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Model-U
(Machine Code: G071)
SERVICE MANUAL
!IMPORTANT SAFETY NOTICES
PREVENTION OF PHYSICAL INJURY 1. Before disassembling or assembling parts of the printer and peripherals, make sure that the printer power cord is unplugged. 2. The wall outlet should be near the printer and easily accessible. 3. If any adjustment or operation check has to be made with exterior covers off or open while the main switch is turned on, keep hands away from electrified or mechanically driven components. 4. The printer drives some of its components when it completes the warm-up period. Be careful to keep hands away from the mechanical and electrical components as the printer starts operation. 5. The inside and the metal parts of the fusing unit become extremely hot while the printer is operating. Be careful to avoid touching those components with your bare hands. HEALTH SAFETY CONDITIONS Toner and developer are non-toxic, but if you get either of them in your eyes by accident, it may cause temporary eye discomfort. Try to remove with eye drops or flush with water as first aid. If unsuccessful, get medical attention. OBSERVANCE OF ELECTRICAL SAFETY STANDARDS 1. The printer and its peripherals must be serviced by a customer service representative who has completed the training course on those models. 2. The NVRAM module (option) installed on the controller has a lithium battery which can explode if replaced incorrectly. Replace the NVRAM only with an identical one. The manufacturer recommends replacing the entire NVRAM. Do not recharge or burn this battery. Used NVRAM must be handled in accordance with local regulations. SAFETY AND ECOLOGICAL NOTES FOR DISPOSAL 1. Do not incinerate toner bottles or used toner. Toner dust may ignite suddenly when exposed to an open flame. 2. Dispose of used toner, the maintenance unit which includes developer or the organic photoconductor in accordance with local regulations. (These are non-toxic supplies.) 3. Dispose of replaced parts in accordance with local regulations. When keeping used lithium batteries in order to dispose of them later, do not put more than 100 batteries per sealed box. Storing larger numbers or not sealing them apart may lead to chemical reactions and heat build-up. 4. When keeping used lithium batteries in order to dispose of them later, do not put more than 100 batteries per sealed box. Storing larger numbers or not sealing them apart may lead to chemical reactions and heat build-up.
LASER SAFETY
The Center for Devices and Radiological Health (CDRH) prohibits the repair of laser-based optical units in the field. The optical housing unit can only be repaired in a factory or at a location with the requisite equipment. The laser subsystem is replaceable in the field by a qualified Customer Engineer. The laser chassis is not repairable in the field. Customer engineers are therefore directed to return all chassis and laser subsystems to the factory or service depot when replacement of the optical subsystem is required.
!WARNING
Use of controls, or adjustment, or performance of procedures other than those specified in this manual may result in hazardous radiation exposure.
!WARNING
WARNING: Turn off the main switch before attempting any of the procedures in the Laser Optics Housing Unit section. Laser beams can seriously damage your eyes. CAUTION MARKING:
Trademarks Microsoft®, Windows®, and MS-DOS® are registered trademarks of Microsoft Corporation in the United States and /or other countries. PostScript® is a registered trademark of Adobe Systems, Incorporated. PCL® is a registered trademark of Hewlett-Packard Company. Ethernet® is a registered trademark of Xerox Corporation. PowerPC® is a registered trademark of International Business Machines Corporation. Other product names used herein are for identification purposes only and may be trademarks of their respective companies. We disclaim any and all rights involved with those marks.
Conventions in this Manual
This manual uses several symbols.
Symbol
! " # $ %
What it means Refer to section number See Core Tech Manual for details Screw Connector Clip ring E-ring
Lengthwise, SEF (Short Edge Feed)
Sideways, LEF (Long Edge Feed)
TABLE OF CONTENTS
1 INSTALLATION ........................................................................... 1-1
1.1 INSTALLATION REQUIREMENTS ...........................................................1-1 1.1.1 ENVIRONMENT ...............................................................................1-1 1.1.2 MACHINE LEVEL .............................................................................1-1 1.1.3 SPACE REQUIREMENTS................................................................1-2 1.1.4 POWER REQUIREMENTS ..............................................................1-2 1.2 MACHINE INSTALLATION .......................................................................1-3 1.3 OPTIONS ..................................................................................................1-4
2 PREVENTIVE MAINTENANCE.................................................... 2-1
2.1 OVERVIEW ...............................................................................................2-1 Users Do the User PM Procedures.......................................................2-1 All PM Done by Technicians .................................................................2-1 Counters ...............................................................................................2-1 2.2 USER MAINTENANCE .............................................................................2-1 Main Unit...............................................................................................2-1 Optional Paper Tray Unit ......................................................................2-2 2.3 SERVICE MAINTENANCE........................................................................2-2 Main Unit...............................................................................................2-2 Bypass Tray..........................................................................................2-2 Optional Units .......................................................................................2-3 Paper Tray Unit.....................................................................................2-3 Finisher .................................................................................................2-3 Mail Box ................................................................................................2-3 Duplex Unit ...........................................................................................2-3 Interchange Unit ...................................................................................2-3
3 REPLACEMENT AND ADJUSTMENT......................................... 3-1
3.1 SPECIAL TOOLS ......................................................................................3-1 3.2 EXTERIOR COVERS ................................................................................3-2 3.2.1 REAR COVER..................................................................................3-2 3.2.2 LOWER LEFT COVER .....................................................................3-3 3.2.3 UPPER COVER, OPERATION PANEL............................................3-3 3.3 ELECTRICAL COMPONENTS..................................................................3-4 3.3.1 PRINTER CONTROLLER ................................................................3-4 3.3.2 CONTROLLER BOX.........................................................................3-4 3.3.3 BCU BOARD ....................................................................................3-4 3.3.4 I/O BOARD .......................................................................................3-5 3.3.5 PSU ..................................................................................................3-5 3.3.6 HIGH VOLTAGE SUPPLY BOARD ..................................................3-6 3.4 DRIVE UNITS............................................................................................3-7 3.4.1 DEVELOPMENT CLUTCHES ..........................................................3-7 K/Y Development Units.........................................................................3-7 C/M Development Units ........................................................................3-7 3.4.2 DEVELOPMENT MOTOR ................................................................3-8
