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4.5 SPECIAL TOOLS AND LUBRICANTS ................................................... 4-83
4.5.1 SPECIAL TOOLS........................................................................... 4-83
4.5.2 LUBRICANTS ................................................................................ 4-83
5. PREVENTIVE MAINTENANCE SCHEDULE............................... 5-1
5.1 PM TABLE ................................................................................................ 5-1
6. REPLACEMENT AND ADJUSTMENT........................................ 6-1
6.1 SCANNER UNIT....................................................................................... 6-1
6.1.1 EXPOSURE GLASS ........................................................................ 6-1
6.1.2 SCANNER EXTERIOR/OPERATION PANEL ................................. 6-2
6.1.3 LENS BLOCK ASSEMBLY .............................................................. 6-3
6.1.4 ORIGINAL SIZE SENSORS/LAMP STABILIZER ............................ 6-4
6.1.5 EXPOSURE LAMP .......................................................................... 6-5
6.1.6 SCANNER MOTOR ......................................................................... 6-6
6.1.7 SCANNER WIRES........................................................................... 6-7
6.2 LASER UNIT........................................................................................... 6-10
6.2.1 CAUTION DECAL LOCATIONS .................................................... 6-10
6.2.2 LASER UNIT.................................................................................. 6-11
6.2.3 POLYGON MIRROR MOTOR ....................................................... 6-12
6.2.4 LD UNIT ......................................................................................... 6-12
6.2.5 LASER SYNCHRONIZATION DETECTOR ................................... 6-13
6.3 PHOTOCONDUCTOR UNIT (PCU)........................................................ 6-14
6.3.1 PCU ............................................................................................... 6-14
6.4 TRANSFER UNIT ................................................................................... 6-15
6.4.1 TRANSFER ROLLER UNIT ........................................................... 6-15
6.4.2 IMAGE DENSITY SENSOR........................................................... 6-16
6.5 FUSING/EXIT ......................................................................................... 6-17
6.5.1 FUSING UNIT ................................................................................ 6-17
6.5.2 THERMISTOR ............................................................................... 6-17
6.5.3 THERMOFUSE.............................................................................. 6-18
6.5.4 HOT ROLLER AND FUSING LAMP .............................................. 6-19
6.5.5 PRESSURE ROLLER/CLEANING ROLLER ................................. 6-20
6.5.6 PAPER EXIT SENSOR/PAPER OVERFLOW SENSOR ............... 6-21
6.6 PAPER FEED ......................................................................................... 6-22
6.6.1 FEED ROLLERS............................................................................ 6-22
6.6.2 PAPER END SENSOR .................................................................. 6-23
6.6.3 PAPER TRAY LIFT MOTORS ....................................................... 6-24
6.6.4 REGISTRATION CLUTCH............................................................. 6-25
6.6.5 PAPER FEED CLUTCHES ............................................................ 6-26
Lower Paper Feed Clutch .................................................................. 6-26
Upper Paper Feed Clutch. ................................................................. 6-26
6.6.6 RELAY CLUTCHES....................................................................... 6-27
6.6.7 PAPER SIZE DETECTOR/SPECIAL PAPER SENSOR................ 6-28
6.6.8 REGISTRATION SENSOR ............................................................ 6-29
6.6.9 RELAY SENSORS......................................................................... 6-30
Upper Relay Sensor........................................................................... 6-30
Lower Relay Sensor........................................................................... 6-30
6.7 PCBS AND OTHER ITEMS .................................................................... 6-31
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