Ricoh B039 Service Manual page 14

3.11.2 DUPLEX ENTRANCE SENSOR .................................................. 3-42
3.11.3 DUPLEX INVERTER SENSOR.................................................... 3-42
3.11.4 DUPLEX TRANSPORT MOTOR ................................................. 3-43
3.11.5 DUPLEX INVERTER MOTOR ..................................................... 3-43
3.11.6 DUPLEX CONTROL BOARD....................................................... 3-43
3.12 OTHER REPLACEMENTS ................................................................... 3-44
3.12.1 QUENCHING LAMP..................................................................... 3-44
3.12.2 HIGH-VOLTAGE POWER SUPPLY BOARD............................... 3-44
3.12.3 IMB (MEMORY BOARD).............................................................. 3-45
3.12.4 BICU (BASE-ENGINE IMAGE CONTROL UNIT) ........................ 3-45
3.12.5 IOB (I/O BOARD) ......................................................................... 3-46
3.12.6 MAIN MOTOR.............................................................................. 3-46
3.12.7 REAR EXHAUST FAN ................................................................. 3-46
3.12.8 LEFT EXHAUST FAN .................................................................. 3-47
3.12.9 PSU (POWER SUPPLY UNIT) .................................................... 3-47
3.12.10 GEARBOX ................................................................................. 3-48
Replacement Procedure..................................................................... 3-48
Gear Arrangement Within the Gearbox .............................................. 3-49
3.13 COPY ADJUSTMENTS: PRINTING/SCANNING.................................. 3-50
3.13.1 PRINTING .................................................................................... 3-50
Registration - Leading Edge/Side-to-Side .......................................... 3-50
Blank Margin ...................................................................................... 3-51
Main Scan Magnification .................................................................... 3-51
3.13.2 SCANNING .................................................................................. 3-52
Registration: Platen Mode .................................................................. 3-52
Magnification ...................................................................................... 3-53
Standard White Density Adjustment................................................... 3-54
3.13.3 ADF IMAGE ADJUSTMENT ........................................................ 3-55
Registration and Blank Margin ........................................................... 3-55
Sub-scan Magnification ...................................................................... 3-55
TROUBLESHOOTING
4 TROUBLESHOOTING ................................................................. 4-1
4.1 SERVICE CALL CONDITIONS ................................................................. 4-1
4.1.1 SUMMARY....................................................................................... 4-1
4.1.2 SC CODE DESCRIPTIONS ............................................................. 4-2
4.2 ELECTRICAL COMPONENT DEFECTS .................................................. 4-8
4.2.1 SENSORS........................................................................................ 4-8
4.2.2 SWITCHES ...................................................................................... 4-9
4.3 BLOWN FUSE CONDITIONS ................................................................. 4-10
4.4 LED DISPLAY ......................................................................................... 4-10
4.4.1 BICU............................................................................................... 4-10
4.4.2 IOB ................................................................................................. 4-10
4.5 FIRMWARE MODIFICATION HISTORY..........................................4-11
SERVICE TABLES
5 SERVICE TABLES....................................................................... 5-1
B039/B040/B043 iv
Rev. 03/2002
SM