03/2003
3-21
8850/ 510DP
PQ 22, PQ 23
Print Quality
PQ 22 Offsetting PQ 23 Verticle Magnification
Table 1 Offsetting Symptom / Check
Symptom/ check
Offsetting is the result of toner
adhering to the Fuser Heat
Roll and transferring to subse-
quent prints.
Probable Cause Corrective Action
1. There is insufficient fuser
oil on the Fuser Heat Roll.
1A. Check/replace the Web
Oiler (REP 10.7 ).
1B. Check/adjust oil dispense
rate [10-32].
2. The fuser temperature is
out of specification.
2. Check Fuser Temperature
(ADJ 10.1).
3. Incorrect pressure applied
to Fuser Pressure Roll
3. Check pressure springs for
damage or deformation.
Replace as required (REP
10.4)
4. Media is damp. 4A. Ensure that the media is
stored correctly.
4B. Refer to BSD 7.1 and
BSD 7.3 to check for correct
operation of the paper heat-
ers.
5. Damaged or contaminated
Fuser Heat Roll
5. Clean or replace the Fuser
Heat Roll (REP 10.2).
6. Damaged or contaminated
Pressure Roll
6. Clean or replace the Pres-
sure Roll (REP 10.8).
Table 1 Offsetting Symptom / Check
Symptom/ check
Magnification in the process
direction (verticle) is incorrect.
Probable Cause Corrective Action
Incorrect verticle magnifica-
tion adjustment
Adjust the Verticle magnifica-
tion (ADJ 8.1)
Drum Motor Encoder is
installed incorrectly or is not
operating correctly.
Check/Repair the Encoder
(REP 9.23).
Drum Motor Cover is interfer-
ring with the Encoder shaft.
Remove the Cover and shim
the cover away from the
Encoder shaft using washers
on the mounting screws
between the cover and the
housing.
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