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3.4.3 MAIN MOTOR ..................................................................................3-8 3.4.4 PCU GEAR BOX AND OPC BELT CLEANING CLUTCH ................3-9 3.4.5 FUSING UNIT MOTOR ....................................................................3-9 3.4.6 PAPER FEED MOTOR...................................................................3-10 3.4.7 PAPER FEED CLUTCH .................................................................3-10 3.4.8 REGISTRATION CLUTCH .............................................................3-10 3.5 LASER OPTICS SECTION .....................................................................3-11 3.5.1 CAUTION DECAL LOCATION .......................................................3-11 3.5.2 LASER OPTICS HOUSING UNIT ..................................................3-12 Adjusting for Image Skew ...................................................................3-14 3.5.3 LD UNIT..........................................................................................3-14 3.5.4 POLYGONAL MIRROR MOTOR AND SYNC. DETECTION BOARD...........................................................................................3-15 3.6 DEVELOPMENT UNIT ............................................................................3-16 3.7 PHOTOCONDUCTOR UNIT (PCU) ........................................................3-17 3.7.1 MAIN UNIT .....................................................................................3-17 3.7.2 WASTE TONER BOTTLES ............................................................3-18 3.7.3 CHARGE CORONA WIRE .............................................................3-19 3.7.4 CHARGE CORONA WIRE CLEANER MOTOR .............................3-20 3.7.5 OPC BELT CLEANING UNIT .........................................................3-20 3.7.6 OPC BELT UNIT ............................................................................3-21 3.7.7 IMAGE TRANSFER BELT CLEANING UNIT .................................3-21 3.7.8 IMAGE TRANSFER BELT UNIT ....................................................3-22 Reassembling .....................................................................................3-22 3.8 PAPER TRANSFER UNIT.......................................................................3-23 3.8.1 VERTICAL TRANSPORT UNIT......................................................3-23 3.8.2 TRANSFER ROLLER .....................................................................3-23 3.9 FUSING/PAPER EXIT.............................................................................3-24 3.9.1 FUSING UNIT.................................................................................3-24 3.9.2 OIL SUPPLY UNIT .........................................................................3-24 3.9.3 LAMPS ...........................................................................................3-25 3.9.4 FUSING INNER UNIT.....................................................................3-26 3.9.5 PRESSURE ROLLER THERMOFUSE...........................................3-26 3.9.6 FUSING BELT UNIT AND PRESSURE ROLLER UNIT .................3-26 3.9.7 PRESSURE ROLLER THERMISTOR ............................................3-27 3.9.8 PAPER EXIT UNIT AND PAPER EXIT/OVERFLOW SENSOR .....3-27 3.10 PAPER FEED AND TRANSPORT ........................................................3-28 3.10.1 FEED ROLLER AND FRICTION PAD ..........................................3-28 3.10.2 REGISTRATION SENSOR...........................................................3-29 3.10.3 PAPER FEED SENSOR...............................................................3-30 3.10.4 PAPER NEAR-END SENSOR......................................................3-30 3.10.5 PAPER END SENSOR.................................................................3-30 3.11 BYPASS TRAY......................................................................................3-31 3.11.1 PICKUP/FEED ROLLER ..............................................................3-31 3.11.2 PAPER FEED CLUTCH ...............................................................3-32 3.11.3 REVERSE ROLLER .....................................................................3-32
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4 TROUBLESHOOTING ................................................................. 4-1
4.1 SERVICE CALL.........................................................................................4-1 4.1.1 SERVICE CALL CONDITIONS ........................................................4-1 4.1.2 SC TABLE ........................................................................................4-2 4.2 CONTROLLER ERROR TABLE................................................................4-9 4.3 BLOWN FUSE CONDITIONS .................................................................4-12 4.4 CHECK POINTS FOR IMAGE PROBLEMS AT REGULAR INTERVALS ............................................................................................4-12
5 SERVICE TABLES....................................................................... 5-1
5.1 SERVICE PROGRAM MODE....................................................................5-1 5.1.1 OPERATION PANEL KEYS .............................................................5-1 5.1.2 STARTING SERVICE PROGRAM MODE........................................5-2 Procedure 1 ..........................................................................................5-2 Procedure 2 ..........................................................................................5-2 5.1.3 MAIN MENU .....................................................................................5-2 5.1.4 SPECIFYING A VALUE OR SETTING .............................................5-3 5.1.5 LEAVING SERVICE MODE..............................................................5-3 5.2 SP MODE TABLES ...................................................................................5-4 5.2.1 SERVICE (CONTROLLER SERVICE MODES) ...............................5-4 Bit Switch Settings ................................................................................5-6 How to Change Bit Switch Settings ......................................................5-6 Bit Switch 1 ...........................................................................................5-7 Bit Switch 2 ...........................................................................................5-7 Bit Switch 3 ...........................................................................................5-7 Bit Switch 4 ...........................................................................................5-7 Gamma Adjustment ..............................................................................5-8 Summary ..............................................................................................5-8 Adjustment Procedure ..........................................................................5-9 5.2.2 ENGINE SERVICE MODES ...........................................................5-11 SP1-XXX: (Feed) ................................................................................5-11 SP2-XXX: (Drum)................................................................................5-15 SP3-XXX: (Process) ...........................................................................5-24 SP5-XXX: (Mode) ...............................................................................5-27 SP7-XXX: (Data Log)..........................................................................5-33 Input Check Table...............................................................................5-39 Table 1: Tray 1 Paper Size .................................................................5-42 Table 2: 1st/2nd Bank Paper Size ......................................................5-42 Table 3: 1st/2nd Bank Near End.........................................................5-42 Output Check Table ............................................................................5-43 5.3 CONTROLLER SELF-DIAGNOSTICS ....................................................5-45 5.3.1 OVERVIEW ....................................................................................5-45 5.3.2 DETAILED SELF-DIAGNOSTICS ..................................................5-46 5.4 USER PROGRAM MODE .......................................................................5-47 5.5 UPGRADING SOFTWARE .....................................................................5-48 5.5.1 OVERVIEW ....................................................................................5-48 5.5.2 UPGRADING..................................................................................5-49 Procedure ...........................................................................................5-49
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Error Recovery....................................................................................5-50 Installation Error..................................................................................5-50 Power Failure......................................................................................5-50 5.6 DIP SWITCHES.......................................................................................5-51 Controller Board..................................................................................5-51 BCU Board..........................................................................................5-51
6 DETAILED SECTION DESCRIPTIONS ....................................... 6-1
6.1 OVERVIEW ...............................................................................................6-1 6.1.1 MAJOR COMPONENTS ..................................................................6-1 6.1.2 PAPER PATH...................................................................................6-2 6.1.3 DRIVE COMPONENTS ....................................................................6-3 6.1.4 ELECTRICAL COMPONENTS .........................................................6-4 Image Transfer .....................................................................................6-4 Development Units ...............................................................................6-5 Paper Path............................................................................................6-6 Drive Components ................................................................................6-7 Circuit Boards .......................................................................................6-8 6.2 PRINTING PROCESS OVERVIEW...........................................................6-9 6.3 PROCESS CONTROL ............................................................................6-11 6.3.1 OVERVIEW ....................................................................................6-11 6.3.2 PROCESS CONTROL STEPS .......................................................6-12 Six Steps.............................................................................................6-12 When is Process Control Done?.........................................................6-12 6.4 PHOTOCONDUCTOR UNIT (PCU) ........................................................6-13 6.4.1 OVERVIEW ....................................................................................6-13 6.4.2 NEW PHOTOCONDUCTOR UNIT DETECTION ...........................6-14 New PCU Sensor................................................................................6-14 Mechanism .........................................................................................6-14 PCU Counter ......................................................................................6-14 6.4.3 CHARGE CORONA UNIT ..............................................................6-15 Power Supply......................................................................................6-15 Wire Cleaning .....................................................................................6-15 Cleaning Interval .................................................................................6-15 Quenching ..........................................................................................6-16 6.4.4 OPC BELT DRIVE ..........................................................................6-16 6.4.5 OPC BELT CLEANING UNIT .........................................................6-17 Toner Collection Augurs .....................................................................6-17 Counter Blade + Brush .......................................................................6-17 Waste Toner Bottle Sensors ...............................................................6-17 Drive ...................................................................................................6-18 6.4.6 IMAGE TRANSFER BELT UNIT ....................................................6-19 Drive ...................................................................................................6-19 Belt Mark Sensor ................................................................................6-19 Bias Roller ..........................................................................................6-20 6.4.7 TRANSFER BELT CLEANING UNIT..............................................6-21 Bias Brush ..........................................................................................6-21 Bias Roller and Cleaning Blade ..........................................................6-21 Collecting Coil.....................................................................................6-21
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Waste Toner Bottle Sensors ...............................................................6-21 Contact Mechanism ............................................................................6-22 Power Supply......................................................................................6-23 Drive ...................................................................................................6-23 6.5 LASER EXPOSURE................................................................................6-24 6.5.1 OVERVIEW ....................................................................................6-24 Dust Shield Glass Cleaning ................................................................6-25 LD Unit Adjustment .............................................................................6-25 Polygonal Mirror..................................................................................6-25 Laser Diode Power Control.................................................................6-25 Maintenance Adjustment ....................................................................6-25 6.5.2 LD SAFETY SWITCH .....................................................................6-26 Operation Panel Message and Switch Mechanism.............................6-27 "Close Front Cover"........................................................................6-27 "Close Right Cover"........................................................................6-27 "Close Left Cover" ..........................................................................6-27 6.6 DEVELOPMENT .....................................................................................6-28 6.6.1 OVERVIEW ....................................................................................6-28 6.6.2 DEVELOPMENT UNIT ...................................................................6-29 Rollers and Agitators...........................................................................6-29 Replacing Units...................................................................................6-29 Memory Chip ......................................................................................6-29 6.6.3 TONER SUPPLY MECHANISM .....................................................6-30 Toner Cartridge Agitators....................................................................6-30 Drive Power Path ................................................................................6-30 Development Unit Agitator ..................................................................6-30 Toner Supply Roller and Doctor Roller ...............................................6-30 Shutter ................................................................................................6-30 6.6.4 TONER END DETECTION.............................................................6-31 Mechanism .........................................................................................6-31 Toner Near-end Detection ..................................................................6-31 Toner End Detection ...........................................................................6-31 Toner End Recovery ...........................................................................6-31 6.6.5 DEVELOPMENT UNIT CONTACT MECHANISM ..........................6-32 Mechanism .........................................................................................6-32 Reverse Rotation ................................................................................6-32 6.6.6 POWER SOURCE..........................................................................6-33 Development, Toner Supply, and Doctor Rollers................................6-33 Doctor Roller.......................................................................................6-33 6.7 PAPER FEED..........................................................................................6-34 6.7.1 OVERVIEW ....................................................................................6-34 Transport Speed .................................................................................6-35 Friction Pad.........................................................................................6-35 6.7.2 STANDARD TRAY DRIVE .............................................................6-35 Feed and Vertical Transport Rollers ...................................................6-35 Registration Roller ..............................................................................6-35 6.7.3 STANDARD TRAY BOTTOM PLATE LIFT .................................6-36 Lift Mechanism....................................................................................6-36 Paper Near End Detection ..................................................................6-36
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Paper End Detection...........................................................................6-36 6.7.4 STANDARD TRAY - PAPER SIZE DETECTION ...........................6-37 Mechanism .........................................................................................6-37 Switch Pattern.....................................................................................6-37 6.7.5 BYPASS TRAY...............................................................................6-38 Paper Feed Mechanism......................................................................6-38 Bypass Tray Drive Power Path ...........................................................6-38 Pick-up Solenoid .................................................................................6-38 Paper End Sensor ..............................................................................6-38 6.8 PAPER TRANSFER AND SEPARATION ...............................................6-39 6.8.1 OVERVIEW ....................................................................................6-39 Jammed Paper Release .....................................................................6-39 Image Transfer and Paper Separation................................................6-39 6.8.2 MECHANISM..................................................................................6-40 Contact/Separation .............................................................................6-40 Drive Power Path ................................................................................6-40 6.8.3 POWER SUPPLY ...........................................................................6-42 Electric Power Path ............................................................................6-42 Transfer Roller Bias ............................................................................6-42 Discharge Plate ..................................................................................6-42 Temperature/Humidity Control............................................................6-42 Roller Cleaning ...................................................................................6-43 6.9 FUSING UNIT AND OIL SUPPLY UNIT..................................................6-44 6.9.1 OVERVIEW ....................................................................................6-44 6.9.2 FUSING UNIT CONFIGURATION..................................................6-45 Fusing Belt..........................................................................................6-45 Oil Supply ...........................................................................................6-45 Heating Roller Lamp ...........................................................................6-45 Pressure Roller Lamp .........................................................................6-45 Pressure Roller