Konica Minolta bizhub C200 Service Manual page 429

19. Image quality problem
19.3.13 Scanner system: abnormal image
A. Typical faulty images
B. Troubleshooting procedure
Step Section
Cable connecting
1 scanner and
printer
BCRU board
2
(BCRUB)
MFBU board
3
(MFBUB)
Test Mode
4 [Service Mode]
BCRU board
5 (BCRUB)
Printer control
board (PRCB)
6
PH relay board
(REYB/PH)
MFBU board
7
(MFBUB)
388
ABCDE
ABCDE
ABCDE
ABCDE
ABCDE
Check item
Connector is connected properly
with no pins bent.
Connectors on the BCRU board
are connected properly.
Data on previous page is mixed
with data on current page.
The problem is eliminated as
checked with the image on a test
pattern produced.
The problem is eliminated after the
interface connection cable has
been changed.
Check the connection of connec-
tors, harness, and flat cables
between PRCB and REYB/PH, and
correct if necessary.
The problem has been eliminated
through the checks of steps up to 6.
Field Service Ver. 2.0 Dec. 2008
ABCDE
Data on
ABCDE
previous page
ABCDE
Data on
AA
current page
Result Action
NO Reconnect.
NO Reconnect.
NO Reinstall the memory.
NO Change interface connection
cable.
NO Change BCRUB.
NO Change printer control board.
Change PH relay board.
NO Change MFBUB.
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