Ricoh G147 Service Manual page 14

2.2 LUBRICATION ......................................................................................2-6
REPLACEMENT AND ADJUSTMENT
3. REPLACEMENT AND ADJUSTMENT.................................... 3-1
3.1 PRECAUTIONS.....................................................................................3-1
3.1.1 GENERAL PRECAUTIONS .........................................................3-1
3.1.2 LASER UNIT PRECAUTIONS .....................................................3-1
3.2 SPECIAL TOOLS AND LUBRICANTS ..................................................3-2
3.2.1 SPECIAL TOOLS .........................................................................3-2
3.2.2 LUBRICANTS...............................................................................3-2
3.3 COVERS AND COMMON PROCEDURES ...........................................3-3
3.3.1 FRONT DOOR .............................................................................3-3
3.3.2 DUPLEX UNIT..............................................................................3-3
3.3.3 RIGHT UPPER COVER ...............................................................3-4
3.3.4 BY-PASS TRAY UNIT ..................................................................3-5
3.3.5 REAR COVERS ...........................................................................3-5
3.3.6 LEFT COVERS.............................................................................3-6
3.4 OPERATION PANEL.............................................................................3-7
3.5 PAPER OUTPUT TRAY ........................................................................3-8
3.6 LASER UNIT .......................................................................................3-10
3.6.1 CAUTION DECAL LOCATIONS.................................................3-10
3.6.2 LASER UNIT REMOVAL............................................................3-10
3.6.3 POLYGON MIRROR MOTOR ....................................................3-12
3.6.4 LASER SYNCHRONIZATION DETECTOR ...............................3-13
3.6.5 LD UNIT .....................................................................................3-13
3.7 PCDU ..................................................................................................3-16
3.7.1 PHOTOCONDUCTOR CLEANING/DEVELOPMENT UNIT.......3-16
3.7.2 DRUM.........................................................................................3-17
3.7.3 PICK-OFF PAWLS .....................................................................3-19
3.7.4 CHARGE ROLLER AND CLEANING ROLLER..........................3-20
3.7.5 DRUM CLEANING BLADE.........................................................3-21
3.7.6 ID SENSOR................................................................................3-22
3.8 DEVELOPMENT .................................................................................3-23
3.8.1 DEVELOPMENT UNIT ...............................................................3-23
3.8.2 DEVELOPMENT FILTER ...........................................................3-24
3.8.3 DEVELOPMENT ROLLER .........................................................3-24
3.8.4 DEVELOPER .............................................................................3-25
3.8.5 TD SENSOR ..............................................................................3-27
3.9 TRANSFER UNIT................................................................................3-28
3.9.1 TRANSFER BELT UNIT.............................................................3-28
3.9.2 TRANSFER BELT ......................................................................3-29
3.9.3 TRANSFER BELT CLEANING BLADE AND TONER OVERFLOW
SENSOR .............................................................................................3-30
3.10 PAPER FEED..................................................................................3-31
3.10.1 PICK-UP, SEPARATION, AND FEED ROLLERS ....................3-31
G147 ii SM