Service manual

QMS 3260/4032 Laser Printer - Base Engine Technical Manual 5-19
Release Version 11-97
Primary Fault Isolation Procedures
5.8 Spot Deletions
PROBLEM
There are areas of the image that are extremely light or missing entirely.
These missing areas form spots that are localized to small areas of the
page.
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 cannot isolate the problem usin
g
this FIP, replace each component
listed below, one at a time, until the problem disappears.
• no recommendations
Step Actions and Questions Yes No
1
PAPER INSPECTION
Is the paper wrinkled or dimpled?
Replace with
fresh, dry
paper
Go to step 2
2
EP CARTRIDGE REPLACEMENT
Install a new EP Cartridge (RRP 5.2).
Are the spot deletions gone?
Problem
solved
Go to step 3
3
IMAGE TRANSFER INSPECTION
1. Remove the Rear Cover (RRP 1.3).
2. Generate a Black Test Print and switch OFF printer power
halfway through the print cycle.
3. Open the Left Upper Cover.
4. Open the Drum Shutter.
5. Hand rotate (counter clockwise) the Main Drive Motor to
advance the Drum far enough so you can see the devel-
oped image area on the Drum before
it reached Transfer.
Before Transfer was the toner image on the drum normal
and without spot deletions, but there are spot deletions on
the paper after Transfer?
Replace the
BTR Assem-
bly (RRP 5.3)
Go to step 4
SER581X