Olivetti d-Color MF4003 Service Manual page 550

d-Color MF4003/MF3303
Step Section
3 Original direction
4 Service Mode ->
Stabilizer
5 Service Mode ->
Gradation Adjust
6 Image check
Engine troubleshooting procedure
Step Section
1 Service Mode -> Paper
Feed Direction Adj.
2 Service Mode -> Initialize
+ Image Stabilization
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 is being used:
2nd side: FD-Mag. Adj.
(B)
4 When DF is being used:
2nd side: Main Scanning
Direction Zoom
16.3.22 Distorted image
Typical faulty images
The arrow in the exemplary image troubles indicates the paper feeding direction.
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
5 When DF is being used:
Distortion on 2nd side
Service Manual
Check item
Change the direction in which the original is placed. This
eliminates moire.
Select [Service Mode] -> [Imaging Process Adjustment] -
> [Stabilizer] -> [Stabilization Only] and the image
trouble is eliminated.
Select [Service Mode] -> [Imaging Process Adjustment] -
> [Gradation Adjust] and the image trouble is eliminated.
• 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.
Check item
Select [Service Mode] -> [Machine] -> [Printer Area] ->
[Paper Feed Direction Adj.] and make the necessary
adjustment, and the image trouble is eliminated.
Select [Service Mode] -> [Imaging Process Adjustment] -
> [Stabilizer] -> [Initialize + Image Stabilization] and
[Gradation Adjust], and the image trouble is eliminated.
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] -> [Feed Zoom] and
make the necessary adjustment, and the image trouble
is eliminated.
Select [Service Mode] -> [ADF] -> [FD-Mag. Adj. (B)]
and make the necessary adjustment, and the image
trouble is eliminated.
Select [Service Mode] -> [ADF] -> [Main Scanning
Direction Zoom] and make the necessary adjustment,
and the image trouble is eliminated.
Check item
Machine not installed on a flat site.
Select [Copy] -> [Original Type] and change the setting,
and the image trouble is eliminated.
Original glass not installed properly.
CIS module not installed properly.
DF CIS module not installed properly.
L-152
L TROUBLESHOOTING > 16. IMAGE QUALITY PROBLEM
Result
YES Change the original direction.
NO Go to the next step.
NO Go to the next step.
YES Go to engine troubleshooting
procedure.
NO Go to scanner troubleshooting
procedure.
Result
NO Go to the next step.
YES Readjust.
NO •
•
Result
YES Readjust.
NO Replace the CIS module.
YES Readjust.
NO Replace the CIS module.
NO Go to the next step.
YES Readjust.
NO Replace the DF CIS module assy.
Result
YES Install the machine horizontally.
YES Correct the setting.
YES Corrected to the correct position.
NO Replace the CIS module.
YES Corrected to the correct position.
NO Replace the CIS module.
YES Corrected to the correct position.
NO Replace the DF CIS module assy.
Action
Action
Replace the PH unit.
Replace the base board.
Action
Action
Y119930-3