence is described in the following Video controller circuit VIDEO signals SCANNER MOTOR DC controller CONTROL signal LASER CONTROL signal Four sided mirror VIDEO signals Scanner Focus lenses motor Reflective mirror Laser driver F 2 3 The laser scanner unit adopted a twin beam method Note which scans two lines simultaneously with two laser diodes for high speed laser scanning with the motor revs restrained The operation sequence of the laser scanner unit is discussed in t
134. n the direction of under to remove it Chapter 3 9 Unhook the claw 1 and remove the link gear 2 10 Remove the link lever 3 from the shaft 4 2 F 3 180 F 3 184 4 Remove the screw 1 and unhook the two claws 2 5 Pull the bottom of the right cover 3 toward you and slide it in the direction of the arrow to remove it 11 Remove the three screws 1 2 F 3 185 F 3 181 12 Remove the screw 1 black and detach the upper cover 2 from the machine 6 Open the face up cover 7 Unhook the claw 1 and remove the I O cover 2 from the printer F 3 182 8 Unhook the two claws 1 Slide the rear cover 2 downward and remove it A 1 When attaching the upper cover be sure that you tighten the screw m black you removed in step 5 at its correct location 2 When attaching the upper cover be sure that you match the 2 positioning lugs 1 ofthe upper cover with the 2 notches in the face up auxiliary cover At this time check to make sure that the paper retainer 3 does not block the paper path 3 33 Chapter 3 The enlargement of paper retainer F 3 189 3 2 18 2 Removing the Video Controller PCB gt 0007 8483 1 Remove the seven screws 1 and detach the shield cover F 3 187 A 1 Be sure to install the top cover unit with the drive release lever 1 pulled up drive release status and then install the link lever 2 F 3 190 2 When in
135. n the paper is delivered Do not turn off the power or open the cover during this period of time 4 5 5 Density sensor ITB home position sensor 0005 8689 When replacing the drum cartridge or contamination is found in the printer clean the detection windows of the density detection sensor as well as of the ITB home position detection sensor F 4 5 T 4 3 1 Density sensor 2 ITB home position sensor A The printer may indicate an image defect when density detection sensor or the ITB home position detection sensor is not clean In these cases clean the detection windows according to the procedures shown above Chapter 5 TROUBLESHOOTING Contents Contents 5 1 MEASUREMENTAND ADJUSTMENT St si 5 1 ATC Kies esc AR oravetess 5 1 A Checks essai see NO NN 5 1 5 1 2 A RON 5 1 12T Test Ruan NA A A A A DEREN 5 1 5 1 3 Adjustment of Electrical Components cccccceccescessesseseeseesecsecsecsecacencencescescesceseeseeseeeceecesessessesaeesecseceeceecaaeaaeaaeaaecaecaeeaeeaeeneens 5 1 5 1 3 1 When Replacing the Laser Scanner Assembly and interface controller PCB neesenenesesennenenennenenennnnnnenennenenennnnennnenennnennenenenenneenenn 5 1 5 1 4 Adjustment of Fixing System 5 1 4 1 Checking the nip width of the lower fixing roller 5 2 SERVICE TOOLS 5 2 1 Standard Tools 5 22 Special A re aan ROA 5 2 3 Solvent Oil List 5 3 ERROR CODE IL OU A A A eG 5 3 2 Service Messages 5 4 Sevice M
136. n uses the following symbols to indicate special information Symbol Description PASS Eros Indicates an item of a non specific nature possibly classified as Note Caution or Warning Indicates an item requiring care to avoid electric shocks Indicates an item requiring care to avoid combustion fire Indicates an item prohibiting disassembly to avoid electric shocks or problems Indicates an item requiring disconnection of the power plug from the electric outlet Indicates an item intended to provide notes assisting the understanding of the topic in question Indicates an item of reference assisting the understanding of the topic in question Provides a description of a service mode Provides a description of the nature of an error indication Introduction The following rules apply throughout this Service Manual i 1 Each chapter contains sections explaining the purpose of specific functions and the relationship between electrical and mechanical systems with reference to the timing of operation In the diagrams MEE represents the path of mechanical drive where a signal name accompanies the symbol the arrow indicates the direction of the electric signal A The expression turn on the power means flipping on the power switch closing the front door and closing the delivery unit door which results in supplying the machine with power 2 In the digital circuits 1 is used to indicate
137. nce 2 8 and 4 From Options select Service Mode 5 Select the appropriate menu from among the various menus When the machine has started service mode you must turn off the printer to end it To return to normal mode you will have to turn it off and then on 5 6 Chapter 6 APPENDIX Contents Contents 6 1 OUTLINE OF ELECTRICAL COMPONENTS Pe A ae 6 1 6 11 Cl tch Solenoid ii lei ii D EE cit tt 6 1 LLE A eis eee hee tense NS Seen a as Rn eae E A AU Sees E RRRS 6 1 GV D2 Motor Han A a ais cdta ita 6 1 ATA O RN 6 1 A RON 6 2 E NT 6 2 CLAPEB a A a a da 6 2 GAl POB S a a A e e a a e teen os Ml 6 2 6 1 5 Variable Resistors VR Light Emitting Diodes LED and Check Pins by PCB uceeseesesneessesnenennenensnenenennennne nee 6 3 6 1 5 1 Variable Resistors VR Test Pins Jumpers and Switches risisti eeit an a NE A E A E A SS 6 3 Chapter 6 6 1 OUTLINE OF ELECTRICAL COMPONENTS 6 1 1 Clutch Solenoid 6 1 1 1 Solenoids Clutches 0005 8950 T 6 1 1 Developing rotary stopper solenoid 3 Roller engaging clutch 2 Multi purpose tray pick up solenoid 4 Registration clutch 6 1 2 Motor Fan 6 1 2 1 Motors Fan 0005 8992 T 6 2 1 Engaging motor 4 Fixing motor 2 Developing rotary motor 5 Main motor 3 Toner cartridge motor 6 Cooling fan 6 1 Chapter 6 6 1 3 Sensor 6 1 3 1 Sensor 0005 8901 T 6 3 1 Multi purpose tray paper sensor 2 Fixing delivery pa
138. nd LD2 forcefully The following four controls are performed with the LASER CONTROL signals 1 Laser emission control 2 Automatic power control APC 3 Horizontal synchronization control 4 Image mask control The following describes each control performed in this control 2 3 2 2 Laser emission control In this control the laser diodes LD1 LD2 are turned on off based on the VIDEO signals When the laser drive IC goes into print mode the laser driver PCB turns on the laser diodes with a specified amount of light or turns it off according to the VIDEO VDO1 VDO1 VDO2 VDO2 signals sent from the video controller 0005 8848 2 5 Chapter 2 2 3 2 3 Automatic power control APC 0005 8855 This control is utilized to maintain amount of light emitted from the laser diodes at a specified amount There are two kinds of the APC initial APC Note 1 and between lines APC Note 2 They perform in the same way The control procedures are described below 1 When the laser driver IC goes in to LD1 force on mode the laser driver circuit emits light from the LD1 forcefully 2 The light amount of the laser diode is detected by the photo diode PD Then it is converted to voltage level and compared with the reference voltage voltage level equivalent to a target laser light amount in the comparator 3 The laser driver circuit controls the laser current until the voltage level of the LD1 laser light amount reaches the s
139. nditions 1 The period of the MAIMFG signal does not satisfy a specified period within 100 ms after the start of main motor drive 2 The period of the MAIMFG signal goes out of a specified period continuously for more than seconds after it once reaches the value 2 8 2 5 Developing rotary motor control 0005 8722 This control is utilized to drive the developing rotary motor DCM703 The DCM703 a three phase eight pole DC motor with a built in encoder drives the developing rotary The DC controller drives the motor by controlling the DEVELOPING ROTARY MOTOR ON ROTMON signal and DEVELOPING ROTARY SPEED CONTROL ROTMPWM signal The illustration below shows the control circuit of the motor 2 46 Chapter 2 DC controller Developing rotary motor 5V 24VA DCM703 ROTMON Developing J105 5 to 8 rotary motor gt driver i ROTMPWM IC103 DEVELOPING ROTARY MOTOR DRIVE signal J105 3 ENCSNS1 2 ENCSNS2 Tv Developing rotary E Home position flag J i261 asav Developing rotary 4 ROTHPS home position sensor i PS51 i a a al Developing rotary toner level detection circuit F 2 50 The operations of the developing rotary motor are discussed next The CPU in the DC controller outputs the two signals ROTMON ROTMPWM to the developing rotary motor driver IC103 after receiving a print command The IC103 rotates the DCM703 by outputting
140. nector PCB 3 from the machine 3 43 Chapter 3 3 F 3 234 If you have replaced the video controller PCB be sure to go through the following 1 Execute PWM adjustment in service mode 2 Remove the existing EEPROM IC6 and mount it to the new PCB 3 4 2 4 Removing the Front Cover Unit 0007 8504 1 Unhook the two claws 2 holding the multi purpose tray 1 2 Slide the front cover unit 3 to the left Pull out the front cover unit to the right and remove it off the printer F 3 238 4 Free the 2 claws 1 and detach the inside cover 2 F 3 235 3 4 2 5 Removing the Main Drive Unit F 3 239 0007 8505 1 Remove the 2 screws 1 and detach the control panel mount 2 5 Free the claw 1 and detach the lower front cover 2 F 3 236 F 3 240 2 Remove the 6 screws 1 and detach the shield mount 2 6 Remove the 2 screws 1 and detach the front auxiliary cover 2 3 44 Chapter 3 2 F 3 241 A When installing the main drive unit be sure to pull up the drive release lever 1 drive release status before installing the 18T gear 2 as shown in the figure right side Note that the 18T gear may not engage with the drive release lever if the gear is not placed properly F 3 242 7 Disconnect the connector 1 and remove the E ring 2 Remove the registration clutch 3 on o A The connector on the registration
141. nerates the HORIZONTAL SYNCHRONOUS BDO signal based on the BDI signal and sends the BDO signal to the interface controller 5 The video controller after inputting the BDO signal outputs the VIDEO VDII1 VDI1 VDI2 VDI2 signals to the DC controller so that the starting position in the image horizontal direction is determined A The unblanking period is a period while light is emitted from the laser diodes in non image areas 2 3 2 5 Image mask control 0005 8868 This control is utilized to avoid laser beam emission on the non image areas during periods other than the unblanking period The DC controller let the laser driver IC go into LD force off mode to turn off the laser diodes LD1 LD2 forcefully while the laser beam scans on non image areas during periods other than the unblanking period This status is called an image mask status which the laser diodes LD1 LD2 do not emit light even though the VIDEO VDI1 VDI1 VDI2 VDI2 signals are input during this period Control timing for the image masking is determined based on paper size information sent from the video controller If the length of paper measured with the registration sensor PS711 is longer than paper size information the DC controller puts the image masking forcefully to avoid soiling the secondary transfer roller LEFT RIGHT MARGIN ER MASKING signal _ T1_ MARGIN MASKING 2mm je 2 mm i jo rr Pp aiT 20ms Signal i i y TOP TOP BOT
