PQ1 Background
Symptom / check
Contamination of the blank area by toner
particles on the print
Probable Cause
1. An incorrect electrostatic value
2. Developer Bias incorrect.
3. Toner concentration too high.
4. Erase Lamp operation.
5. Contaminated charge scorotron
6. Defective Cleaner Blade
7. Web Oil system not operating correctly.
8. Contaminated or defective drum.
Corrective Action
1 A. Perform Electrostatic Series (ADJ 9.2).
1B. Perform GP1 HVPS Checkout Procedure.
1C. Clean/Replace/Repair the corotrons.
2A. Perform GP1 HVPS Checkout Procedure.
2B. Ensure that Tag 19 is installed.
3. Perform Image Density (ADJ 9.3).
4. Refer to BSD 9.6 and check for correct
operation of the Erase Lamp.
5, Clean or replace if necessary (PL 9.3).
6. Replace the Cleaner Blade (REP 9.4).
7. Refer to BSD 10.2 and check Web Oil
system for correct operation.
8. Replace the drum (REP 9.3).
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PQ 1 Background
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