Pq 11 Deletions (Spots); Pq 12 Finger Marks - Xerox 8825 Service Manual

PQ 11 Deletions (spots)

Table 1 Deletions (spots) Symptom / Check
Symptom/ check Probable Cause
Localized areas of deletion in
the solid or halftone areas in
the print feed direction.
1. Damp media
2. T/DT Corotrons
3. Developer Housing
4. Insufficient toner resulting
in developer bead carryover.
5. The surface of the heat roll
is damaged.
6. Defective drum
7. Media transport
8. The Fabric Guide is con-
taminated, wrinkled or incor-
rectly tensioned.
Print Quality
PQ 11, PQ 12

PQ 12 Finger Marks

Corrective Action Symptom/ check
Toner marks on the lead edge
or trail edge of the print.
1A. Refer to BSD 7.1 and
BSD 7.3 to check for correct
operation of the Paper heat-
ers.
1B. Ensure that the Customer
is storing the media correctly.
2. Perform GP 1, HVPS
Checkout Procedure.
3A. Ensure that the housing
is latched securely.
3B. Check the mag roll for
damage or binding.
4A. Perform Electrostatic
Series ( ADJ 9.2).
4B. Perform Image Density (
ADJ 9.3).
5. Determine and fix the
cause of the damage to the
heat roll. Replace the heat
roll ( REP 10.2)
6. Replace the drum ( REP
9.3)
7. Check for correct gap (
ADJ 8.4).
8. Check/replace the Fabric
Guide ( PL 10.2).
01/02
3-14
Table 1 Finger Marks Symptom / Check
Probable Cause Corrective Action
1. Defective or dirty transfer/ 1A. Clean or replace the
detack Corotron Corotron wire (
1B. Perform
Checkout Procedure.
2. Cleaner Seal 2. Check / clean as required.
( PL
3. Web Oiler 3.
10.9)
4. Turnaround Baffle 4.
free of contamination (
8.2).
5. Heat Roll 5.
10.2)
6. Fabric Guide 6. Check / replace (
PL 9.4).
GP 1, HVPS
9.5A)
Check / replace ( REP
Ensure that the baffle is
PL
Check / replace ( REP
REP 8.9)
8825/8830 Printer