Pq2 Bands - Xerox 8830 Service Manual

PQ2 Bands

Symptom/ checks
Bands are 1 mm or more wide and are in the
media feed direction. High density bands are
called black lines.
PQ2 Bands
Probable Cause
1. Contaminated charge scorotron
2. Defective Cleaner Blade
3. Contaminated magnetic roll.
4. Incorrect Electrostatic value.
5. Toner cloud from the Developer Module
contaminating the Drum and corotrons.
6. T/DT Corotron contaminated.
7. Contaminated or defective drum.
8. Image Module LEDs operating incorrectly.
1/98
3-10
Corrective Action
1. Clean / replace screen / pins (REP 9.8).
2. Replace the Cleaner Blade (REP 9.4).
3. Check for foreign objects on the mag roll.
4A. Ensure that Tag 19 is Installed.
4B. Perform Electrostatic Series (ADJ 9.2).
4C. Perform GP1 HVPS Checkout Procedure.
4D. Clean / replace / repair the corotrons.
5A. Ensure that the Air Pressure Tubes are
clean (REP 9.18).
5B. Check for toner buildup on the tower edge
of the Developer Housing.
6. Check / clean / repair
7. Replace the drum (REP 9.3).
8. Enter (9-21-5] and check for
operation. (Refer to BSDs 6.1, 6.2 and check
for correct electrical connections to/from the
Receiver PWB and the LED Image Bar).
correct
8830