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ep5000/ep4000 general, mechanical/ electrical - Wiki Karat

1. S64 1149M017AA PC73 ed D Details of Paper Size Detecting S witches S ensors Operation and Detectable Pa per Sizes Paper Size Detecting Switches Sen Paper Size Name Inch Size go iu Length FD Width CD S61 S62 S63 S64 PC72 PC73 ASL Invoice L 5 12 8 12 d48 210 0 of B5L 0 182 257 0 0 B5C 257 182 0 A4L 210 297 0 O AAC 297 210 B4L D 257 364 O O 0 A3L 297 420 0 0 0 Quarto C 10 8 254 203 G Letter L 8 10 1 2 203 267 G Letter C 10 12 8 267 203 0 0 Folio 8 1 4 13 210 330 Letter L 812 11 216 279 0 0 Letter C 11 8 1 2 279 216 0 0 Legal 8 12 14 216 356 O D 0 0 0 1 14 11 14 279 356 0 O 0 0 Ledger 11 17 279 432 0 O 0 Comp Form 11 315 279 381 Korean FLS L 192 268 FLS 8 13 203 330 0 0 Hongkong FLS L 8 12 13 216 330 G Legal L 8 12 13 216 330 0 0 0 Folio Eu 8 1 4 14 210 356 I 0 0 0 Switch operation f Actuated g Deactuated Sensor operation f Blocked g Unblocked A Tech Rep Choice function must be set for the size in the crosswise direction L Lengthwise C Crosswise Metric Areas A5L Inch Areas Invoice L M 69 Control Signal Actuated Deactuated WIRING DIAGRAM PWB A P 26A 2 H 25 J PWB A P 26A 4 25 l PWB A P 26A 7 25 P
2. 41 49 t f f f fe e e fe fe Je fe e fe fe de fe de fe fe f t for 50 56 t t t t t t t t t fe t t t t t fe de de fe f tf f 57 64 t f ee de fe fe de fe t t fe t f de fe de r fe for 65 72 t t t t t t t t t de Je t t t f ee f tf f 73 80 t t f f t f f t lt lt f f f f f f f f f 81 88 t t f t t f f f f f lt f f f f f fo f 89 98 t lr t f f f f f f t f f f f f t f 99 208 t t t t t t t t t f f f f f t r 209 217 t t t t t f f f f f f f f to lt 218 225 t t f t f f f f f f f f t f 226 234 t t f t f f f f f f f t f 235 243 t lt t t f f ele f f t f 244 249 t t t t t t t t t tf jf 250 258 t t t t f t f f f if 259 265 t f f f f f f tf f 266 272 t t t t f t n 273 281 t t f t f t r 282 291 t t f f tf f 292 298 f f f t f 299 ft f tf f f LED that turns ON M 22 BASE Signal SCEND Image Erase Lamp LA3 LT H Approx 75msec i 1 Approx 265msec rm o0 OE ON EP5000 65msec EP5000 255msec OFF All LEDs ON ON OFF Control All LEDs ON 1151T20MCB Control Signal ON OFF WIRING DIAGRAM LA3 PWB A PJ9A 1 6 Static ON OFF Control 4 L M 23 1156SBM1100A BRM OPTICAL SECTION As the Scanner is moved by Scanner Motor M2 the light from Exposure Lamp LA1 is r
3. M 74 2 Paper Take Up Retry Control D To minimize the occurrence of a paper misfeed due to a slippery Paper Take Up Roll the Paper Take U p Motor M11 12 is kept deenergized for a given period of time before itis energized again ifa sheetof paper fails to reach the P aper Take U p Sensor PC55 56 even after the lapse of a given period of time after the motor has first been energized paper take up retry control DA misfeed results if the sheet of paper does not reach the Paper Take Up Sensor even after three paper take up sequences 3 Paper Take Up Interval Control D The PaperF eed Rolland Separator Roll may sometimes fail to separate the subse quent sheet of paper properly and the leading edge of that paper may be beyond the Feed and Separator Rolls inside the copier Ifthe next paper take up sequence is started in this condition the distance between the preceding and the current sheet of paper will become shorter than normal resulting in a misfeed D To maintain a given paper take up interval therefore this copier provides the fol lowing control Ifittakes the paperless than a specified time to block L PC 55 56 after M11 12 has been energized M11 12 is temporarily deenergized and an ap propriate period of time thereafter itis energized again paper take up interval con trol 4 Double Feed Paper Take Up Control D Even ifthe PaperTake Up Rolltakes up two sheets of paperatone time the dou
4. 4 1st 2nd Drawer Set Sensor PC61 62 Front 4425M003AA Control Signal Blocked Unblocked WIRING DIAGRAM PWB A PJ 22A 2 L H 25 P PWB A PJ 22A 6 I H 25 P M 59 1156SBM1802A 18 2 Drawer Paper Lifting Lowering Mechanism Control 1 Metric Areas D The paper lifting mechanism raises the paper in the drawer so that the top of the paper stack is pressed against the Paper Take Up Roll at a constant pressure D When slid into the copier the drawer presses the Drawer SetLever which engages Lift Up Motor Gear 1 with Paper Lifting Arm Gear 2 DAtthe same time the Drawer S etSensor P C61 P C62 is blocked goes LOW and after 1 msec the Lift Up Motor M 13 M 14 starts turning causing the Paper Lifting Arm to raise the Paper Lifting Plate D When the drawer is slid out Lift Up Motor Gear 1 is disengaged from Paper Lifting Arm Gear 2 lowering the Paper Lifting P late Rear Paper Lifting Arm Lift Up Motor M13 14 CS Front 4425M004AA When Drawer is Slid in 1st 2nd Drawer Lift Up D The Paper Lifting Arm further raises the paper Sensor P C 65 66 after the top sheet of paper is pressed against the Paper Take Up Roll As the light blocking plate blocks the Lift Up Sensor goes LOW the Lift Up Motor M13 M 14 stops 4425M005AA M 60 During Copying D As sheets of paper are used the Paper Take Up Roll lo
5. UN2 does not use the data provided by LED1 of Original Size Detecting Sensor FD1 PC116 and LED2 of CD2 PC119 for the determination of the original size Any non standard size is rounded off to the nearest standard size M 35 1156SBM1205A 12 5 Original Size Detection Timing Master CPU on PWB A affirms and resets the readings of the original size atthe fol lowing timings D Takes size readings When the Original Cover is raised to an angle of 15 or more PC111 is deactivated D Affirms size readings When the Original Cover is lowered to an angle of 15 or less PC111 is justactivated or when the Startkey is pressed with PC111 in the deacti vated state DResets size readings When the Original Cover is raised S108 is deactuated Original Cover Detecting Sensor PC111 Size Reset Switch S108 1139M093AA Control Signal Blocked Unblocked WIRING DIAGRAM PC111 PWB APJ17A 11 L H 21 G Control Signal ON OFF WIRING DIAGRAM S108 PWB A PJ 12A 1 L H 16 B M 36 1156SBM1300A D This copier employs the New Micro Toning developing system The toner fed up DEVELOPING UNIT to the Sleeve Magnet Roller is conveyed onto the points of development as the Sleeve Magnet Roller turns thereby forming a visible developed toner image of the original Toner Bottle Developer Scattering Prevention Mylar Developer Scattering Prevention Plate Doctor Blade Sub Hopp
6. Approx 210msec gt CL2 The Trailing edge of the paper moves past Paper Exit Switch 53 ON Es m The components are deenergized in order of 2 on the preceding page M 7 1149SBM0500A Ell WATCHDOG CPU OVERRUN MONITOR FUNCTION The watchdog function monitors whether any of the CPUs mounted in the copier overrun If this function detects thata CP U overruns the copier automatically resets the CPU thereby restarting the logic circuit and mechanism Even if a copier CPU operates erratically due to electrical noise therefore the copier is able to recover from the faulty condition so that the number of visits made by the Technical Representative for CPU overrun can be minimized 1156SBM0501A 5 1 Configuration The copier has three printed circuit boards each on which a CPU is mounted SCP Board PWB F that controls the optical system Master Board PWB A that controls the copier Paper Feed Cabinet and Duplex Unit and MSC Board PWB B that controls the control panel and system In addition to these each of the control boards for the Data Controller Duplexing Document Feeder and S orter Staple Sorter is equipped with a CPU The watchdog functions are summarized as follows E ach of the copier CP Us monitors whether or not it overruns The MSC CPU monitors the communications conditions of the CPUs in the Duplexing Document F eeder and Data
7. 11 2 AE Sensor In the Auto Exposure Mode the AE Sensor on AE Sensor Board PWB H measures the intensity of the light reflected off the original by sampling the black white ratio of a 210 mm wide area of the original being measured According to this measurement the Exposure Lamp voltage is automatically increased or decreased so that copies of consistent guality are produced The output from the AE Sensor is applied to PWB A which in turn varies the duty ratio of the AVR Remote which varies the LA1 voltage accordingly Original Density B W Ratio High Low Intensity of Reflected Light Low High PWB H Output High Low AVR Duty Increased Decreased LA1 Voltage Increased Decreased Control Signal OFF WIRING DIAGRAM PWB H AE Sensor AVR Remote Signal P WB PWB A PJ 3A 2 output PWB A PJ 8A 13 M 26 1156SBM1103A 11 3 Lamp Reflectors The Main R eflector ensures thatlightfrom Exposure Lamp LA1 exposes all areas ofthe original The Auxiliary Reflector functions to reflect light onto the areas that LA1 cannot illuminate when an original that does not lie flat on the Original Glass such as a book is being used This reduces shadows which would otherwise be transferred to the copy The Main Reflector is of aluminum while the Auxiliary Reflector is aluminum to which film has been deposited The same film as thatused on the Auxiliary R eflector is affixed to both ends of the fr
8. EP5000 E P 4000 GENERAL MECHANICAL ELECTRICAL lt Z O gt 1151SBG000D SAFETY INFORMATION ALL Areas CAUTION Danger of explosion if battery is incorrectly replaced Replace only with the same or equivalent type recommended by the manufacturer Dispose of used batteries according to the manufacturer s instructions Denmark only ADVARSEL Lithiumbatteri Eksplosionsfare ved fejlagtig h ndtering Udskiftning m kun ske med batteri af samme fabrikat og type Lev r det brugte batteri tilbage til leverandgren Norway only ADVARSEL Eksplosjonsfare ved feilaktig skifte av batteri Benytt samme batteritype eller en tilsvarende type anbefalt av apparatfabrikanten Brukte batterier kasseres i henhold til fabrikantens instruksjoner Sweden only VARNING Explosionsfara vid felaktigt batteribyte Anv nd samma batterityp eller en ekvivalent typ som rekommenderas av apparattillverkaren Kassera anvant batteri enligt fabrikantens instruktion Finland only VAROITUS Paristo voi r j ht jos se on virheellisesti asennettu Vaihda paristo ainoastaan laitevalmistajan suosittelemaan tyyppiin H vit K ytetty paristo valmistajan ohjeiden mukaisesti 1149SBG000BA CONTENTS GENERAL the SPECIFICATIONS uec dnt detener de ctl ea G 1 2 PRECAUTIONS FOR INSTALLATION nnee G 4 3 PRECAUTIONS FOR SE Lco cta esos G 5 4 HANDLING OF THE CONSUMABLES nn G 6 5 SYSTEM OPTIONS nasce ti
9. Feed Roll Pressure Sprin GEOPE Drawer pring 4 Paper Take Up Roll Retraction Mechanism D When the drawer is slid out the rear end of the drawer on the take up side and the Pressure Release Lever push up the PaperTake Up Roll F eed Roll freeing the pa per from the Paper Take Up Roll Paper Take Up Roll F eed Roll Assy Front Pressure Release Lever 1134M021AA M 73 1156SBM1807A 18 7 Drawer Paper Take Up Control 1 Paper Take Up Motor Control DA stepping motor is used for the Paper Take Up Motor M11 12 Each motor is turned forward or backward by energizing its four internal coils using the pulse sig nals output from Master Board PWB A Main Drive Motor M9 ON OFF MM mn HE es eee OFF CL2 i i Vertical Transport Sensor EE PC63 PC64 RN EE FED TEE Ist 2nd Drawer Paper melt Take Up Sensor PC55 56 TE ro aL o m mz Ist 2nd Drawer Paper Take Up Motor M 11 12 1st sheet of paper 2nd sheet of paper take up start take up start 1134T14MCA T1 5 msec P aper take up off timer T2 5 msec Paper take up interval timer Control Signal Blocked Unblocked WIRING DIAGRAM PWB A PJ 19A 5 L H 32 M PWB A PJ 19A 2 32 N PWB A PJ 21A 5A 25 N PWB A PJ 21A 8A 25 0 PWB A PJ 21A 8B 32 M H H H H Control Signal Energized Deenergized WIRING DIAGRAM PWB A PJ 16A 1 Pulse output 25 K PWB A PJ 16A 2 Pulse output 25 L
10. Controller The Master CP U monitors the communications conditions ofthe CP Us in the Sorterand Staple S orter The control boards for the Paper Feed Cabinet and Duplex Unit do nothave a CPU in them Instead the Master CPU in the copier controls their operations Data Controller Duplexing Document Feeder Control Board Control Board PWB A Copier SCP Board PWB F Sorter Staple Sorter MSC Board PWB B Control Board PWB A Master Board PWB A ji C 2 Board on which a CPU is mounted Paper Feed Cabinet Duplex Unit Large Capacity Cassette M 8 1149SBM0502A 5 2 Watchdog Function Post Processing The following processing is performed if a faulty condition is detected in the CPU When the copier CPU is found faulty D All CPUs including those of the options are reset and the system is restarted If the CPU is found faulty during a copy cycle the system attempts to feed all sheets of paper outof the copier before resetting If paper is leftinside the copier the copier detects it as a misfeed as it is restarted When an option CPU is found faulty D The option relays are turned OFF and ON and all options are then restarted If the CPU is found faulty during a copy cycle the copier stops the paper take up seguence and feeds all sheets of paper out of the copier before resetting The Watchdog Counter available from the Tech Rep mode allow
