Olivetti d-Color MF4003 Service Manual page 537

d-Color MF4003/MF3303
Step Section
7 Transfer belt unit
8 2nd transfer section
9 IDC sensor
10 Service Mode ->
Stabilizer
11 Service Mode ->
Gradation Adjust
12 Service Mode -> Max
Image Density Adj
13 Connector connection
14 Service Mode -> Initialize
+ Image Stabilization
16.3.9 Incorrect color image registration
Typical faulty images
The arrow in the exemplary image troubles indicates the paper feeding direction.
Initial troubleshooting procedure
Step Section
1 Malfunction code
2 Paper Setting
3 Service Mode ->
Stabilizer
4 Service Mode ->
Gradation Adjust
5 Image check
Engine troubleshooting procedure
Step Section
1 Connector connection
2 Service Mode -> Color
Registration Adjustment
Y119930-3
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.
IDC sensor is dirty.
Select [Service Mode] -> [Imaging Process Adjustment] -
> [Stabilizer] -> [Stabilization Only] and the image
trouble is eliminated.
Select [Service Mode] -> [Imaging Process Adjustment] -
> [Gradation Adjust] and the image trouble is eliminated.
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
The maintenance call mark is displayed on the panel.
The paper to be used for printing does not match the
paper type and size of paper setting selected on the
machine.
Select [Service Mode] -> [Imaging Process Adjustment] -
> [Stabilizer] -> [Stabilization Only] and the image
trouble is eliminated.
Select [Service Mode] -> [Imaging Process Adjustment] -
> [Gradation Adjust] and the image trouble is eliminated.
• Select [Service Mode] -> [Test Mode] -> [8 Color
Solid Pattern]. Select "SINGLE", "HYPER", "Error
diffusion", and "1-Sided", enter "64" for Density, and
load tray 2 with A4 paper. This runs a print cycle of
8 colors on one sheet of paper.
• Check the image after printing and the abnormal
image is evident.
Check item
Faulty connector connection the PH unit and base board
(CN13).
Select [Service Mode] -> [Machine] -> [Color
Registration Adjustment] and the image trouble is
eliminated.
L-139
L TROUBLESHOOTING > 16. IMAGE QUALITY PROBLEM
Result
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.
YES Clean.
NO Go to the next step.
NO Go to the next step.
NO Go to the next step.
YES Reconnect the connector.
YES Readjust.
NO •
•
•
Result
YES Perform the relevant
troubleshooting procedure
corresponding to the malfunction
code.
YES Make the paper setting again on
the machine.
NO Go to the next step.
NO Go to the next step.
YES Go to engine troubleshooting
procedure.
NO Go to scanner troubleshooting
procedure.
Result
YES Reconnect the connector.
NO Go to the next step.
Action
Replace the transfer belt unit.
Replace the high voltage unit.
Replace the base board.
Action
Action
Service Manual