142. nit structured with a light emitter LED and a light receiver PD 2 24 Chapter 2 Note 1 After the start of a print operation the DC controller emits light from the LED with the LED DRIVE P3 3V signal The light emitted from the light emitter passes through the light guide in the cartridge and enters into the cartridge The light passes through it and again the light guide Then the light is detected at the light receiver and output as the TONER LEVEL DETECTION TONS signal to the DC controller The DC controller detects the toner level from the cumulative detection time of the TONS signal during one rotation of the stirrer in the cartridge The DC controller determines that the toner level is low when the cumulative detection time of the TONS signal exceeds a specified value Note 2 Light guide ge Light emitter Toner cartridge Developing rotary toner level detection circuit LED DRIVE signal P3 3V TONER LEVEL DETECTION signal TONS DC controller Light emitter Light emitter Toner Stirrer Light Light Stirrer receiver receiver lt High toner level gt lt Low toner level gt F 2 32 A Note 1 In full color printing the detection is performed for the cartridges in each color In monochrome printing it is performed just for the Bk cartridge Note 2 If the toner level written in the memory tag is lower than the detected toner level data is not updated
143. nnccnnn nn Rana rear n rara rre 349 2 Removing the Video Controller PCB cui dd 3 4 9 3 Removing the Rotary Drive Unit iio ii dd GARA 34 10 Engaging Motor ii A acia 3 4 10 1 Removing the Left Cove mati A A db 3 4 10 2 Removing the Engaging Motok Wa A A TANA 3 4 17 Density Detection PCB 2 124 215 200 a ea IATA REMOVIDOS COVE A das i Paced See aeons 3 4 11 22Removingithe Left COVE al nd his al ae Shell es ean A eee 3 4 11 3 Removing the Density Detection PCB 0 cccecccccesseeceeeceeceeaeeeeeaeeeeesaeeeeeaaeeeesaaeeeseaeeeeeaeeeseeaeeesaeeesecaeeeseaeeeeseaeeeeseneeeesaees 3 4 12 ITB Home Position Detection PCB 3 4 12 1 Removing the Roht Cover Unit cita eh ee es ye ei en ieee el eee 3 4 12 2 Removing the Left Cover 20u 422400nssnnsunannnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnannnnannnnnnnnnnnnnnnnnnnnnnnnnannnnnnnnnn 3 4 12 3 Removing the ITB Home Position Detection PCB 22440s44440unnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnennnnnnnnnnonnnnnennn nenn 3 68 3 5 PICKUP FEEDING DELIVERY SYSTEM arrar ki nA aE a EE KE EARTE AEE EA AAEE 3 69 3 5 1 Manual Pickup Roller use fee Bon em Bla sie EE a T AE a aT 3 69 3 5 1 1 Removing the Multi purpose Tray Pick up Roller ccccccceeeeeceneeeeeeeeeeeeeeeeeeaeeeeeaeeeeecaaeeseaeeesccaeesecaeessecaeeeseeeeseeeeessaees 3 69 35 2 Manual Paper Ses miii 422455 candies pennies igen odncny baleeed seach tnbca
144. notifies a secondary transfer roller engaging mechanism abnormality to the interface controller A The home position for the secondary transfer roller is the state in which it is disengaged from the ITB 2 33 Chapter 2 2 34 DC controller TR2S ICLRSNS TR2CLD Main motor Roller engaging clutch Roller engaging g detection gear 67 engaging qe Secondary transfer roller Engaging lever F 2 41 Chapter 2 2 5 Pickup Feeding Delivery System 2 5 1 Overview Configuration 2 5 1 1 Outline 0005 8798 The pick up feed system which consists of various kinds of feed rollers plays a role in paper pick up and feeding This printer utilizes the multi purpose tray for a pick up source and the face up tray and face down tray for a delivery source The presence of paper on the multi purpose tray is detected with the multi purpose tray paper sensor PS718 The DC controller drives each roller by controlling two motors two clutches and one solenoid Three photo interrupters PS1 PS711 PS720 on a paper path detect the reach or passage of paper If paper does not reach or pass each sensor unit within a specified period the CPU in the DC controller determines a jam and notifies a jam occurrence to the video controller The configuration of the motors solenoids and sensors are indicated DC controller ra
145. ntroller PCB be sure to go through the following 1 Execute PWM adjustment in service mode 2 Remove the existing EEPROM IC6 and mount it to the new PCB 3 4 1 3 Removing the Drum Cartridge Memory Tag Contact 0005 8843 1 Remove the 6 screws 1 and detach the shield mount 2 F 3 218 2 Unhook the 2 claws 1 Remove the inner cover 2 from the printer by pulling the cover towards you F 3 219 3 Disconnect the connector 1 on the DC controller PCB F 3 220 4 Unhook the two claws 1 Remove the drum cartridge memory tag contact 2 F 3 221 3 4 2 Developing Rotary Unit 3 4 2 1 Removing the Upper Cover Unit 0007 8501 1 Open the upper cover unit 2 Remove the screw 1 and unhook the two claws 2 3 Pull the bottom of the left cover 3 toward you and slide it in the direction of under to remove it 3 2 F 3 222 4 Remove the screw 1 and unhook the two claws 2 5 Pull the bottom of the right cover 3 toward you and slide it in the direction of the arrow to remove it 3 41 Chapter 3 2 F 3 223 F 3 227 6 Open the face up cover 12 Remove the screw 1 black and detach the upper cover 2 from 7 Unhook the claw 1 and remove the I O cover 2 from the printer the machine F 3 224 8 Unhook the two claws 1 Slide the rear cover 2 downward and remove it A 1 When attaching the upper cover be sure that you tighten the
146. o 80 RH Noise 66 dB or less during printing as required by ISO 9296 Power supply rating 110 to 127VAC 10 50 60 2 Hz 220 to 240VAC 10 50 60 2 Hz 0007 9165 1 3 Chapter 1 1 4 Power consumption 871 W or less approx including peaks exceeding 1 sec Maximum Dimensions 482 W x 451 D x 325 H mm Weight body about 15 kg drum cartridge about 2 5 kg toner cartridge about 0 8 kg per cartridge Option Paper Feeder PF 96 Chapter 1 1 4 Name of Parts 1 4 1 External View 3 4 5 6 Facedown tray Operation panel Top cover unit Front cover unit Multi purpose tray Auxiliary tray 9 10 11 12 0005 8421 Test print switch Power switch Rear cover Power receptacle USB connector Expansion board slot Chapter 1 15 T 1 4 13 Toner cartridge slot 15 Developing rotary 14 Drum cartridge slot 1 4 2 Cross Sectional View 0005 8557 21 20 19 18 17 16 15 14 F 1 4 T 1 5 1 Laser scanner unit 13 Separation pad 2 Developing cylinder 14 Registration roller unit 3 Photosensitive drum 15 Secondary transfer roller 4 Primary charging roller 16 Auxiliary ITB cleaning roller 5 Drum cartridge 17 Feed belt Chapter 1 6 ITB 18 Developing rotary 7 Density sensor 19 Toner cartridge 8 Prima
147. ock the paper path e y M Y E F 3 122 3 22 Chapter 3 F 3 123 3 2 13 2 Removing the Video Controller PCB 0007 8206 1 Remove the seven screws 1 and detach the shield cover F 3 124 2 Remove the four screws 1 and disconnect the three connectors 2 then detach the interface connector PCB 3 from the machine F 3 125 A If you have replaced the video controller PCB be sure to go through the following 1 Execute PWM adjustment in service mode 2 Remove the existing EEPROM IC6 and mount it to the new PCB 3 2 13 3 Removing the Power Supply Unit 0005 9008 1 Remove the three screws 1 and disconnect the four connectors 2 Remove the cable guide 3 F 3 126 2 Remove the six screws 1 and the power supply unit 2 from the lower case unit F 3 127 3 2 14 High voltage PCB 3 2 14 1 Removing the Upper Cover Unit 0007 8472 1 Open the upper cover unit 2 Remove the screw 1 and unhook the two claws 2 3 Pull the bottom of the left cover 3 toward you and slide it in the direction of under to remove it Y 3 2 F 3 128 4 Remove the screw 1 and unhook the two claws 2 5 Pull the bottom of the right cover 3 toward you and slide it in the direction of the arrow to remove it 3 23 Chapter 3 2 F 3 129 F 3 133 6 Open the face up cover 12 Remove the screw 1 black and detach the upper cover 2 from 7 Unh
148. od with specified timing 2 4 2 7 ITB cleaning bias generation 0005 8748 The ITB cleaning bias is output to clean the ITB Three kinds of the biases DC positive bias DC negative bias and AC bias are generated in the ITB cleaning high voltage generation circuit in the high voltage power supply circuit The AC bias and DC positive bias are output to the ITB cleaning roller to clean positively charged residual toners on the ITB The AC bias and DC negative bias are output to the ITB cleaning roller to clean negatively charged residual toners on the roller The high voltage power supply circuit applies these ITB cleaning biases to the ITB cleaning roller during the cleaning period with specified timing 2 4 2 8 Fixing Bias Generation 0007 9199 The fixing bias is generated and used to prevent adhesion to the fixing sleeve of toner that is on print paper before fixing takes place The fixing bias is a DC positive bias generated in the fixing height voltage generation circuit of the high voltage power supply PCB It is applied to the pressure roller of the fixing assembly at such times as programmed in advance 2 4 3 Image Stabilizaton Control 2 4 3 1 Outline 0005 8784 This printer performs image stabilization control using the image density detection function see note in order to reduce image density variations caused by changes in environments deterioration of the drum or toner etc Two kinds of the image stabilization controls image densi
149. ode 5 4 1 Outline 5 4 1 1 Outline 5 4 1 2 Starting Service Mode Chapter 5 5 1 MEASUREMENT AND ADJUSTMENT 5 1 1 Initial Check 5 1 1 1 Initial Check 0005 8707 Check the following items before you diagnose malfunction If any failure is found a service engineer is to clear the problem and to give the instruction to a user 1 Installation environment a The power voltage is 10 of the rated voltage b The printer is securely installed on a level surface c The room temperature is kept between 10 and 30 deg C and the relative humidity between 10 and 80 d Avoid sites generating ammonia gas high temperature or high humidity near water faucet kettle or humidifier cold places open flames dusty area and sites the wind blows in from the air conditioning duct e Avoid sites exposed to direct sunlight If unavoidable advise the customer to hang curtains f A well ventilated place g Make sure that the power cord is inserted to the printer and the outlet securely 2 Paper checks a The recommended paper for the printer is used b Paper is not damp c Paper is not dirty 3 Paper sets a The amount of paper in the pick up source is within specifications b Paper is correctly set on the selected pick up source c The size guides are aligned with paper 4 Cartridge sets a Make sure the EP 87 toner cartridges in each color are set in the printer properly b Make sur
150. oller PEB uc vende el 3 2 9 4 Removing the Front Cover Unit r pries aerie ai o EE aaa Eea EE E aa Eaa iaeiae Ea eae a rana 3 2 9 5 Removing the Main Drive Unite bo 3 2 9 6 Removing the Main M O OT 2228222 iaa 3 2 10 Control Pel cirios a ltd ideas 3 2 10 1 Removing the Upper Cover Unitat td bd dt hei 3 2 10 2 Removing ithe Control Pal a 3241 DG Controller PGB o A 3 2 11 1 Removing the Upper Cover Unit 24 244404424000nnnnnnnnannnnnnnnnnnnnnnnnnnannnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnannnnnnnnnnennnnnnnnnnnnnnnnnnnnnnnn 3 2 11 2 Removing the Video Controller PCB Contents 3 2 11 3 Removing the DC Controller PCB c isccer scien eigenen coa 3 18 3 2 12 Interface Controller POB occ un Bine esse 3 19 3 2 12 1 Removing the Upper Cover Unit ee dal detail idad aida 3 19 3 2 12 2 Removing the Video Controller POB ciclo 3 21 3 2 13 Power Supply Board 3 2 13 1 Removing the Upper Cover Unit 3 2 13 2 Removing the Video Controller PCB 244444444004424000nnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnannnnnnnnnnannn nn 3 2 13 3 Removing the Power Supply Unibucicai 2 22 RR BEE 3 2 14 High voltagesPGB i aii A A TE 3 214 Removing the Upper Cover UNI ra 3 2 14 2Removing the Video CONtroller PCB RA 3 2 14 3 Removing the Sub High voltage Power Supply PCB 3 2 14 4 Removing the High voltage Power Supply PCB cccccceceseceeceeeeeeceeeeeeeneeeeesae
