Olivetti d-Color MF4003 Service Manual page 536

d-Color MF4003/MF3303
Engine troubleshooting procedure
Step Section
1 Write section
2 Charging section
3 IDC sensor
4 Service Mode ->
Stabilizer
5 Service Mode ->
Gradation Adjust
6 Service Mode -> Max
Image Density Adj
7 Service Mode -> Initialize
+ Image Stabilization
Scanner troubleshooting procedure
Step Section
1 When DF is being used:
2nd side
16.3.8 Color reproducibility error
Typical faulty images
The arrow in the exemplary image troubles indicates the paper feeding direction.
Troubleshooting procedure
Step Section
1 Damp paper
2 Paper Setting
3 Expert Adjustment -> PS
Designer Settings
4 Image check
5 Write section
6 Charging section
Service Manual
Check item for the faulty color
Dirt or foreign matter on the dust-proof glass of the PH of
the color which is responsible for the abnormal image.
Foreign matter on charging roller of the color which is
responsible for the abnormal image.
IDC sensor is dirty.
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] -> [Imaging Process Adjustment] -
> [Max Image Density 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
Shading correction surface of DF is dirty.
Check item
Paper is damp.
The paper to be used for printing does not match the
paper type and size of paper setting selected on the
machine.
Select [Utility] -> [Expert Adjustment] -> [PS Designer
Settings] and change the setting, and the image trouble
is eliminated.
• Select [Service Mode] -> [Test Mode] -> [8 Color
Solid Pattern]. Select "SINGLE", "HYPER", "Error
diffusion", and "1-Sided", enter "64" for Density, and
load tray 2 with A4 paper. This runs a print cycle of
8 colors on one sheet of paper.
• Check the image after printing and the abnormal
image is evident.
Dirt or foreign matter on the dust-proof glass of the PH.
Foreign matter on charging roller.
L-138
L TROUBLESHOOTING > 16. IMAGE QUALITY PROBLEM
Result
YES Clean the PH window.
YES Lightly wipe the surface clean of
foreign matter using hydro-wipe
(65AA-99##).
Note: Do not apply a strong force
to the surface of the charging
roller, as doing so can damage the
surface.
YES Clean.
NO Go to the next step.
NO Go to the next step.
NO Go to the next step.
YES Readjust.
NO •
•
•
•
Result
YES Clean.
NO Replace the DF CIS module assy.
Result
YES Change paper to one just
unwrapped from its package.
YES Make the paper setting again on
the machine.
NO Go to the next step.
YES Go to the next step.
YES Clean the PH window.
YES Lightly wipe the surface clean of
foreign matter using hydro-wipe
(65AA-99##).
Action
Replace the imaging unit that
is responsible for the
abnormal image.
Replace the PH unit.
Replace the high voltage unit.
Replace the base board.
Action
Action
Y119930-3