11. Ru M 74 19 MULTI BYPASS TABLE FFF Ih M 76 19 1 Paper Take Up Mechanism VFFY FF Y M 77 19 2 Paper Separating Mechanism nanne M 78 19 3 Paper Empty Detection FF FFF eee M 79 20 21 22 23 24 25 26 CONTENTS VERTICAL PAPER TRANSPORT sss M 80 SYNCHRONIZING ROLLERS oe M 81 21 1 Synchronizing Roller Drive Mechanism M 82 21 2 Paper Dust Remover on M 82 21 3 Synchronizing Roller Control YFFF Yd M 83 21 4 Prevention of Low Image Density on Copy M 84 PAPER TRANSPORT eem Erreur dos M 86 22 1 Suction Belt Drive Mechanism nnn M 87 EUSING UNEF ce ug ria ot SR eot Mid ott tous Reate tios M 88 23 1 Fusing Temperature Control M 89 23 2 Fusing Rollers Pressure Mechanism M 90 23 3 Cleaning Roller M 91 23 4 Paper Separator Fingers uns M 92 23 5 Fusing Section Cooling Fan Yu M 93 EXIT UNITS Oane voetenbaden ette Roe Rita RA eet dos M 94 24 1 Detection of Left Upper Door in Position M 95 DEHUMIDIFYING SWITCH YY A n M 96 MEMORY BACKUP eee tct nen d e etc M 97 1151SBG000CA GENERAL 11565BG0100A BW SPECIFICATIO NS TYPE PHOTOCONDUCTOR COPYING SYSTEM PAPER FEEDING SYSTEM EXPOSURE SYSTEM DEVELOPING SYSTEM CHARGING SYSTEM IMAGE TRANSFER SYSTEM PAPER SEPARATING SYSTEM FUSING SYSTEM PAPER DISCHARGING SYSTEM MAXIMUM ORIGINAL SIZE COPY MEDIUM Co
12. Sheet of Paper of Paper Control Signal Energized Deenergized WIRING DIAGRAM PWB A PJ 15A 12 32 P PWB A PJ 15A 9 PWB A PJ 15A 10 32 P 1156SBM1902A 19 2 Paper Separating Mechanism The paper separating mechanism ensures that only the top sheet of paper is fed in by separating the second sheet of paper from the top one This is accomplished by the Torgue Limiter fitted to the Separator R oll shaft which stops the Separator Roll when there is a change in friction between the F eed and S eparator Rolls F or details ofthe paper separating mechanism see 18 PAPER TAKE UP FEED SEC TION M 78 1156SBM1903A 19 3 Paper Empty Detection The Multi Bypass Table is equipped with Manual Feed Paper Empty Sensor PC51 which detects a sheet of paper at the manual bypass port Manual Feed Paper Empty Sensor PC51 Paper Take Up R oll Paper Stopper 1139M092AA Actuator Control Signal Blocked Unblocked WIRING DIAGRAM PC51 PWB A PJ 15A 14 H L 32 0 M 79 1156SBM2000A VERTICAL PAPER TRANSPORT The sheet of paper taken up by the Paper Take Up Roll from the Drawer is fed along the Paper Guide to the Vertical Transport Rollers The paper fed by the Vertical Transport Rollers reaches the Transport Rollers and is then fed up to the Synchronizing Rollers The Transport Rollers are turned and stopped by Paper Transport Clutch CL1 The Transport Rollers are coupled to the Vertical Tran
13. for different ambi 4425M012AA ent conditions and types of paper being used which often causes the S eparatorR oll to be sta Driven or stationary tionary lt Double Feeding gt D Since the coefficient of friction between the top side ofthe first sheet of paper and the Feed Roll KSO Rell is greater than that between the first and second eR sheets of paper the first sheet of paper is fed EP into the copier by the Feed Roll ofPaper Since the friction coefficient between the se 2nd cond sheet of paper and the Separator Roll sheet of Paper A is greater than that between the first and se 4425M013AA cond sheetof paper the Separator Roll is not Separator R oll Stopped driven and holds the second sheet of paper M 72 3 Paper Pressure Releasing Mechanism D If the drawer is pulled out while the paper is between the Feed Rolland the Separa tor Roll the paper is left in the copier Removal of the paper is difficult With this copier sliding outthe drawer automatically disengages the paper and P aper Take Up Feed Roll D The Paper Pressure Releasing Mechanism makes it easier to remove a sheet of paper held between the Feed Roll and P aper Separator Roll by just sliding out the drawer When the drawer is pulled out the pressure release rail pushes down the Separator Roll Assy disengaging the Feed Roll from the Separator Roll Drawer in Position Drawer Slid Out Separator Roll Assy 4 Approx 2mm
14. of 1 on the preceding page m Approx 3 ON Exposure Lamp LA1 BOLLEN Fusing Section Cooling Fan Motor M15 3 Varies for different ON drawers m Paper Transport Clutch CL1 ONES 1st Drawer Paper Take Up Motor M11 1st Drawer Vertical Transport Sensor PC63 is blocked E Approx 5msec OEE M11 Paper Leading Edge Detecting Sensor PC55 is blocked OFF Approx 45msec CL1 D SCP Board PWB F outputs a LOW BASE signal to Master Board PWB A OFF Approx 75msec LA3 Leading edge erase 65msec M 6 PWB F outputs a LOW TRON signal to PWB A ON ON CL1 gt Synchronizing Roller Clutch CL2 ON Approx 170msec Separator Solenoid SL1 Approx 150msec OFF ci PWB F outputs a LOW SCEND signal to PWB A Approx 200msec m gt SCAN signal H The Scanner stops and starts a return motion OFF Approx 250msec LA1 The trailing edge of the paper moves past Transport Roller Sensor PC54 unblocked F Br Approx 5msec DOES CL1 The trailing edge of the paper moves past Paper Leading Edge Detecting Sensor PC55 unblocked H
15. the surface of the paper For more details see 14 IMAGE TRANSFER AND PAPER SEPARATION 8 Paper Separation The single wire P aper Separator Corona Unit applies an AC corona emission to the underside of the paper to neutralize the paper In addition mechanical paper separation is provided by the two PC Drum Paper Separator Fingers fitted to the Imaging Unit For more details see 14 IMAGE TRANSFER AND PAPER SEPARATION 9 Cleaning Residual toner on the surface of the PC Drum is scraped off by the Cleaning Blade For more details see 16 CLEANING UNIT 10 Main Erase Light from the Main Erase Lamp neutralizes any surface potential remaining on the surface of the PC Drum after cleaning For more details see 17 MAIN ERASE LAMP 11 Transport The paper is fed to the Fusing Unit by the Suction Belts For more details see 22 PAPER TRANSPORT 12 Fusing The developed image is permanently fused to the paper by a combination of heat and pressure applied by the Upper and Lower Fusing Rollers For more details see 23 FUSING UNIT 13 Paper Exit After the fusing process the paper is fed out by the Paper ExitRoller onto the Copy Tray For more details see 24 EXIT UNIT M 3 1156SBM0300A DRIVE SYSTEM The Main Drive Motor provides drive forthe entire mechanism ofthe copier To help mini mize operating noise timing belts and plastic gears are used in la
16. 17 L 8 1 2 11 L 8 1 2 11 C L Lengthwise C Crosswise E P4000 Zoom Ratio Zoom Ratio Size t 11 17 L 8 12 11 L Metric 8 1 2 11 C L Lengthwise C Crosswise ZOOM RATIOS Area a Mode Metric Inch Full Size 1 000 1 000 0816 m Fixed Reduction 0 707 0 647 0 500 0 500 1154 x Enlargement 1 414 1545 2 000 2 000 Variable 5096 to 20096 in 0 196 increments LENS Through Lens F 26 f 2 190 mm EXPOSURE LAMP Halogen Frost Tube Lamp FUSING 200 C TEMPERATURE G 2 POWER CURRENT CONSUMPTION Copier Only EP5000 Fusing Heater Max Power Lamp Consumption Rating Exposure Lamp Rating 1390 W 1450W 1480 W 80 V 115 120 V 262W 950W 160 V 220 240 V 1410W 290 W 1000 W 1550 W EP4000 Fusing Heater Max Power Lamp Consumption Rating Exposure Lamp Rating 1250 W 1330 W 1400 W 80 V 115 120 V 262W 900 W 160 V 220 240 V 1360 W 290 W 950 W 1500 W POWER 115 V 120 V 127 V 220 240 V 50 60 Hz REQUIREMENTS ENVIRONMENTAL CONDITIONS Temperature 10 to 30 C with a fluctuation of 10 C or less per hour Humidity 15 to 8596 RH with a fluctuation of 1096 RH orless per hour Ambient Illumination 3 000 lux or less Levelness 1 1 75 mm 100 mm DIMENSIONS Width 620 mm 24 1 2 Copier Only Depth 740 mm 27 Height 9
17. 41 0 M 63 Paper Stack Lowering Drawer Lock z Paper Stack Lowering D When the Paper Descent Key UN5 6 is pressed or the drawer runs out of paper during a copy cycle the Lift Up Motor M13 14 is energized to turn backward D The rotation of the motor is transmitted via a gear train to the worm gear and Paper Lifting Arm mounted on the same shaft lowering them D When the Lower Limit Position Sensor P C70 71 is blocked by the light blocking plate ofthe worm gear it deenergizes the Lift Up Motor M13 14 This completes the paper stack lowering motion ata paper empty condition D When the Paper DescentKey UN5 6 is pressed the Lift Up Motor is deenergized when the Lower Limit Position Sensor PC70 71 is unblocked after it has been blocked This unlocks the drawer For more details see Drawer Locking Mecha nism that follows 1st 2nd Drawer Lower Limit Light Blocking Rlate s Position Sensor PC70 71 z Drawer Locking Mechanism DThe Lock Lever on the bottom of the drawer con tacts the Drawer Guide Frame of the copier and slides over the frame D The draweris locked in the copier when the Lock Le Pi NUN ver drops into the slot in the Drawer Guide Frame P dto When Drawer is Slid in Drawer Guide Frame 1134M034EA Lock Lever D Pressing the Paper Descent Key UN5 6 starts the When Drawer is paper lowering motion Unlocked DThe worm gear is turned downwa
18. 54AA 1139M047AA Cleaner Lever Cleaner ON Start Key OFF l ade ON Main Drive Motor M1 OFF ON i Paper Separator Corona OFF 6 Approx O15sec 53OFF 1 Image Transfer Corona ON OFF i Approx 0 3sec 1151T07MCD Control Signal WIRING DIAGRAM Image Transfer PWB A PJ 13A 2 3 F Corona Paper Separator Corona PWB A PJ 13A 3 3 F 1156SBM1401A 14 1 Ozone Filter Ozone produced by the Image Transfer P aper S eparator Coronas is absorbed by the Ozone Filter on the back of the copier Itis absorbed from the air being drawn out of the copier through the Duct under the Suction Deck by Suction Fan Motor M4 Duct To Ozone Filter Image Transfer P aper Separator Coronas 1136M056AA M 49 PAPER SEPARATOR FINGERS After image transfer an AC corona emission is applied to the underside ofthe paper by the Paper Separator Corona to neutralize the paper so that it can be easily separated from the PC Drum To further ensure thatthe paper is positively separated from the PC Drum there are two Paper Separator Fingers attached to the Imaging Unit They physi cally peel the paper off the surface of the PC Drum To preventthe Paper Separator F ingers from damaging the surface ofthe P C Drum they are keptin the retracted position whenever they are notatwork As illustrated below the Fingers are brought into contact with and retracted from the surface of t
19. 60 mm 37 3 4 including Original Cover and Paper Feed Cabinet WEIGHT EP5000 with Paper Feed Cabinet 123 5kg 272 1 4lbs EP 4000 with Paper Feed Cabinet 122 0kg 269lbs excluding the Copy Tray starter toner and paper G 3 1149SBG0200A PRECAUTIONS FOR INSTALLATION J J J Installation Site To ensure safety and utmost performance of the copier the copier should NOT be used in a place F Where it will be subjected to extremely high or low temperature or humidity Which is exposed to direct sunlight Which is in the direct air stream of an air conditioner heater or ventilator Which puts the operator in the direct stream of exhaust from the copier Which has poor ventilation Where ammonia gas might be generated Which does not have a stable level floor Where itwill be subjected to sudden fluctuations in either temperature or humidity If a cold room is guickly heated condensation forms inside the copier resulting in blank spots in the copy Which is near any kind of heating device Where it may be splashed with water Which is dirty or where it will receive undue vibration Which is near volatile flammables or curtains Ti Tb EC IC Ti 7H TA TI T1 H Power Source Use an outlet with a capacity of 115 120 127V 1480W or more or 220 240V 1550W or more F Ifanyotherelectrical equipmentis sourced from the same power outlet make sure that the capacity of the outlet is
20. 642 74 84 r t fe re e e e e f t de fe fe t f 0 643 0 672 85 95 M t t f f fe f f f f f f f f f 0 673 0 698 96 203 r t t t t t t t f f f f f f 0 699 0 728 204 211 r f f f f f f f f f f f f 0 729 0 758 212 220 r r r e fe t fe f f f f f 0 759 0 776 221 229 r f f t t f f f f f f 0 777 0 806 230 235 r r t t f f f f f f 0 807 0 830 236 244 r f f t f f f f f 0 831 0 854 245 251 r 5 t f f t f f 0 855 0 882 252 258 r t t t r f f 0 883 0 914 259 267 r r t t f f 0 915 0 938 268 277 t t t f f 0 939 0 964 278 284 t t t f 0 965 0 990 285 292 t t f 0 991 293 298 f f LED that turns ON M 21 LA2 LEDs ON OFF Pattern Frame Erase erase width 10mm Paper LED Group No Width mm 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 30 31 105 t M f AOE f f f f f f f Tt TE det f f f E lt f f t f f f t f 06 113 lr f t M t t e fe t fe de fe fe de ebe de e e de e f t t f 14 21 re e 6 e e de e fe fe fe fe fe de e e fe e e fe ee e tolt 22 30 t t fr fe t de Me fe fe oe e e oe e Je fe fe fe fe fe f f of t f 31 140 t t t t t f f f f f f f f f f f f f f f f f f f
21. 7A Pulse output 1 4 Grid voltage and T C correction The Image Erase Lamp produces a solid black pattern on the surface of the PC Drum and the AIDC Sensor reads the pattern The grid voltage is then varied so thatthe outputfrom the AIDC Sensor remains ata given level or higher which en sures that the toner to carrier ratio on the surface of the PC Drum becomes constant If an even greater solid black density is required when the upper control limit of the grid voltage has already been reached the target control value of T C is raised in 0 596 steps up to 796 thus terminating the adjustment sequence Control Value 1 Step Initial Value Grid Voltage 550 to 790V 30V 550V M 14 Relation with Image Density The Image Exposure function of Tech Rep Choice available from the Tech Rep mode enables fine adjustments ofthe grid voltage solid black image density to be made Itspecifies how many volts the optimum grid voltage determined by the image stabilization control is to be increased or decreased This fine adjustment value remains the same even when the optimum grid voltage is later varied by the image stabilization control Controlled Part Control Signal WIRING DIAGRAM Grid voltage output from High Voltage Unit HV1 PJ 13A 1 Pulse Output 3 F Optimum Exposure Lamp voltage correction The Exposure Lamp is turned ON to illuminate the halftone patch on the back of the Original Width Scale thereby prod