151. om the multi purpose tray paper on it is fed into the printer one by one The following describes the multi purpose tray pick up operation 1 When a print command is input from the video controller the DC controller drives the main motor DCM701 to rotate the ITB 2 Within a specified period after the start of the DCM701 rotation the multi purpose tray pick up solenoid SL92 goes on 3 After a lifting plate for the multi purpose tray has moved up the multi purpose tray pick up roller starts to rotate This allows paper on the tray to be fed into the printer 4 After a multiple fed paper is removed with the separation pad paper is sent to the registration roller 5 After the skew of paper is corrected with the registration shutter a feed speed is changed based on a paper type specified from the video controller in feed speed control 6 Then the DC controller let in the registration clutch CL1 within a specified period in ITB home position detection function This allows the drive of the DCM701 to transmit to the registration roller and paper to be fed to the secondary transfer roller 7 The DC controller press the secondary transfer roller against the ITB in secondary transfer roller engaging control Simultaneously it lets in the roller engaging clutch CL2 This allows the drive of the DCM701 to transmit to the secondary transfer roller Toner is transferred onto paper on the ITB and paper is fed to the fixing delivery unit 2 38
152. oner Step 9 Auxiliary ITB cleaning roller charging In this step the holding force of the residual toner on the ITB is strengthened to prevent the toner from falling from the ITB and scattering in the printer A DC positive bias is applied to the auxiliary ITB cleaning roller to charge the residual toner on the ITB positively Then the residual toner is pressed to the ITB ITB Charged residual toner Auxiliary ITB cleaning roller I O O Zoo Bias Residual toner TIT F 2 19 Step 10 ITB cleaning roller charging The residual toner on the ITB is charged uniformly positively in this step A DC positive bias and AC bias are applied to the ITB cleaning roller in order to apply positive charges to the residual toner This will make the next step ITB cleaning easier 2 13 Chapter 2 ITB ITB cleaning roller Charged residual toner DC bias 8 F 2 20 Step 11 ITB cleaning applying a DC positive bias onto the ITB and a DC negative bias onto the drum to return the residual toner to the drum The positively charged residual toner on the ITB is returned to the drum in this step A potential difference is produced between the drum and the ITB by Drum cartridge Waste toner transport plate Screw stl DE Stirrer Waste toner case DC bias negative 77 Residual toner DC bias positive F 2 21 Step 12 Drum cleaning In this step the residual toner
153. only when the three conditions above are satisfied When the DC controller determines a cartridge absence it stops the printer engine and notifies an drum cartridge out to the video controller 2 29 Chapter 2 Video controller DC controller A 2 a a a cc Q E Interrupting areas AS ee TTB home position sensor PS71 My Interrupting areas F 2 37 2 4 6 6 Checking the Life of the Drum Cartridge 0005 8768 a Outline The machine uses the following mechanism to check the life of the drum cartridge When the power is turned on the upper cover is closed or a print job is over the DC controller checks on the following 2 items and will assume that the cartridge has reached the end of its life if any of them reaches a specific value life of photosensitive drum hours of use amount of waste toner The life of the drum cartridge is indicated to the video controller in 2 steps warning end of life the printer is stopped only when the end of life has been identified The following mechanisms are used to detect the end of life of the photosensitive drum and the level of waste toner b End of Life of the Photosensitive Drum The end of life of the photosensitive drum is checked by the DC controller by monitoring how long the photosensitive drum has been used with reference to the data stored in the memory tag The memory tag retains data on the period during which the photosensitive drum has been used i e
154. ook the claw 1 and remove the I O cover 2 from the printer the machine F 3 130 8 Unhook the two claws 1 Slide the rear cover 2 downward and remove it A 1 When attaching the upper cover be sure that you tighten the screw black you removed in step 5 at its correct location 2 When attaching the upper cover be sure that you match the 2 positioning lugs 1 of the upper cover with the 2 notches in the face up auxiliary cover At this time check to make sure that the paper retainer 3 does not block the paper path F 3 131 9 Unhook the claw 1 and remove the link gear 2 10 Remove the link lever 3 from the shaft 4 F 3 132 11 Remove the three screws 1 3 24 Chapter 3 The enlargement of paper retainer NG 3 2 14 2 Removing the Video Controller PCB 0007 8473 1 Remove the seven screws 1 and detach the shield cover F 3 135 A 1 Be sure to install the top cover unit with the drive release lever 1 pulled up drive release status and then install the link lever 2 F 3 138 2 When installing the drum cartridge in the printer with the top cover unit removed be sure to do so after pulling up the drive release lever 2 Remove the four screws 1 and disconnect the three connectors 2 1 securely drive release status When the lever is pulled down drive status the coupling 2 is pushed out Therefore the shaft of the drum cartridge may hit t
155. ors 1 2 F 3 273 3 49 Chapter 3 3 4 4 Developing Rotary Stopper Solenoid 3 4 4 1 Removing the Upper Cover Unit 0007 8519 1 Open the upper cover unit 2 Remove the screw 1 and unhook the two claws 2 3 Pull the bottom of the left cover 3 toward you and slide it in the direction of under to remove it F 3 277 9 Unhook the claw 1 and remove the link gear 2 10 Remove the link lever 3 from the shaft 4 2 F 3 274 4 Remove the screw 1 and unhook the two claws 2 5 Pull the bottom of the right cover 3 toward you and slide it in the direction of the arrow to remove it F 3 278 11 Remove the three screws 1 2 F 3 275 6 Open the face up cover 7 Unhook the claw 1 and remove the I O cover 2 from the printer F 3 279 12 Remove the screw 1 black and detach the upper cover 2 from the machine F 3 276 8 Unhook the two claws 1 Slide the rear cover 2 downward and remove it F 3 280 3 50 Chapter 3 1 When attaching the upper cover be sure that you tighten the screw black you removed in step 5 at its correct location 2 When attaching the upper cover be sure that you match the 2 positioning lugs 1 of the upper cover with the 2 notches in the face up auxiliary cover At this time check to make sure that the paper retainer 3 does not block the paper path The enlargement of paper retainer OK NG
156. osition Detection PCB 3 Remove the screw 2 and disconnect the connector 3 Remove the en ITB home position detection PCB 4 3 4 12 1 Removing the Rght Cover Unit 0007 8605 1 Open the upper cover unit 2 Remove the screw 1 and unhook the two claws 2 3 Pull the bottom of the right cover 3 toward you and slide it in the direction of the arrow to remove it F 3 388 2 F 3 385 3 4 12 2 Removing the Left Cover 0007 8607 1 Open the upper cover unit 2 Remove the screw 1 and unhook the two claws 2 3 Pull the bottom of the left cover 3 toward you and slide it in the direction of under to remove it 2 F 3 386 3 4 12 3 Removing the ITB Home Position Detection PCB 0007 6079 1 Unhook the 2 claws 1 Remove the inner cover 2 from the printer by pulling the cover towards you 3 68 Chapter 3 3 5 PICKUP FEEDING DELIVERY SYSTEM 3 5 1 Manual Pickup Roller 3 5 1 1 Removing the Multi purpose Tray Pick up Roller 0005 8851 1 Open the front cover unit 2 Unhook the claw 1 Remove the pick up roller protect cover 2 3 Pinch the right release claw 1 and slide the right bush 3 in the direction of the arrow 4 Pinch the left release claw 2 and slide the left bush 4 in the direction of the arrow a NE El F 3 390 5 Pull up the multi purpose tray pick up roller 2 as pinching the release claws 1 Remove the roller a CE F 3 391 3 5 2 Manual Pa
157. otective function Shuts off the power supply to the fixing heater when the heater is overheating Failure detection Monitors the abnormalities of the fixing unit and when an abnormality occurs shuts off the heater and notifies it to the video controller The controls and functions in the fixing control circuit are described next 2 6 2 Various Control Mechanisms 2 6 2 1 Fixing Temperature Control 2 6 2 1 1 Heater temperature control 0007 9310 This function detects an abnormal temperature rise of the heater and shuts the heater off This printer utilizes three protective functions performed by the following parts to prevent an abnormal temperature rise of the heater 2 39 Chapter 2 Fixing unit O Power supply unit DC controller PCB oS A He er i i ZEROX i C Zero crossing ii pl 1 i I 24v Main Sub thermistor RL301 i i thermistor TH2 1 i m li il 4 Relay drive I 1 1 I circuit i Thermoswitch it i TP I Fixing heater 1 drive circuit l a Fixing sleeve f f 1 Fixing heater unit 1 N Fixing control safety circuit i Wve circuit i Fixing heater A are H1 i FSRTH2 1 FSRTH1 F 2 46 The fixing heater temperature is monitored by two thermistors the main thermistor TH1 and the sub th
158. ove the link gear 2 10 Remove the link lever 3 from the shaft 4 2 F 3 77 F 3 81 4 Remove the screw 1 and unhook the two claws 2 5 Pull the bottom of the right cover 3 toward you and slide it in the direction of the arrow to remove it 11 Remove the three screws 1 2 F 3 82 F 3 78 12 Remove the screw 1 black and detach the upper cover 2 from the machine 6 Open the face up cover 7 Unhook the claw 1 and remove the I O cover 2 from the printer F 3 79 8 Unhook the two claws 1 Slide the rear cover 2 downward and remove it A 1 When attaching the upper cover be sure that you tighten the screw m black you removed in step 5 at its correct location 2 When attaching the upper cover be sure that you match the 2 positioning lugs 1 ofthe upper cover with the 2 notches in the face up auxiliary cover At this time check to make sure that the paper retainer 3 does not block the paper path Chapter 3 The enlargement of paper retainer OK 3 2 10 2 Removing the Control Panel 0005 8749 1 Free the claw 1 and disconnect the connector 2 then detach the control panel for the machine F 3 84 A 1 Be sure to install the top cover unit with the drive release lever 1 pulled up drive release status and then install the link lever 2 2 When installing the drum cartridge in the printer with the top cover F 3 87 unit remo
