d-Color MF4003/MF3303
L TROUBLESHOOTING > 16. IMAGE QUALITY PROBLEM
L-152
Step
Section
Check item
Result
Action
3
Original direction
Change the direction in which the original is placed. This
eliminates moire.
YES
Change the original direction.
4
Service Mode ->
Stabilizer
Select [Service Mode] -> [Imaging Process Adjustment] -
> [Stabilizer] -> [Stabilization Only] and the image
trouble is eliminated.
NO
Go to the next step.
5
Service Mode ->
Gradation Adjust
Select [Service Mode] -> [Imaging Process Adjustment] -
> [Gradation Adjust] and the image trouble is eliminated.
NO
Go to the next step.
6
Image check
• Select [Service Mode] -> [Test Mode] -> [Halftone
Pattern].
Select "SINGLE", "HYPER", "Error diffusion", "1-
Sided", "CMYK", and "Full Bleed", enter "64" for
Density, and load tray 2 with A4 paper. Press the
start key. This runs a print cycle for C, M, Y, and K
in that order.
• Check the image after printing and the abnormal
image is evident.
YES
Go to engine troubleshooting
procedure.
NO
Go to scanner troubleshooting
procedure.
Engine troubleshooting procedure
Step
Section
Check item
Result
Action
1
Service Mode -> Paper
Feed Direction Adj.
Select [Service Mode] -> [Machine] -> [Printer Area] ->
[Paper Feed Direction Adj.] and make the necessary
adjustment, and the image trouble is eliminated.
NO
Go to the next step.
2
Service Mode -> Initialize
+ Image Stabilization
Select [Service Mode] -> [Imaging Process Adjustment] -
> [Stabilizer] -> [Init Image Stabilization] and
[Gradation Adjust], and the image trouble is eliminated.
YES
Readjust.
NO
•
•
Scanner troubleshooting procedure
Step
Section
Check item
Result
Action
1
When original glass is
being used: Sub Scan
Zoom Adj.
Select [Service Mode] -> [Machine] -> [Scan Area] ->
[Sub Scan Zoom Adj.] and make the necessary
adjustment, and the image trouble is eliminated.
YES
Readjust.
NO
2
When DF is being used:
1st side: Feed Zoom
Select [Service Mode] -> [ADF] -> [Feed Zoom] and
make the necessary adjustment, and the image trouble
is eliminated.
YES
Readjust.
NO
3
When DF is being used:
2nd side: FD-Mag. Adj.
(B)
Select [Service Mode] -> [ADF] -> [FD-Mag. Adj. (B)]
and make the necessary adjustment, and the image
trouble is eliminated.
NO
Go to the next step.
4
When DF is being used:
2nd side: Main Scanning
Direction Zoom
Select [Service Mode] -> [ADF] -> [Main Scanning
Direction Zoom] and make the necessary adjustment,
and the image trouble is eliminated.
YES
Readjust.
NO
Replace the DF CIS module assy.
16.3.22 Distorted image
Typical faulty images
The arrow in the exemplary image troubles indicates the paper feeding direction.
Troubleshooting procedure
Step
Section
Check item
Result
Action
1
Installation state
Machine not installed on a flat site.
YES
Install the machine horizontally.
2
Original Type
Select [Copy] -> [Original Type] and change the setting,
and the image trouble is eliminated.
YES
Correct the setting.
3
When original glass is
being used
Original glass not installed properly.
YES
Corrected to the correct position.
NO
4
When DF is being used:
Distortion on 1st side
CIS module not installed properly.
YES
Corrected to the correct position.
NO
5
When DF is being used:
Distortion on 2nd side
DF CIS module not installed properly.
YES
Corrected to the correct position.
NO
Replace the DF CIS module assy.
Service Manual
Y119930-3
Summary of Contents for d-Color MF 4003
Page 1: ...Multifunction Digital Copier d Color MF4003 MF3303 Service Manual Version 2 0 Code Y119930 3 ...
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