22. BM0100A El CROSS SECTIONAL VIEW Or O Sd enc gna oU TUE 3rd Mirror 2nd Mirror 1st Mirror Exposure Lamp Ventilation Fan Motor Ozone Filter Lens Main Erase Lamp Cleaning Blade PC Drum Charge Corona PC Drum 6th Mirror Image Erase Lamp 4th Mirror 5th Mirror Sub Hopper Transport Roller M 1 1134M001AB Manual Bypass Take Up Roll Upper Vertical Transport Roller Lower Vertical Transport Roller 2nd Drawer P aper Take Up Roll 1st Drawer Paper Take U p R oll S ynchronizing R oller Image Transfer P aper Separa tor Coronas Main Drive Motor Suction Belt Fusing Roller 1st Paper Exit Roller 2nd Paper Exit Roller E xit Duplex Switching Guide 1156SBM0200A Ell copy process LES men mm LEI ALE ce Ga pi nmi pi mr FL pic 1 PC DRUM 8 PAPER SEPARATION 2 DRUM CHARGING 9 CLEANING 3 IMAGE ERASE 10 MAIN ERASE Cel 4 EXPOSURE 11 TRANSPORT 1139M002AA 5 DEVELOPING 12 FUSING 6 PAPER FEEDING 13 PAPER EXIT 7 IMAGE TRANSFER 1 PC Drum The PC Drum is an aluminum cylinder coated with a photosensitive semiconductor Itis used as the medium on which a visible developed image of the original is formed For more details see 8 PC DRUM 2 Drum Charging The PC Drum Charge Corona Unit is eq
23. ERASE LAMP To preventa black band from occurring across both the leading and trailing edges and along the frontand rear edges ofthe electrostatic latentimage 40 LE Ds of Image Erase Lamp LA3 are turned ON before development takes place thereby reducing to a minimum the unnecessary potential on the surface of the PC Drum PC Drum Charge Corona E xposure o Image Erase Lamp LA3 a 1156M010AA The position of LA3 can be adjusted using the adjusting screw atthe front of the copier Copier Front Frame Adjusting Screw Copier Rear Frame LA3 Board Compression Spring 1156M011AA M 19 The 40 LEDs are grouped as follows and turned ON and OFF according to the paper size and zoom ratio n the full size mode ON OFF control is provided according to the paper size n any zoom ratio other than full size the copier compares the number of LEDs that areturned ON according to the papersize with the numberthatare turned ON according to the zoom ratio and uses the one that turns ON more LEDs The zoom ratio is used to provide ON OFF control ofthe LEDs if papersize is notinput in manual bypass copying since the copier is unable to detect the paper size LED Group No LED No LED Group No LED No 0 LED1 16 LED 17 1 LED 2 17 LED 18 2 LED 3 18 LED 19 3 LED 4 19 LED 20 4 LED 5 20 LED 21 5 LED 6 21 LED 22 6 LED 7 22 LED 23 7 LED 8 23 LED 24 8
24. F WIRING DIAGRAM AE Sensor Board PWB H PJ3A 2 Pulse Output 12 B M 15 1149SBM0800A BH PC DRUM The photoconductive drum used in this copieris the organic photoconductor OP C type The drum is made up of two distinct semiconductive materials on an aluminum alloy base The outer ofthe two layers is called the Charge Transport Layer CTL while the inner layer is called the Charge Generating Layer CGL The PC Drum has its grounding point inside at the rear end When the Imaging Unit is installed in the copier the shaft on which the PC Drum Drive Coupling Gear is mounted contacts this grounding point Handling Precautions This photoconductor exhibits greatest light fatigue after being exposed to light over an extended period of time It must therefore be protected from light by a clean soft cloth wheneverthe Imaging Unithas been removed from the copier Further use utmostcare when handling the PC Drum to prevent it from being contaminated PC Drum Cross Sectional View PC Drum CTL CGL Aluminum Cylinder 1139M007AA 1139M006AA Shaft Grounding Point ahr Grounding 1139MO08AA igi PC Drum Drive Coupling Gear M 16 1156SBM0900A Ell DRUM CHARGING The PC Drum Charge Corona has a Scorotron grid to deposit a negative DC charge evenly across the surface ofthe PC Drum The grid voltage VG applied to the gridmesh is selected between 550V initial value variable according to image stabilizat
25. LED 9 24 LED 25 9 LED 10 25 LED 26 10 LED 11 26 LED 27 to 35 11 LED 12 27 LED 36 12 LED 13 28 LED 37 13 LED 14 29 LED 38 14 LED 15 30 LED 39 15 LED 16 31 LED 40 The bigger the number the nearer the LED is to the front side of the copier M 20 LA2 LEDs ON OFF Pattern Paper LED Group No Zoom Ratio Width mm 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 177 18 19 20 21 22 23 24 25 26 27 28 31 91 f if jf f f f f f jf f f f f f f f f f f f f f f f f f f 92 99 r Ir t t t t t fe fe e Ie fe e de fe e fe fe e de fe fe fe fe f 00 07 r e fe fe fe e de fe fe de fe e de fe e de fe e e de fe de fe f f 08 16 r r e fe fe e fe fe e de fe e fe fe e fe fe fe de de e de fe f 17 26 t t t lt t f t f f fe f f f f f f f f f f f f f 27 35 t t t t t t f ft f t pf f f f f f f f f f f f 36 42 t t fe t fe fe fe t fe fe t de t f fe t fe t t f f 0 522 43 49 t t f f f f f f f f f f de f f f f f f f 0 523 0 550 50 58 t f t f f f f f f f fe f f f f f f f f 0 551 0 576 59 66 t t t t fe fe fe fe fe f fe fe fe err f f 0 577 0 610 67 73 f e fe de fe le ee fe fe fe fe f fe f f f 0 611 0
26. WB A P 26A 9 Control Signal 25 H WIRING DIAGRAM PWB A P 25A 2 25 K PWB A P 25A 5 M 70 25 1156SBM1806 18 6 Paper Take Up Mechanism 1 Paper Take Up Mechanism D The paper take up and feeding mechanism takes up paper from the drawer and feeds itto the Vertical Transport Roller D The take up mechanism is driven by 1st 2nd DrawerP aper Take U p Motor M11 12 D Each paper take up mechanism consists of a Paper Take Up Roll Feed Roll and Separator R oll with torque limiter D TheSeparatorR ollis controlled by the torque limiterso thatitwill nottransportmore than one sheet of paper ata time 1stDrawer Paper Take Up Motor M11 Paper Take Up R oll RF Paper Separator Rol f GS Torque Limiter 4425M011AA M 71 2 Paper Separating Mechanism D The paper separating mechanism ensures that only the top sheet of paper is fed in by separating the second sheet of paper from the top one D This is accomplished by the difference in friction coefficient between the first and second sheets of paper lt Normal Feeding gt Feed Roll VEN Paper Separator R oll D When only one sheet of paper is fed the friction coefficient on the top side of the paper is equal to that on the underside D Driven by the Feed Roll the paper drives the SeparatorR oll This causes the paperto be sent to the Vertical Transport S ection D The friction coefficient varies
27. aking a large number of copies continuously F Never use flammable sprays near the copier F Ifthe copier becomes inordinately hotor produces abnormal noise turn itOFF and unplug it F Donotturn ON the Power S witch atthe same time when you plug the power cord into the outlet F When unplugging the power cord do not pull on the cord hold the plug and pull it out F Do not bring any magnetized object near the copier F Do not place a vase or vessel containing water on the copier F Be sure to turn OFF the Power Switch at the end of the workday or upon power failure F Use care notto drop paper clips staples or other small pieces of metal into the Copier J Operating Environment The operating environmental requirements of the copier are as follows J D Temperature 10 C to 30 C with a fluctuation of 10 C per hour D Humidity 15 to 85 RH with a fluctuation of 10 RH per hour Power Requirements The power source voltage requirements are as follows D Voltage Fluctuation AC115 120 127 220 240V O 1096 Copying performance assured 1596 P aper feeding performance assured D Frequency Fluctuation 50 60 Hz 0 3 G 5 1151SBG0400A E HANDLING OF THE CONSUMABLES Before using any consumables always read the label on its container carefully F Use the right toner The applicable copier model name is indicated on the Toner Bottle F Papercan to be easily damaged by dampness To prevent a
28. ame to compensate for the reduced intensity of light around both ends of the Exposure Lamp Auxiliary Reflector Auxiliary Reflector Main Reflector Exposure Lamp LA1 1151M021AA 1156SBM1104A 11 4 Aperture Plates F our Aperture Plates are moved to the front or rear to ensure even light distribution Aperture Plate 1139M035AA M 27 1156SBM1105A 11 5 Scanner and 2nd 3rd Mirror Carriage Movement The Scanner and 2nd 3rd Mirrors Carriage are moved by the S canner Drive Cable fitted in the rear side of the copier The Cable is driven by Scanner Motor M2 Both the S canner and 2nd 3rd Mirrors Carriage slide along the ScannerS haftat the rear side While atthe frontside there is a Slide Bushing attached to the underside of each ofthe bodies and that Bushing slides over the Slide Rail The speed of the Scanner and 2nd 3rd Mirrors Carriage varies with different zoom ratios S canner R eference Position S ensorP C81 detects the home position ofthe Scanner and 2nd 3rd Mirrors Carriage If they are notatthe home position when the copier is turned ON M2 is energized to move them to the home position Scanner Motor M2 Scanner Reference Scanner Shaft Position SensorPC81 Rear 1st Mirrors Carriage 2nd Mirrors Carriage 1156M013AA Front M 28 The Scanner starts the scan motion as a Scan signal is output from PWB A At the start of a scan motion and other heavy load cond
29. aper misfeeds Upper Synchronizing Roller Paper Dust Remover Dp Guide Plates Lower Synchronizing Roller 1136M050AA Paper Leading Edge Detecting Sensor PC55 Upper Synchronizing Roller Lower Synchronizing Roller ae Torsion Spring 1136M051AA M 81 1156SBM2101A 21 1 Synchronizing Roller Drive Mechanism e The Upper Synchronizing Roller receives drive from Main Drive Motor M1 via a gear train and timming belt The Upper Roller drives the Lower one Upper Synchronizing Roller Synchronizing Roller Clutch CL2 To Main Drive Motor M1 Timing Belt 1136M052AA 1156SBM2102A 21 2 Paper Dust Remover The Paper Dust Remover is installed so that it makes contact with the Upper Synchronizing Roller Since the Upper Synchronizing Roller is covered with a vinyl tubing triboelectric charging occurs as the Roller turns in contact with the Paper Dust Remover As paper is then fed between the Synchronizing Rollers the charges on the tubing attract paper dust from the paper The dustis then transferred onto the Paper Dust Remover The Paper Transport Rollers are also provided with a paper Dust Remover Upper Synchronizing Roller Paper Dust Remover Lower Synchronizing Roller 1136M026AA M 82 1156SBM2103A 21 3 Synchronizing Roller Control The Synchronizing Rollers are started as Synchronizing Roller Clutch CL2 is energized upon reception of a signal from PWB A Paper Leading Edge Dete
30. automatically selects thatsecond paper source to ensure an uninterrupted copy cycle Automatic Drawer S witching 1st 2nd Drawer Paper 1134M036EA Empty Board PWB E1 E2 Control Signal Blocked Unblocked WIRING DIAGRAM PWB A PJ 23A 9 L H 42 L PWB A PJ 23A 12 L H 42 P M 67 1156SBM1805A 18 5 Universal Tray 2nd Drawer Paper Size Detection D The length feeding direction and width crosswise direction of the paper are inde pendently detected and the copier determines the paper size by combining the two separate detections made The Universal Tray 13 x or 14x function of Tech Rep Choice must be set for the width CD of FLS 13 or 14 long in the feeding direc tion D On the bottom ofthe tray is a leverfitted to the Trailing Edge Stop and another lever fitted to the Edge Guide These levers actuate activate and deactuate deacti vate the paper size detecting switches and sensors to allow the copier to deter mine a particular paper size Detection in the Feeding Direction Paper Size Detecting Switch Assy FD 561 62 Cam Tray Frame Trailing Edge Stop 1149M015AA Detection in the Crosswise Direction Paper Size Detecting Sensor Assy CO p d Pd Edge Guide M 68 1149M016AA D Paper Size Detecting Switches S ensors Length FD S61 pr Width CD PC72 ME gj
31. bilization Control Processing Timing DThe image stabilization controls use the AIDC Sensor and AE Sensor as the basis performing the following four major types of processing The grid voltage T C and optimum Exposure Lamp corrections are not however made if T C falls outside the range of 4 to 8 at adjustment AIDC Sensor adjustment Q Grid voltage and T C correction Optimum Exposure Lamp voltage correction amp AE Sensor gain adjustment DProcessing Timing Timi Processing Item ming f Performed Not performed Processing Order Q 9 0 Initial setting Atthe initial setup or when the FF or f f f f F5 test operation is run after the PC 1 Drum has been replaced Regular correction Upon completion of the copy cycle for f f f f every 400 copies made in terms of the number of intermittent copies as itis equivalent to the time over which the PC Drum turns Correction im During warming up immediately after f f f f mediately after S1 the Power Switch has been turned ON is tumed ON 3 Correction for a Upon completion of the copy cycle for f f f faulty AIDC every 75K copies made in terms of the 2 2 Sensor number of intermittent copies as it is equivalent to the time over which the PC Drum has turned after a faulty AIDC Sensor was detected 1 T C is not corrected when an F5 test operation is run 2 The grid voltage is increased by 30V and the optimum E xpo
