Panasonic DP-3510 Service Manual page 156

4.3.5. Vertical Dark Lines
Is the Test Pattern printout in
Copier F1 Mode or Fax
Service Mode 3 normal?
Is the OPC/Developer Unit
operational?
Are there any foreign particles
or stains in the Corona Unit?
Is the LSU normal?
Are the Fuser and Pressure
Roller surfaces clean?
Ver. 5.2
START
No
Yes
No
Yes
Yes
No
No
Yes
No
Yes
END
156
DP-3510/3520/3530/4510/4520/4530/6010/6020/6030
P
Check the Scanner mechanism.
Replace the OPC/Developer Unit.
1. Clean the Corona Wire
with a soft, dry cloth.
2. Replace the Corona Unit.
Replace the LSU.
Clean or replace the rollers.
JAN 2006