Ricoh A-P4 - Page 16

Duplex Exit Sensor....................................................................................................................................129
Drive Mechanisms.........................................................................................................................................130
Registration Clutch, Transfer Belt Contact Clutch....................................................................................130
Main Motor...............................................................................................................................................131
Fusing/Exit Motor.....................................................................................................................................132
Toner Supply Motor..................................................................................................................................134
Boards............................................................................................................................................................136
NVRAM......................................................................................................................................................136
Uploading NVRAM Data (SP5-824).............................................................................................136
Replacing NVRAM...........................................................................................................................137
Downloading NVRAM Data (SP5825)..........................................................................................138
HVPS...........................................................................................................................................................140
IOB.............................................................................................................................................................141
BICU Board................................................................................................................................................142
PSU.............................................................................................................................................................142
HDD and Controller Board.......................................................................................................................143
Parallelogram Image Adjustment.................................................................................................................145
4. Troubleshooting
Service Call Conditions.................................................................................................................................147
SC Code Descriptions...............................................................................................................................147
Electrical Component Defects.......................................................................................................................176
Sensors.......................................................................................................................................................176
Switches.....................................................................................................................................................177
Blown Fuse Conditions (PSU)...................................................................................................................178
BICU LEDs..................................................................................................................................................178
Controller Board Test Points.....................................................................................................................178
5. Service Tables
Service Program Mode Operation..............................................................................................................181
General Notes...........................................................................................................................................181
Entering and Leaving the Service Program Mode..................................................................................181
Printer Controller Service Mode...............................................................................................................182
Controller Service Mode Menus.....................................................................................................182
Bit Switch Programming...................................................................................................................182
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