32. ble Box in Position Areas Type of Box Detection Large Capacity Toner EP5000 All areas i PC31 in Cabinet Collecting Box in Cabinet U S A Canada Large Capacity Toner PC31 in Cabinet and Europe Collecting Box in Cabinet EP4000 Standard Toner collecting Box in Other areas PC107 in Copier copier M 54 2 Detection of Toner Collecting Box in Position D Provided inside the P aper Feed Cabinet in the copier for E P 4000 forthe areas oth er than the U S A Canada and Europe is a Toner Collecting Box Set Sensor If no box is installed the sensor causes a warning message to appear on the Touch Panel and the initiation of a new copy to be inhibited Toner Toner PWB A i D Pipe Pipe 1 Ke bd Toner ce Collecting ll Box l TRES Toner Collecting h Box Set Sensor PC107 Cabinet i Actuator Toner Coll cting Box Actuator EP 4000 except U S A Canada and Europe 1134M030AA 1134M037EA Controlled Part Control Signal Blocked Unblocked WIRING DIAGRAM PC107 PWB A PJ 19A 9 L H 21 F M 55 1156SBM1602A 16 2 Cleaning Bias Optional Exceptthe U S A Canada and Europe A Cleaning Bias Seal is optionally available that can be fitted to reduce damage to the PC Drum from acid paper Toner Antispill Mylar PC Drum cric DSL 1139M023AA Cleaning Bias Seal ON Start Key OFF l pos ON l Main Drive Motor M1 OFF ON Cl
33. ble feed paper take up control uses the second sheet of paper for the next copy cycle without causing a paper misfeed Iteliminates a paper misfeed that would other wise result when two sheets of paper are taken up at once D If the second sheet of paper is stationary blocking P C55 56 when the trailing edge of the first sheet of paper moves past Vertical Transport Sensor P C63 P C64 the copier determines that itis a double feed condition and provides double feed con trol DIf however the second sheet of paper has reached the Vertical Transport R oller the double feed control is not provided since the paper is fed further into the copier by the Vertical TransportR oller This could result in a paper misfeed or the second sheet of paper being fed through the copier with the first one Paper Path Position of Leading Edge of 2nd Sheet of Paper PC54 Detection Point t Double Feed Control PC63 Detection Point 4 NotProvided For Paper Feeding PC55 Detection Point Provided from 1st Drawer PC64 Detection Point N PC56 Detection Point Not Provided For Paper Feeding iP rovided from 2nd Drawer 4 1149M019AB 1156SBM1900A MULTI BYPASS TABLE Construction The Multi Bypass Table fitted to the Right Door ofthe copier is integrated into the copier Itis constructed as follows Lever Right Cover Paper Empty Sensor Right Door Cover Multi Bypass Table Manual Feed P aper Tak
34. bsorption of moisture store paper which has been removed from its wrapper but not loaded into the Drawer in a sealed plastic bag in a cool dark place F Keep consumables out ofthe reach of children F Do nottouch the PC Drum with bare hands F Store the paper toner and other consumables in a place free from directsunlight and away from any heating apparatus F The same sized paperis oftwo kinds shortgrain and long grain S hortgrain paper should only be fed through the copier crosswise long grain paper should only be fed lengthwise F If your hands become soiled with toner wash them with soap and water immediately F Donotthrow away any used consumables P C Drum starter toner etc They are to be collected NOTE Do not burn bury in the ground or throw into the water any consumables PC Drum starter toner etc G 6 11565BG0500A SYSTEM OPTIONS 9 10 1 2 11510007AA 13 1149M026AA 11360061AA 40005AA 113900020A 113900030A 113901212A 113900180A 4 113901222A 1 Automatic Document Feeder AF 5 8 10 Bin Staple Sorter ST 104 2 Duplexing Document Feeder AFR 13 9 20 Bin Sorter S 208 3 PaperFeed Cabinet PF 105 10 20 Bin Staple Sorter ST 211 4 Duplex Cabinet PF 5D 11 Data Terminal 5 PaperFeed Cabinet PF 205 12 Data Controller D 102 6 Duplex Unit AD 9 13 Large Capacity Cassette C 301 7 10 Bin Sorter S 106 1151SBM000CA MECHANICAL ELECTRICAL 1156S
35. copier Avoid casual use ofF8 Ifthe setting value has been cleared because ofthe RAM Board being replaced use the Level History function ofthe Tech Rep mode to return the ATDC R ef Value to the original value before the board was replaced Standard WIRING DIA Controlled Part Control Signal T C Ratio Output Voltage GRAM 6 0 2 5 V 1 J M 42 Toner Replenishing Control by ATDC Sensor The ATDC Sensorsamples T C for each copy and the copier compares the reading with the reference T C which is normally 6 but may 7 depending on the image stabilization control provided energizing Sub Hopper Toner R eplenishing Motor M9 as may be necessary to replenish toner in either of the following four modes Toner Replenishing Mode Conditions Amount Replen ished Large amount replenishing The ATDC Sensor reading is lower than Approx 133 mg reference T C by 0 596 or more Small amount replenishing The ATDC Sensor reading is lower than Approx 66 mg reference T C by less than 0 596 Fixed amount replenishing The ATDC Sensor reading is higher than Approx 13mg reference T C by less than 196 No toner replenishing The ATDC Sensor reading is higher than reference T C by 196 or more The amountoftoner replenished varies according to the papersize given in the table are figures for A4 The copier is also provided with a function that if T C detected during a copy cycle is lowe
36. cting Sensor PC55 i 7 rm Approx 110msec raten Approx 110msec i Approx i 1 H H i 110msec ON Cl or SE TRON EP5000 95msec 1151T11MCD Control Signal Energized Deenergized WIRING DIAGRAM CL2 PWB A PJ14A 4 L H 7 G Control Signal Blocked Unblocked WIRING DIAGRAM PC55 PWB A PJ19A 2 L H 32 N M 83 1156SBM2104A 21 4 Prevention of Low Image Density on Copy During conditions of high humidity when the paper is damp charges tend to flow from the Image Transfer Corona through the paper and quide plates to the ground This results in low image density on the copies To prevent this from occuring a plastic spacer is installed between the copier frame and each quide plate around the Synchronizing Rollers so that it remains insulated Instead of using the plastic spacer an electrodeposition coating has been applied to some of those quide plates If however the resistance with the ground is made infinity the guide plate would build up charges and a spark could occur with other guide plates resulting in a malfunction To preventthis a resistor and a varistor are connectedto the guide plates The guide plates are connected by flat springs as illustrated below Synchronizing Rollers Manual Bypass Feed Separator Rolls Transport Rollers Varistor Upper Vertical Resistor Transport Rollers 1136M053AA No Guide Plate Name Insulation Metho
37. d Upper Pre Synch Guide Plate Plastic Spacer Lower Pre Synch Guide Plate Plastic Spacer Upper Transport Roller Guide Plate None Fitted to top of guide plate no amp Lower Transport Roller Guide Plate Plastic Spacer Manual Bypass Guide Plate Electrodeposition Coating Vertical Transport Guide Plate Plastic Spacer O Pre Image Transfer Guide Plate aU Image Transfer Pa M 84 Flat Spring Connection A Between varistor and resistor and guide plate B Between varistor and resistor and guide plate C Between guide plates and D Between guide plates and Between guide plates and M 85 1156SBM2200A PAPER TRANSPORT e Suction Fan Motor M4 draws the paper onto the turning Suction Belts It also pulls the paper down as it reaches the Pre Fusing Guide Plate to ensure that the paper is smoothly fed into the Fusing Unit e As M4 turns ozone produced by the Image Transfer Paper Separator Coronas is absorbed by the Ozone Filter from the air being drawn out of the copier Suction Fan NY Ozone Filter CA aN sc Suction Belts Suction Drive e M Transport Section Release Lever 1136M070AA Controlled Part Control Signal Half Speed Full Speed wiring DIAGRAM M4 PWB A PJ15A 4 L H 21 G M 86 1156SBM2201A 22 1 Suction Belt Drive Mechanism The Suction Belts are driven by Main Drive Motor M1 throug
38. d malfunction count may be less than five The display also tells the condition when the image stabilization controls are not properly working DForthe details ofthe Isolated malfunction codes see TROUBLESHOOTING forthe copier and the specific SERVICE MANUAL for the options M 10 1149SBM0700A IMAGE STABILIZATION SYSTEM z The following image stabilization controls are provided to ensure stabilized copy image Item Ouality Purpose Control Initial Setting Image density To make initial settings of Sets the initial values for grid gradation grid voltage Vg optimum voltage correction optimum Exposure Lamp voltage and Exposure Lamp voltage AE Sensor gain correction and AE Sensor gain adjustment Regular correction Image density To compensate for any drop Corrects the grid voltage in image density due to a through AIDC Sensor deteriorating PC Drum control Gradation To compensate for any drop Corrects the optimum in the intensity of LA1 light Exposure Lamp voltage due to a contaminated through AIDC control optical system Foggy To keep a given Provides toner replenishing background toner to carrier ratio of the control by means of the developer in the Developer ATDC Sensor For details Mixing Chamber see 13 DEVELOPMENT Correction made Image density To compensate for any drop Corrects the grid voltage and immediately after gradation in PC Drum surface potential opti
39. e Up Clutch Manual Feed Paper Take Up Solenoid Paper Stoppers Manual Bypass Take Up R oll 1136M045AA Upper Transport Roller Raper Empi Sensor Manual Bypass Feed Roll Manual Bypass Take Up Roll Paper Empty Lower Transport Roller Paper Stopper Multi Bypass Table Sensor Actuator Manual Bypass Separator Roll 1136M088AA M 76 1156SBM1901A 19 1 Paper Take Up Mechanism The Paper Take Up Rolls are normally in their raised retracted position so that theywillnothamperproperloading of paper When the StartKey is pressed Manual Feed Paper Take Up Solenoid SL4 is deenergized causing the Paper Take Up Rolls to press the paper stack downward and take up a sheet of paper Paper Stoppers are provided that block the leading edge ofthe paper stack as itis loaded on the Table preventing any portion of the leading edge of the paper from getting inside These Stoppers are unlocked at paper take up allowing paper into the copier Manual Feed Paper Take U p Clutch CL3 controls the turning and stop ofthe Paper Take Up Rolls In Standby Manual Feed PaperTake Up Solenoid SL4 Paper Stoppers At Take Up 1139M089AA M 77 N Start Key o OFF SL OFF Paper Take up Roll DOWN SL ON Paper Take Up Roll Up Paper Take up Solenoid ON Approx Dieser L4 OFF E Approx 0 5 Approx 0 3sec Paper Take up Clutch ON 1 1 i CL3 OFF t Transport Roller Sensor PC54 1st Sheet 2nd
40. e intake port of the Fan prevents dust and dirt from entering the Optical Section of the copier M5 turns only while Main Drive Motor M1 is being energized Filter Original Glass Front of Copier gt R f earo Copier n Original Glass Cooling Fan Motor M5 1149M024AA Control Signal Energized Deenergized WIRING DIAGRAM M5 PWB A PJ 15A 5 H L 21 H M 32 1156SBM1200A ORIGINAL SIZE DETECTING SENSORS The five sensors fixed in the optical section receive the light reflected off the original to determine the size of the original in the Auto Paper and Auto Size mode The image density of the original or OD that can be detected is 0 6 or less 1156SBM1201A 12 1 Identification of Original Size Detecting Sensors Original Size Detecting Board UN2 Original Size Detecting Sensor CD1 PC115 Original Cover Detecting Original Size Detecting Sensor PC111 Sensor CD2 PC119 Original Size Detecting Sensor FD3 PC118 Original Size Detecting Sensor FD2 PC117 Original Size Detecting Size Reset Switch PRISSLEDEDOUI 108 1136M018AA 1156SBM1202A 12 2 Original Size Detecting Operation Each photo receiver of the original size detecting sensors PC 115 to 119 responds to reflected light of a given intensity with reference to the intensity of the light emitted by each LED This allows the Original Size Detecting Board to determine whether or notthere is an original within a s
41. eaning Bias OFF l Approx 0 15sec EP5000 0 5sec Control Signal ON OFF WIRING DIAGRAM Cleaning Bias HV1 L H 3 F M 56 MAIN ERASE LAMP Main Erase Lamp LA2 is turned ON to neutralize any surface potential remaining on the surface ofthe PC Drum after cleaning Main Erase Lamp LA2 Main Erase Lamp Board F ilter 1136M069AA D Main Erase Lamp LA2 consists of ten tungsten filament lamps mounted side by side on a board A filter is installed between LA2 and the PC Drum to protect LA2 from con tamination Start Ke oN y A Lo ae ON Main Drive Motor M1 OFF re 0 3sec Main Erase La p LA2 l Control Signal ON OFF WIRING DIAGRAM LA2 PWB A PJ 12A 3 H L 1 L M 57 PAPER TAKE UP FEED SECTION The copier is equipped with two paper drawers that slide out to the front of the copier The 1stDraweris a fixed paper size type while the 2nd Draweris a universal paper size type Paper Size Detecting Sensors Assy CD Paper Take Up Unit Assy Paper Take Up Rolls Je Drawer Fixed Paper Size Type Paper Size Detecting Switches Assy FD 2nd Drawer Universal Paper Size Type 1149M014AA M 58 1156SBM1801A 18 1 Drawer in Position Detection D When the drawer is slid into the copier Drawer S et Detecting Lever A is pushed in the direction of the arrow which blocks the Drawer S etSensor P C61 P C62 goes LOW Rear
