Olivetti d-Color MF4003 User Manual

d-Color MF4003/MF3303
L TROUBLESHOOTING > 16. IMAGE QUALITY PROBLEM
L-148
Step Section Check item Result Action
3 Service Mode ->
Gradation Adjust
Select [Service Mode] -> [Imaging Process Adjustment] -
> [Gradation Adjust] and the image trouble is eliminated.
NO Go to the next step.
4 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 occurs only with one color.
YES Go to the 1-color troubleshooting
procedure.
NO Go to the 4-color troubleshooting
procedure.
1-color troubleshooting procedure
Step Section Check item for the faulty color Result Action for the faulty color
1 Uneven pitch at 94 mm
interval
Dirt, scratches, or foreign matter on the photoconductor. YES • Clean.
• Replace the imaging unit.
2 Uneven pitch at 50 mm
interval
Dirt, scratches, or foreign matter on the developing
roller.
YES • Clean.
• Replace the imaging unit.
3 Write section Dirt or foreign matter on the dust-proof glass of the PH. YES Clean the PH window.
4 Charging section Foreign matter on charging roller. 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.
5 Connector connection Faulty connector connection the high voltage unit (CN1)
and base board (CN4E).
YES Reconnect the connector.
NO • Replace the high voltage unit.
• Replace the base board.
4-color troubleshooting procedure
Step Section Check item Result Action
1 Uneven pitch Dirt, scratches, or foreign matter on the transfer belt. YES • Clean.
• Replace the transfer belt unit.
2 Uneven pitch at 59 mm
interval
Dirt or foreign matter on the 2nd transfer roller. YES • Remove the foreign matter.
• Replace the transfer roller
unit.
3 Uneven pitch at 259 mm
interval
Dirt, scratches, or foreign matter on the fusing belt. YES • Clean.
• Replace the fusing unit.
4 Uneven pitch at 100 mm
interval
Dirt, scratches, or foreign matter on the fusing pressure
roller.
YES • Clean.
• Replace the fusing unit.
5 Paper path There is dirty or foreign matter on paper path. YES Check or clean the paper path
including the duplex section.
NO • Replace the transfer belt unit.
• Replace the high voltage unit.
• Replace the base board.
16.3.17Uneven gloss, Rough gloss
Typical faulty images
The arrow in the exemplary image troubles indicates the paper feeding direction.
Troubleshooting procedure
Step Section Check item Result Action
1 Paper Setting The paper to be used for printing does not match the
paper type and size of paper setting selected on the
machine.
YES Make the paper setting again on
the machine.
2 Image check • Select [Service Mode] -> [Test Mode] -> [Halftone
Pattern].
Select "SINGLE", "HYPER", "Error diffusion", "1-
YES Go to the next step.
Service Manual
Y119930-3

Olivetti d-Color MF4003 Specifications

General

Brand	Olivetti
Model	d-Color MF4003
Category	Copier
Language	English