Ricoh G147 Service Manual page 15

3.10.2 LOWER RIGHT COVER ..........................................................3-31
3.10.3 RELAY/UPPER PAPER FEED AND LOWER PAPER FEED
CLUTCHES .........................................................................................3-32
3.10.4 UPPER PAPER FEED UNIT FOR TRAY 1 ..............................3-33
3.10.5 LOWER PAPER FEED UNIT FOR TRAY 2 .............................3-34
3.10.6 PAPER END/PAPER HEIGHT/RELAY SENSORS ..................3-35
3.10.7 REGISTRATION SENSOR ......................................................3-35
3.10.8 TRAY LIFT MOTOR .................................................................3-38
3.10.9 FEED/DEVELOPMENT MOTOR..............................................3-39
3.10.10 IDLE ROLLER DUST BLADE .................................................3-40
3.10.11 REGISTRATION ROLLER DUST BLADE ..............................3-40
3.11 FUSING UNIT..................................................................................3-42
3.11.1 FUSING UNIT REMOVAL ........................................................3-42
3.11.2 FUSING UNIT EXIT GUIDE .....................................................3-43
3.11.3 HOT ROLLER STRIPPERS .....................................................3-43
3.11.4 FUSING LAMPS.......................................................................3-44
3.11.5 THERMISTORS AND THERMOSTATS...................................3-45
3.11.6 HOT ROLLER/PRESSURE ROLLER.......................................3-46
3.12 BY-PASS TRAY ..............................................................................3-49
3.12.1 COVERS ..................................................................................3-49
3.12.2 BY-PASS PAPER FEED AND PICK-UP ROLLER REPLACEMENT
.................................................................................................3-49
3.12.3 BY-PASS SEPARATION ROLLER...........................................3-50
3.12.4 PAPER END SENSOR, PICK-UP SOLENOID.........................3-51
3.12.5 PAPER SIZE SENSOR BOARD ..............................................3-52
3.12.6 BY-PASS TABLE REMOVAL ...................................................3-53
3.12.7 PAPER FEED CLUTCH ...........................................................3-54
3.13 DUPLEX UNIT.................................................................................3-55
3.13.1 DUPLEX COVER REMOVAL...................................................3-55
3.13.2 DUPLEX ENTRANCE SENSOR ..............................................3-55
3.13.3 DUPLEX EXIT SENSOR ..........................................................3-56
3.14 DRIVE MECHANISMS ....................................................................3-57
3.14.1 REGISTRATION CLUTCH, TRANSFER BELT CONTACT
CLUTCH ..............................................................................................3-57
3.14.2 MAIN MOTOR ..........................................................................3-59
3.14.3 FUSING/EXIT MOTOR.............................................................3-60
3.14.4 TONER SUPPLY MOTOR .......................................................3-61
3.15 BOARDS .........................................................................................3-63
3.15.1 NVRAM ....................................................................................3-63
3.15.2 HVPS........................................................................................3-67
3.15.3 IOB ...........................................................................................3-67
3.15.4 BICU BOARD ...........................................................................3-68
3.15.5 PSU ..........................................................................................3-69
3.15.6 HDD AND CONTROLLER BOARD ..........................................3-69
3.16 PARALLELOGRAM IMAGE ADJUSTMENT ...................................3-71
SM iii G147