42. eflected off the original and guided through the six Mirrors onto the surface of the PC Drum to form the electrostatic latent image or OY Un cx iod Scanner Reference Position Sen sor PC81 Original Glass Cooling Fan Motor M5 Scanner Lens Scanner Motor M2 Scanner Shaft Mirror Motor M7 4th 5th Mirrors Carriage 10 11 12 13 14 15 16 17 18 M 24 1156M012AA 4th Mirror 5th Mirror 6th Mirror Lens Motor M6 AE Sensor Board PWB H Exposure Lamp LA1 1st Mirror 2nd Mirror 3rd Mirror 2nd 3rd Mirrors Carriage 1156SBM1101A 11 1 Exposure Lamp LA1 An AC halogen lamp is used as Exposure Lamp LA1 As the exposure level is adjusted on the control panel the duty ratio of the pulse of AVR Remote from PWB A changes to increase or decrease the LA1 voltage thereby chang ing the image density In Photo mode the voltages are varied on a level 3V 200V Areas 6V lower than the manual Exposure Lamp voltages Manual EXP Setting 5 Reference Lamp Voltage Manual Level Difference V Priority Reference Reference Start Key Es l Image Leading Edge Image Leading Edge BASE Signal l l l i SCEND Signal Exposure Lamp LA1 ON i B 2 OFF 2nd Copy i t Varies depending Approx 0 25sec on the drawer Control Signal WIRING DIAGRAM AVR Remote PWB A PJ8A 13 45 H Signal P WB M 25 1156SBM1102A
43. ens on the 4th Mirror end It limits the amount of light striking the surface of the PC Drum Lens Reference Position Sensor P C90 Lens Base Bracket Lens Lens Aperture Cover Lens Drive Cable 1156M014AB Lens Aperture Cover 1136M013AA Control Signal Energized Deenergized WIRING DIAGRAM M6 PWB F L H 19 A Control Signal Blocked Unblocked WIRING DIAGRAM PC90 PWB F L H 18 D M 30 1156SBM1107A 11 7 4th 5th Mirrors Carriage Movement The 4th 5th Mirrors Carriage is moved to vary the conjugate distance for a particular zoom ratio by driving the rack and pinion gears atthe front and rear ends of the mirror using Mirror Motor M7 stepping motor Mirror Reference Position Sensor PC86 is used to control the position of the 4th Mirror It ensures that the Mirror is located atthe home position when the copier is turned ON Pinion Gear T Rack Gear 4th 5th Mirrors Carriage Mirror Motor M7 4th 5th Mirrors Guide P late Mirror R eference Position Sensor PC86 1136M017AA Control Signal Energized Deenergized WIRING DIAGRAM M7 PWB F L H 19 B Control Signal Blocked Unblocked WIRING DIAGRAM PC86 PWB F L H 18 C M 31 1156SBM1108A 11 8 Original Glass Cooling Fan Optical Section Cooling Fan Motor M5 draws outside air into the copier and blows it against the Original Glass which is heated by lit Exposure Lamp LA1 The Filter at th
44. er Toner Supply Roller Toner Bottle Home Position Sen sor PC35 Toner Bottle Home Position De tecting P late Main Hopper Toner Replenishing Motor M8 10 11 12 13 14 15 M 37 1156M015AA Sub Hopper Toner E mpty Detect ing Lever Sub Hopper Toner Agitating Lever ATDC Sensor UN3 Developer Conveying Agitating Screw Bucket Roller Magnet Sheet Sleeve Magnet Roller 1156SBM1301A 13 1 Developing Unit Drive Mechanism D Drive is transmitted from the copier to the Developing Unitby Coupling Gears 1 and 2 when they mesh D Coupling Gear 2 is spring loaded If the protruding part of Coupling Gear 1 makes contact with that of Coupling Gear 2 when the Developing Unitis slid into the copier spring loaded Coupling Gear 2 is pushed back toward the rear of the copier allow ing the Developing Unitto be slid into position When drive is later transmitted to the Developing Unit Coupling Gar 2 is pushed to the front by the tension of the spring to mesh positively with Coupling Gear 1 Front Coupling Gear 2 1134M009AA M 38 1156SBM1302A 13 2 Magnet Roller The MagnetRoller of the Sleeve MagnetR oller of this copier has the following magnetic characteristics Pole S3 before poles N1 and N2 at which development takes place provides a very weak magnetic force If developer is compacted and clogs atthe Doctor Blade and as a result partofthe surface ofthe Sleeve MagnetR ol
45. ere ve ene En re e ied G 7 1156SBG000BA MECHANICAL ELECTRICAL 1 CROSS SECTIONAL VIEW en M 1 22 COPY PROCESS oU dae A Gan dues M 2 3e DRIVES YST EM eee det e de YA dl M 4 4 SEQUENTIAL EXPLANATION sss M 5 5 WATCHDOG CPU OVERRUN MONITOR FUNCTION M 8 5 1 Configuration neee M 8 5 2 Watchdog Function Post Processing sn M 9 6 MALFUNCTION BYPASS FUNCTION FY YY uu M 10 7 IMAGE STABILIZATION SYSTEM YY AR AG M 11 JY ADC Sensor rk prr ER UNA RERO e ace M 12 7 2 Image Stabilization Control Processing Timing M 13 7 3 Details of Image Stabilization Controls M 14 8 PG DRUM nu cassette ES Mg FF DIN MR e etes M 16 9 DRUM CHARGING co ooo aen n I ie ied ye EH M 17 9 1 OZONE BILE Ks nui a ENEN M 18 10 IMAGE ERASE LAMP nen M 19 LL OPTICAL SECTION zon oaeen dua ce bee de As cn M 24 TL Exposure KAMP eters nt tees eb zen M 25 11 2 AE Sensor viii ota cen iY rn an cea de en Ee da ea M 26 11 3 Lamp Reflectors eee M 27 11 4 Aperture Plates oade M 27 11 5 Scanner and 2nd 3rd Mirror Carriage Movement M 28 CONTENTS 11 6 Lens Movement cece eee eect eee M 30 11 7 4th 5th Mirrors Carriage Movement sssese M 31 11 8 Original Glass Cooling Fan 0 0 c a M 32 12 ORIGINAL SIZE DETECTING SYSTEM nn M 33 12 1 Identification of Original Size Detecting Sensors M 33 12 2 Original Size Detecting Operati
46. et distance SS Original Original Glass Set Distance Photo Receiver 1136M020AA M 33 1156SBM1203A 12 3 Sensor Locations D The number and location of the Original Size Detecting Sensors vary depending on the marketing area as shown below f Standard F Optional Sensors CD1 CD2 FD1 FD2 FD3 Areas PC115 PC 119 PC 116 PC 117 PC 118 Metric Areas f F f f F Inch Areas f F F f F Hong Kong Area f f f f f NOTE If the optional sensors are installed set umper Connector J P2 on UN2 as illustrated below and run the F7 operation FD1 FD2 FD3 Length Inch C Letter L 11 17 Width Inch Width Metric A5L Invoice B5L i Legal ARL Letter L BAL B5C Letter C Yn 1l 17 A3L A4C CD2 CD1 i AL B4L BL E Lengthwise C Crosswise Snoen B5C A4C B5L A5L Original Size Detecting Board UN2 Length Metric Yg LED1 LED2 DT So FD1 is mounted Position of i o ojo DZandFD D2 and FD are mounted are not mounted B B Position of JP2 1136M022CA M 34 1156SBM1204A 12 4 Size Detection D Original Size Detecting Board UN2 reads the output data provided by the original size detecting sensors P C115 to 119 By comparing the data from each sensor with the threshold level it determines whether there is an original placed on the Original Glass UN2 then d
47. etermines the size ofthe original according to the combination ofthe data Metric Area FD1 FD2 FD3 CD1 CD2 Original Size Determined LED LED LED LED LED LED LED LED Size by UN2 2 1 2 1 2 1 2 1 MR A3L A31 EE B4L BAL BAL f f f f f f F F f F F A4L A4L A4L f f f F F FK F F F IFF A5L A5L A5L f F F F F IF F F F F F A4C AAC A4C f F F IF F F F f ff f Rip ye tetrtttenern f f F FEF F F FE u 17 11 17 A3L f f f f f f F f f F f ane j Legal A4L f f f f F lf F l F F FIF FLS 812 13 FLS A4L f f f f F I F F F F F F Letter C 11 8 1 2 Letter C A4C f F F VIEREN EEK f F No Original No Original F F F F F F F F F F F Inch Area FD1 FD2 FD3 CD1 Original Size Determined Size by UN2 LED2 LED1 LED2 LED1 LED2 LED1 LED2 u 17 11 aur 17 f f f f ff fif f f Vos jar Legal Legal Eu f If SEEN F F Ripe ue LeterL Leter f f F FE FE F F en Letter C Letterc f f F F FiF FtF f f FLS 812 13 FLS Legal f f f f f f F f F F MR Invoice No Original f F F F FF F F F F No Original No Original F F F F F F F F F F f Original Present F Original Not Present f no optional sensors are mounted data is processed as indicated in and the original sizes determined by UN2 are as indicated in
48. ge is applied to the Sleeve Roller to preventa foggy background on the copy The amountoftoner attracted onto the surface ofthe PC Drum depends on how much lower the PC Drum surface potential Vi is than Vb i e the potential difference DWhen the potential difference is large a greater amount of toner is attracted DWhen the potential difference is small a smaller amount of toner is attracted Because the Magnet Roller of this copier is movable a flat spring is used as the Bias Terminal which follows the movement of the Magnet Roller DS Collar Bias Connector Sleeve Magnet Roller Front Bias Terminal 1134M018AA ON Start Key OFF l z ON PC Drive Motor M1 OFF l ON OFF Le Ls p Approx 0 15 sec j EP5000 0 5sec Varies depending on Developing Bias the drawer Control Signal ON OFF WIRING DIAGRAM Developing Bias PWB A PJ 13A 3 L H 3 F M 40 1156SBM1304A 13 4 Doctor Blade The Doctor Blade installed over the Sleeve Magnet Roller regulates the height of the developer brush on the surface of the Sleeve Roller The Blade is perpendicular to the direction of movement of the Magnet Roller to minimize variations in the distance between the Doctor Blade and Magnet Roller as the Magnet Roller moves Doctor Blade Direction ofMagnet Roller Movement Magnet Roller 1156M017AA M 41 1156SBM1305A 13 5 ATDC Sensor The copier compares the toner to carrier
49. h atiming beltand geartrain Suction Belt Suction Belt Drive Roller Suction Drive Gear Timing Belt Main Drive Motor Gear 1136M072AA Controlled Part Control Signal ON OFF WIRING DIAGRAM M1 PWB A PJ18A 9 L H 2 M M 87 1156SBM2300A FUSING UNIT The Upper Fusing Roller and Lower Fusing Roller together apply heat and pressure to the toner and paper to permanently fix the developed image to the paper Drive for the Upper Fusing Roller is transmitted from the Main Drive Motor to the Upper Fusing Roller Drive Gear The Lower Fusing Roller and Cleaning Roller are driven by the respective Rollers in contact with them Upper Fusing Paper Cleaning Roller Separator Finger Thermistor TH1 2 Fusing Thermoswitch TS1 1st Paper Exit Roller Fusing Heater Lamp H1 Upper Fusing Roller Pressure Sprin pring Lower Fusing Roller Lower Fusing Paper Separator Finger 1156M020AA Cleaning Roller Upper Fusing Roller Cleaning Roller Drive Gear Lower Fusing Roller Upper Fusing Roller Drive Gear 1136M073AA M 88 1156SBM2301A 23 1 Fusing Temperature Control The Upper Fusing Roller is heated by Fusing Heater Lamp H1 which is an AC halogen lamp Fusing Thermistor 1 TH1 and Thermistor 2 TH2 installed on the Upper Fusing Roller helps keep the optimum fusing temperature The fusing temperature is normally controlled at200 C during a copy cycle and at190 C in the standby state T
50. he PC Drum by the Lever which is operated by Separator Solenoid SL1 Separator Solenoid SL1 PC Drum Paper Separa tor Finger Shaft Swash Plate Cam PC Drum Paper Separator Finger 1136M064AA M 50 lt P aper Separator Finger Front to Back Moving Mechanism The Paper Separator Fingers are also moved over a given distance to the front and rear sothatthey will contactwider areas ofthe surface ofthe P C Drum thus preventing local ized damage to the PC Drum surface DThe Swash Cam mounted on the Pivot Pin of the Finger Operating Lever is moved through steps by means of the Ratchet wheel and SL1 causing the Swash Cam to push the Finger S haft DThe lateral movement ofthe P aper Separator Fingers is 3 5 mm which is equivalent to 60 times energization of SL1 SL 1 Energized Pawl A is raised te The Swash Plate G7 in position by Pawl B 1136M065AA SL 1 Deenergized Ratchet Wheel Swash Cam e 1136M066AA 1136M067AA Pawl A pushes the Swash Cam Paper Separator Finger S haft downward to turn it one notch M 51 ON UTE Synchronizing Roller Clutch CL Approx 170msec EP5000 145msec Separator Solenoid SL1 a Approx 0 15 sec 1151T13MCD Control Signal Energized Deenergized WIRING DIAGRAM SL1 PWB A PJ 11A 6A L H 2 l M 52 1156SBM1600A EU CLEANING UNIT The Cleaning Blade is pressed tightly against the surface of the PC Drum and scrapes off a
51. ion controls in the normal mode and the value in the normal mode 90V in the P hoto mode by the Constant Voltage Circuitin High Voltage Unit HV1 The Corona Unithas a Comb Electrode which minimizes the amount of ozone produced The conventional wire type corona unit produces a large amountofozone due to corona discharge in radial directions The comb electrode type on the other hand discharges only toward the Grid Mesh meaning a reduced amount of ozone is produced The Comb Electrode can be cleaned by the user who pulls out to the front the shaft on which a Cleaning Rollar is mounted Holder Comb Electrode Spring Holder 1139M030AA Grid Mesh Start Key Bu Paper leading Edge Detecting C Drum Cha ge Corona a O J0 7s st Drawer Appr x 0 6sec ec 2nd Drawer Approx 1 2sec Control Signal WIRING DIAGRAM PC Drum PWB A PJ 13A 2 3 F Charge Corona Control Signal Normal Photo Mode WIRING DIAGRAM Grid Voltage PWB A PJ 13A 1 Pulse output 3 F VG M 17 1156SBM0901A 9 1 Ozone Filter D Ozone produced by the PC Drum Charge Corona is absorbed by the Ozone Filter lo cated to the left of the PC Drum Charge Corona as the air is drawn out of the copier by Ventilation Fan Motor M3 Ventilation Fan Motor M3 Ozone Filter PC Drum Charge Corona 1134M004AA Control Signal ON OFF WIRING DIAGRAM M3 PJ 34A 1 H L 11 F M 18 1156SBM1000A IMAGE
