Olivetti d-Color MF4003 User Manual

d-Color MF4003/MF3303
L TROUBLESHOOTING > 16. IMAGE QUALITY PROBLEM
L-134
Step Section Check item for the faulty color Result Action for the faulty color
Note: Do not apply a strong force
to the surface of the charging
roller, as doing so can damage the
surface.
4 Photoconductor section Dirt, scratches, or foreign matter on the photoconductor. YES • Clean.
• Replace the imaging unit.
5 1st transfer section Dirt, scratches, or foreign matter on the 1st transfer
roller.
YES • Clean.
• Replace the transfer belt unit.
6 1st transfer section Faulty pressure/retraction operation of the 1st transfer
roller.
YES • Correct or replace the drive
system.
• Replace the transfer belt unit.
7 Developing section Toner bristles not even on the developing roller, resulting
in a line or band.
YES Replace the imaging unit.
NO • Replace the PH unit.
• Replace the high voltage unit.
4-color troubleshooting procedure
Step Section Check item Result Action
1 Paper path There is dirty or foreign matter on paper path. YES Check and clean the paper path
including the duplex section.
2 Transfer belt unit Lines that can be removed by cleaning are evident on
the transfer belt. (improper cleaning)
YES • Check and clean the cleaning
blade.
• Replace the transfer belt unit.
3 Transfer belt unit Dirt, scratches, or foreign matter on the transfer belt. YES • Clean.
• Replace the transfer belt unit.
4 Transfer belt unit 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.
5 Transfer belt unit Transfer belt rotates faultily. YES Replace the transfer belt unit.
6 2nd transfer section Dirt or foreign matter on the 2nd transfer roller. YES • Remove the foreign matter.
• Replace the transfer roller
unit.
7 2nd transfer section Faulty pressure/retraction operation of the 2nd transfer
roller.
YES • Correct.
• Replace the transfer roller
unit.
8 2nd transfer section There is a positive contact between the application
terminals of the 2nd transfer and the connection
terminals (T2) and ground terminal of the high voltage
unit.
NO Clean or correct the terminal.
9 Fusing unit There is dirty or foreign matter on paper path of fusing
unit.
YES Clean. (Disassembling the fusing
unit is prohibited.)
10 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 fusing unit.
• Replace the high voltage unit.
• Replace the base board.
16.3.5Uneven density 2
Typical faulty images
The arrow in the exemplary image troubles indicates the paper feeding direction.
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.
Service Manual
Y119930-3

Olivetti d-Color MF4003 Specifications

General

Brand	Olivetti
Model	d-Color MF4003
Category	Copier
Language	English