Xerox 8825 Service Manual

01/02
3-8
8825/8830 Printer
Damaged Media, Media Handling Problems
Print Quality
Damaged Media Media Handling Problems
Introduction
Experience has shown that many media transportation problems have more than one cause
and must be handled using a systematic approach. Media transportation problems appear as
one of the following symptoms:
• Pre-fuser jams
• Print quality defects
• Physical distortion of media
When these symptoms occur, perform the following checks of the media and printer and per-
form the corrective actions.
Table 1 Damaged Media
Defect probable cause corrective action
1. Crease Marks
A thin irregular line on the
media caused by stressing the
media.
1. This defect can be caused
by incorrect handling of the
media.
1. Ensure that the media is
stored correctly and is not
damaged when inserted in the
printer.
2. Dog Ears
This is a corner of the lead
edge of the print that has been
bent back.
2. Curled media caused by a
failed or damaged Detack
Corotron.
2a. Ensure that TAG 12 is
installed.
2b. Try using a new roll of
media.
2c. Check for an obstruction
caused by a detack corotron.
3. Frayed Side Edge
This is damage to the sides of
the print.
3. Incorrect media side to
side registration
3. Ensure that the media is
loaded correctly.
Check the media path for an
obstruction.
4. Wrinkle
This is damage that is proba-
bly caused by the fuser sub-
system. This is a severe case
of creases that runs in the
direction of media travel.
Damage or obstruction in the
media path
Damp media
Incorrect fuser pressure
Heat roller is damaged or
contaminated.
Clear the media path of
obstructions
Refer to BSD 7.1 and BSD 7.3
to check for correct operation
of the Paper heaters.
Ensure that the Customer is
storing the media correctly.
Check the Fabric Guide ( REP
8.9) and the Pressure Plates (
REP 8.5).
Replace the heat roll ( REP
10.2).
5. Cockle
The media has a rough sur-
face like an orange peel.
This damage could be caused
by the fuser subsystem.
5. Damage or obstruction in
the media path
Fuser is too hot.
Damp media.
Pressure Plates or Fabric
Guide damaged / installed
incorrectly
Clear the media path of
obstructions.
Check Fuser Temperature (
ADJ 10.1)
Refer to BSD 7.1 and BSD 7.3
to check for correct operation
of the Paper heaters.
Ensure that the Customer is
storing the media correctly.
Check the Fabric Guide ( REP
8.9) and the Pressure Plates (
REP 8.5).
6. Other Damage 6. If there are other defects on
the print, go to Media Handling
Problems on, following page.
Table 1 Media Check
Media Check Corrective Action
1. Check the type of media:
a. Bond media less than 20 lb may perform
with less reliability than Xerox 20 lb.
b. Other brands of media may have different
design specifications than Xerox media and
may not give acceptable performance in the
printer.
a. Use Xerox-qualified media.
b. After all media checks, test with fresh Xerox
media.
2. Check the storage of media:
a. Media that is exposed to the environment
may have damp areas.
b. Media may have curled ends because of
incorrect storage.
a. Suggest keeping the media in the package
in which the Xerox media is shipped until the
media is to be used.
b. Suggest that the media should be stored
correctly.
c. Recommend keeping the printer switched
on overnight to help eliminate moisture
buildup.
Table 2 Printer Check
Printer Check Corrective Action
1. Contaminated or damaged transfer/ detack
Corotron.
2. An incorrect electrostatic value can cause
jams or deletions.
3. Detack Corotron shield incorrectly installed.
1. Clean or replace if necessary ( PL 9.4).
2. Check the following:
a. Clean or replace the Corotron as required (
PL 9.4).
b. Perform GP 1, HVPS Checkout Procedure.
3. Check for correct installation

Xerox 8825 Specifications

General

Brand	Xerox
Model	8825
Category	Printer
Language	English