52. ion to the underside of the paper thereby attracting the positively charged toner onto the surface of the paper to form a visible developed image of the original The Corona Unit is provided with a Corona Wire cleaning mechanism the operator has only to pull out the Lever on which the Cleaner is mounted from the front of the copier which cleans the Wire Paper Separation The Paper Separator Corona showers the underside ofthe paper with both positive and negative charges so that the paper can be easily separated from the PC Drum In addition two Paper Separator Fingers physically peel the paper off the surface of the PC Drum For details see PAPER SEPARATOR FINGERS The Image Transfer Paper Separator Coronas Unit is provided with a Pre Image Transfer Guide Plate that determines the angle at which the paper comes into contact with the PC Drum and keeps an optimum distance between the paperand the PC Drum so that the image may be properly transferred onto the paper The Image Transfer P aper Separator Coronas Unitis grounded via a high capacity resis tor which improves its efficiency to discharge to the PC Drum side thus reducing the output current from High Voltage Unit HV1 PC Drum Image Transfer Corona Wire Pre Image Transfer Guide Plate Guide Paper Separator Corona Wire Corona Housing Image Transfer P aper Sep arator Coronas Unit Rail isitor Reisito Image Transfer Corona Wire Cleaner 1136M0
53. itions Scanner Motor M2 requires a large amount of current The Current 1 or 2 signal from P WB F is selected accordingly to vary the amount of current supplied to M2 The Current signal selection timing is controlled by software L M1 M2 Current 1 H L H Current 2 H H L Current M2 gt M1 gt L When the scan Atscan startand dur At return start and Operation speed reaches a ing return decelera during return motion given level and dur ing scan deceleration tion M2 is used at scan Start of a small zoom ratio On receiving the Scan signal Motor Drive Board PWB F applies motor drive pulses which are out of phase with each other to M4 The motor speed is varied by changing the width of the pulses applied to M2 Control Signal Energized Deenergized WIRING DIAGRAM M2 Scan Signal PWB F H M2 Current Switching Signal 1 M2 Current Switching Signal 2 Blocked Control Signal Unblocked WIRING DIAGRAM PC81 PWB F L M 29 H 18 E 1156SBM1106A 11 6 Lens Movement The Lens is moved by the Lens Drive Cable which is driven by Lens Motor M6 stepping motor The motor drive pulses sent from PWB F drive M5 to move the Lens a given distance corresponding to the zoom ratio from the reference position determined by Lens Reference Position Sensor PC90 There is a fixed type Lens Aperture Cover provided at the rear of the L
54. ked Then the Lift Up Motor is energized again to raise the paper stack until the Lift Up Sensor is blocked again This means thata constantpressure is maintained between the paper and the Paper Take Up Roll regardless of the amount of paper still available for use 1 The Lift Up Motor is energized at the following timings in addition to the press ofthe Paper Descent Key UN5 6 D Turning ON the Power S witch D Opening and closing the door D Operating the panel D Detecting a sheet of paper on the Multi Bypass Table DDetecting an original in the Duplexing Document Feeder D Raising and lowering the Original Cover etc Paper Lifting Arm Worm Gear 1st 2nd Drawer Paper Lift Up Motor M13 14 1st 2nd Drawer Paper Descent Key UN5 6 1134M032EA M 62 D Paper lifting timings are as follows When Drawer is Slid in 1st 2nd Drawer Lift Up Sensor PC65 66 1st 2nd Drawer Paper ON Descent Key UN5 6 OFF 1st 2nd Drawer Lift up Sensor PC65 66 1st 2nd Drawer Lift up ON Motor M13 14 UP OFF 1136T63MCA During Copying 1st 2nd Drawer Lift up Sensor PC65 66 4425M006AA 1st 2nd Drawer Lift up ON Motor M13 14 UP OFF 1136T64MCA 4425M005AA Control Signal OFF ON WIRING DIAGRAM UN5 PWB A PJ 244 3 i H 41 l UN6 PWB A PJ 24A 4 L H 41 M Control Signal Energized Deenergized WIRING DIAGRAM M13 PWB A PJ 18A 5 LE H 25 M 41 K M14 PWB A PJ 18A 7 L H 25 M
55. ler is not covered with developer the nearby developer around S3 goes to those uncovered areas because of the weak magnetic force This helps prevent white lines from occuring on the copy The magnetic flux density is maximized to allow the bristle to stand high and uprightat poles N1 and N2 at which development takes place The positioning of these two like poles together helps agitate the developer for greater uniformity thus preventing white lines from occurring on the copy The Sleeve Roller onto which developer is attracted by the magnetic fields of force set up by the poles of the Magnet Roller turns to convey the developer toward the point of development This means that developer fresh from the Developer Mixing Chamber is always brought to the point of development The Imaging Unit integrates the Developing Unit with the PC Drum into one body Because of that it is impossible to move the Developing Unit againstthe PC Drum thereby providing a certain distance between the PC Drum and Sleeve Magnet Roller The Magnet Roller has therefore been made movable the Bushing is pressed by compression springs thereby pressing the Positioning Collars on both ends of the Magnet Roller against the PC Drum This ensures a given distance between the PC Drum and the Sleeve Magnet Roller Compression Spring Fixed Bushing PC Drum 1156M016AA M 39 1156SBM1303A 13 3 Developing Bias A negative voltage Vb Developing Bias volta
56. mum Exposure Lamp Power Switch is when the copier is cool voltage through AIDC turned ON immediately after the Power Sensor control Switch is turned ON Correction for Image density To compensate for image Corrects the grid voltage and Faulty AIDC gradation density and gradation optimum E xposure Lamp Sensor aggravated by a faulty AIDC voltage according to the time Sensor through which the PC Drum has turned and the copier has run z The following is the block diagram of the image stabilization system Exposure Lamp LA1 Original Width Scale Original Glass Halftone P atch Image Erase Lamp LA3 1136M003AA 1149SBM0701A 7 1 AIDC Sensor To provide image stabilization control this copier has AIDC Sensor PWB G fitted to the Cleaning Unit of the Imaging Unit The sensor is used to detect the toner density and background level on the PC Drum Operation 1 The PWB G LED projects approx 950 nm infrared light onto the surface of the PC Drum 2 The PWB G phototransistor detects the amount of light reflected back 3 The phototransistor outputs a voltage corresponding to the intensity of the light reflected back LED Power GND Supply Output PC Drum AIDC Sensor Image Transfer P aper Separation Coronas 1149M005AA Toner Density on PC Drum Light reflected Output Voltage High Small High Low Large Low M 12 1156SBM0702A 7 2 Image Sta
57. ng Heater H3 Optional is installed on the base frame of the copier under the 2nd Drawer Drum Dehumidifying Heater H2 Standard is located under the Lower Synchronizing Roller to prevent the PC Drum from forming condensation Lower Synchronizing Roller yd Paper Dehumidifying Heater H2 Drum Dehumidifying Heater H3 Stan dard JI 1136M004AA Paper Dehumidifying Switch S12 Drum Dehumidifying Switch S3 Copier Base Frame e H2 H3 ON OFF Conditions Dehumidifying Switch ON Power cord Plugged in Power Switch ON During a copy cycle ON OFF OFF ON ON OFF During a copy cycle Refers to the period of time between when the Start Key is pressed and when Main Drive Motor M1 is deenergized M 96 1156SBM2600A PI MEMORY BACKUP IC1 RAM of RAM Board PWB R connected to Main Control Board PWB A stores the setting adjustment values set in the Tech Rep Modes as well as the counter counts Backup Battery BAT1 is mounted on PWB R to prevent the contents of memory from being lostwhen the power cord is unplugged orP WB R removed from the copier BAT1 requires a voltage of 2V or more to retain the contents of memory Important As we noted above the RAM stores critical data If P WB R has been replaced with a new one memory must first be cleared and then all settings be made again It should also be noted that PWB R should not be replaced at the same time when PWB A is re
58. not exceeded F Use a power source with little voltage fluctuation F Never connect by means of a multiple socket any other appliances or machines to the outlet being used for the copier F Make the following checks at frequent intervals DIs the power plug abnormally hot DAre there any cracks or scrapes in the cord D Has the power plug been inserted fully into the outlet D Does something including the copier itself ride on the power cord F Ensure thatthe copier does not ride on the power cord or communications cable of other electrical equipment and that itdoes notbecome wedged into or under neath the mechanism Grounding To preventreceiving electrical shocks in the case ofelectricalleakage always ground the copier F Connectthe grounding wire to D The ground terminal of the outlet DA grounding contact which complies with the local electrical standards F Neverconnectthe grounding wire to a gas pipe the grounding wire fora telephone or a water pipe G 4 11495BG0300A PRECAUTIONSFORUSE To ensure that the copier is used in an optimum condition observe the following pre cautions F Never place a heavy object on the copier or subjectthe copier to shocks F Insertthe power plug all the way into the outlet F Do notattemptto remove any panel or cover which is secured while the copier is making copies F Do notturn OFF the Power Switch while the copier is making copies F Provide good ventilation when m
59. nsole with Stationary P laten Organic P hotoconductor Electrostatic Dry Powdered Image Transfer to Plain Paper 3 Way Feeding lstDrawer Fixed Paper Size Tray 500 sheets of paper USA Area 550 sheets of paper 2nd Drawer Universal Tray 500 sheets of paper USA Area 550 sheets of paper Multi Bypass Table 50 sheets of paper Mirror S canning Slit Exposure New Micro Toning System Comb Electrode DC Negative Corona with Scorotron System Visible Image Transfer by means of a Single Wire DC Negative Corona with Corotron System Single Wire AC Corona with Corotron S ystem plus Paper Separator Finger Heat Roller Charge Neutralizing Brush Metric A3L Inch 11 17 L L Lengthwise 2nd Drawer Automatic feeding 1st Drawer Automatic feeding Multi Bypass Table Plain paper 60 to 90 g m2 f f Translucent paper Transparencies Thick paper 91 to 157 g m Recycled paper Maximum Width Length 297 432mm 297 432mm 297 432mm Minimum Width Length f Permissible 140 182mm 140 182mm 100t 140mm Not permissible G 1 MULTIPLE COPIES 1to 999 WARMING UP TIME 240 sec or less with room temperature of 20 C and rated power voltage FIRST COPY TIME A4C or 8 1 2 11 C 3 7 sec or less in Full size Mode using 1st Drawer CONTINUOUS COPY SPEED copies min Fed from 1st Drawer EP5000 Zoom Ratio Zoom Ratio Size t 11
60. ny toner remaining on the surface after image transfer and paper separation have been completed PC Unit Cleaning Blade Blade Tension Spring Toner Conveying Coll PC Drum Paper Separator Finger 1134M027AA The Cleaning Blade is moved back and forth to prevent the PC Drum from deteriorating and the Cleaning Blade from warping away from the surface of the PC Drum Eccentric Cam Timing Belt Blade Moving Pin Back knn Front Cleaning Blade Assy Mounting Bracket To Main Drive Motor M1 1134M028AA M 53 1156SBM1601A 16 1 Spent Toner Collection 1 Toner Conveying Collecting Mechanism D The toner which has been scraped off the surface of the PC Drum by the Cleaning Blade is conveyed by the Toner Conveying Coil towards the rear of the copier and falls into the Toner Collecting Box at the back of the copier through the pipe D The Toner AntispillM ylaris affixed under the Cleaning Blade to receive toner thus pre venting any toner from failing down onto the surface of the copy paper or the paper path Cleaning Blade Residual Toner Toner Conveying Coil Toner Antispill Mylar 1136M061AA Toner Conveying Coil Toner Conveying Coil Drive Gear Copier Toner Conveying Coil Drive Gear PC Unit Pipe 1136M062AA D The type of Toner Collecting Box and the method of detecting an installed box differ between the applicable marketing areas See the following ta
61. o ensure good fusing performance even when the Lower Fusing Roller remains cool immediately after warm up in the early morning the temperature is controlled as follows when the copier is turned ON D Temperature is controlled at 200 C for one hour after the copier has completed warming up which is followed by a temperature control at 190 C Ifa copy cycle is started while the temperature is being controlled at190 C the tempera ture control at 200 C begins As soon as the copy cycle is completed control is again switched to 190 C TH1is positioned ata point 30 5 mm from the paper path reference position there by preventing offset caused by low temperature and degraded fusing performance for small size paper The control temperature in the Energy Saving Mode is 155 C With EP5000 the control temperature is 180 C in the Energy Saving Mode Fusing Thermoswitch TS1 installed above the Upper Fusing Roller cuts off the power to the Fusing Unit if the temperature of the Upper Fusing Roller becomes excessively high It eliminates the possibility of a fire that could occur when H1 remains ON due to a faulty temperature control circuit EP5000 Energy Saving Mode 1 hour after Power Switch ON During Copy Cycle Saving Mode During Predrive NO YAMS JAMO d peigeug buiAdo gt peues P Ado pea9kiduuo5 o p 5 Ado pojaeu g 6uikdo 1151M012CA NO epow unes A61ougy 440 epoiy unes Aug M 89 lt Fusing Tem
