17. Malfunction code Field Service Ver. 1.0 Jun. 2008
314
Troubleshooting
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
d-Color MF201