159. over 2 from the machine 1 1 F 3 398 i 1 TPS Soe SW A N 1 When attaching the upper cover be sure that you tighten the screw N black you removed in step 5 at its correct location 2 When attaching the upper cover be sure that you match the 2 positioning lugs 1 of the upper cover with the 2 notches in the face up auxiliary cover At this time check to make sure that the paper retainer 3 does not block the paper path e y M Y E F 3 400 3 70 Chapter 3 3 5 2 2 Removing the Control Panel 0007 8977 1 Free the claw 1 and disconnect the connector 2 then detach the control panel for the machine 1 F 3 402 3 5 2 3 Removing the Video Controller PCB 0007 8979 1 Remove the seven screws 1 and detach the shield cover F 3 403 2 Remove the four screws 1 and disconnect the three connectors 2 then detach the interface connector PCB 3 from the machine 3 If you have replaced the video controller PCB be sure to go through the following 1 Execute PWM adjustment in service mode 2 Remove the existing EEPROM IC6 and mount it to the new PCB 3 5 2 4 Removing the Front Cover Unit 0007 8980 1 Unhook the two claws 2 holding the multi purpose tray 1 2 Slide the front cover unit 3 to the left Pull out the front cover unit to the right and remove it off the printer a e 2 m 2 as 1 3
160. oving theVideo Controller PCB ti eee ares Se eed aa ease Vested ded ree O oases 3 43 3424 Removing the Front Cover UM ed 3 44 SAD Removing the Main Drive Unit hae hl 2 mass au rn S D Hanni ro 3 44 3 4 2 6 Removing Rotary Drive Unit 342 1 Removing the Developing Rotaty Unit u 0 n u 2 2 2 A E A EAEE R a ISI Tia 3 46 3 4 3 Developing Rotary Motor ueeesssesseeseessesnssnesnnnnennnnnnnnonnonsonnonsensensennennnsnnnnnnsnnnnnnnnsnnssnnsnnsnosnosnonsensensensensensensensennensnsnnensann 3 47 3 431 Removing the Upper Cover Unit 2 28 O A iS 3 47 3 43 2 Removingth Rotary Drive Ur as Ei 3 49 3 4 3 3 Removing the Developing Rotary Motor essinu nannaa a e E N E E O AE N 3 49 3 4 4 Developing Rotary Stopper Solenoid x IAMA T Removing the Upper Cover Unit argia nne n ita 3442 Removing Rotary Drive Ult 3 4 4 3 Removing the Toner Cartridge Motor 3 4 4 4 Removing the Developing Rotary Stopper Solenoid eee esessesesessscescseseescseseeecseseeescseseeacsesesesscscseaescseesacsceseevacseseeasaseeeecaseeeaeaeas 3 52 3 4 5 Developing Rotary Toner Level Detection PCB 0 eccceesessesseesceseesseseeseeseeseceecsscsscssesaeeaecaecaecaecaseasessessessenscesceseesetseeaeeaeeaeseres 3 52 3 4 5 1 Removing the Upper Cover Unit 345 2 Removing the Control da an testa 3 45 3 Removing the Video Controller PCB A A ena AA 3 54 3 4 5 4 Removing the Front Cover Unit 3 4 5 5 Removingithe Main Drive Unit alien dans Ota pas 3 4 5 6 R
161. ower supply circuit failure due to excessive current flow caused by a short circuit on the load side or abnormal voltage generation When the DC voltage is not output from the low voltage power supply circuit the overcurrent overvoltage protective function may be activated If it is activated turn off the power switch SW1 and rectify problems on the load side Turn back on the switch Be sure not to do so within 3 minutes after turning it off The circuit contains two power fuses FU1 FU2 which break and shut off the power if overcurrent flows through the AC line 2 42 Chapter 2 2 8 ENGINE CONTROL SYSTEM 2 8 1 Construction 2 8 1 1 Outline 0005 8702 The engine control system is the brain of the printer which controls the laser exposure system image formation system pick up feed delivery system and external and control system This system consists of the DC controller video controller The block diagram of the engine control system is illustrated in the figure below Each circuit is described in the following ig a he ee l a er S Engine control system A Laser exposure system e oe NS k Image formation system A Pickup feed fixing system Video controller ee So u f circuit k l Delivery system 1 A a o e a ia 2 8 2 DC Controller 2 8 2 1 Outline 0005 8708 The DC controller which is controlled by the CPU in it controls operation sequences for the printer When the pow
162. per Sensor 3 5 2 1 Removing the Upper Cover Unit 0007 8976 1 Open the upper cover unit 2 Remove the screw 1 and unhook the two claws 2 3 Pull the bottom of the left cover 3 toward you and slide it in the direction of under to remove it 2 F 3 392 4 Remove the screw 1 and unhook the two claws 2 5 Pull the bottom of the right cover 3 toward you and slide it in the direction of the arrow to remove it 2 F 3 393 6 Open the face up cover 7 Unhook the claw 1 and remove the I O cover 2 from the printer 2 F 3 394 8 Unhook the two claws 1 Slide the rear cover 2 downward and remove it 3 69 Chapter 3 9 Unhook the claw 1 and remove the link gear 2 10 Remove the link lever 3 from the shaft 4 F 3 396 The enlargement of paper retainer Ok yr 11 Remove the three screws 1 F 3 399 F 3 397 A 1 Be sure to install the top cover unit with the drive release lever 1 pulled up drive release status and then install the link lever 2 2 When installing the drum cartridge in the printer with the top cover unit removed be sure to do so after pulling up the drive release lever 1 securely drive release status When the lever is pulled down drive status the coupling 2 is pushed out Therefore the shaft of the drum cartridge may hit the coupling and may damage the coupling 12 Remove the screw 1 black and detach the upper c
163. per sensor 3 Developing rotary engaging sensor 4 Front fixing paper detection sensor 5 Roller engaging sensor 6 1 4 PCBs 6 1 4 1 PCBs 0005 9000 6 Waste toner detection PCB High voltage power supply PCB 1 6 2 Registration detection PCB 7 Sub high voltage power supply PCB 3 Density detection PCB 8 Power supply unit 4 ITB home position detection PCB 9 DC controller PCB 5 Developing rotary toner level detection PCB 10 Video controller PCB 6 2 Chapter 6 6 1 5 Variable Resistors VR Light Emitting Diodes LED and Check Pins by PCB 6 1 5 1 Variable Resistors VR Test Pins Jumpers and Switches This section lists only the variable resistors VR LEDs test pins jumpers and switches required for after sales service in the field 0005 8783 All other VRs test pins etc are for the factory use only The adjustment and check using these test pins etc require special tools measuring instruments and high precision Do not touch them in the field 1 ITB home position detection PCB T 6 5 SW No Function Sw201 Test print switch Mar 10 2005 Canon
164. ping Rotary Unit 0007 8639 1 Disconnect the three connectors 1 and unhook the two claws 2 2 Slide the fan duct 3 in the direction of the arrow Remove the cooling fan 4 with the fan duct F 3 319 3 Disconnect the six connectors 1 4 Disconnect the two connectors 1 5 Remove the two screws 2 F 3 321 6 Remove the four screws 1 7 Free the cable 2 from the cable guide 3 then detach the reinforcing plate 4 F 3 322 TA IA A aa F 3 323 9 Press the upper areas of the two rotary holders with a screwdriver inward and make sure that the rotary holders 1 are removed from the printer 3 57 Chapter 3 F 3 324 10 While pushing on the boss 1 rotate the rotary releasing lever left 2 in the direction of the arrow F 3 325 11 While pushing on the boss 1 rotate the rotary releasing lever right 2 in the direction of the arrow 1 j F 3 326 12 Lift up the developing rotary unit 3 in a horizontal position as holding the rotary release levers right 2 and left 1 Remove the unit F 3 327 A When installing the developing rotary unit be sure to check that the 2 leading edges of rotary holders are set on the flame of the printer 3 58 3 4 5 8 Removing the Developing Rotary Toner Level Detection PCB 0007 6080 1 Unhook the four claws 1 Remove the developing rotary toner level detection PCB 2 from the develo
165. ping rotary unit F 3 328 3 4 6 Secondary Transfer Roller 3 4 6 1 Removing the Secondary Transfer Roller 0005 8871 1 Open the upper cover unit 2 Remove the two claws 1 and the toner tray 2 oa ae gt 1 a F 3 329 3 Remove the two screws 1 and the transfer inlet guide 2 F 3 330 4 Unhook the two claws of the right shaft bushing 1 5 Unhook the two claws of the left shaft bushing 2 6 Lift up the secondary transfer roller 2 in a horizontal position and remove it Chapter 3 Ault NG MM t 2 F 3 331 F 3 334 6 Open the face up cover 7 Unhook the claw 1 and remove the I O cover 2 from the printer A When replacing the secondary transfer roller hold the shaft 1 or the roller retainer 2 of the roller Be sure not hold the sponge part 3 of the roller When installing the secondary transfer roller be sure to set the spring inside the boss of the roller retainer to allow the spring to push up the roller retainer 1 3 F 3 335 2 8 Unhook the two claws 1 Slide the rear cover 2 downward and remove it F 3 332 3 4 7 Toner Cartridge Motor 3 4 7 1 Removing the Upper Cover Unit 0007 8532 1 Open the upper cover unit 2 Remove the screw 1 and unhook the two claws 2 3 Pull the bottom of the left cover 3 toward you and slide it in the direction of under to remove it F 3 336 9 Unhook the claw 1 and remove
166. r 25 1 10102 ASIC as el F 2 7 2 3 3 2 Scanner motor speed control 0005 8880 This control is utilized to rotate the scanner motor at a constant speed by the DC controller controlling the scanner motor drive IC The scanner motor which is integral with the scanner motor drive circuit is a 3 phase 12 pole DC brushless motor with a built in Hall device The operations of the scanner motor control are described in the following After receiving a print command the CPU in the DC controller sets the SCANNER MOTOR ACCELERATION ACC signal L through the ASIC and then the scanner motor starts to rotate The BDI signal is sent from the BD circuit as the CPU emits light from the laser forcefully during scanner motor rotation The ASIC compares a period of the BDI signal with the reference clock in the frequency comparator Then it controls the scanner motor revs by controlling the ACC signal and DEC signal until the revs reach a specified value 2 3 3 3 Scanner motor failure detection 0005 8882 The DC controller determines whether the scanner motor rotates at specified revs by monitoring the BDI signal sent from the BD circuit The DC controller determines a optical unit failure or BD error stops the printer engine and notifies the failure to the video controller under the following conditions 1 Optical unit failure If the detected period of the BDI signal does not satisfy a specified range within 20 seconds at scanner motor star
167. r 3 2 7 1 Removing the I O Cover 0005 8743 1 Open the upper cover unit 2 Remove the screw 1 and unhook the five claws 2 3 Pull the bottom of the right cover 3 toward you and slide it in the direction of the arrow to remove it F 3 26 4 Open the face up cover 5 Unhook the claw 1 and remove the I O cover 2 from the printer F 3 27 3 2 8 Main Drive Unit 3 2 8 1 Removing the Upper Cover Unit 0007 8194 1 Open the upper cover unit 2 Remove the screw 1 and unhook the two claws 2 3 Pull the bottom of the left cover 3 toward you and slide it in the direction of under to remove it 2 F 3 28 4 Remove the screw 1 and unhook the two claws 2 5 Pull the bottom of the right cover 3 toward you and slide it in the direction of the arrow to remove it Chapter 3 2 F 3 29 F 3 33 6 Open the face up cover 12 Remove the screw 1 black and detach the upper cover 2 from 7 Unhook the claw 1 and remove the I O cover 2 from the printer the machine MIA F 3 30 8 Unhook the two claws 1 Slide the rear cover 2 downward and remove it a A When attaching the upper cover be sure that you tighten the screw black you removed in step 5 at its correct location When attaching the upper cover be sure that you match the 2 positioning lugs 1 of the upper cover with the 2 notches in the face up auxiliary cover At this time check to make s
