Field Service Ver. 2.1 Feb. 2012
19.5.99
C6752: ASIC clock input error (front side)
19.5.100 C6753: ASIC clock input error (back side)
Exposure unit
CCD board (CCDB)
Step
1
Correct the harness connection of CCDB if
faulty.
2
Change CCDB
3
PRCB ICP11 conduction check
4
Change PRCB
5
Change MFPB
19.5.101 C6901: DSC board mount failure 1
19.5.102 C6902: DSC board bus check NG1-1
19.5.103 C6903: DSC board bus check NG1-2
DSC board (SC-507)
Step
1
Correct the harness connection of DSC
board if faulty.
2
Change DSC board
3
Change MFPB
19.5.104 C6F01: Scanner sequence trouble 1
MFP board (MFPB)
Step
1
Correct the harness connection between
main body and ADF if faulty.
2
Change REYB/SCAN
3
Change DFCB
4
Change MFPB
Relevant parts
Action
Relevant parts
Action
Relevant parts
Action
Printer control board (PRCB)
MFP board (MFPB)
WIRING DIAGRAM
Control signal
—
—
—
—
—
MFP board (MFPB)
WIRING DIAGRAM
Control signal
—
—
—
DF control board (DFCB)
Scanner relay board (REYB/SCAN)
WIRING DIAGRAM
Control signal
—
—
—
—
19. TROUBLE CODE
Location (Electri-
cal component)
—
—
—
—
—
Location (Electri-
cal component)
—
—
—
Location (Electri-
cal component)
—
—
—
—
661