Olivetti d-Color MF4003 User Manual

L TROUBLESHOOTING > 16. IMAGE QUALITY PROBLEM
L-143
d-Color MF4003/MF3303
1-color troubleshooting procedure
Step Section Check item for the faulty color Result Action for the faulty color
1 Write section Dirt or foreign matter on the dust-proof glass of the PH. YES Clean the PH window.
2 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.
3 Photoconductor section Dirt, scratches, or foreign matter on the photoconductor. YES • Clean.
• Replace the imaging unit.
4 Photoconductor section There is a positive contact between the electrostatic
charger application terminals and the high voltage unit
connection terminals (Y: C4, M: C3, C: C2, K: C1).
NO Clean or correct the terminal.
5 Developing section Toner bristles not even on the developing roller, resulting
in a void area.
YES Replace the imaging unit.
6 1st transfer section There is a positive contact between the transfer belt
application terminals and the high voltage unit
connection terminals (T1).
NO Clean or correct the terminal.
7 Connector connection Faulty connector connection the high voltage unit (CN1)
and base board (CN4E).
YES Reconnect the connector.
8 Service Mode -> Initialize
+ Image Stabilization
Select [Service Mode] -> [Imaging Process Adjustment] -
> [Stabilizer] -> [Initialize + Image Stabilization] and
[Gradation Adjust], and the image trouble is eliminated.
YES Readjust.
NO • Replace the imaging unit.
• Replace the PH unit.
• Replace the high voltage unit.
4-color troubleshooting procedure
Step Section Check item Result Action
1 Transfer belt unit Dirt, scratches, or foreign matter on the transfer belt. YES • Clean.
• Replace the transfer belt unit.
2 2nd transfer section Dirt or foreign matter on the 2nd transfer roller. YES • Remove the foreign matter.
• Replace the transfer roller
unit.
3 Paper path There is dirty or foreign matter on paper path. YES Check and clean the paper path
including the duplex section.
4 Connector connection Faulty connector connection the high voltage unit (CN1)
and base board (CN4E).
YES Reconnect the connector.
5 Service Mode -> Initialize
+ Image Stabilization
Select [Service Mode] -> [Imaging Process Adjustment] -
> [Stabilizer] -> [Initialize + Image Stabilization] and
[Gradation Adjust], and the image trouble is eliminated.
YES Readjust.
NO Replace the high voltage unit.
16.3.12Color spot
Typical faulty images
The arrow in the exemplary image troubles indicates the paper feeding direction.
AA
AA
Initial 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 IDC sensor IDC sensor is dirty. YES Clean.
3 Service Mode ->
Stabilizer
Select [Service Mode] -> [Imaging Process Adjustment] -
> [Stabilizer] -> [Stabilization Only] and the image
trouble is eliminated.
NO Go to the next step.
4 Service Mode ->
Gradation Adjust
Select [Service Mode] -> [Imaging Process Adjustment] -
> [Gradation Adjust] and the image trouble is eliminated.
NO Go to the next step.
5 Service Mode -> Charge
Voltage Adjustment
Fine colored dots evident on the left-hand side with
respect to the paper feeding direction. Or fine color spots
are evident on a particular portion in the paper.
NO Return the setting value to the
original one and go to the next
step.
Y119930-3
Service Manual

Olivetti d-Color MF4003 Specifications

General

Brand	Olivetti
Model	d-Color MF4003
Category	Copier
Language	English