Ricoh A-C4 - Page 7

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3.10.2 LASER UNIT ................................................................................3-23
3.10.3 POLYGON MIRROR MOTOR ......................................................3-25
3.10.4 LASER SYNCHRONIZATION DETECTOR..................................3-26
3.10.5 LD UNIT........................................................................................3-27
Laser beam pitch adjustment..............................................................3-28
3.11 PHOTOCONDUCTOR UNIT (PCU) ......................................................3-30
3.11.1 PCU ..............................................................................................3-30
3.11.2 DRUM...........................................................................................3-31
3.11.3 PICK-OFF PAWLS .......................................................................3-33
Pick-off pawl position adjustment........................................................3-33
3.11.4 CHARGE ROLLER AND CLEANING ROLLER............................3-34
3.11.5 DRUM CLEANING BLADE 2........................................................3-35
3.11.6 DRUM CLEANING BLADE 1........................................................3-36
3.11.7 ID SENSOR..................................................................................3-37
3.12 DEVELOPMENT ...................................................................................3-38
3.12.1 DEVELOPMENT UNIT .................................................................3-38
3.12.2 DEVELOPMENT FILTER .............................................................3-39
3.12.3 DEVELOPMENT ROLLER ...........................................................3-40
3.12.4 DEVELOPER................................................................................3-41
3.12.5 TD SENSOR.................................................................................3-43
3.13 TRANSFER UNIT..................................................................................3-44
3.13.1 TRANSFER BELT UNIT ...............................................................3-44
3.13.2 TRANSFER BELT ........................................................................3-45
3.13.3 TRANSFER BELT CLEANING BLADE AND TONER
OVERFLOW SENSOR .................................................................3-46
3.14 PAPER FEED........................................................................................3-47
3.14.1 PICK-UP, SEPARATION, AND FEED ROLLERS ........................3-47
3.14.2 LOWER RIGHT COVER...............................................................3-48
3.14.3 RELAY/UPPER PAPER FEED AND LOWER
PAPER FEED CLUTCHES........................................................3-49
3.14.4 UPPER PAPER FEED UNIT FOR TRAY 1 ..................................3-50
3.14.5 LOWER PAPER FEED UNIT FOR TRAY 2 .................................3-51
3.14.6 PAPER END/PAPER HEIGHT/RELAY SENSORS ......................3-52
3.14.7 REGISTRATION SENSOR...........................................................3-53
3.14.8 TRAY LIFT MOTOR .....................................................................3-55
3.14.9 FEED/DEVELOPMENT MOTOR..................................................3-56
3.14.10 IDLE ROLLER DUST BLADE.....................................................3-57
3.14.11 REGISTRATION ROLLER DUST BLADE ..................................3-58
3.15 FUSING UNIT........................................................................................3-59
3.15.1 FUSING UNIT REMOVAL ............................................................3-59
3.15.2 FUSING UNIT EXIT GUIDE .........................................................3-60
3.15.3 HOT ROLLER STRIPPERS .........................................................3-61
3.15.4 FUSING LAMPS...........................................................................3-62
3.15.5 THERMISTORS AND THERMOSTATS .......................................3-64
3.15.6 HOT ROLLER/PRESSURE ROLLER...........................................3-65
3.15.7 FUSING UNIT SIDE FAN .............................................................3-67
3.15.8 FUSING UNIT CORNER FAN ......................................................3-69
3.16 BY-PASS TRAY ....................................................................................3-70
3.16.1 COVER REPLACEMENT .............................................................3-70