Ricoh M160 Service Manual page 10

4.12.5 NVRAM ON THE CONTROLLER BOARD ....................................................... 4-60
4.12.6 BICU .................................................................................................................. 4-61
4.12.7 EEPROM ON THE BICU ................................................................................... 4-62
4.12.8 HDD ................................................................................................................... 4-63
Before HDD Replacement ..................................................................................... 4-63
Replacement Procedure........................................................................................ 4-63
After HDD Replacement ........................................................................................ 4-63
Reinstallation ......................................................................................................... 4-64
4.12.9 TONER END SENSOR ..................................................................................... 4-64
4.12.10 HVPS .......................................................................................................... 4-65
4.12.11 HVPS WITH BRACKET .............................................................................. 4-66
4.12.12 FUSING FAN............................................................................................... 4-67
4.12.13 PCDU COOLING FAN ................................................................................ 4-68
4.12.14 PSU COOLING FAN ................................................................................... 4-68
4.12.15 DC SWITCH ................................................................................................ 4-70
4.12.16 FRONT DOOR INTERLOCK SWITCH ....................................................... 4-70
4.12.17 REAR DOOR INTERLOCK SWITCH ......................................................... 4-71
4.12.18 DIMM ........................................................................................................... 4-71
4.12.19 TEMP HUMID SENSOR ............................................................................. 4-72
4.12.20 REAR COVER SWITCH ............................................................................. 4-72
4.13 ARDF ..................................................................................................................... 4-73
4.13.1 ARDF UNIT ....................................................................................................... 4-73
4.13.2 ARDF FRONT COVER ..................................................................................... 4-75
4.13.3 ARDF REAR COVER ........................................................................................ 4-76
4.13.4 ARDF TOP COVER ........................................................................................... 4-77
4.13.5 ARDF ORIGINAL TRAY .................................................................................... 4-78
4.13.6 ORIGINAL FEED UNIT ..................................................................................... 4-78
4.13.7 ARDF FRICTION PAD ...................................................................................... 4-79
4.13.8 ARDF DRIVE MOTOR ...................................................................................... 4-79
4.13.9 ARDF TOP COVER SENSOR .......................................................................... 4-82
4.13.10 ARDF ORIGINAL SET SENSOR ................................................................ 4-82
4.13.11 ARDF REGISTRATION SENSOR .............................................................. 4-83
4.13.12 DFRB .......................................................................................................... 4-84
4.13.13 PICK-UP SOLENOID .................................................................................. 4-85
4.13.14 JUNCTION GATE SOLENOID ................................................................... 4-85
4.14 SCANNER ............................................................................................................. 4-87
4.14.1 SCANNER UNIT (WITH ARDF) ........................................................................ 4-87
4.14.2 SCANNER UPPER COVER.............................................................................. 4-90
4.14.3 ARDF OPEN/CLOSED SENSOR ..................................................................... 4-90
M160/M161 vi SM