Pawls.........................................................................6-45 Fusing Bias .........................................................................................6-46 Fusing Unit SCs ..................................................................................6-46 6.9.3 TEMPERATURE CONTROL ..........................................................6-47 6.9.4 OIL SUPPLY AND CLEANING.......................................................6-48 Oil Supply ...........................................................................................6-48 Oil Path ...............................................................................................6-48 Oil Recycling.......................................................................................6-48 Belt Cleaning ......................................................................................6-48 Oil End Detection ................................................................................6-49 Fusing unit switch ...............................................................................6-49 6.9.5 DRIVE.............................................................................................6-49 Drive Power Path (Fusing Unit and Oil Supply Roller) ........................6-49 Drive Power Path (Pressure Roller) ....................................................6-49 6.9.6 ENERGY SAVER MODE................................................................6-50 Level 1 Energy Saver Mode (default: on)............................................6-50 Level 2 Energy Saver Mode................................................................6-50 Ready Mode .......................................................................................6-50 6.9.7 PAPER EXIT ..................................................................................6-51 Drive Power Path ................................................................................6-51
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Paper Jam Detection ..........................................................................6-51 6.9.8 OVERFLOW DETECTION .............................................................6-51 6.10 PRINTED CIRCUIT BOARDS ...............................................................6-52 6.10.1 PRINTER CONTROLLER ............................................................6-52 Function ..............................................................................................6-52 Memory...............................................................................................6-52 Interfaces ............................................................................................6-52 Slots....................................................................................................6-53 Options ...............................................................................................6-53 DIP Switch ..........................................................................................6-53 LED Indicators ....................................................................................6-53 6.10.2 BASE ENGINE CONTROL UNIT (BCU).......................................6-54 Function ..............................................................................................6-54 Upgrading ...........................................................................................6-54 Nonvolatile Random Access Memory (NVRAM) .................................6-54 DIP Switch ..........................................................................................6-54 6.10.3 INPUT/OUTPUT (I/O) BOARD .....................................................6-55 6.10.4 POWER SUPPLY UNIT (PSU) .....................................................6-55 6.10.5 HIGH VOLTAGE SUPPLY............................................................6-55 6.11 CONTROLLER ......................................................................................6-56 6.11.1 OVERVIEW ..................................................................................6-56 6.11.2 BOARD LAYOUT..........................................................................6-58 6.11.3 PRINT DATA PROCESSING .......................................................6-59 RPCS Driver .......................................................................................6-59 PCL5c Driver ......................................................................................6-59 PS3 Driver ..........................................................................................6-60 CMS (Color Management System) .....................................................6-60 Gray Correction ..................................................................................6-60 BG/UCR (Black Generation/Under Color Removal)............................6-60 Gamma Correction .............................................................................6-60 Toner Limitation ..................................................................................6-61 Dither Processing and ROP/RIP.........................................................6-61 6.11.4 CONTROLLER FUNCTIONS .......................................................6-62 Sample Print .......................................................................................6-62 Locked Print........................................................................................6-62 Paper Source Selection ......................................................................6-63 Tray Priority (Auto Tray Select)...........................................................6-63 Tray Lock ............................................................................................6-63 Manual Tray Select .............................................................................6-63 Auto Continue .....................................................................................6-64 Overview.............................................................................................6-64 Auto Tray Select .................................................................................6-64 Manual Tray Select .............................................................................6-64 Paper Output Tray ..............................................................................6-65 Output Tray Selected ..........................................................................6-65 Sequential Stacking ............................................................................6-65 Stapling...............................................................................................6-66 6.12 IEEE1394 INTERFACE .........................................................................6-67 6.12.1 SPECIFICATIONS........................................................................6-67
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Hardware Specification .......................................................................6-67 System Requirements.........................................................................6-67 6.12.2 IEEE1394 .....................................................................................6-67 6.12.3 BLOCK DIAGRAM........................................................................6-68 6.12.4 PIN ASSIGNMENT .......................................................................6-68 6.12.5 REMARKS ABOUT THIS INTERFACE KIT..................................6-69 6.12.6 TROUBLESHOOTING NOTES ....................................................6-69
PERIPHERALS
PAPER TRAY UNIT (Machine Code: G313) 1 REPLACEMENT AND ADJUSTMENT...................................G313-1
1.1 1.2 1.3 1.4 1.5 1.6 REAR COVER.................................................................................... G313-1 PAPER FEED CLUTCH ..................................................................... G313-1 LIFT MOTOR...................................................................................... G313-2 PAPER FEED MOTOR ...................................................................... G313-2 CONTROLLER BOARD ..................................................................... G313-2 PICK-UP/FEED/SEPARATION ROLLERS......................................... G313-3
2 DETAILED DESCRIPTIONS ..................................................G313-4
2.1 MECHANICAL COMPONENT LAYOUT ............................................ G313-4 Feed and Reverse Roller (FRR) .................................................... G313-4 Drive Path ...................................................................................... G313-4 Paper End Feeler Method.............................................................. G313-4 2.2 ELECTRICAL COMPONENT LAYOUT.............................................. G313-5 2.3 DRIVE LAYOUT ................................................................................. G313-6 2.4 PAPER SIZE DETECTION................................................................. G313-7 2.5 PAPER LIFT ....................................................................................... G313-8 2.6 PAPER HEIGHT AND END DETECTION .......................................... G313-9 Paper Height Detection.................................................................. G313-9 Paper End Detection...................................................................... G313-9
INTERCHANGE UNIT (Machine Code: G305) 1. REPLACEMENT AND ADJUSTMENT..................................G305-1
1.1 EXTERIOR COVER AND PAPER EXIT SENSOR............................. G305-1 1.2 CONTROL BOARD ............................................................................ G305-1
2. DETAILED DESCRIPTIONS .................................................G305-2
2.1 ELECTRICAL COMPONENTS........................................................... G305-2 2.2 DRIVE ................................................................................................ G305-2 2.3 MECHANISM...................................................................................... G305-3