168. r to an electrostatic latent image formed on the photosensitive drum This bias is a DC negative bias generated in the developing high voltage generation circuit in the high voltage power supply circuit The bias is applied to the developing cylinder in the toner cartridge with specified timing The values of the developing bias vary according to image density information sent from the video controller This allows the adjustment of image density The developing bias is output to charge toner that was not charged by friction This bias is applied onto the blade in the toner cartridge at a specified timing 2 4 2 4 Primary transfer bias generation 0005 8735 The primary transfer bias is output to transfer a toner image on the photosensitive drum to the ITB in the drum cartridge Two kinds of the biases DC positive bias and DC negative bias are generated in the primary transfer high voltage generation circuit in the high voltage power supply circuit The DC positive bias is output to the primary transfer roller in toner transfer The DC negative bias is out put to it in ITB cleaning The high voltage power supply circuit applies these primary transfer biases to the primary transfer roller according to a sequence The following are the biases applied at each sequence Print bias Note DC positive This bias is applied to the primary transfer roller to transfer a toner image on the photosensitive drum to the ITB in a print sequence Cleaning bias DC n
169. rging A uniform negative potential is applied to the drum surface in preparation for latent image formation in this step The primary charging roller is made with conductive rubber A DC bias is applied to the primary charging roller to keep the potential on the drum surface uniformly Primary charging roller F 2 11 Step 2 Laser beam exposure An electrostatic latent image is formed on the photosensitive drum in this step When the laser beams scan a negatively charged drum surface it causes the charges in areas struck by the laser beams to be neutralized An electrostatic latent image is formed in areas on the drum where the negative charges are eliminated Laser beam Unexposed Exposed areas areas F 2 12 2 4 1 4 Developing block 0005 8938 This block is comprised of two steps see Step 3 and Step 4 In this block the image becomes visible by utilizing a developing method called contact development method where the toner is transferred onto the electrostatic latent image on the drum surface In this method developing cylinder adheres closely to the photosensitive drum to push up the toner Toner development agent used in this printer is non magnetic single component toner composed of resins etc Photosensitive Stirrer Developing cylinder i Z DC bias f DC bias L 77 F 2 13 Step 3 Auxiliary development In this step CPU applies DC bias onto the toner that was not charged by fri
170. rimary transfer Toner on the drum is transferred to the ITB Step 6 Secondary transfer Toner on the ITB is transferred to paper Step 7 Separation Paper separates from the ITB 4 Fixing block Fuses a toner image onto paper Step 8 Fixing 5 ITB cleaning block Cleans residual toner on the photosensitive drum and ITB Step 9 Auxiliary ITB cleaning roller charging Residual toner on the ITB is charged in order to be held on the ITB Step 10 ITB cleaning roller charging Residual toner on the ITB is charged Step 11 ITB cleaning Residual toner on the ITB is transferred onto the drum Step 12 Drum cleaning Residual toner adhered to the drum is cleaned 2 4 1 3 Electrostatic latent image formation block 0005 8935 This block comprises three steps which forms an electrostatic latent image on the photosensitive drum After the completion of the last step in this block negative charges remain in areas on the drum surface exposed to laser beams Negative charges are removed from areas exposed to the laser beams An image with negative charges on the drum is called an electrostatic latent image since it is invisible to the eye Time t gt t 0 i 100 A S A 5 Exposed D areas jo 1 2 R S 500 2 Unexposed lt areas Primary Laser beam Primary Primary charging exposure transfer charging step 1 step 2 step 5 step 1 F 2 10 2 9 Chapter 2 Step 1 Primary cha
171. ry transfer roller 20 Fixing film unit 9 ITB cleaning roller 21 Pressure roller 10 Registration shutter 22 Fixing delivery roller 11 Pick up roller 23 Facedown delivery roller 12 Multi purpose tray 1 4 3 Main Units 0005 8752 1 2 3 F 1 5 T 1 6 1 Laser scanner unit 5 Rotary drive unit 2 Main drive unit 6 Developing rotary unit 3 Registration shutter unit 7 Fixing unit 4 Registration roller unit 1 4 4 Main Parts 0005 8832 8 T 1 7 1 Toner cartridge memory tag contact 8 Temperature fuse 2 Internal temperature detection thermistor 9 Main thermistor 3 Multi purpose tray pick up roller 10 Sub thermistor 4 Separation pad 11 Fixing film unit 1 7 Chapter 1 1 8 5 6 7 Registration roller Secondary transfer roller Drum cartridge memory tag contact 12 Pressure roller Chapter 1 1 5 Using the Machine 1 5 1 Control Panel 0005 8691 The machine is equipped with a control panel on its left side Use it to check the sate of the printer or when replacing any toner cartridge The control panel consists of 4 LEDs and a single operation key each with the following functions 3 Toner D Paper A Alarm O Ready 1 Toner Lamp red ON indicates that the machine is in toner replacement mode flashing indicates that the toner cartridge needs to be replaced or the toner cartridge is not correctly fitted 2 Replace Toner Key
172. s 1 and detach the shield mount 2 F 3 307 4 Free the 2 claws 1 and detach the inside cover 2 5 Free the claw 1 and detach the lower front cover 2 F 3 309 6 Remove the 2 screws 1 and detach the front auxiliary cover 2 3 55 Chapter 3 F 3 310 A When installing the main drive unit be sure to pull up the drive release lever 1 drive release status before installing the 18T gear 2 as shown in the figure right side Note that the 18T gear may not engage with the drive release lever if the gear is not placed properly F 3 311 7 Disconnect the connector 1 and remove the E ring 2 Remove the registration clutch 3 j G on 3 A The connector on the registration clutch side cannot be disconnected When removing the registration clutch be sure to disconnect the connector on the DC controller PCB J113 8 Disconnect the three connectors 1 3 56 F 3 313 9 Remove the eight screws 1 and the main drive unit 2 F 3 314 3 4 5 6 Removing the Rotary Drive Unit 1 Remove the 6 screws 1 and detach the shield mount 2 F 3 315 2 Disconnect the four connectors 1 3 Remove the five screws 1 and the rotary drive unit 2 0007 8636 Chapter 3 F 3 317 A The self tapping screw 1 used for installing the rotary drive unit must be screwed the last F 3 318 3 4 5 7 Removing the Develo
173. s shown in the figure below A test pattern can be made by pressing the test print switch located on the front side of the printer once when the printer enters standby status The multi purpose tray is the only possible pick up source for test print The optional paper feeders cannot be used Feeding Direction Black Yellow Magenta Cyan F 5 1 5 1 3 Adjustment of Electrical Components 5 1 3 1 When Replacing the Laser Scanner Assembly and interface controller PCB 0005 8780 The EEPROM NVRAM of the video controller retains the PWM adjustment values appropriate to individual laser scanner requiring you to update the PWM adjustment values if you have replaced the these unit at this time be sure to execute PWM adjustment in user mode to update the PWM adjustment settings stored in the EEPROM on the interface controller PCB For detailed instructions see Service Mode 5 1 4 Adjustment of Fixing System 5 1 4 1 Checking the nip width of the lower fixing roller 0005 8777 The fixing unit is not designed to allow the adjustment of the pressure nip width however incorrect nip width can cause fixing defects Check the nip width by following the procedures below Ifthe nip width does not satisfy specifications replace the fixing unit 1 Make an all black print of A4 size using the cartridge of this printer by operating external devices and take the print to the customer s site 2 Place the all black print facing down on th
174. sconnect the two contacts 2 Remove the door open detection switch 3 F 3 167 3 2 17 Cooling Fan 3 2 17 1 Removing the Upper Cover Unit 0007 8486 1 Open the upper cover unit 2 Remove the screw 1 and unhook the two claws 2 3 Pull the bottom of the left cover 3 toward you and slide it in the direction of under to remove it 8 2 F 3 168 4 Remove the screw 1 and unhook the two claws 2 5 Pull the bottom of the right cover 3 toward you and slide it in the direction of the arrow to remove it Chapter 3 2 F 3 169 F 3 173 6 Open the face up cover 12 Remove the screw 1 black and detach the upper cover 2 from 7 Unhook the claw 1 and remove the I O cover 2 from the printer the machine MIA F 3 170 8 Unhook the two claws 1 Slide the rear cover 2 downward and remove it a A When attaching the upper cover be sure that you tighten the screw black you removed in step 5 at its correct location When attaching the upper cover be sure that you match the 2 positioning lugs 1 of the upper cover with the 2 notches in the face up auxiliary cover At this time check to make sure that the paper retainer 3 does not block the paper path F 3 171 9 Unhook the claw 1 and remove the link gear 2 10 Remove the link lever 3 from the shaft 4 F 3 172 11 Remove the three screws 1 3 31 Chapter 3
175. slide it in the direction of under to remove it 3 F 3 493 9 Unhook the claw 1 and remove the link gear 2 10 Remove the link lever 3 from the shaft 4 2 F 3 490 4 Remove the screw 1 and unhook the two claws 2 5 Pull the bottom of the right cover 3 toward you and slide it in the direction of the arrow to remove it F 3 494 11 Remove the three screws 1 2 F 3 491 6 Open the face up cover 7 Unhook the claw 1 and remove the I O cover 2 from the printer F 3 495 12 Remove the screw 1 black and detach the upper cover 2 from the machine F 3 492 8 Unhook the two claws 1 Slide the rear cover 2 downward and remove it 3 85 Chapter 3 1 When attaching the upper cover be sure that you tighten the screw black you removed in step 5 at its correct location _L 2 When attaching the upper cover be sure that you match the 2 A e 1 positioning lugs 1 of the upper cover with the 2 notches in the face Ber N up auxiliary cover At this time check to make sure that the paper mS S y retainer 3 does not block the paper path AA e E yO r Ir The enlargement of paper retainer OK NG F 3 497 A Be sure to install the top cover unit with the drive release lever 1 pulled up drive release status and then install the link lever 2 3 5 7 2 Removing the Video Controller PCB 2 When install
