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3.4 Print-Quality Troubleshooting
Light Prints in All Colors
The overall image density is too light in all colors. If the image is light in only one color,
see "Light Print in Only One Color".
Initial Actions to Perform
■ Perform Initial Actions from
■ Verify the
■ Verify the
■ Print the ID Check Pattern
Demo page
■ Perform isolation
■ Run the
Areas of the Printer that Apply
■ Imaging Unit
■ LED Head
■ Transfer Unit
■ HVPS
■ PU Board
1. Verify all packaging material has been removed form the toner cartridges
2. Remove the Imaging Units and the Transfer Unit and check for toner contamination on the
high voltage contacts. Are the contacts contaminated?
3. Are the LED Heads dirty? Clean the heads with a clean, lint-free cloth. Did this correct the
problem?
4. Are the wiring harnesses on the LED Heads undamaged, properly routed and seated?
5. Inspect the high-voltage wiring harness. Reseat the wiring Harness. Did this correct the
problem?
Maintenance Procedures in Chapter
media used
is supported by this printer.
media settings
are correct at the Control Panel.
(Reports – Print – ID Check Pattern)
(Reports – Information – Demo Page)
Test Prints (Section 2.7.3).
Density Error Correction Test
Troubleshooting Steps
to see if it is an application problem.
in
Section 2.7.5.
1.
and
Resolution
Yes – Go to Step 2
No - Remove packing material
Yes – Clean the contacts
No - Go to Step 3
Yes – Complete
No - Go to Step 4
Yes – Repair / Replace Harnesses
No - Go to Step 5
Yes – Complete
No - Replace in the following order:
Transfer Unit / Imaging Unit Sensor
Board / HVPS / PU Board
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