59
Unexpected Colors
The colors produced by the printer are dramatically different from the color expected.
Initial Actions
to Perform
■
Perform Initial Actions from
Maintenance Procedures in Chapter 1
.
■
Verify the
media used
is supported by this printer.
■
Verify the
media settings
are correct at the Control Panel.
■
Print the ID Check Pattern
(Reports – Print – ID Check Pattern)
and
Demo page
(Reports – Information – Demo Page)
to see if it is an application problem.
■
Perform isolation
Test Prints
(Section 2.7.3).
■
Run the
Density Error Correction Test
in
Section 2.7.5.
Areas of the Printer that Apply
■
Imaging Unit
■
HVPS
■
PU Board
Troubleshooting Steps
Resolution
1. Print the ID Check Pattern / Demo Page and evaluate the colors. Are the colors on the test
pages representative of what the customer expects?
Yes – Complete, the problem is with
the Customer application.
No - Go to Step 2.
2. Print a configuration page to check the Imaging Unit life remaining. If the Imaging Unit is
reaching it’s maximum image count, this can reduce print-quality.
Yes – replace the Imaging Unit.
No - Go to Step 3.
3. Print the 100% Solid Fill Test pattern and check for any missing colors. Is the problem
with a single color?
Yes –Go to Step 4.
No - Go to Step 6
4. Is there debris or contamination on the LED Head?
Yes – Clean with a dry, lint free cloth.
No - Go to Step 5
5. Swap the LED Head of the problem color with any other LED Head. Print a Solid Fill Test
Pattern. Has the problem moved with the LED Head?
Yes – Replace the defective LED Head
No – Go to Step 6
6. Swap the Imaging Unit of the problem color with any other Imaging Unit.
NOTE:
Remove the keys before swapping. Print a Solid Fill Test Pattern to check for defects.
Has the problem color moved with the Imaging Unit?
Yes – Replace the Imaging Unit
No - Go to Step 7.
7. Check for toner contamination on the high voltage contacts. Remove the Imaging Units
and the Transfer Unit and Is there contamination on the contacts?
Yes – Clean the contacts.
No - Go to Step 8.
8. Are the wiring harnesses on the LED heads undamaged, properly routed and seated?
Yes – Go to Step 9.
No - reseat the wiring harness.
9. Inspect the high-voltage wiring harness.
Yes – reseat the wiring harness.
No - Replace in the following order:
Transfer Unit / LVPS / Imaging Unit
Sensor Board / HVPS / PU Board