176. ss OEE EE 3 68 34 121 Removing the Reht Cover Unit cai sie esis cee ita ited HH es ee ee EDEL EI TREE ageless alla 3 68 3 4 12 2 Removing the Left Cover A 3 4 12 3 Removing the ITB Home Position Detection PCB oocoicicicncncnoninonnnonnnonnnonnnnnnnnocnnnn nono nono EEE E E E E NE 3 68 3 5 PICKUP FEEDING DELIVERY SYSTEM serseri redin ia i E E EER EE EK E ea 3 69 3 5 1 Manual Pickup Roller ainia anal ERE 3 69 3 5 1 1 Removing the Multi purpose Tray Pick up Roller iii dis 3 69 3 5 2 Manual Paper Sens r 222 8 sieates secs RENA 3 69 19 2 l Removing the Upper Cover Ultrasonido sauna hasessiatvesreavspestestyts 3 69 35 22 Removing the Control Panel tunen las AAA A ae Guede 3 71 3 5 2 3 Removing the Video Controller PCB A tee een daca See Sea CON Bees 3 71 315 24 Removing the Front Cover Ut ias 3 71 3 5 25 R moving the Main AAA NN 3 71 3 5 2 6 Removing the Multi purpose Tray Paper Sensor oa a a E A E E E E E G A 3 73 3 5 3 Multi purpose Pickup Solenoid nnair n ia EEE ASEE EE E A R 3 73 3 33 l Removing the Upper Cover Unit A E AANE A T Oa 3 73 352 Removing the Control Panelas oea een A E EA RE E RE REEE E E een 3 75 30 33 Removing th Video Controller POB rren iar e aE Ru AA EE A a a R E 3 75 3 534 Removing the Front Cover Ut iba 3 75 3 5 3 5 Removing the Main Drive Unit 3 5 3 6 Removing the Multi purpose Tray Pick up Solenoid c cee cesessesescsceeceeseseeecscsesececscsceecsesesanscseseeca
177. ssure Rollerne 18 220 ea Shen tada 3 94 TO DELIVERY SONS ad 3 94 3 6 3 1 Removing the Face up Cover cccccccceeseeeeeeeeeeeeeaeeetenaeeeeaeeeeaaaeescaaeeeseaeeeeseaeeeeqaaeeseaaeeseaaeeeeeaeeeseaeesseaaeeeseneeesseeesteneeeeseaaes 3 94 3 6 3 2 Removing the Fixing Delivery Paper Sensor cccccceceeceeeecceeeeceneeeeeceeeeceaeeeeceaeeesceaaeeecaeeessaeeeseaeeeseaeeeseaeesseeeeseceeeseaes 3 95 3 6 4 FIXING MOTO A a heave eats 36 41 Removing the Upper Cover Unit ini ee ea ede sea Gd She ele a aa ee a ee 3 6 4 2 Removing the Interface Controller PCB u det Ah nf 3 6 4 3 Removing theA Fixing Motor cccccccsssssssssssessssssssscsssssesesasesassssssssavesssesasasssisssuavasasasasasasssssussssesasesseasstisesiaseacacseseeesceaeee Chapter 4 MAINTENANCE AND INSPECTION 4 1 Periodically Replaced Parts scccccccetecncceesecccneeeeseddaneeedsecaneceenseceneceedeecaaeeeessadeaeenededsaneeeeseeceaeneedecdeeeneesees 4 1 1 Periodic Replacement Parts 2 ia 4 2 GONSUMADICS vis 2 itec ei erstees 8 Gn eet ts ici ted 4 2 1 Expected Service Life of Consumable Parts 4 3 Periodical Service ein uiid in e e dd bea medio 431 Periodi Servicen A A ds AA CICAMING tota ia db dada I E eolica titanio 4 4 1 PICK UP rollo A cion 442 Separation Pad nic pesados seep beceysaeesbccbesayhohan lige iaa ep ia eana anaE eE piai E 443 Registrationwollens s 2222er td 444 Registrator Shutter iiin en n ass eine aaea ra o aaa a
178. stalling the drum cartridge in the printer with the top cover unit removed be sure to do so after pulling up the drive release lever 2 Remove the four screws 1 and disconnect the three connectors 2 1 securely drive release status When the lever is pulled down then detach the interface connector PCB 3 from the machine drive status the coupling 2 is pushed out Therefore the shaft of the drum cartridge may hit the coupling and may damage the coupling AAA oS se F 3 191 A If you have replaced the video controller PCB be sure to go through the following 1 Execute PWM adjustment in service mode 2 Remove the existing EEPROM IC6 and mount it to the new PCB 3 2 18 3 Removing the Internal Temperature Detection Thermistor F 3 188 0005 8850 1 Remove the 6 screws 1 and detach the shield mount 2 3 34 Chapter 3 F 3 192 2 Remove the screw 1 Disconnect the connector 2 and remove the internal temparature detection thermistor 3 3 35 Chapter 3 3 3 LASER EXPOSURE SYSTEM 3 3 1 Laser Scanner Unit 3 3 1 1 Removing the Upper Cover Unit 0007 8491 1 Open the upper cover unit 2 Remove the screw 1 and unhook the two claws 2 3 Pull the bottom of the left cover 3 toward you and slide it in the direction of under to remove it 3 F 3 197 9 Unhook the claw 1 and remove the link gear 2 10 Remove the link lever 3 from the shaft
179. sure plate 3 upward and release the 2 bosses 2 12 Remove the left pressure plate 3 from the fixing unit ie vun F 3 529 13 Remove the 1 screw 1 and unplug the 1 connector 2 2 F 3 530 14 Unhook the 2 claws 1 and unplug the 1 connector 2 F 3 531 15 Remove the 1 screw 1 and slide the fixing separation guide 2 out to the left 3 92 F 3 532 A Make sure that all cables on the fixing film unit are hooked into the fixing separation guide when reassembling the guide Especially the right side cables are easy to be pinched unless properly hooked into the guide ma 2 f ok ates 16 Lift the fixing film unit 1 up straight in horizontal position to take it out of the fixing unit F 3 533 F 3 534 3 6 2 Fixing Pressure Roller 3 6 2 1 Removing the Face up Cover 0008 3513 1 Unhook the two claws 1 and remove the two levers 2 from the fixing unit Chapter 3 2 2 Unhook the two claws 1 1 F 3 536 3 Unhook the two claws 1 and remove the face up cover 2 from the fixing unit 1 2 1 rr mr Le Jdid ia adi Pr rr EEEE Emme F 3 537 3 6 2 2 Removing the Fixing Film Unit 0007 9861 1 Unhook the 1 claw 1 and remove theA delivery roller gear 2 2 Unhook the 1 claw 3 and remove theA pressure roller gear 4 3 Remove the idle gear 5 F 3 538 4 Pressing the boss 1 inward rotate the del
180. t temperature control This control is to maintain the fixing heater at the target temperature during printing The CPU raises the target temperature in stages in one printing process to prevent the temperature fall of the fixing sleeve as the paper goes through The target temperature varies in stages depending on the number of print if continuous printing and it differs depending on the color of print monochrome or colors and the media type 3 Between sheets temperature control This control is to make the temperature of the fixing heater lower than the target temperature during continuous printing to prevent the temperature rise of the fixing sleeve between sheets The between sheets temperature varies depending on the distance between two sheets and media type 4 Throughput control This control is to prevent the overheating at both ends of fixing sleeve unit during continuous printing of a narrow paper For a continuous printing this CPU decreases the throughput by extending the paper pick up intervals if the sub thermistor reads over 270 deg C and the paper width is narrower than 210mm or the sub thermister reads over 280 deg C independent of the paper width 2 6 3 Protective Functions 2 6 3 1 Flicker prevention function 0007 9336 This function is utilized to prevent flicker caused by attaching lighting apparatuses to the ACA power source to which the printer is connected The heater drive circuit uses a triac to switch AC power If the
181. t the 18T gear may not engage with the drive release lever if the gear is not placed properly F 3 478 4 Free the 2 claws 1 and detach the inside cover 2 F 3 482 7 Disconnect the connector 1 and remove the E ring 2 Remove the F 3 479 registration clutch 3 5 Free the claw 1 and detach the lower front cover 2 3 83 Chapter 3 us o F 3 483 F 3 486 3 5 6 7 Removing the Registration Roller Unit 0005 8792 A The connector on the registration clutch side cannot be 1 Unhook the claw 1 and remove the registration drive gear 2 disconnected When removing the registration clutch be sure to disconnect the connector on the DC controller PCB J113 8 Disconnect the three connectors 1 F 3 484 9 Remove the eight screws 1 and the main drive unit 2 F 3 488 3 Remove the two screws 1 and the registration roller unit 2 F 3 485 3 5 6 6 Removing the Registration Shutter Unit 0007 9005 1 Open the top cover unit 2 Remove the two screws 1 and the registration shutter unit 2 F 3 489 A When replacing the registration roller unit be careful not to bend the sheet 3 84 Chapter 3 3 5 7 Registration Clutch 3 5 7 1 Removing the Upper Cover Unit 0007 9008 1 Open the upper cover unit 2 Remove the screw 1 and unhook the two claws 2 3 Pull the bottom of the left cover 3 toward you and
182. t up or if the BDI signal cannot be detected for 0 5 second after the detected period of the signal has satisfied a specified range the DC controller determines a optical unit failure 2 BD error If the input period of the BDI signal is not within the range of 1 7 of the scanner motors specified revs during a print operation after the motor has reached its specified revs the DC controller determines a BD error 2 7 Chapter 2 2 4 IMAGE FORMATION SYSTEM 2 4 1 Overview Configuration 2 4 1 1 Outline 0005 8884 The image formation system which serves as the nerve center of the printer forms a toner image on paper It consists of a developing cylinder four toner cartridges containing toner a drum cartridge containing the ITB photosensitive drum etc a developing rotary storing the toner cartridges and a fixing unit etc These parts are controlled by the DC controller After receiving a print command from the video controller the DC controller controls the developing rotary laser scanner unit high voltage power supply circuit to form an image based on the VIDEO signals on paper The toner cartridges and drum cartridge come with built in memory tags that store cartridge usage condition information etc The DC controller performs reading and writing Toner cartridge Primary charging roller ITB sar a a Memory tag Q vDo EF Developing 7 cylinder O Memory tag O IA 7 Blade J nois _ Primary transfer YO Y
183. tandard voltage 4 Then when the laser driver IC goes into LD force off mode the LD1 is turned off forcefully The laser driver circuit stores the adjusted laser light amount in the C16 5 After the light amount adjustment of the LD1 the laser driver IC goes into LD2 force on mode and the laser driver circuit emits light from the LD2 forcefully The laser light amount of the LD2 is adjusted in the same way the LD1 is done The laser driver circuit stores the adjusted laser light amount of the LD2 in the C18 A Note 1 The APC performed at scanner motor start up It adjusts the laser light amount and detects a laser failure Note 2 The APC performed during the print period It performs the laser light amount adjustment for one line before the first line starts to be written 2 3 2 4 Horizontal synchronous control 0005 8860 This control is utilized to determine a starting position in the image horizontal direction The control procedures are described below 1 The DC controller outputs the LASER CONTROL signals in a combination of which the laser drive IC goes into LD1 force on mode or LD2 force on mode during the unblanking period Note and emits light from the laser diodes LD1 LD2 forcefully 2 Each laser beam is sent to the BD PCB located on the scanning path of laser beams 3 The BD circuit detects these laser beams and generates the BD INPUT BDI signal The signal is sent to the DC controller 4 The DC controller ge