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DUPLEX UNIT (Machine Code: G303) 1 REPLACEMENT AND ADJUSTMENT...................................G303-1
1.1 EXTERIOR COVER ........................................................................... G303-1 1.2 ENTRANCE/EXIT SENSORS ............................................................ G303-1 Entrance Sensor ............................................................................ G303-1 Exit Sensor .................................................................................... G303-1 1.3 INVERTER MOTOR ........................................................................... G303-2 1.4 CONTROLLER BOARD ..................................................................... G303-2 1.5 TRANSPORT MOTOR ....................................................................... G303-2
2 DETAILED DESCRIPTIONS ..................................................G303-3
2.1 2.2 2.3 2.4 OVERVIEW ........................................................................................ G303-3 ELECTRICAL COMPONENT LAYOUT.............................................. G303-4 DRIVE LAYOUT ................................................................................. G303-5 DUPLEX PAPER FEED ORDER........................................................ G303-6 2.4.1 LONGER THAN A4/LT LEF....................................................... G303-6 2.4.2 UP TO A4/LT LEF...................................................................... G303-7 2.5 REVERSE MECHANISM ................................................................... G303-8
500-SHEET FINISHER (Machine Code: G314) 1 REPLACEMENT AND ADJUSTMENT...................................G314-1
1.1 EXTERIOR COVERS ......................................................................... G314-1 Front Cover.................................................................................... G314-1 Rear Cover .................................................................................... G314-1 Lower Guide .................................................................................. G314-2 Reassembly ................................................................................... G314-2 Upper Cover .................................................................................. G314-3 Right Cover.................................................................................... G314-3 1.2 ENTRANCE UPPER GUIDE AND PAPER EXIT UNIT ...................... G314-4 1.3 MOTORS............................................................................................ G314-5 1.3.1 MAIN MOTOR ........................................................................... G314-5 1.3.2 JOGGER MOTOR ..................................................................... G314-5 1.4 STAPLER ........................................................................................... G314-6 1.5 PADDLE ROLLER SOLENOID .......................................................... G314-6 1.6 MAIN CONTROL PCB........................................................................ G314-7 1.7 OUTPUT TRAY UNIT......................................................................... G314-8
2 DETAILED DESCRIPTIONS ................................................G314-10
2.1 OVERALL MACHINE INFORMATION ............................................. G314-10 2.1.1 COMPONENT LAYOUT .......................................................... G314-10 2.1.2 DRIVE LAYOUT ...................................................................... G314-11 2.1.3 ELECTRICAL COMPONENTS ................................................ G314-12 2.2 DETAILED SECTION DESCRIPTIONS ........................................... G314-14 2.2.1 OUTPUT TRAY ....................................................................... G314-14
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Stack Height Detection ................................................................ G314-14 Output Tray Up/Down Mechanism ............................................... G314-15 Overview...................................................................................... G314-15 Output Tray Downward Movement .............................................. G314-15 Output Tray Upward Movement................................................... G314-15 2.2.2 PAPER FEED.......................................................................... G314-16 Overview...................................................................................... G314-16 Straight Feed-out Mode ............................................................... G314-16 Shift Sorting Mode ....................................................................... G314-17 Stapling Mode.............................................................................. G314-19 2.2.3 JAM CONDITIONS .................................................................. G314-20 2.2.4 ERROR DETECTION .............................................................. G314-20
FOUR-BIN MAILBOX (Machine Code: G312) 1. REPLACEMENT AND ADJUSTMENT..................................G312-1
1.1 EXTERIOR COVER ........................................................................... G312-1 1.2 MAIN MOTOR AND CONTROLLER BOARD..................................... G312-1 1.3 VERTICAL TRANSPORT AND PAPER OVERFLOW SENSORS ..... G312-2
2. DETAILED DESCRIPTIONS .................................................G312-3
2.1 OVERVIEW ........................................................................................ G312-3 2.2 DRIVE ................................................................................................ G312-4 Drive Path ...................................................................................... G312-4 2.3 ELECTRICAL COMPONENT LAYOUT.............................................. G312-5 2.4 PAPER DISTRIBUTION ..................................................................... G312-6 Mechanism .................................................................................... G312-6 Paper Overflow Sensor.................................................................. G312-6 2.5 BASIC OPERATION........................................................................... G312-7 2.6 PAPER MISFEED DETECTION TIMING ........................................... G312-7
SPECIFICATIONS.....................................................................SPEC-1
1 GENERAL SPECIFICATIONS.............................................................. SPEC-1 1.1 MAIN UNIT .................................................................................. SPEC-1 1.2 SUPPORTED PAPER SIZES...................................................... SPEC-4 1.2.1 MAIN TRAY, BYPASS TRAY, AND DUPLEX UNIT ........... SPEC-4 1.2.2 FINISHER, MAIL BOX, AND PAPER TRAY UNIT.............. SPEC-5 2 SOFTWARE ACCESSORIES .............................................................. SPEC-6 2.1 PRINTER DRIVERS .................................................................... SPEC-6 2.2 UTILITY SOFTWARE .................................................................. SPEC-6 3 MACHINE CONFIGURATION 3.1 SYSTEM COMPONENTS ........................................................... SPEC-7 EXTERIOR ................................................................................... SPEC-7 INTERIOR..................................................................................... SPEC-8
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MAINTENANCE KITS................................................................... SPEC-8 3.2 OPTIONAL EQUIPMENT ............................................................ SPEC-9 PAPER TRAY UNIT...................................................................... SPEC-9 FINISHER ..................................................................................... SPEC-9 MAIL BOX................................................................................... SPEC-10 DUPLEX UNIT ............................................................................ SPEC-10 INTERCHANGE UNIT ................................................................ SPEC-10
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17 September, 2001
INSTALLATION REQUIREMENTS
1.1 INSTALLATION REQUIREMENTS
1.1.1 ENVIRONMENT
1. Temperature Range: 2. Humidity Range: 3. Ambient Illumination: 4. Ventilation: 10°C to 32°C (50°F to 89°F) 20% to 80% RH Less than 2,000 lux (keep the machine out of direct sunlight.) 3 times/hr/person or more
5. Avoid exposing the machine to sudden temperature changes, which include: 1) Direct cool air from an air conditioner 2) Direct heat from a heater 6. Avoid installing the machine in areas that may be exposed to corrosive gas. 7. Install the machine at a location lower than 2,500 m (8,200 ft.) above sea level. 8. Install the machine on a strong, level base. ( 1.1.2) 9. Avoid installing the machine in areas that may be subjected to strong vibration.
1.1.2 MACHINE LEVEL
Front to back: Right to left: Within 5 mm (0.2") of level Within 5 mm (0.2") of level
1-1
Installation
1. INSTALLATION
INSTALLATION REQUIREMENTS
17 September, 2001
1.1.3 SPACE REQUIREMENTS
_
^
`
A: Over 100 mm (4") B: Over 100 mm (4") C: Over 550 mm (22") D: Over 750 mm (30")
a
G070I001.WMF
1.1.4 POWER REQUIREMENTS
!CAUTION
1. Insert the plug firmly in the outlet. 2. Avoid using an outlet extension plug or cord. 3. Ground the machine. 1. Input voltage level: 120 V, 60 Hz, More than 11 A 220 to 240 V, 50/60 Hz, More than 7 A 2. Permissible voltage fluctuation: ±10% 3. Do not put or place anything on the power cord.
1-2
17 September, 2001
MACHINE INSTALLATION
Refer to the Operating Instructions for details. If the customer has a service contract, change the settings of the following SP modes depending on the contract type.
