Konica Minolta bizhub C658 Service Manual page 1663

bizhub C658/C558/C458/C368/C308/C258
(4) Scanner troubleshooting procedure
Step Section
1 When original glass is
being used: Sub Scan
Zoom Adj.
2 When DF is being used:
1st side: Feed Zoom
3 When DF-704 or dual
scan document feeder is
being used: 2nd side: FD-
Mag. Adj. (B)
4 When DF-704 or dual
scan document feeder is
being used: 2nd side:
Main Scanning Direction
Zoom
16.3.23 Distorted image
(1) Typical faulty images
The arrow in the exemplary image troubles indicates the paper feeding direction.
(2) Troubleshooting procedure
Step Section
1 Installation state
2 Original Type
3 When original glass is
being used
4 • When DF is being
used: Distortion on
1st side
• When DF-629 is
being used:
Distortion on 2nd
side
5 DF-704 or dual scan
document feeder is being
used: Distortion on 2nd
side
16.3.24 ACS malfunction
(1) Typical faulty images
The arrow in the exemplary image troubles indicates the paper feeding direction.
[1] [2]
[1] Color original section
Check item
Select [Service Mode] -> [Machine] -> [Scan Area] ->
[Sub Scan Zoom Adj.] and make the necessary
adjustment, and the image trouble is eliminated.
Select [Service Mode] -> [ADF] ->
make the necessary adjustment, and the image trouble
is eliminated.
Select [Service Mode] -> [ADF] ->
and make the necessary adjustment, and the image
trouble is eliminated.
Select [Service Mode] -> [ADF] ->
Direction Zoom] and make the necessary adjustment,
and the image trouble is eliminated.
Check item
Machine not installed on a flat site.
Select [Copy setting] -> [Original Type] and change the
setting, and the image trouble is eliminated.
Original glass not installed properly.
CCD board not installed properly.
CIS module not installed properly.
K-335
K TROUBLESHOOTING > 16. IMAGE QUALITY PROBLEM
Result
YES
NO
[Feed Zoom] and YES
NO
[FD-Mag. Adj. (B)] NO
[Main Scanning YES
NO
Result
YES
YES
YES
NO
YES
NO
YES
NO
[2] Black and white original section
Action
Readjust.
Replace the CCD unit. (bizhub
C368/C308/C258 / bizhub C658/
C558/C458)
Readjust.
Replace the CCD unit. (bizhub
C368/C308/C258 / bizhub C658/
C558/C458)
Go to the next step.
Readjust.
Replace the CIS module. (bizhub
C368/C308/C258 / bizhub C658/
C558/C458)
Action
Install the machine horizontally.
Correct the setting.
Corrected to the correct position.
Replace the CCD unit. (bizhub
C368/C308/C258 / bizhub C658/
C558/C458)
Corrected to the correct position.
Replace the CCD unit. (bizhub
C368/C308/C258 / bizhub C658/
C558/C458)
Corrected to the correct position.
Replace the CIS module. (bizhub
C368/C308/C258 / bizhub C658/
C558/C458)