125
SEP 2004
Ver. 1.2
DP-1520P/1820P/1820E
4.3.5. Vertical Dark Lines
START
Yes
No
Check the Scanner mechanism.
Is the OPC Drum/Developer
Unit operational?
Yes
No
Replace the OPC Drum/Developer Unit.
Is the LSU normal?
No
Yes
Replace the LSU.
END
No
Yes
Clean or replace the rollers.
Paper Travel
P
Are the Fuser and Pressure
Roller surfaces clean?
Is the Test Pattern printout in
Copier F1 Mode or Fax
Service Mode 3 normal?