Olivetti d-Color MF4003 User Manual

d-Color MF4003/MF3303
L TROUBLESHOOTING > 16. IMAGE QUALITY PROBLEM
L-130
Step Section Check item Result Action
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 to determine which
color causes the abnormal image.
None Go to scanner troubleshooting
procedure.
1-color troubleshooting procedure
Step Section Check item for the faulty color Result Action for the faulty color
1 Service Mode -> Table
Number
Select [Service Mode] -> [State Confirmation] -> [Table
Number]. The measured value is close to the standard
value.
• Developing bias: Vdc-C, Vdc-M, Vdc-Y, Vdc-K:
close to the standard value of -800 to 0
• Grid voltage: Vg-C, Vg-M, Vg-Y, Vg-K: close to the
standard value of -1600 to 0
NO • Check the high voltage unit
and the imaging unit for wiring
and connection.
• Replace the high voltage unit.
2 Write section Sharp white line or colored line is blurry. YES Clean the PH window.
3 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.
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 There is a positive contact between the developing bias
application terminals and the high voltage unit
connection terminals (Y: B4; M: B3; C: B2; K: B1).
NO Clean or correct the terminal.
6 Photoconductor section Scratches on photoconductor. YES • Clean.
• Replace the imaging unit.
7 Photoconductor section Toner line or dirt on photoconductor. (improper cleaning) YES Replace the imaging unit.
8 Photoconductor section Faint lines evident on the entire surface as if the surface
were brushed off.
YES • Select [Service Mode] ->
[Counter] -> [Life] and check
the counter value of the
Imaging Unit.
• Replace the imaging unit
having the greatest counter
value with a new one. (Not
the imaging unit of the color
that has developed the lines,
but the imaging unit having
the greatest counter value)
9 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.
10 1st transfer section Scratches or dirt on 1st transfer roller. YES • Clean.
• Replace the transfer belt unit.
11 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.
4-color troubleshooting procedure
Step Section Check item Result Action
1 Paper path There is dirty or foreign matter on paper path. YES Check or 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 or 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 2nd transfer section Dirt or foreign matter on the 2nd transfer roller. YES • Remove the foreign matter.
• Replace the transfer roller
unit.
Service Manual
Y119930-3

Olivetti d-Color MF4003 Specifications

General

Brand	Olivetti
Model	d-Color MF4003
Category	Copier
Language	English