184. ter pulling up the drive release lever 1 securely drive release status When the lever is pulled down drive status the coupling 2 is pushed out Therefore the shaft of 1 Remove the seven screws 1 and detach the shield cover the drum cartridge may hit the coupling and may damage the coupling 0007 8996 3 79 Chapter 3 F 3 461 3 5 6 Registration Roller Unit 2 Remove the four screws 1 and disconnect the three connectors 2 then detach the interface connector PCB 3 from the machine 3 5 6 1 Removing the Upper Cover Unit F 3 458 0007 8998 1 Open the upper cover unit 2 Remove the screw 1 and unhook the two claws 2 3 Pull the bottom of the left cover 3 toward you and slide it in the direction of under to remove it AY 3 F 3 459 A If you have replaced the video controller PCB be sure to go through the 2 following 1 Execute PWM adjustment in service mode F 3 462 2 Remove the existing EEPROM IC6 and mount it to the new PCB 4 Remove the screw 1 and unhook the two claws 2 5 Pull the bottom of the right cover 3 toward you and slide it in the direction of the arrow to remove it 3 5 5 4 Removing the Registration Detection PCB 0007 6077 1 Disconnect the connector 1 from the DC Controller PCB 2 F 3 463 a 6 Open the face up cover F 3 460 7 Unhook the claw 1 and remove the 1 O cover 2 from the printer 2 Remove the screw 1 and
185. th the 2 notches in the face up auxiliary cover At this time check to make sure that the paper retainer 3 does not block the paper path F 3 262 9 Unhook the claw 1 and remove the link gear 2 10 Remove the link lever 3 from the shaft 4 The enlargement of paper retainer NG F 3 263 11 Remove the three screws 1 F 3 266 A 1 Be sure to install the top cover unit with the drive release lever 1 pulled up drive release status and then install the link lever 2 2 When installing the drum cartridge in the printer with the top cover unit removed be sure to do so after pulling up the drive release lever 1 securely drive release status When the lever is pulled down drive status the coupling 2 is pushed out Therefore the shaft of the drum cartridge may hit the coupling and may damage the coupling F 3 264 12 Remove the screw 1 black and detach the upper cover 2 from the machine F 3 265 3 48 Chapter 3 I e cs ae A The self tapping screw 1 used for installing the rotary drive unit must be screwed the last 3 4 3 2 Removing the Rotary Drive Unit 0007 8530 1 Remove the 6 screws 1 and detach the shield mount 2 F 3 272 3 4 3 3 Removing the Developing Rotary Motor 0005 8995 2 1 Remove the two screws 1 and the developing rotary motor 2 from the rotary drive unit F 3 269 2 Disconnect the four connect
186. that the voltage level of a given signal is High while 0 is used to indicate Low The voltage value however differs from circuit to circuit In addition the asterisk as in DRMD indicates that the DRMD signal goes on when 0 In practically all cases the internal mechanisms of a microprocessor cannot be checked in the field Therefore the operations of the microprocessors used in the machines are not discussed they are explained in terms of from sensors to the input of the DC controller PCB and from the output of the DC controller PCB to the loads The descriptions in this Service Manual are subject to change without notice for product improvement or other purposes and major changes will be communicated in the form of Service Information bulletins All service persons are expected to have a good understanding of the contents of this Service Manual and all relevant Service Information bulletins and be able to identify and isolate faults in the machine Contents Contents Chapter 1 PRODUCT DESCRIPTION Lil Features wacker te ai Re enna ena ied neti 1 1 1 Tg eT F ature so iss oid nein eee ea ar i ed a ed ede eee oe 1 1 1 1 2 Difference iN Specifications iii pala 1 1 R SYSTEM ConStr ction Ei A aces Hits A A id aa catia Geeta 1 2 F231 System COnMOUration bici A A cava ded cy ia 1 2 1 3 Product SpecificatiOnS sisien liar ccecheladalectt dad tableta ill dll aE 1 3 1 3 1 Product Specifications u nn en Henn
187. the engaging motor clockwise for a specified period to switch the mode to initial mode in order to prepare for the next operation When the output is L the DC controller cannot determine whether the printer is in initial mode 2 in the table above or memory tag communication mode 3 in the table above In such a case the DC controller rotates the engaging motor counterclockwise for a specified period to switch the mode to print mode Then it rotates the motor clockwise for a specified period to switch the mode to initial mode The DC controller detects mode the printer is actually in from the detection results ofthe PS712 and prepare for the next operation The DC controller determines a developing rotary engaging mechanism abnormality stops the pirnter engine and notifies it to the video controller under the following conditions in engaging failure detection 1 The PS712 does not output L even if the engaging motor rotates counter clockwise for a specified period 0 2 seconds at developing rotary disengaging 2 The PS712 does not output H even ifthe engaging motor rotates clockwise for a specified period 0 2 seconds at developing rotary engaging 2 4 5 Toner Cartridge 2 4 5 1 Outline 0005 8724 The toner cartridge has a function of forming a visible image on the drum with toner There are four toner cartridges in Y M C and Bk which are the same in structure The following indicates the configuration of the cartridges and
188. the main thermistor continuously detects below 100 deg C for minimum 1 second during the print temperature control and between sheets temperature control the CPU judges it abnormal Abnormal low temperature on the sub thermistor If the sub thermistor continuously reads below 75 deg C for minimum 2 seconds after 20 seconds from when the heater is energized the CPU judges it abnormal Break during start up in the sub thermistor If the sub thermistor continuously reads below 40 deg C for minimum 1 second after the heater is energized the CPU judges that the sub thermistor has a break Break in the main thermistor If the main thermistor continuously reads below 40 deg C for minimum 0 5 second after the start up temperature control the CPU judges that the main thermistor has a break Break in the sub thermistor If the sub thermistor continuously reads below 40 deg C for minimum 0 5 second after the start up temperature control the CPU judges that the sub thermistor has a break 3 Start up abnormality Start up abnormality 1 If the main thermistor continuously reads below 120 deg C for minimum second after 20 seconds from when the heater is energized the CPU judges it abnormal Start up abnormality 2 If the main thermistor reading never exceeds 5 deg C below the target temperature of temperature control within 75 seconds from when the heater is energized the CPU judges it abnormal 2 41 Chapter 2 2 7 EXTERNAL AND
189. the two claws 1 Slide the rear cover 2 downward and remove it 3 95 Chapter 3 1 When attaching the upper cover be sure that you tighten the screw black you removed in step 5 at its correct location 2 When attaching the upper cover be sure that you match the 2 positioning lugs 1 of the upper cover with the 2 notches in the face up auxiliary cover At this time check to make sure that the paper retainer 3 does not block the paper path F 3 557 9 Unhook the claw 1 and remove the link gear 2 10 Remove the link lever 3 from the shaft 4 The enlargement of paper retainer NG F 3 558 11 Remove the three screws 1 F 3 561 A 1 Be sure to install the top cover unit with the drive release lever 1 pulled up drive release status and then install the link lever 2 2 When installing the drum cartridge in the printer with the top cover unit removed be sure to do so after pulling up the drive release lever 1 securely drive release status When the lever is pulled down drive status the coupling 2 is pushed out Therefore the shaft of the drum cartridge may hit the coupling and may damage the coupling F 3 559 12 Remove the screw 1 black and detach the upper cover 2 from the machine F 3 560 3 96 Chapter 3 err ES Sn N A SAS E US N 1 Sa 1 x 1 1 1 1 1 1 Y Y er W A it E 3 6
190. transfer roller ALO Feed bell 2 2 na Se eh a A ee ee a ao eae 4 4 7 External Covers 4 5 User Maintenance AS ROHET Cart Gen ashe A a ee ee costa A aie 4 5 2 Drum Cartridge O RN 4 5 4 Pressure Roller fixing assembly ccecceeccessesceseeseeseeseceececescensessesessessecseeseeseeseeseceeceecseceaecnecaecaaeasesseseeeaeeaeeaeeseeaceseeseeeeeeteteese 4 5 5 Density sensor ITB home position sensor c ce eeseeseeseseesceseseescsseseeecsececsseseuecsecscsecsececsecaesecnecsesaeneeecsaeasecsecaseecuesesaceaeessenaeateas Chapter 4 4 1 Periodically Replaced Parts 4 1 1 Periodic Replacement Parts 0005 8786 No parts require periodic replacement in this printer 4 1 Chapter 4 4 2 Consumables 4 2 1 Expected Service Life of Consumable Parts 0005 8788 Some parts of the machine are likely to require replacement once or more because of wear or damage Replace them when they are found to be faulty by referring to the following table 4 2 T 4 1 No Parts name Parts No Q ty Estimated life Remarks 1 Fixing assembly 100V RG5 7413 000 1 50 000 prints LBP 2410 2 Fixing assembly 120V RG5 7423 000 1 50 000 prints 3 Fixing assembly 220V RG5 7424 000 1 50 000 prints 4 Fixing assembly 100V RG5 7440 000 1 50 000 prints LBP5200 5 Fixing assembly 120V RG5 7441 000 1 50 000 prints 6 Fixing assembly 220V RG5 7442 000 1 50 000 prints Chapter 4 4
191. troller 2 4 3 2 Image density calibration D max control 0005 8787 This control is performed to stabilize the image density of the printer engine The DC controller forms density patterns in each color on the ITB as varying the developing bias when specified conditions are met Then the DC controller measures the density of the patterns with the density sensor and controls the developing bias to obtain a proper density based on the measured density 2 4 3 3 Image halftone calibration D half control 0005 8791 This control is utilized to measure a halftone density output from the video controller in order for the interface controller to perform halftone calibration and to return the measurement results to the interface controller The DC controller forms image detection patterns for each color on the ITB with a proper developing bias specified in the D max control based on image data sent from the interface controller Then the DC controller measures the patterns with the density sensor and returns image data to the video controller The interface controller performs the halftone calibration to obtain an ideal halftone image based on data 2 4 4 Developing Rotary 2 4 4 1 Outline 0005 8704 The developing rotary has a function of moving a toner cartridge to a specified position There are four toner cartridges Y M C Bk stored in the rotary The rotary is illustrated in the figure below 2 18 Chapter 2 DC controller
