Damaged Media; Media Handling Problems - Xerox 8825 Service Manual

Damaged Media

Table 1 Damaged Media
Defect probable cause
1. Crease Marks 1. This defect can be caused
A thin irregular line on the by incorrect handling of the
media caused by stressing the media.
media.
2. Dog Ears 2. Curled media caused by a
This is a corner of the lead failed or damaged Detack
edge of the print that has been Corotron.
bent back.
3. Frayed Side Edge 3. Incorrect media side to
This is damage to the sides of side registration
the print.
4. Wrinkle Damage or obstruction in the
This is damage that is proba- media path
bly caused by the fuser sub- Damp media
system. This is a severe case Incorrect fuser pressure
of creases that runs in the Heat roller is damaged or
direction of media travel. contaminated.
5. Cockle 5. Damage or obstruction in
The media has a rough sur- the media path
face like an orange peel. Fuser is too hot.
This damage could be caused Damp media.
by the fuser subsystem. Pressure Plates or Fabric
Guide damaged / installed
incorrectly
6. Other Damage
Print Quality
Damaged Media, Media Handling Problems

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:
corrective action
•
1. Ensure that the media is
•
stored correctly and is not
damaged when inserted in the •
printer.
When these symptoms occur, perform the following checks of the media and printer and per-
2a. Ensure that TAG 12 is form the corrective actions.
installed.
2b. Try using a new roll of
media.
Media Check
2c. Check for an obstruction
1. Check the type of media:
caused by a detack corotron.
a. Bond media less than 20 lb may perform
3. Ensure that the media is
with less reliability than Xerox 20 lb.
loaded correctly.
b. Other brands of media may have different
Check the media path for an
design specifications than Xerox media and
obstruction.
may not give acceptable performance in the
Clear the media path of
printer.
obstructions
2. Check the storage of media:
Refer to BSD 7.1 and BSD 7.3
a. Media that is exposed to the environment
to check for correct operation
may have damp areas.
of the Paper heaters.
b. Media may have curled ends because of
Ensure that the Customer is
incorrect storage.
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).
Clear the media path of Printer Check
obstructions.
1. Contaminated or damaged transfer/ detack
Check Fuser Temperature (
Corotron.
ADJ 10.1)
2. An incorrect electrostatic value can cause
Refer to BSD 7.1 and BSD 7.3
jams or deletions.
to check for correct operation
3. Detack Corotron shield incorrectly installed.
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. If there are other defects on
the print, go to Media Handling
Problems on, following page.
01/02
3-8
Pre-fuser jams
Print quality defects
Physical distortion of media
Table 1 Media Check
Table 2 Printer Check
Corrective Action
a. Use Xerox-qualified media.
b. After all media checks, test with fresh Xerox
media.
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.
Corrective Action
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
8825/8830 Printer