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Blank Prints
Initial Actions to Perform
■ Perform Initial Actions from Maintenance Procedures in Chapter 1.
■ Perform isolation Test Prints (Section 2.7.3) to isolate the problem between the CU
Board and the PU Board.
Areas of the Printer that Apply
■ Imaging Unit
■ LED Head
■ PU Board
Troubleshooting Steps
Resolution
1. Print a 100% Solid Fill Test Print. Is the entire test print blank?
Yes – Go to Step 2
No - Have the customer check there
application and printer settings.
2. Remove the Toner Cartridge and check for toner starvation inside the Imaging Unit. Is
there evidence of toner starvation?
Yes – Replace the Toner Cartridge.
No - Go to Step 3
3. Are the LED Heads dirty? Clean the heads with a clean, lint-free cloth.
Did this correct the problem?
Yes – Complete
No - Go to Step 4
4. Are the wiring harnesses on the LED Heads undamaged, properly routed and seated?
Yes – Repair / Replace Harnesses
No - Go to Step 5
5. Inspect the high-voltage wiring harness. Reseat the wiring Harness. Did this correct the
problem?
Yes – Complete
No - Replace in the following order:
Transfer Unit / LVPS / Imaging Unit
Sensor Board / HVPS / PU Board
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