Ricoh AFICIO A267 Service Manual page 10

6.7.1 BICU BOARD................................................................................. 6-31
6.7.2 I/O BOARD .................................................................................... 6-32
6.7.3 POWER PACK............................................................................... 6-32
6.7.4 MAIN MOTOR................................................................................ 6-33
6.7.5 PSU ............................................................................................... 6-34
6.8 COPY ADJUSTMENTS: PRINTING/SCANNING ................................... 6-35
6.8.1 PRINTING...................................................................................... 6-35
Registration - Leading Edge/Side-to-Side .......................................... 6-35
Blank Margin ...................................................................................... 6-36
Main Scan Magnification .................................................................... 6-36
Parallelogram Image Adjustment ....................................................... 6-37
6.8.2 SCANNING .................................................................................... 6-38
Registration: Platen Mode.................................................................. 6-38
Magnification ...................................................................................... 6-38
Standard White Density Adjustment................................................... 6-39
6.8.3 ADF IMAGE ADJUSTMENT .......................................................... 6-40
Registration ........................................................................................ 6-40
7. TROUBLESHOOTING................................................................. 7-1
7.1 SERVICE CALL CONDITIONS................................................................. 7-1
7.1.1 SUMMARY....................................................................................... 7-1
7.1.2 SC CODE DESCRIPTIONS............................................................. 7-2
SC194: IPU White Level Detection Error ............................................. 7-4
SC546: Unstable fusing temperature ................................................... 7-9
SC620: Communication error between IOB and ADF ........................ 7-10
SC760: ADF gate abnormal ............................................................... 7-14
SC900: Electrical total counter error .................................................. 7-14
SC901: Mechanical Total Counter ..................................................... 7-14
SC921: EMB (Copier feature expander) hardware error .................... 7-15
SC980: Program loading error ........................................................... 7-15
SC990: Communication error between BICU and IOB....................... 7-15
SC999: Program version error ........................................................... 7-15
7.2 PAPER FEED TROUBLESHOOTING .................................................... 7-16
7.3 SKEWED IMAGE.................................................................................... 7-17
7.4 TONER DENSITY................................................................................... 7-18
7.4.1 ADJUST THE TONER DENSITY CONTROL ................................ 7-18
If the toner density is too low.............................................................. 7-18
If the toner density is too high ............................................................ 7-18
7.4.2 DIRTY BACKGROUND ................................................................. 7-18
7.5 ELECTRICAL COMPONENT DEFECTS................................................ 7-19
7.5.1 SENSORS ..................................................................................... 7-19
7.5.2 SWITCHES .................................................................................... 7-21
7.6 BLOWN FUSE CONDITIONS................................................................. 7-22
vii