Xerox 8825 Service Manual

01/02
3-9
8825/8830 Printer
PQ 1, PQ 2
Print Quality
PQ 1 Background PQ 2 Bands
Table 1 Background Symptom / Check
Symptom / check
Contamination of the blank
area by toner particles on the
print
Probable Cause Corrective Action
1. An incorrect electrostatic
value
1A. Perform Electrostatic
Series ( ADJ 9.2).
1B. Perform GP 1 HVPS
Checkout Procedure.
1C. Clean/Replace/Repair
the corotrons.
2. Developer Bias incorrect. 2A. Perform GP 1 HVPS
Checkout Procedure.
2B. Ensure that TAG 19 is
installed.
3. Toner concentration too
high.
3. Perform Image Density (
ADJ 9.3).
4. Erase Lamp operation. 4. Refer to BSD 9.6 and
check for correct operation of
the Erase Lamp.
5. Contaminated charge
scorotron
5, Clean or replace if neces-
sary ( PL 9.3).
6. Defective Cleaner Blade 6. Replace the Cleaner Blade
( REP 9.4).
7. Web Oil system not operat-
ing correctly.
7. Refer to BSD 10.2 and
check Web Oil system for cor-
rect operation.
8. Contaminated or defective
drum.
8. Replace the drum ( REP
9.3).
Table 1 Bands Symptom / Check
Symptom/ checks
Bands are 1 mm or more wide
and are in the media feed
direction. High density bands
are called black lines.
Probable Cause Corrective Action
1. Contaminated charge
scorotron
1. Clean / replace screen /
pins ( REP 9.8).
2. Defective Cleaner Blade 2. Replace the Cleaner Blade
( REP 9.4).
3. Contaminated magnetic
roll.
3. Check for foreign objects
on the mag roll.
4. Incorrect Electrostatic
value.
4A. Ensure that TAG 19 is
installed.
4B. Perform Electrostatic
Series ( ADJ 9.2).
4C. Perform GP 1 HVPS
Checkout Procedure.
4D. Clean / replace / repair
the corotrons.
5. Toner cloud from the Devel-
oper Module contaminating
the Drum and corotrons.
5A. Ensure that the Air Pres-
sure Tubes are clean ( REP
9.18).
5B. Check for toner buildup on
the lower edge of the Devel-
oper Housing.
6. T/DT Corotron contami-
nated.
6. Check / clean / repair
7. Contaminated or defective
drum.
7. Replace the drum ( REP
9.3).
8. Image Module LEDs oper-
ating incorrectly.
8. Enter [9-21-5 and check for
correct operation. (Refer to
BSD 6.1, BSD 6.2 and check
for correct electrical connec-
tions to/from the Receiver
PWB and the LED Image
Bar).
9. LED Bar without Tag 28
incorrectly connected to Main
PWB.
9. Connect to J307A.
10. Toner buildup on Mag-
netic Roll.
10. Go to Technical Services
Bulletin (TSB 98116) for toner
removal procedure.

Xerox 8825 Specifications

General

Brand	Xerox
Model	8825
Category	Printer
Language	English