Item Meter charge SP No. SP5-930-1 Function Specifies whether the meter charge mode is enabled or disabled. If the user is doing the user PM procedures, set meter charge to `Off'. If the technician is doing all the PM, set meter charge to `On'. Meter charge mode enabled: · The Counter menu appears immediately after the Menu key is pressed. · The counter type selected by the counting method (SP5-045-1) can be displayed with the Counter menu. · The counter values can also be printed with the Counter menu. · The selected counter starts from a negative number. Meter charge mode disabled: · The Counter menu is not displayed. · The total counter starts from 0. Specifies whether the counting method used in meter charge mode is based on developments or prints. Important: This SP can only be done before the negative counters are reset with SP7825-001 Specifies whether the counter is doubled for A3/11" x 17" paper. Specifies whether the PM warning for the charge corona unit is displayed when the replacement time arrives. 1: Displayed 0: Not displayed Specifies whether the PM warning for the PCU is displayed. 1: Displayed 0: Not displayed Specifies whether the PM warning for the feed rollers in the optional paper feed unit is displayed. 1: Displayed 0: Not displayed Default Off
Counting method
SP5-045-1
Developments
A3/11" x 17" double counting PM warning display 1
SP5-104-1 SP5-931-1
No: Single counting 1
PM warning display 2
SP5-931-2
1
PM warning display 3
SP5-931-3
0
1-3
Installation
1.2 MACHINE INSTALLATION
OPTIONS
Item Fax No. setting SP No. SP5-812-2
17 September, 2001
Function Programs the service station fax number. The number is printed on the counter list when the meter charge mode is selected, so that the user can fax the counter data to the service station. Resets the counters to 0. Important: This must be done at installation after all the above settings have been finished. The negative counters used in meter charge mode will be reset to zero. Default
Counter reset
SP7-825-1
NOTE: 1) The default setting for this machine is meter-charge mode off. 2) The meter-charge counter cannot be reset.
1.3 OPTIONS
Refer to the Option Setup Guide for details.
No. 1 2 3 4 5 6 7 8 9 4-bin mailbox Interchange unit Duplex unit Paper tray unit Printer hard disk DIMM memory (64, 128, or 256 MB modules available) IEEE1394 interface unit User account enhancement unit Optional Unit 500-sheet finisher Alternative No. 2 No. 1 Requirements · No. 3 · Hard disk or memory (extra 64 MB or more) for sort mode · No. 3 · No. 3
· Extra 64 MB (or more) optional SDRAM module
NOTE: 1) You cannot install the finisher and mailbox on the same machine. 2) You can install either 1 or 2 paper tray units.
1-4
17 September, 2001
OVERVIEW
2. PREVENTIVE MAINTENANCE
2.1 OVERVIEW
Users Do the User PM Procedures
Preventive Maintenance
The user does PM for the items in section 2.2. The technician does PM for the items in section 2.3. Meter-charge mode must be set to "off" (SP5-930, 5.2).
All PM Done by Technicians
The technician does PM for the items in sections 2.2 and 2.3. Meter-charge mode must be set to "on" (SP5-930, 5.2).
Counters
When a maintenance counter for a unit has reached the limit, the corresponding message is displayed on the operation panel. After completing the maintenance procedure for that item, reset the counter (SP7-804, 5.2).
2.2 USER MAINTENANCE
Abbreviations: Clean, Inspect, Lubricate, Replace, KiloPrints, KiloDevelopments, WheneverNecessary
Main Unit
Item O/B and T/B waste toner bottles Oil supply unit Fusing unit with paper feed roller KP 30 R* R** R 120 Detection Waste toner sensors Oil end sensor Exit sheet counter Reset Auto-reset (sensor) Auto-reset (sensor) Manual reset Machine stops Yes Yes Yes
* : Replacement period calculated for a 50% color ratio (the actual waste toner bottle condition is detected with the sensors) ** : Standard replacement period (the actual oil amount is detected with the sensor)
2-1
SERVICE MAINTENANCE
17 September, 2001
Item Black development unit Color development unit Charge corona unit & dust filters PCU *Displayed with SP7-906
KD 120 R R R R 240
Detection Dev. Bk counter* Dev. color counter* Charge corona counter* PCU counter*
Reset Auto-reset (memory chip) Auto-reset (memory chip) Manual reset Auto-reset (new PCU sensor)
Machine stops Yes Yes No No
Item Registration roller Dust shield glass (LD unit) Bottom plate pad
WN C C C
Detection None None None
Reset None None None
Machine stops No No No
Remarks damp cloth and dry cloth Built-in cleaning brush damp cloth and dry cloth
Optional Paper Tray Unit
Item Feed, pick-up, and separation rollers 150KP R Detection None Reset None Machine stops No Remarks damp cloth and dry cloth
2.3 SERVICE MAINTENANCE
Abbreviations: Clean, Inspect, Lubricate, Replace, KiloPrints, KiloDevelopments, WheneverNecessary
Main Unit Bypass Tray
Item Feed Roller Pick-up Roller Separation Roller WN C C C Remarks damp cloth and dry cloth damp cloth and dry cloth damp cloth and dry cloth
2-2
17 September, 2001
SERVICE MAINTENANCE
Optional Units Paper Tray Unit
Item Relay Roller Bottom Plate Pad WN C C Remarks damp cloth and dry cloth damp cloth and dry cloth
Finisher
Item Rollers Sensors Anti-Static Brush Bushings Stapler R WN C C C L Remarks damp cloth and dry cloth Blower blush or dry cloth Blower blush or dry cloth Launa oil when abnormal noise occurs Every 200K staples (estimated replacement period)
Mail Box
Item Rollers Tray Paper Sensors WN C C Remarks damp cloth and dry cloth Blower blush or dry cloth
Duplex Unit
Item Rollers Feed/exit sensors WN C C Remarks damp cloth and dry cloth Blower blush or dry cloth
Interchange Unit
Item Paper Exit Sensor WN C Remarks Blower blush or dry cloth
2-3
Preventive Maintenance
17 September, 2001
SPECIAL TOOLS
3. REPLACEMENT AND ADJUSTMENT
!CAUTION
Turn off the main power switch and unplug the machine before beginning any of the procedures in this section. NOTE: This manual uses the following symbols. : See or Refer to ! : Screws " : Connector $ : E-ring
# : Clip ring
Replacement Adjustment
3.1 SPECIAL TOOLS
Part Number N8036701 G0219350 Part Name Flash Memory Card - 4MB Loop-back connector - Parallel
3-1
EXTERIOR COVERS
17 September, 2001
3.2 EXTERIOR COVERS
3.2.1 REAR COVER
1. Duct cover [A] (4 hooks) 2. Ozone filter [B] 3. Printer controller [C] (! x 2) [A]
[C]
G070R702.WMF
[B]
4. Rear cover [D] (! x 2)
[D]
G070R703.WMF
3-2
17 September, 2001
EXTERIOR COVERS
3.2.2 LOWER LEFT COVER
1. Lower left cover [A] (! x 3)
[A]
G070R704.WMF
3.2.3 UPPER COVER, OPERATION PANEL
1. Open the right cover [A]. 2. Upper right cover [B] 3. Paper exit cover [C] (! x 1) 4. Open the front cover [D]. 5. Upper cover [E] (! x 4) 6. Operation panel [F] (4 hooks, " x 2, ! x 1) NOTE: Insert a screwdriver between the upper cover and the main unit and unhook the panel.
