Service manual

QMS 3260/4032 Laser Printer - Base Engine Technical Manual 5-23
Release Version 11-97
Primary Fault Isolation Procedures
5.10 Residual Image or Ghosting
PROBLEM
There are faint, ghost images appearing randomly on the page. The
images may be either from a previous page or from the page currently
being printed.
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.
• MCU PWB (RRP 9.7)
Step Actions and Questions Yes No
1
CUSTOMER USAGE INSPECTION
Inspect the residual images.
Was the customer printing numerous copies of the same
image?
Go to step 2 Go to step 3
2
Generate a print run of 30 pages of varying images.
Do residual images still appear?
Go to step 3 Problem
solved. Avoid
printing
numerous
copies of the
same image.
3
EP CARTRIDGE REPLACEMENT
Install a new EP Cartridge (RRP 5.2).
Are the ghost images gone?
Problem
solved
Go to step 4
4
FUSER INSPECTION
1. Generate ten Grid Test Prints and switch OFF printer
power when the last print is halfway through the Fuser.
2. Carefully remove the EP Cartridge and inspect the toner
image on the print before it enters the Fuser and immedi-
ately after it exits the Fuser.
Is the image on the paper normal before it enters the
Fuser, but there are ghost images on the paper when it
exits the Fuser?
Replace the
Fuser Assem-
bly (RRP 6.1)
Replace the
BTR Assem-
bly (RRP 5.3)
SER583X