Olivetti d-Color MF4003 Service Manual page 539

d-Color MF4003/MF3303
Step Section
1-color troubleshooting procedure
Step Section
1 Write section
2 Charging section
3 Photoconductor section
4 Developing section
5 Service Mode -> TCR
data
6 Service Mode -> Max
Image Density Adj
7 Connector connection
8 Service Mode -> Initialize
+ Image Stabilization
4-color troubleshooting procedure
Step Section
1 Transfer belt unit
2 2nd transfer section
3 Service Mode -> Max
Image Density Adj
4 Service Mode -> Initialize
+ Image Stabilization
Scanner troubleshooting procedure
Step Section
1 Original
2 Original Type
3 Basic -> Density
4 When DF is being used
5 When original glass is
being used
6 Parts along scanning path Light guide or lens array is dirty.
7 When DF is being used:
1st side
8 When DF is being used:
2nd side
Y119930-3
Check item
• Check the image after printing to determine which
color causes the abnormal image.
Check item for the faulty color
Dirt or foreign matter on the dust-proof glass of the PH.
Foreign matter on charging roller.
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).
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).
Select [Service Mode] -> [State Confirmation] -> [Level
History 1] and the measured value is correct.
TCR-C, TCR-M, TCR-Y, TCR-K: normal value 5 to 8%
Select [Service Mode] -> [Imaging Process Adjustment] -
> [Max Image Density Adj] and make the necessary
adjustment, and the image trouble is eliminated.
Faulty connector connection the high voltage unit (CN1)
and base board (CN4E).
Select [Service Mode] -> [Imaging Process Adjustment] -
> [Stabilizer] -> [Initialize + Image Stabilization] and
[Gradation Adjust], and the image trouble is eliminated.
Check item
There is a positive contact between the transfer belt
application terminals and the high voltage unit
connection terminals (T1).
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.
Select [Service Mode] -> [Imaging Process Adjustment] -
> [Max Image Density Adj] and make the necessary
adjustment, and the image trouble is eliminated.
Select [Service Mode] -> [Imaging Process Adjustment] -
> [Stabilizer] -> [Initialize + Image Stabilization] and
[Gradation Adjust], and the image trouble is eliminated.
Check item
Original is damaged or dirty.
Select [Copy] -> [Original Type] and change the setting,
and the image trouble is eliminated.
Change the density setting, and the image trouble is
eliminated.
DF does not lie flat.
Original glass or original pad is dirty.
Original reading glass is dirty.
• Shading correction surface of DF is dirty.
• CIS glass is dirty.
L-141
L TROUBLESHOOTING > 16. IMAGE QUALITY PROBLEM
Result
Result
YES Clean the PH window.
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.
NO Clean or correct the terminal.
NO Clean or correct the terminal.
NO Select [Service Mode] -> [Imaging
Process Adjustment] -> [Manual
Toner Add] and perform the
function.
NO Go to the next step.
YES Reconnect the connector.
YES Readjust.
NO •
•
•
Result
NO Clean or correct the terminal.
NO Clean or correct the terminal.
NO Go to the next step.
YES Readjust.
NO •
•
•
Result
YES Change the original.
NO Go to the next step.
NO Go to the next step.
YES Replace DF if it is deformed or
hinges are broken.
YES Clean.
YES Clean.
YES Clean.
NO Replace the CIS module.
YES Clean.
NO Replace the DF CIS module assy.
Action
Action for the faulty color
Replace the imaging unit.
Replace the PH unit.
Replace the high voltage unit.
Action
Replace the transfer belt unit.
Replace the high voltage unit.
Replace the base board.
Action
Service Manual