Service manual

QMS 3260/4032 Laser Printer - Base Engine Technical Manual 5-9
Release Version 11-97
Primary Fault Isolation Procedures
5.3 Black Prints
PROBLEM
The entire print is black.
SUSPECT COMPONENTS
The followin
g
components are associated with this specific problem. One or
more of these components ma
y
have failed partiall
y
or completel
y
. If
y
ou can-
not isolate the problem usin
g
this FIP, replace each component listed below,
one at a time, until the problem disappears.
• LVPS Assembly (RRP 9.2)
Step Actions and Questions Yes No
1
ROS WINDOW INSPECTION
1. Remove the EP Cartridge.
2. Inspect the ROS Window for a sheet of paper that may
have lodged in front of it and could be blocking the laser
beam from reaching the Drum.
Is the ROS Window free of paper?
Go to step 2 Remove the
paper
2
CONTROLLER OR HOST SOFTWARE ISOLATION
Generate a Grid Test Print.
Is the test print image normal?
Replace the
QMS Video
Controller
(RRP 9.8) or
reload the
Host Software
Go to step 3
3
EP CARTRIDGE REPLACEMENT
Install a new EP Cartridge (RRP 5.2).
Is there a normal image on the paper?
Problem
solved
Go to step 4