192. ty calibration D max control and image halftone calibration D half control are executed as necessary Specified conditions to perform image stabilization calibration control are listed in the following Power is turned on Cartridge is replaced After printing 800 images or more mono color 800 pages full color 200 pages After 12 hours in the absence of a print command In response to a command for execution from the video controller A Image density detection function This printer has functions of striking light to image density patterns in each color formed on the ITB and measuring the density of the patterns from the amount of reflected light The DC controller emits light from the density sensor and strikes the light to each detection pattern Then the reflected light off the patterns is received at a light receiver and returned to the DC controller as the IMAGE DENSITY signals The DC controller converts the input IMAGE DENSITY signals analog values to density values digital values and stores them Chapter 2 Detection pattern F 2 24 If the DC controller cannot receive any light at the light receiver during image density detection and notifies a density sensor abnormality warning to the video controller If values detected with the density sensor is out of a specified range the DC controller initializes the image density and notifies an image density out of guaranteed range warning to the video con
193. ure that the paper retainer 3 does not block the paper path F 3 31 9 Unhook the claw 1 and remove the link gear 2 10 Remove the link lever 3 from the shaft 4 F 3 32 11 Remove the three screws 1 3 8 Chapter 3 3 2 8 2 Removing the Control Panel 0007 8195 1 Free the claw 1 and disconnect the connector 2 then detach the control panel for the machine F 3 35 A Be sure to install the top cover unit with the drive release lever 1 e pulled up drive release status and then install the link lever 2 2 When installing the drum cartridge in the printer with the top cover F 3 38 unit removed be sure to do so after pulling up the drive release lever 1 securely drive release status When the lever is pulled down 3 2 8 3 Removing the Video Controller PCB drive status the coupling 2 is pushed out Therefore the shaft of the drum cartridge may hit the coupling and may damage the coupling 0007 8196 1 Remove the seven screws 1 and detach the shield cover MA a a 74 yO Y 7 M y WM Y 1 ne F 3 39 2 Remove the four screws 1 and disconnect the three connectors 2 then detach the interface connector PCB 3 from the machine Chapter 3 3 F 3 40 If you have replaced the video controller PCB be sure to go through the following 1 Execute PWM adjustment in service mode 2 Remove the existing EEP
194. urface The sensor strikes light to the rotating disk and sends the monitoring results of the reflected light to the detection unit The detection unit monitors the results constantly It generates the two ENCODER DETECTION ENCSNS1 ENCSNS2 signals based on the tim ing of detecting the reflective and interrupting areas on the disk and sends the signals to the DC controller 2 47 Chapter 2 areas areas Reflective sensor Sensor output Detection unit ENCSNS2 ENCSNS1 2 8 2 6 Cooling fan NY Reflecting Interrupting ROTHPS JL Start of ENCODER DETECTION signal monitoring ofl JL ENCSNS1 l Normal speed i u ENCSNS2 ENCSNS1 Slow i l Loi ENCSNS2 Fast ENCSNS2 _ l F 2 51 0005 8726 The Cooling fan a DC brushless motor with a built in Hall device cools off around the fixing unit power supply unit high voltage power supply PCB and cartridge The CPU IC101 controls the cooling fan The CPU outputs the FAN DRIVE FAN1D signal after receiving a print command from the interface controller and rotates the cooling fan After the completion of a print operation the CPU rotates the fan for a specified period based on internal temperature by monitoring the internal temperature detection thermistor TH3 Then it stops the fan Refer to the table below The CPU monitors the FAN LOCK DETECTION FANIS signal while the cooling fan is rotating If the sign
195. value 2 30 Chapter 2 Light guide Waste toner detection circuit Light receiver WASTONS WASTETONER FULL DETECTIONsignal LED DRIVE signal P3 3V DC controller Waste toner A transport plate Light emitter Stirrer Light receiver lt Low waste toner level gt lt High waste toner level gt F 2 38 2 4 7 Secondary Transfer Mechanism 2 4 7 1 Outline 0005 8773 The transfer unit has a function of secondarily transferring the toner transferred primarily on the ITB onto paper The unit is structured with the secondary transfer roller and engaging lever which are operated by the main motor drive The secondary transfer roller rotates by the motor drive The engaging lever performs an engaging operation between the secondary transfer roller and ITB in roller engaging control 2 31 Chapter 2 DC controller of 3 zo o FS zo a Os Zu w 5 o gt 2 Sn Zo u we un co cr uu uo oe 38 Zu 25 on 2d g o Roller cam Engaging lever 4 Q A NZ Secondary transfer rollers 2 4 7 2 Secondary transfer roller engaging control 0005 8775 This control is utilized to perform an engaging disengaging operation between the secondary transfer roller and ITB in order to transfer the toner on the ITB to paper The operations of this control are described in the following 1 At printing the DC controller checks that the secondary transfer roller is at its hom
196. ved be sure to do so after pulling up the drive release lever 1 securely drive release status When the lever is pulled down 3 2 11 DC Controller PCB drive status the coupling 2 is pushed out Therefore the shaft of the aram cartridge may hit the coupling and may damage the 3 2 11 1 Removing the Upper Cover Unit coupling 0007 8203 1 Open the upper cover unit 2 Remove the screw 1 and unhook the two claws 2 3 Pull the bottom of the left cover 3 toward you and slide it in the direction of under to remove it AAA lin F 3 88 4 Remove the screw 1 and unhook the two claws 2 5 Pull the bottom of the right cover 3 toward you and slide it in the direction of the arrow to remove it Chapter 3 2 F 3 89 F 3 93 6 Open the face up cover 12 Remove the screw 1 black and detach the upper cover 2 from 7 Unhook the claw 1 and remove the I O cover 2 from the printer the machine MIA F 3 90 8 Unhook the two claws 1 Slide the rear cover 2 downward and remove it a A When attaching the upper cover be sure that you tighten the screw black you removed in step 5 at its correct location When attaching the upper cover be sure that you match the 2 positioning lugs 1 of the upper cover with the 2 notches in the face up auxiliary cover At this time check to make sure that the paper retainer 3 does not block the paper path F 3 91 9
197. w 1 black and detach the upper cover 2 from the machine 1 1 F 3 423 i 1 TPS Soe SW A N 1 When attaching the upper cover be sure that you tighten the screw N black you removed in step 5 at its correct location 2 When attaching the upper cover be sure that you match the 2 positioning lugs 1 of the upper cover with the 2 notches in the face up auxiliary cover At this time check to make sure that the paper retainer 3 does not block the paper path e y M Y E F 3 425 3 74 Chapter 3 3 5 3 2 Removing the Control Panel 0007 8983 1 Free the claw 1 and disconnect the connector 2 then detach the control panel for the machine 1 F 3 427 3 5 3 3 Removing the Video Controller PCB 0007 8984 1 Remove the seven screws 1 and detach the shield cover F 3 428 2 Remove the four screws 1 and disconnect the three connectors 2 then detach the interface connector PCB 3 from the machine 3 If you have replaced the video controller PCB be sure to go through the following 1 Execute PWM adjustment in service mode 2 Remove the existing EEPROM IC6 and mount it to the new PCB 3 5 3 4 Removing the Front Cover Unit 0007 8985 1 Unhook the two claws 2 holding the multi purpose tray 1 2 Slide the front cover unit 3 to the left Pull out the front cover unit to the right and remove it off the printer ee
198. w 1 used for installing the rotary drive unit must be screwed the last TA 3 4 7 2 Removing the Rotary Drive Unit F 3 346 0007 8533 1 Remove the 6 screws 1 and detach the shield mount 2 3 4 7 3 Removing the Toner Cartridge Motor 0005 8996 1 Remove the screw 1 and remove the toner cartridge motor 2 1 F 3 343 2 2 Disconnect the four connectors 1 F 3 347 3 4 8 Waste Toner Detection PCB 3 4 8 1 Removing the Upper Cover Unit 0007 8616 1 Open the upper cover unit 2 Remove the screw 1 and unhook the two claws 2 3 Pull the bottom of the left cover 3 toward you and slide it in the direction of under to remove it 2 F 3 348 4 Remove the screw 1 and unhook the two claws 2 5 Pull the bottom of the right cover 3 toward you and slide it in the direction of the arrow to remove it F 3 345 3 61 Chapter 3 2 F 3 349 F 3 353 6 Open the face up cover 12 Remove the screw 1 black and detach the upper cover 2 from 7 Unhook the claw 1 and remove the I O cover 2 from the printer the machine F 3 350 8 Unhook the two claws 1 Slide the rear cover 2 downward and remove it A 1 When attaching the upper cover be sure that you tighten the screw black you removed in step 5 at its correct location 2 When attaching the upper cover be sure that you match the 2 positioning lugs 1 of the upper cover with t
199. ws 1 and disconnect the three connectors 2 then detach the interface connector PCB 3 from the machine 3 wee BIN US ao Se 1 Sn 1 x 1 1 1 F 3 474 a ry A l h N lil N Z A DPP po aera If you have replaced the video controller PCB be sure to go through the 8 g ss Lube following F 3 471 1 Execute PWM adjustment in service mode 2 Remove the existing EEPROM IC6 and mount it to the new PCB 3 5 6 2 Removing the Control Panel 0007 8999 1 Free the claw 1 and disconnect the connector 2 then detach the control panel for the machine 3 5 6 4 Removing the Front Cover Unit 0007 9003 1 Unhook the two claws 2 holding the multi purpose tray 1 2 Slide the front cover unit 3 to the left Pull out the front cover unit to the right and remove it off the printer F 3 472 3 5 6 3 Removing the Video Controller PCB 0007 9001 1 Remove the seven screws 1 and detach the shield cover F 3 475 3 5 6 5 Removing the Main Drive Unit 0007 9004 1 Remove the 2 screws 1 and detach the control panel mount 2 3 82 Chapter 3 F 3 476 F 3 480 2 Remove the 6 screws 1 and detach the shield mount 2 6 Remove the 2 screws 1 and detach the front auxiliary cover 2 F 3 481 A When installing the main drive unit be sure to pull up the drive release lever 1 drive release status before installing the 18T gear 2 as shown in the figure right side Note tha
200. y paper sensor 3 F 3 416 3 5 3 Multi purpose Pickup Solenoid 3 5 3 1 Removing the Upper Cover Unit 0007 8982 1 Open the upper cover unit 2 Remove the screw 1 and unhook the two claws 2 3 Pull the bottom of the left cover 3 toward you and slide it in the direction of under to remove it F 3 417 4 Remove the screw 1 and unhook the two claws 2 5 Pull the bottom of the right cover 3 toward you and slide it in the direction of the arrow to remove it F 3 418 6 Open the face up cover 7 Unhook the claw 1 and remove the I O cover 2 from the printer 8 Unhook the two claws 1 Slide the rear cover 2 downward and remove it 3 73 Chapter 3 9 Unhook the claw 1 and remove the link gear 2 10 Remove the link lever 3 from the shaft 4 F 3 421 The enlargement of paper retainer Ok yr 11 Remove the three screws 1 F 3 424 F 3 422 A 1 Be sure to install the top cover unit with the drive release lever 1 pulled up drive release status and then install the link lever 2 2 When installing the drum cartridge in the printer with the top cover unit removed be sure to do so after pulling up the drive release lever 1 securely drive release status When the lever is pulled down drive status the coupling 2 is pushed out Therefore the shaft of the drum cartridge may hit the coupling and may damage the coupling 12 Remove the scre

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