Pq 19 Uneven Density - Xerox 8830 Service Manual

PQ19 Uneven Density
Symptom/check
Density and line thickness vary across the print.

PQ 19 Uneven Density

Probable Cause
1. Incorrect Corotron operation
2. Contaminated LED image Bar
3. Machine level
4. Developer mag brush not contacting the
drum evenly.
5. Defective drum
1/98
3-28
Corrective Action
1. Perform GP1, HVPS Checkout Procedure.
2. Check / clean the Image Bar. Check / clean
the Air Pressure Tubes (PL 9.9).
3. Check the level of the machine. (See Install
Procedure, pages 6-21 and 6-22).
4A. Clean drum ends and the Spacer Rolls on
the Developer Housing (PL 9.10).
4B. Ensure that the housing is latched
securely.
5. Clean or replace the drum (REP 9.3).
8830