62. on sn M 33 12 3 Sensor Locations dd M 34 12 4 Size Detection YA RR FF ud M 35 12 5 Original Size Detection Timing VYFF YY M 36 I13 DEVEEOPMENT zoons ooi dedit t e Ree He cent on M 37 13 1 Developing Unit Drive Mechanism M 38 13 2 Magnet Roller m nn M 39 13 3 Developing Bias ee M 40 13 4 DoctorBlad Y YY I A ARF FFE EF uu M 41 13 5 ATDC Sensor a ee Ie WR dateen A een AR EAR M 42 13 6 Sub Hopper Toner Replenishing Mechanism M 44 13 7 Sub Hopper Toner Empty Detection Control M 45 13 8 Main Hopper Toner Replenishing Mechanism M 46 13 9 Swing Out In the Main Hopper nnn M 47 14 IMAGE TRANSFER AND PAPER SEPARATION M 48 14 1 Ozone Filter ee M 49 15 PAPER SEPARATOR FINGERS Y RR AG M 50 16 CLEANING UNIT cct ox ER Ee So V E Rs M 53 16 1 Spent Toner Collection RR M 54 16 2 Cleaning Bias Optional none M 56 17 MAIN ERASE LAMP eeen M 57 18 PAPER TAKE UP FEED SECTION en M 58 18 1 Drawer in Position Detection nnn M 59 18 2 Drawer Paper Lifting Lowering Mechanism Control M 60 18 3 Paper Level Detection YF FF eee M 65 18 4 Paper Empty Detection FR uu M 66 18 5 Universal Tray 2nd Drawer Paper Size Detection M 68 18 6 Paper Take Up Mechanism ssesssseees M 71 18 7 Paper Take Up Control Y RF FFF
63. paper which is shown on the Touch Panel as a graphic marker in units of 50 sheets of paper DAs the paper is consumed and the top level of the paper stack lowers the Lift Up Motoris energized to raise the paper stack During this time the Lift Up MotorP ulse Sensor PC67 68 detects pulses and that pulse count is accumulated When the count reaches 50 sheets of paper one segmentof the paper level indicator on the Touch Panel goes out 1st 2nd Drawer Lift Up Motor M13 14 P aper Level Indicator 500 D 1 to 50 sheets m B m ES kx 2 a oo gt gt 1st 2nd Drawer Lift Up D50to200sheets MM Motor Pulse Sensor o PC67 68 1134M059AA Im n o D 200 to 350 sheets o 1134M060AA 500 ie 1134M061AA D350 to 500 sheets ERES d D 500 sheets up Nu 1134M020AA fii O 1134M062AA Control Signal Blocked Unblocked WIRING DIAGRAM PWB A PJ 23A 2 L H 32 1 41 K PWB A PJ 23A 5 L H 32 J 41 N M 65 1156SBM1804 18 4 Paper Empty Detection 1 Metric Areas DA paper empty condition in the 1stand 2nd Drawers is detected by Ist Drawer Pa per Empty Sensor PC101 and 2nd Drawer P aper Empty Sensor PC 102 respec tively installed in the paper take up area of each drawer D When the drawer with no paper loaded in it is roughly slid out of the copier the Paper Empty Lever can hitagainstthe P aper Lifting Plate To preventthis from oc curring the Pa
64. per Empty Lever is tilted in the direction of sliding Paper Lifting Plate Paper Empty Lever ge N X Q 1st 2nd Drawer Paper Empty 4425M007AA Sensor PC101 102 PC101 102 blocked Paper Present A The paper stack raises the Paper E mpty Lever which Am blocks PC101 102 goes LOW 4425M008AA PC101 102 unblocked Paper not Present The light blocking plate of the Empty Lever clears in PC101 102 which goes HIGH 3 9 4425M009AA Control Signal Blocked Unblocked WIRING DIAGRAM PC101 PWB A PJ23A 9 L H 32 J PC102 PWB A PJ 23A 12 L H 32 K M 66 2 Inch Areas DA paper empty condition in the 1stand 2nd Drawers is detected by 1st Drawer Pa per Empty Board PWB E1 and 2nd Drawer Paper Empty Board PWB E2 respec tively installed on the underside of the Paper Lifiting P late D The board is provided with a reflector type photosensor When the drawer is loaded with paper the photosensor is activated by the light reflected off the paper The copier then detects that there is paper in the drawer D If no paper is loaded the copier detects that the drawer is paper empty and atthe same time the Lift Up Motor M13 14 starts turning backward to lower the Paper Lifting Plate D When a paper empty condition is detected during a multi copy cycle and if there is another paper source including options loaded with paper of the same size and in the same direction the copier
65. perature Control During Continuous Small Size Paper Feeding gt When a number of sheets of small size paper are fed through the copier continuously the temperature of the rear end of the Fusing Rollers tends to rise resulting in a high temperature offset occurring Fusing Thermistor TH2 is installed at a location 271 5 mm from the position of paper passage registration As soon as TH2 detects 225 C the 225 C control by TH2 is started 1156SBM2302A 23 2 Fusing Rollers Pressure Mechanism Pressure springs are fitted to the Pressure Holder for the Lower Fusing Roller on the front and rear ends When the pressure screws are tightened it moves the Pressure Holder upward thus allowing the Lower Fusing Roller to be pressed tightly up against the Upper Fusing Roller Upper Fusing Roller Rear Front Pressure Screw Lower Fusing Roller Pressure Holder Pressure Spring 1136M075AA M 90 1156SBM2303A 23 3 Oil Roller Cleaning Roller The Cleaning Roller is pressed up against the Upper Fusing Roller applying a coat of silicone oil to the surface of the roller At the same time it turns in the direction opposite that of the Upper Fusing Roller and with its brush removes toner and paper dust Cleaning Roller Upper Fusing Roller Lower Fusing Roller 1136M077AA M 91 1156SBM2304A 23 4 Paper Separator Fingers e Each of the two Fusing Rollers is provided with Paper Separa
66. placed M 97 1156SBG000E MINOLTA Copyright 1997 MINOLTA Co Ltd Printed in Japan Use of this manual should be strictly supervised to avoid disclosure of confidential information 1156 7991 11 97046000 Printed in Japan MINOLTA Co Ltd
67. pper Toner Replenishing Motor M9 is energized for the toner replenishing time which is calculated based on the ATDC Sensor output voltage T C ratio and the size of the paper being fed through the copier Sub Hopper Toner Supply Roller Sub Hopper Toner Replenishing Motor M9 Bucket Roller Sub Hopper Developer Conveying Sleeve Magnet Agitating Screw Roller Rear of Copier Frontof Copier 1134M014AA Controlled Part Control Signal ON OFF WIRING DIAGRAM M9 PJ 11A 2A L H 2 H M 44 11565BM1307A 13 7 Sub Hopper Toner Empty Detection Control DA toner empty condition in the Sub Hopper is detected by the magnet fitted to the Sub Hopper Toner Empty Detecting Lever and Sub Hopper Toner Empty S witch S106 DThe Sub Hopper Toner Empty Detecting Lever rides on the eccentric cam fitted to the rear of the Sub Hopper Toner Agitating Lever Itis moved up and down as the eccentric cam is turned by the drive transmitted from Main Drive Motor M1 D While the amountoftoner in the Sub Hopper is higher than the predetermined level the Sub Hopper Toner E mpty Detecting Lever rests on the toner and does notmake the up and down motion S106 therefore remains deactuated D When the amountoftoner in the Sub Hopperis lower than the predetermined level the Sub Hopper Toner E mpty Detecting Lever moves up and down by the eccentric cam This result in S106 being actuated and deactuated When the time S106 is ac
68. r than the reference by 296 or more interrupts the copy cycle and performs a toner replenishing sequence and as soon as there is a gain of 196 againstthe T C reading resumes the copy cycle This function is however dis abled when a toner empty condition is detected and the AT DC S ensor is found faulty Toner Replenishing Control by AIDC Sensor This copieris equipped with a function thatswitches from the ATDC Sensor ifitbecomes defective to the AIDC Sensor to continue providing the toner replenishing control A pattern is produced on the surface of the PC Drum for each copy between two successive copies or after ithas been fed out The AIDC Sensor reads that pattern to detect the amount of toner sticking to it and the copier performs either of the following toner replenishing sequences depending on the output voltage of the AIDC Sensor Controlled target T C 6 AIDC Sensor output voltage DC4 25V Toner Replenishing Mode AIDC Sensor Output Volt Amount Replenished age Large amount replenishing Less than DC3 25V Approx 129 mg Small amount replenishing DC3 25V to less than 4 25V Approx 64 mg Fixed amount replenishing DC4 25V to less than 5 25V Approx 13 mg No toner replenishing DC5 25V or more The amount of toner replenished varies according to the paper size given in the table are figures for A4 M 43 1156SBM1306A 13 6 Sub Hopper Toner Replenishing Mechanism Sub Ho
69. ratio T C of the developer in the Developer Mixing Chamber detected by ATDC Sensor UN3 during a copy cycle with the reference ratio 6 and if itfinds a lower ratio than the reference replenishes the supply of toner The standard output voltage ofthe ATDC Sensor forthe reference T C 696 is 2 5V If the toner to carrier ratio becomes lower than 2 596 in a toner empty condition the copier inhibits the initiation of a new copy cycle this feature can be enabled or disabled by a Tech Rep Choice mode As soon as a ratio of 3 or more is recovered the copier permits the initiation of a new copy cycle If the Front Door is swung open and closed with a T C ratio of less than 3 the copier initiates an Auxiliary Toner Replenishing sequence The toner empty condition is canceled as soon as a T C ratio of 3 596 is reached and the copier completes the Auxiliary Toner R eplenishing sequence when the target level is reached ATDC Sensor Automatic Adjustment An automatic adjustment of the ATDC Sensor is made in the F8 or FF Test Mode operation When F8 or FF is Run after Starter Has Been Changed Following the execution of the starter setup mode upon pressing the Start Key the copier CPU reads the output value of the ATDC Sensor and adjusts the ATDC Sensor gain so that the output value becomes 2 5V NOTE IfanF8 orFF operation is run ata time when the starter has notbeen changed itcan resultin a wrong T C reference value being setby the
70. rd until its light blocking plate has passed through and below the Drawer Spring Lower Limit Position Sensor PC70 71 blocking and then unblocking it This is so the worm gearcan reach down low enough to push the Lock Lever downward and unlock the drawer D When the drawer is unlocked the Drawer Spring in the rear of the drawer pushes the drawer out to the front approx 70 mm D Once the drawer is pushed out the drawer Set Sen sor PC 61 62 is unblocked This reverses the Lift up Motor M13 14 and briefly turns the worm gear upward until its light blocking plate reblocks the Lower Limit Position Sensor P C70 71 returning the Lock Lever to the locking position 1134M035ED M 64 1156SBM1803A 18 3 Paper Level Detection D The amount of paper still available for use or the paper level of the 1st and 2nd Drawer is detected by 1st 2nd Drawer Lift Up Motor Pulse Sensor P C67 68 and a pulse disk D The pulse disk is mounted on the shaft of the intermediary gear that transmits drive from the Lift Up Motor M13 14 The speed of the pulse disk varies with different paper levels and the number of pulses detected by the Lift Up Motor Pulse Sensor PC67 68 is used to determine the paper level D Counting of the number of pulses is started when the Lift Up Motor M 13 14 is en ergized and continues until the output from the Lift Up Sensor PC65 66 goes LOW The total number of pulses is translated into the amount of
71. rge numbers for the drive train parts 2nd Paper Exit Roller Drive Qe 5 Suction Unit Drive is SERRE PC Drum Drive CAL S Developing Section Drive 392 SI O T V NU Manual Feed Paper Q hess A Upper Fusing Roller Take Up Clutch SA OAA Drive Gear gt yd S Upper Vertical os Transport Roller a Drive bu EN Toner Conveying Coil Drive on PC Unit Main Drive Motor a Synchronizing Roller Clutch Ge yd Paper Transport Clutch Den A ED a S 8 Lower Vertical Transport Roller Drive 1136M002AA M 4 1156SBM0400A EA SEQUENTIAL EXPLANATION Figure in are the timer values for E P 5000 A The power cord is plugged into the outlet ON DC PowerSupply UnitPU1 outputs DC24V for dehumidifying heating ON M Prum Denumiditying Only when Drum Dehumidifying Heater H3 c ah Paper Dehumidifying Switch 53 and Paper Dehumidi Heater H2 fying Switch 12 are ON B Power Switch S1 is turned ON prm Seer a Um GU eese dem xv ey OFF ON H2 PU1 outputs DC24V and DC 5V ON Power Supply Board PWB C outputs DC 24V DC24V line ON LON Master Board PWB A outputs DC4 7V and DC12V LON Control panel display ON ON Suction Fan Motor M4 turns at half speed Fusing Section Cooling Fan Motor M15 ON Approx 1sec gt Fusing Heater Lamp H1 The Lens is detected at the home position The Mirror is detected a
72. rst needs to swing the Toner Bottle Holder out 40 to the front There is a flatspring installed on the Sub Hopper Holder which causes the Toner Bottle Holderto click out of and into the locked position D The Holder pivots about the Toner Supply Portas itis swung outor in which effec tively prevents tonerfrom spilling when the Holderis swung outorin The Coupling is provided with a locking mechanism that prevents the Toner Bottle from turning when it is removed or installed When the Toner Bottle Holder is in Position DSince the flat spring fits into the front notch of the Toner Bottle Holder the Holder is locked in position Atthis time the bottom ofthe Coupling Lock Lever is pushed in by a part of the Sub Hopper keeping the Coupling free Flat Spring Coupling Lock Lever Front Toner Bottle Holder 1136M089AA Rear When the Toner Bottle Holder is Swung Out D The Toner Bottle Holder pushes the flatspring down and moves over ituntil the flat spring then fits into the rear notch This locks the Toner Bottle Holder in position Atthis time the Coupling Lock Leveris free and the spring acts to lock the Coupling in position with the Lock Lever Coupling Toner Bottle Coupling Lock Lever Flat Spring 1136M035AA M 47 1156SBM1400A IMAGE TRANSFER AND PAPER SEPARATION Image Transfer The Image Transfer Corona applies a DC negative corona emiss
