Ricoh J-P2 Service Manual page 7

3.8 ID SENSORS.......................................................................................... 3-28
3.9 FUSING .................................................................................................. 3-29
3.9.1 FUSING UNIT ................................................................................ 3-29
3.9.2 OIL SUPPLY UNIT AND UPPER COVER ..................................... 3-30
3.9.3 CLEANING UNIT ........................................................................... 3-31
3.9.4 HEATING ROLLER LAMP ............................................................. 3-32
3.9.5 FUSING BELT UNIT ...................................................................... 3-33
3.9.6 HOT ROLLER ................................................................................ 3-34
3.9.7 HEATING ROLLER........................................................................ 3-34
3.9.8 PAPER GUIDE PLATES AND STRIPPER PAWLS....................... 3-35
3.9.9 THERMISTOR AND FUSE ............................................................ 3-36
3.9.10 PRESSURE ROLLER FUSING LAMP......................................... 3-37
3.9.11 PRESSURE ROLLER.................................................................. 3-38
3.9.12 FUSING UNIT FAN...................................................................... 3-40
3.9.13 WASTE OIL BOTTLE .................................................................. 3-41
3.9.14 PAPER EXIT................................................................................ 3-42
3.10 ELECTRICAL COMPONENTS ............................................................. 3-43
3.10.1 MOVING THE CONTROLLER BOX OUT OF THE WAY............. 3-43
3.10.2 MOVING THE HIGH VOLTAGE SUPPLY UNIT - C, B OUT OF THE
WAY 3-43
3.10.3 CONTROLLER AND BCU ........................................................... 3-44
3.10.4 NVRAM REPLACEMENT PROCEDURE .................................... 3-46
NVRAM for BCU ................................................................................ 3-46
NVRAM for Controller ........................................................................ 3-46
NVRAMs for both BCU and Controller ............................................... 3-47
3.10.5 REMOVING THE HIGH VOLTAGE SUPPLY BOARD - C, B....... 3-48
3.10.6 PSU ............................................................................................. 3-48
3.10.7 DRIVER BOARD.......................................................................... 3-49
3.11 DRIVE UNIT ......................................................................................... 3-50
3.11.1 REGISTRATION CLUTCH........................................................... 3-50
3.11.2 DEVELOPMENT CLUTCHES...................................................... 3-50
3.11.3 DEVELOPMENT MOTOR - CMY ................................................ 3-51
3.11.4 DRUM DRIVE MOTOR - CMY AND DRUM DRIVE MOTOR - K. 3-54
3.11.5 DEVELOPMENT DRIVE MOTOR - K .......................................... 3-55
3.12 TONER SUPPLY UNIT......................................................................... 3-57
M Toner Supply Unit .......................................................................... 3-57
C and Y Toner Supply Units............................................................... 3-61
K Toner Supply Unit ........................................................................... 3-62
4. TROUBLESHOOTING................................................................. 4-1
4.1 PROCESS CONTROL ERROR CONDITIONS ........................................ 4-1
4.1.1 DEVELOPER INITIALIZATION RESULT......................................... 4-1
4.1.2 PROCESS CONTROL SELF-CHECK RESULT .............................. 4-3
4.1.3 LINE POSITION ADJUSTMENT RESULT....................................... 4-4
4.2 SERVICE CALL CONDITIONS................................................................. 4-7
4.2.1 SUMMARY....................................................................................... 4-7
SC Classification .................................................................................. 4-7
4.3 SC TABLE ................................................................................................ 4-9
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