Pq 13 Light Image; Pq 14 Misregistration - Xerox 8825 Service Manual

PQ 13 Light Image

Table 1 Light Image Symptom / Check
Symptom/ check Probable Cause
Image area of a print has low
density.
1. Damp media
2. Incorrect Image Module
LED duty cycle
3. Incorrect Corotron opera-
tion
4. Incorrect Image Density
adjustment
5. Defective drum ground.
6. Defective drum.
7. Media Transport
8. Developer Housing
8825/8830 Printer

PQ 14 Misregistration

Corrective Action Symptom/ check
The registration of the image
on the prints is incorrect from
top to bottom or side to side.
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 Electrostatic
Series ( ADJ 9.2).
3. Perform GP 1, HVPS
Checkout Procedure.
4A. Perform Image Density (
ADJ 9.3).
4B. Replace the sensor ( PL
9.9).
5. Ensure that the drum is cor-
rectly grounded.
6. Replace the drum ( REP
9.3).
7. Ensure that the Media
Transport gap ( ADJ 8.4) is
set correctly.
8. Ensure the housing is
latched securely.
01/02
3-15
Table 1 Misregistration Symptom / Check
Probable Cause Corrective Action
1. Incorrect registration 1. Adjust Lead Edge Registra-
adjustment tion (
2. Damaged or worn compo- 2. Check the components for
nents in the media feeding damage or wear.
area
3. Defective registration sen- 3. Refer to
sor check the operation of the
registration sensor. Replace
the sensor if required (
8.8).
4. Incorrect registration roller 4. Clean or replace the regis-
nip tration roller (
5. Incorrectly loaded media 5. Instruct the operator on
loading the media correctly.
ADJ 8.2).
BSD 8.1 and
REP
PL 8.2).
Print Quality
PQ 13, PQ 14