Panasonic DP-C405 Service Handbook page 297

3.3.6. Vertical White Lines
Is the Test Pattern printout in
Copier F1 Mode normal?
Is the recording paper damp?
Is the Drum/Developer
Unit operating properly?
Are there any foreign particles,
or stains blocking the Laser
Beam path?
Is the Fuser belt surface
clean?
Ver. 1.1
START
No
Yes
Yes
No
No
Yes
Yes
No
No
Yes
END
P
Check the Scanner mechanism.
Replace the recording paper.
Replace the Drum/Developer Unit.
1. Remove the particles from the laser
beam path or clean the stains.
2. Replace the LSU.
Replace the Fuser Belt Unit.
297
DP-C405/C305/C265
FEB 2008