Ricoh B230 Service Manual page 7

3.12.6 BY-PASS PAPER SIZE DETECTION SWITCH....................... 3-92
3.12.7 BY-PASS PAPER FEED UNIT ................................................ 3-93
3.13 DUPLEX UNIT ................................................................................ 3-95
3.13.1 DUPLEX UNIT ......................................................................... 3-95
3.13.2 DUPLEX TRANSPORT MOTOR ............................................. 3-95
3.14 ELECTRICAL COMPONENTS ....................................................... 3-97
3.14.1 CONTROLLER UNIT ............................................................... 3-97
3.14.2 CONTROLLER BOX COVER .................................................. 3-97
3.14.3 CONTROLLER BOX................................................................ 3-98
3.14.4 BICU ...................................................................................... 3-100
3.14.5 IOB......................................................................................... 3-101
3.14.6 PSU ....................................................................................... 3-101
3.14.7 SIO (SCANNER IN/OUT) BOARD ......................................... 3-102
3.14.8 HIGH VOLTAGE SUPPLY BOARD ....................................... 3-103
3.14.9 HIGH VOLTAGE SUPPLY BOARD BRACKET ..................... 3-104
3.14.10 CONTROLLER BOARD ..................................................... 3-105
3.14.11 HDD ................................................................................... 3-106
3.14.12 NVRAM REPLACEMENT PROCEDURE........................... 3-107
TROUBLESHOOTING
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 .......................... 4-2
4.1.3 LINE POSITION ADJUSTMENT RESULT................................... 4-6
4.2 SCANNER TEST MODE....................................................................... 4-7
4.2.1 VPU TEST MODE........................................................................ 4-7
4.2.2 BICU (IPU) TEST MODE ............................................................. 4-7
4.3 SERVICE CALL CONDITIONS ............................................................. 4-9
4.3.1 SUMMARY................................................................................... 4-9
4.4 SC TABLE........................................................................................... 4-13
4.5 TROUBLESHOOTING GUIDE............................................................ 4-97
4.5.1 IMAGE QUALITY ....................................................................... 4-97
4.5.2 LINE POSITION ADJUSTMENT.............................................. 4-100
B230/B237/D042 SM