G070R701.WMF
[E] [F]
[C]
[B] [D]
[A]
3-3
Replacement Adjustment
ELECTRICAL COMPONENTS
17 September, 2001
3.3 ELECTRICAL COMPONENTS
3.3.1 PRINTER CONTROLLER
3.2.1 NOTE: Remove the NVRAM from the old controller board, and install it on the new one. If the controller NVRAM is defective, reset the total counter to 0 after changing the NVRAM, if meter charge mode is enabled.
3.3.2 CONTROLLER BOX
1. Rear cover ( 3.2.1) 2. Cooling fan [A] (! x 2) NOTE: When reassembling, install the fan with the label facing the inside. 3. Controller box [B] (! x 11) NOTE: Do not remove the BCU board base with the controller box. NOTE: When putting back the controller box, take care not to pinch the cable from the I/O board.
[B] [A]
G070R705.WMF
3.3.3 BCU BOARD
1. Controller box ( 3.3.2) 2. All " (12) 3. 1 flat cable 4. BCU board base [A] (! x 5) 5. BCU board [B] (! x 5) NOTE: Remove the NVRAM from the old BCU board, and install it on the new one. [B] [A]
G070R706.WMF
3-4
17 September, 2001
ELECTRICAL COMPONENTS
3.3.4 I/O BOARD
1. Controller box ( 3.3.2) 2. All " (33) 3. I/O board [A] (! x 4) [A]
G070R707.WMF
3.3.5 PSU
[B] 1. Controller box ( 3.3.2) 2. Flywheel (! x 3) ( 3.4.1) 3. Duct [A] (" x 1, ! x 1) NOTE: When removing and reassembling the fan, install it with the label facing the outside. 4. PSU protector [B] (! x 1) 5. Unlink the main switch [C]. 6. PSU base (" x 8, ! x 4) NOTE: 1) Remove the PSU [D] with the PSU base. 2) When reassembling, check that the main switch is linked to the PSU. [A] [D]
G070R717.WMF
[C]
3-5
Replacement Adjustment
ELECTRICAL COMPONENTS
17 September, 2001
3.3.6 HIGH VOLTAGE SUPPLY BOARD
1. Photoconductor unit ( 3.7) 2. Right inner cover ( 3.10.2) 3. Photoconductor unit rail [A] (! x 2) [A]
G070R719.WMF
[C] 4. " [B] x 1 5. Bushing [C] x 1 6. High voltage supply board [D] (" x 17, ! x 6) [B]
[D]
G070R720.WMF
3-6
17 September, 2001
DRIVE UNITS
3.4 DRIVE UNITS
3.4.1 DEVELOPMENT CLUTCHES
1. Controller box ( 3.3.2)
K/Y Development Units
1. Unhook the lock [A] and pull out the clutch [B] (" x 1).
Replacement Adjustment
[B] [A]
G070R708.WMF
C/M Development Units
1. Flywheel [A] (! x 3) 2. Unhook the lock [B] and pull out the clutch [C] (" x 1).
[C]
[B] [A]
G070R709.WMF
3-7
DRIVE UNITS
17 September, 2001
3.4.2 DEVELOPMENT MOTOR
1. Controller box ( 3.3.2) 2. Development motor [A] (" x 1, ! x 3)
[A]
G070R710.WMF
3.4.3 MAIN MOTOR
1. Controller box ( 3.3.2) 2. Flywheel [A] (! x 3) 3. Main motor [B] (" x 1, ! x 3) [B]
[A]
G070R711.WMF
3-8
17 September, 2001
DRIVE UNITS
3.4.4 PCU GEAR BOX AND OPC BELT CLEANING CLUTCH
1. I/O board (3.3.4 ) 2. Main motor ( 3.4.3) 3. C/M development unit clutch ( 3.4.1) 4. Bracket [A] (! x 2) 5. Tension spring [B] 6. " x 1 [C] 7. Gear box and clutch assembly [D] (! x 5) [A] [B]
G070R712.WMF
[C]
[D]
Replacement Adjustment
3.4.5 FUSING UNIT MOTOR
1. Rear cover ( 3.2.1) 2. Fusing unit motor (" x 1, ! x 3) [A]
[A]
G070R713.WMF
3-9
DRIVE UNITS
17 September, 2001
3.4.6 PAPER FEED MOTOR
1. Rear cover ( 3.2.1) 2. Pull out the handle [A]. 3. Paper feed motor [B] (" x 1, ! x 3) [A]
[B]
G070R714.WMF
3.4.7 PAPER FEED CLUTCH
1. Rear cover ( 3.2.1) 2. Pull out the handle [A]. 3. Connector bracket [B] (" x 6, ! x 2) 4. Paper feed clutch [C] (" x 1, ! x 2) [A]
[C] [B]
G070R716.WMF
3.4.8 REGISTRATION CLUTCH
1. Rear cover ( 3.2.1) 2. Unhook the lock [A] and pull the clutch out [B] (" x 1).
[B]
[A]
G070R715.WMF
3-10
17 September, 2001
LASER OPTICS SECTION
3.5 LASER OPTICS SECTION !WARNING
Turn off the main switch and unplug the machine before beginning any of the procedures in this section. Laser beams can cause serious eye injury.
3.5.1 CAUTION DECAL LOCATION
Replacement Adjustment
LD_CAUTION.TIF G070R208.WMF
!DANGER
Turn off the main switch and disconnect the power plug from the power outlet before beginning any disassembly or adjustment of the laser unit. This printer uses a class-1 laser beam with a wavelength of 650 nm and an output of 7 mW. The laser can cause serious eye injury.