73. s the Technical R epresentative to check if any faulty condition has occurred in the CPU For details see SWITCHES ON PWBs M 9 1156SBM0600A EN MALFUNCTION BYPASS FUNCTION D When a malfunction occurs in the copier the malfunction bypass function permits the copier to continue operating if that malfunction is one of the predefined candidates for an isolated malfunction and if it will not affect the current copying operation But if an isolated malfunction occurs anytime during the actual copy cycle the copier considers it a normal malfunction DIf a copying function involving an isolated malfunction is selected the message Selected mode can tbe used appears on the Touch Panel andthe copier rejects that function D When an isolated malfunction occurs a tiny wrench Y indicator appears in the lower left corner of the Basic Screen Access the Machine Status display by touching the wrench icon or via the Tech Rep mode to ascertain the trouble code Then refer to the Troubleshooting Manual for details D Trouble codes for up to five isolated malfunctions are shown on the Machine Status display When a sixth isolated malfunction occurs the copier considers it a normal malfunction prompting a Tech R ep call The sixth malfunction is shown on the Touch Panel But ifallofthe paper feed ports exceptthe manual feed port show anisolated malfunction the copier considers them a normal malfunction even though the isolate
74. sport Rollers by way of gears meaning that the Vertical Transport Rollers are turned and stopped in time with the Transport Rollers Transport Roller Sensor PC54 immediately after the Transport Rollers detects a sheet of paper fed from the Vertical Transport Section or Manual Bypass Table A Paper Dust Remover is fitted to one ofthe Transport Rollers collecting paper dust from the rollers The Cover for the Vertical Transport Section i e the Side Door can be opened and closed for clearing misfeeds Right Upper Door Interlock Switch S22 detects wheth er or not this Cover is open Right Upper Door In Transport Rollers terlock Switch Transport Roller Sensor PC51 gt Vertical Transport Rollers Rolls 1156M019AA TRON TRON Start Ke on Y OFF CL1 ON OFF Approx 0 4 sec Approx 0 2 sec Paper Leading Edge died pn m Detecting Sensor PC55 1st Copy 2nd Copy 1151T10MCC Control Signal Energized Deenergized WIRING DIAGRAM CL1 PWB A PJ14A 2 L H 7 F Control Signal ON OFF WIRING DIAGRAM S22 PWB A PJ16A 2 L H 21 M 80 1156SBM2100A SYNCHRONIZING ROLLERS e The Upper Synchronizing Roller is a metal roller covered with a polyvinyl chloride tub ing It is secured to the front and rear frames of the copier e The Lower Synchronizing Roller a rubber roller is fitted to the Transport Assy Pivot ing about its rear end the Lower Roller can be swung downward to facilitate clearing p
75. sure Lamp voltage by 1V No T C correction is made even when the grid voltage reaches its upper limit 3 The correction sequence is canceled as regular correction starts M 13 1156SBM0703A 7 3 Details of Image Stabilization Controls AIDC Sensor adjustment Optimum Exposure Lamp voltage Q Grid voltage and T C correction Correction amp AE Sensor gain adiustment D The following is the details of each image stabilization control 1 AIDC Sensor coarse adjustment This adjustment represents a coarse adjustment of the AIDC Sensor when the ordinary control of only the LED current cannot cover part to part variations in the AIDC Sensor installation circuit deterioration etc The surface ofthe PC Drum whose charges have been neutralized is exposed to lightfrom the LED The output currentfrom the AIDC Sensor goes through the load resistance selected by a 4 bit analog switch and the 4 bit analog switch selects the load resistance so that the resultant voltage becomes 1V or less 2 AIDC Sensor fine adjustment If the AIDC Sensor is dirty with toner it results in an error being produced in the sensor output voltage value providing a false reference value The surface of the PC Drum which has been erased is exposed to lightfrom the LED The LED current value is varied through pulse width control so thatthe output voltage from the AIDC Sensor becomes 1V Controlled Part Control Signal ON OFF WIRING DIAGRAM AIDC Sensor PJ 11A
76. t the home position The Scanner makes its initial motion gt The Lens is detected at the full size position The Mirror is detected at the full size position 4 he surface temperature of the Upper Fusing Roller reaches 165 C LON Main Drive Motor M1 and Original Glass Cooling Fan Motor M5 ON start predrive gt Ventilation Fan Motor M3 EA M4 tums at full speed EON Developing Bias P aper Separator Corona Approx 100msec OM Image Erase Lamp LA2 Approx ON pc prum Charge Corona m 200msec ON Image Transfer Corona To onnextpage Main Erase Lamp LA3 M 5 2 i 30sec ifthe Upper F using Roller surface tempera After the lapse of 30sec ture is less than 165 C when S1 is turned ON and 15sec ifthe surface temperature is 165 C orhigh er or 15sec 4 Approx 5msec OF pc Drum Charge Corona Image Transfer Corona Approx 160msec OEE LA2 F Approx 285msec OFF M1 M5 RAS See Fam fms meme Sa SS eee pen Te ey OFF L Approx 150msec Developing Bias Pa 500msec per Separator Corona Ed Approx 4850msec gt M4 turns at half speed 4500msec L M3 The Start Key is pressed The components are energized in order
77. tch 53 Exit Duplex S witching Exit Duplex Plate Solenoid SL5 1st Paper Exit Roller 1136M081AA Main Control Board P WB A outputs a signalto energize E xit Duplex S witching Solenoid SL5 which switches the position ofthe Exit Duplex S witching Plate The Unithas Paper ExitS witch 53 built into it which detects a sheet of paper being fed out ofthe Unit For more details of switching control see the Service Manual for DUPLEXING UNIT Paper Exit Switch 53 Paper Exit Roller R olls Exit Duplex S witching Plate 1139M082AA Exit Duplex Switching Solenoid SL5 Control Signal ON OFF WIRING DIAGRAM 53 PWB A PJ 14A 8 L H 3 D Control Signal Energized Deenergized WIRING DIAGRAM SL5 PWB A PJ 14A 6 E H 3C M 94 1156SBM2401A 24 1 Left Upper Door Interlock Switch S23 e Left Upper Door Interlock Switch S23 fitted to the copier body detects the Left Upper Door when closed The Exit Unit is fitted to the Left Upper Door e When the Left Upper Door is closed the rib on the Exit Unit pushes the Lever which activates S23 Lever PS eft Upper Door Left Upper Door Interlock Switch S23 2nd Paper Exit Roller Drive Gear 1156M023AA Controlled Part Control Signal ON OFF WIRING DIAGRAM S23 PWB A PJ16A 4 L H 21 l M 95 1156SBM2500A DEHUMIDIFYING SWITCH To prevent image transfer efficiency from being reduced due to damp paper in highly humid weather Paper Dehumidifyi
78. tor Fingers that strip the paper from the surface of the Rollers Upper Fusing Paper Separator Fingers e The Upper Fusing Paper Separator Fingers have been coated with teflon so that they will not be contaminated with toner e The tip of each Separator Finger is at all times pressed against the surface ofthe Upper Fusing Roller by a pressure spring Upper Fusing Roller Rear Upper Fusing Paper Separator Finger Front 1136M078AA Lower Fusing Paper Separator Fingers e The Lower Fusing Paper Separator Fingers are flat springs to enhance paper separat ing performance and ensure that the paper would not become wedged if a misfeed oc curs Fusing Lower Guide Lower Fusing Paper Separator Fingers Assy Lower Fusing Paper Separator Finger 1156M021AA Exit Unit M 92 1156SBM2305A 23 5 Fusing Section Cooling Fan Motor Fusing Section Cooling Fan Motor M15 prevents the temperature in the optical section from being raised inordinately by the heat of the Fusing Unit in the standby state M15 remains energized while the copier is in the standby state and deenergized during a copy cycle 1156M022AA Fusing Unit Control Signal ON OFF WIRING DIAGRAM M15 PWB A PJ 10A 2 L H 3 D M 93 1156SBM2400A EXIT UNIT Drive from the Fusing Unit is transmitted via a gear train to turn the 1st 2nd Paper Exit Rollers Left Door Drive Gear Paper Exit Swi
79. tuated exceeds a predetermined value the copier CPU determines thatthe Sub Hopper has run out of toner Sub Hopper Toner Magnet Empty Detecting Lever Eccentric Cam Sub Hopper Toner 1134M015AA Empty S witch S 106 Toner Empty Toner F ull 2224 22277777772 SSS o Q WS 1134M016AA Controlled Part Control Signal Sub Hopper Toner Empty Switch 106 PJ 11A 8B 2 L M 45 1156SBM1308A 13 8 Main Hopper Toner Replenishing Mechanism D Toner is supplied from the Main Hopper to Sub Hopper as follows When a toner empty condition is detected in the Sub Hopper itenergizes Main Hopper Toner Re plenishing Motor M8 to turn the Toner Bottle DThe Home Position Detecting Plate fitted to the coupling and Toner Bottle Home Position Sensor PC35 ensure thatthe Toner Supply P ortin the Toner Bottle is posi tioned at the top whenever the Toner Bottle is stopped Toner Bottle Toner Bottle Toner Supply Port Toner Bottle Home Position Sensor PC35 Toner Supply Toner Bottle 1136M034AA Holder Home Position Detecting Plate Main Hopper Toner QO Replenishing Motor Coupling M8 1156M018AB Controlled Part Control Signal ON OFF WIRING DIAGRAM M8 PJ 11A 4A L H 2 H Controlled Part Control Signal Blocked Unblocked WIRING DIAGRAM PC35 PJ 11A 9B L H 2 K M 46 1156SBM1309A 13 9 Swinging Out In the Main Hopper D To replace an empty Toner Bottle the user fi
80. ucing a halftone pattern on the surface ofthe PC Drum The Exposure Lamp voltage is then varied so thatthe output from the AIDC Sensor falls within the target range thereby ensuring an optimum exposure level Control Value Initial Value Exposure Lamp voltage 100V Areas Exposure Lamp voltage 200V Areas 40 to 80V 58V 80 to 160V 116V Relation with Manual Exposure Level of F5 The manual exposure level of Function F5 available from the Tech Rep mode enables fine adjustments of the Exposure Lamp voltage halftone image density to be made It specifies how many volts the optimum Exposure Lamp voltage determined by the image stabilization control is to be increased or decreased This fine adjustment value remains the same even when the optimum Exposure Lamp voltage is later varied by the image stabilization control Controlled Part Control Signal WIRING DIAGRAM Exposure Lamp Regulator P WB J REM PJ 8A 12 Pulse output 45 H amp AE Sensor gain adjustment The Exposure Lamp is turned ON to illuminate the blank sheet of paper placed on the Original Glass when an F5 orFF operation is run orthe halftone patch on the back of the Original Width Scale when the AE Sensor gain is adjusted in a se quence other than F5 or FF The reflected lightis then read by the AE Sensor and a gain adjustmentofthe AE Sensoris made to maintain an optimum Auto exposure level Controlled Part Control Signal ON OF
81. uipped with a Comb Electrode and a Scorotron Grid to deposit a uniform negative charge across the entire surface of the PC Drum For more details see 9 DRUM CHARGING 3 Image Erase Any areas of charge which are not to be developed are neutralized by lighting up LEDs For more details see 10 IMAGE ERASE LAMP 4 Exposure Light from the Exposure Lamp reflected off the original is guided to the surface of the PC Drum and reduces the level of the negative charges thereby forming an electrostatic latent image For more details see 11 OPTICAL SECTION 5 Developing Toner positively charged in the Developer Mixing Chamber is attracted onto the electrostatic latent image changing it to a visible developed image A DC negative bias voltage is applied to the Sleeve Magnet Roller to prevent toner from being attracted onto those areas of the PC Drum which correspond to the background areas of the original For more details see 13 DEVELOPMENT M 2 6 Paper Feeding Paper is fed either automatically from the 1st or 2nd Drawer or manually via the Multi Bypass Table or Manual Bypass Table Paper separation is accomplished by the torque limiter fitted to the Paper Separator R oll For more details see 18 PAPER TAKE UP FEED SECTION 7 Image Transfer The single wire Image Transfer Corona Unit applies a DC negative corona emission to the underside of the paper thereby attracting toner onto
82. wers accordingly unblocking the Lift Up Sensor PC 65 66 goes HIGH 4425M006AA D The Lift Up Motor M13 14 starts running rais ing the paper stack until the Lift Up Sensor PC 65 66 is blocked output goes LOW 4425M005AA D Energizing and deenergizing of the Lift Up Motor keeps constantthe pressure be tween the Paper Take Up Roll and paper regardless of the height of the paper stack Control Signal Blocked Unblocked WIRING DIAGRAM PC65 PWB A PJ 21A 2A L H 25 N PC66 PWB A PJ 21A 2B L H 32 K Control Signal Energized Deenergized WIRING DIAGRAM PWB A PJ 18A 5 L H 25 M PWB A PJ 18A 7 L H 25 M M 61 2 Inch Areas P aper Stack Lifting D When the Paper Descent Key UN5 6 is pressed after the drawer has been slid into the copier itenergizes the Lift Up Motor M13 14 and the motor starts turning forward D The rotation of the motor is transmitted via a gear train to the worm gear and the Paper Lifting Arm mounted on the same shaft raising the P aper Lifting P late This raises the paper stack D When the top ofthe paper stack is pressed against the Paper Take Up Roll and the paperstackis further raised the lightblocking plate ofthe PaperTake Up RollAssy blocks the Lift Up Sensor P C65 66 This deenergizes the Lift Up Motor and the paper stack raising motion is completed DAs the paper is consumed and the top level of the paper stack lowers the Lift Up Sensor is unbloc

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