426
DP-C405/C305/C265
FEB 2008Ver. 1.1
4.3.8. Vertical Dark Lines
START
Yes
No
Check the Scanner mechanism.
Is the Drum/Developer Unit
operating properly?
No
Yes
Yes
No
Replace the Drum/Developer Unit.
Is the LSU operating properly?
No
Yes
Replace the LSU.
END
No
Yes
Paper Travel
P
Is the Test Pattern printout in
Copier F1 Mode normal?
Is the Fuser Belt surface
clean?
Replace the Fuser Belt Unit.
Is the IT Unit operating
properly?
Check the IT mechanism.