3-11
LASER OPTICS SECTION
17 September, 2001
3.5.2 LASER OPTICS HOUSING UNIT
1. Open the left cover [A]. 2. ID chip connectors [B] (" x 4) 3. Development units [C] x 4 [B] [C]
[A]
G070R301.WMF
4. Rear cover ( 3.2.1) 5. Left cover [D] 6. Lower left cover [E] (! x 3)
[E]
[D]
G070R201.WMF
7. Controller box ( 3.3.2) 8. Flat cable [F] NOTE: When reassembling, connect the flat cable with the blue side up. 9. " x 4 [G] 10. Harness clamps [H] [G]
[F] [H]
G070R202.WMF
3-12
17 September, 2001
LASER OPTICS SECTION
11. Open the front cover. 12. Remove the dust shield glass cleaner lever [A] from the dust shield glass cleaner. NOTE: The dust shield glass cleaner lever is the blue lever at the right side of the main switch.
[A]
G070R209.WMF
13. LD cover [B] (! x 2) 14. Laser optics housing unit [C] (! x 4)
[B]
[C]
G070R203.WMF
3-13
Replacement Adjustment
LASER OPTICS SECTION
17 September, 2001
Adjusting for Image Skew
1. Positioning pin [A] (! x 1) 2. Loosen ! (x 4) [B]. 3. Adjust the position of the laser optics housing unit [ NOTE]. 4. Fasten ! (x 4) [B]. NOTE: After changing the position of the laser optics housing unit, do not reinstall the positioning pin. Keep the pin in a safe place.
[ NOTE]
[A]
[B]
G070R207.WMF
1mm Paper feed (A3 SEF)
G070R001.WMF
NOTE: When the image skews as shown, move the unit 1 mm in the direction of the black arrow as shown in the upper diagram.
3.5.3 LD UNIT
1. Laser optics housing unit ( 3.5.2) 2. Flat cable [A] NOTE: When reassembling, connect the flat cable with the blue side down. 3. Harness [B] 4. LD unit [C] (! x 3) NOTE: Do not move the screw [D]. Do not break the paint lock. [A] [D]
[C]
[B]
3-14
G070R206.WMF
17 September, 2001
LASER OPTICS SECTION
3.5.4 POLYGONAL MIRROR MOTOR AND SYNC. DETECTION BOARD
!WARNING
Do not touch any edges of the polygon mirror, spring, or bracket. These edges can cause serious injury. 1. Development units, LD cover ( 3.5.2) 2. Cover [A] (! x 1) NOTE: Before removing the cover, clean up spilled toner around the laser optics housing unit. Prevent the toner from entering into the unit. [A]
G070R204.WMF
3. Polygonal mirror motor [B] (" x 1, ! x 4) 4. Sync. detection board [C] (" x 1, ! x 1)
[C]
[B]
G070R205.WMF
3-15
Replacement Adjustment
DEVELOPMENT UNIT
17 September, 2001
3.6 DEVELOPMENT UNIT !CAUTION
Do not touch the development unit sleeves or ID chip terminals.
[B]
[C]
[A]
G070R301.WMF
1. Open the left cover [A]. 2. ID chip connector [B] 3. Push the left end of the development unit [C] to the right, lift the unit, and pull the unit out of the machine. NOTE: 1) Remove the units in the order K, Y, C, and M. For example, before removing the M unit, remove the K, Y, and C units first. 2) When reassembling, make sure each development unit is installed correctly. Otherwise, a white line or band may appear on one half of the paper.
3-16
17 September, 2001
PHOTOCONDUCTOR UNIT (PCU)
3.7 PHOTOCONDUCTOR UNIT (PCU)
3.7.1 MAIN UNIT
NOTE: 1) Before replacing any of the parts or consumables in this section, cover the floor with cloth or some sheets of paper. 2) Never tilt the unit. The toner may come out of the unit. 3) When handling the unit, grasp the brown (front) and green (top) grips. Never touch the OPC (left) or transfer (right) belts. 4) After removing the photoconductor unit, cover it with a light-proof sheet. Keep it in a dark place.
Replacement Adjustment
G070R308.WMF
1. Open the front cover. 2. Open the right cover. 3. ! x 4 4. Pull the unit out of the machine. 5. Grasp the brown and green grips. 6. Lift the unit and remove it.
3-17
PHOTOCONDUCTOR UNIT (PCU)
17 September, 2001
3.7.2 WASTE TONER BOTTLES
1. O/B waste toner bottle [A]
[A]
G070R302.WMF
2. T/B waste toner bottle [B]
[B]
G070R303.WMF
3-18
17 September, 2001
PHOTOCONDUCTOR UNIT (PCU)
3.7.3 CHARGE CORONA WIRE
1. Modular cable [A] 2. Loosen ! (x 1) [B] 3. Charge corona unit [C] [A] [B]
Replacement Adjustment
[C]
G070R304.WMF
4. Front bracket (! x 1) [D] 5. Grid [E] 6. Rear bracket [F] [D] [E]
[F]
G070R305.WMF
[H] 7. Front wire cover [G] 8. Rear wire cover [H] 9. Unhook the charge wire [I]. 10. Wire cleaner [J] (# x 1) [G] [J] [I]
G070R307.WMF
3-19
PHOTOCONDUCTOR UNIT (PCU)
17 September, 2001
3.7.4 CHARGE CORONA WIRE CLEANER MOTOR
1. Charge corona unit ( 3.7.3) 2. Front motor cover [A] (! x 3) 3. Motor [B]
[A] [B]
G070R306.WMF
3.7.5 OPC BELT CLEANING UNIT
1. Photoconductor unit ( 3.7.1) 2. Charge corona unit ( 3.7.3) 3. Drive gear [A] (! x 1) 4. Rear brace [B] (! x 1) 5. Front brace [C] (! x 1) 6. OPC belt cleaning unit [D] (! x 2) NOTE: Hold up the photoconductor unit while removing the OPC belt cleaning unit. [B] [A]
[C]
G070R315.WMF
3-20
17 September, 2001
PHOTOCONDUCTOR UNIT (PCU)
3.7.6 OPC BELT UNIT
1. Photoconductor unit ( 3.7.1) 2. OPC belt cleaning unit ( 3.7.5) 3. OPC belt unit [A] (! x 4) NOTE: After installing a new OPC belt, do SP 2-940 (OPC lubrication mode) then SP 3-001 (forced process control). [A]
G070R316.WMF
3.7.7 IMAGE TRANSFER BELT