Panasonic DP-C405 Service Handbook page 302

3.3.10. Dark Background
Is the Test Pattern printout in
Copier F1 Mode normal?
Is the recording paper damp?
Is the Drum/Developer
Unit operating properly?
Is the LSU operating properly?
Is the HVPS operating
properly?
Is the IT Unit operating
properly?
Ver. 1.1
START
No
Yes
Yes
No
No
Yes
No
Yes
No
Yes
No
Yes
END
P
Check the Scanner mechanism.
Replace the recording paper.
Replace the Drum/Developer Unit.
Replace the LSU.
1. Check all connectors and, voltages
on the HVPS.
2. Check the Spring Connector, and
voltages on the HVPS.
3. Replace the HVPS.
Check the IT mechanism.
302
DP-C405/C305/C265
FEB 2008