Ricoh D072 Service Manual page 17

4.7.1 EXHAUST FAN............................................................................... 4-25
4.7.2 MAIN MOTOR................................................................................. 4-26
4.8 PAPER FEED .......................................................................................... 4-27
4.8.1 PAPER FEED ROLLER AND FRICTION PAD ............................... 4-27
4.8.2 PAPER END SENSOR ................................................................... 4-28
4.8.3 REGISTRATION SENSOR ............................................................. 4-29
4.8.4 BYPASS PAPER END SENSOR.................................................... 4-30
4.8.5 BYPASS FEED ROLLER................................................................ 4-31
4.8.6 BYPASS FEED CLUTCH AND FRICTION PAD............................. 4-32
4.8.7 PAPER FEED AND REGISTRATION CLUTCHES......................... 4-33
4.9 IMAGE TRANSFER ................................................................................. 4-35
4.9.1 TRANSFER ROLLER ..................................................................... 4-35
4.9.2 ID SENSOR AND DUPLEX ROLLER ............................................. 4-36
4.9.3 DISCHARGE PLATE ...................................................................... 4-37
4.10 BICU AND CONTROLLER BOARD ................................................... 4-38
4.10.1 BICU ........................................................................................... 4-39
Preparation......................................................................................... 4-39
Procedure........................................................................................... 4-39
4.10.2 CONTROLLER BOARD (F/SPF MODELS: D068/D069)............ 4-41
Preparation:........................................................................................ 4-41
Procedure........................................................................................... 4-41
When replacing the NVRAM on the controller board.......................... 4-43
When Installing the Printer/Scanner Unit (D468)................................ 4-43
4.11 OTHER REPLACEMENTS................................................................. 4-44
4.11.1 DUPLEX MOTOR....................................................................... 4-44
4.11.2 HIGH-VOLTAGE POWER SUPPLY BOARD ............................. 4-45
4.11.3 PSU ............................................................................................ 4-46
4.11.4 CONTACT-RELEASE SOLENOID ............................................. 4-47
4.11.5 TONER SUPPLY CLUTCH ........................................................ 4-48
4.11.6 FCU (FOR D068/D069) .............................................................. 4-49
Lithium Batteries................................................................................. 4-49
Procedure........................................................................................... 4-49
4.12 LASER UNIT ...................................................................................... 4-51
4.12.1 LOCATION OF THE CAUTION DECAL ..................................... 4-51
4.12.2 LASER UNIT .............................................................................. 4-52
4.12.3 LD UNIT AND POLYGON MIRROR MOTOR............................. 4-53
SM v D067/D068/D069/D072