Ricoh B264 Service Manual page 15

3.9.1 ARDF................................................................................................3-9
3.9.2 EXPOSURE GLASS.......................................................................3-10
3.9.3 SCANNER EXTERIOR PANELS, OPERATION PANEL ................3-11
3.9.4 LENS BLOCK, SBU ASSEMBLY ...................................................3-12
3.9.5 ORIGINAL SIZE SENSORS ...........................................................3-13
3.9.6 EXPOSURE LAMP .........................................................................3-14
3.9.7 SCANNER HP SENSOR/PLATEN COVER SENSOR ...................3-15
3.9.8 SCANNER MOTOR........................................................................3-16
3.9.9 LAMP STABILIZER AND SCANNER MOTOR DRIVE BOARD .....3-17
3.9.10 SCANNER WIRE..........................................................................3-18
3.10 LASER UNIT .........................................................................................3-22
3.10.1 CAUTION DECAL LOCATIONS ...................................................3-22
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 RIGHT LOWER 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
SM iii B264/B265