17. Malfunction code
Field Service Ver. 1.0 Jun. 2008
314
T
roubleshooting
17.5.57
C6751: CCD clamp/gain adjustment failure
17.5.58
CC151: ROM contents error upon start-up
Relevant parts
Exposure unit
CCDU board (CCDUB)
BCRU board (BCRUB)
Step
Action
WIRING DIAGRAM
Control signal
Location (Electri-
cal component)
1
Correct the harness connection between
CCDUB and BCRUB if faulty.
—
—
2
Check for possible extraneous light and
correct as necessary.
—
—
3
Clean the lens, mirrors, CCD surface, and
shading sheet if dirty
—
—
4
Correct reflective mirror of the scanner if
faulty, or change scanner.
—
—
5
Change BCRUB
—
—
6
Change exposure unit
—
—
Step
Action
WIRING DIAGRAM
Control signal
Location (Electri-
cal component)
1
Restart the machine.
—
—
2
Check the ROM version.
—
—
3
Rewrite the firmware.
—
—
4
Change PRCB
—
—
d-Color MF201
Service Manual Y109660-1