Olivetti d-Color MF4003 Service Manual page 538

d-Color MF4003/MF3303
Step Section
3 Service Mode -> Initialize
+ Image Stabilization
Scanner troubleshooting procedure
Step Section
1 Original
2 Original Type
3 When DF is being used
4 Scanner guide shaft
5 When original glass is
being used
6 When DF is being used:
Registration Loop Adj.
7 When DF is being used:
Paper path
*: Apply HA-050E to the scanner guide shaft. HA-050E is a product manufactured by SUMICO LUBRICANT CO., LTD.
16.3.10 Foggy background
Typical faulty images
The arrow in the exemplary image troubles indicates the paper feeding direction.
Initial troubleshooting procedure
Step Section
1 Malfunction code
2 Paper Setting
3 Damp paper
4 IDC sensor
5 Service Mode ->
Stabilizer
6 Service Mode ->
Gradation Adjust
7 Service Mode -> Charge
Voltage Adjustment
8 Service Mode -> Image
Background Adj
9 Image check
Service Manual
Check item
Select [Service Mode] -> [Imaging Process Adjustment] -
> [Stabilizer] -> [Initialize + Image Stabilization] and
[Gradation Adjust], and the image trouble is eliminated.
Check item
Original contains incorrect color registration.
Select [Copy setting] -> [Original Type] and change the
setting, and the image trouble is eliminated.
DF does not lie flat.
Foreign matter on scanner guide shaft.
Scanner moves smoothly.
Select [Service Mode] -> [ADF] -> [Registration Loop
Adj.] and make the necessary adjustment, and the
image trouble is eliminated.
There is dirty on paper path or roller of DF.
Check item
The maintenance call mark is displayed on the panel.
The paper to be used for printing does not match the
paper type and size of paper setting selected on the
machine.
Paper is damp.
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.
Fog occurs unevenly on the left-hand side with respect
to the paper feeding direction. Or fog occurs in part of
the paper.
The fog is reduced when [Service Mode] -> [Imaging
Process Adjustment] -> [Charge Voltage Adjustment] are
selected and the setting value is increased.
Select [Service Mode] -> [Imaging Process Adjustment] -
> [Image Background Adj] and [Stabilizer] and the image
trouble is eliminated.
• Select [Service Mode] -> [Test Mode] -> [Lattice
Pattern]. Select "SINGLE", "HYPER", "Error
diffusion", "1-Sided", "CMYK", "600dpi", and
"Normal", enter "20" for CD width, "20" for FD width,
and "255" 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.
L-140
L TROUBLESHOOTING > 16. IMAGE QUALITY PROBLEM
Result
YES Readjust.
NO •
•
Result
YES Change the original.
NO Go to the next step.
YES Replace DF if it is deformed or
hinges are broken.
YES Clean and apply lubricant. *
YES Replace the CIS module.
NO Replace the scanner motor.
YES Readjust.
NO Replace the CIS module.
YES Clean.
NO Replace the DF CIS module assy.
Result
YES Perform the relevant
troubleshooting procedure
corresponding to the malfunction
code.
YES Make the paper setting again on
the machine.
YES Change paper to one just
unwrapped from its package.
YES Clean.
NO Go to the next step.
NO Go to the next step.
NO Return the setting value to the
original one and go to the next
step.
NO Set the fog margin value back to
the original one and go to the next
step.
1 to 3 Go to the 1-color troubleshooting
colors procedure.
4 Go to the 4-color troubleshooting
colors procedure.
None Go to scanner troubleshooting
procedure.
Action
Replace the PH unit.
Replace the base board.
Action
Action
Y119930-3