Service manual

QMS 3260/4032 Laser Printer - Base Engine Technical Manual 5-21
Release Version 11-97
Primary Fault Isolation Procedures
5.9 Spots
PROBLEM
There are spots of toner randomly scattered across 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
EP CARTRIDGE INSPECTION
1. Remove the EP Cartridge.
2. Inspect the outside of the Cartridge.
3. Open the Shutter and inspect the Drum.
Is the EP Cartridge dirty and is it leaking toner?
Replace the
EP Cartridge
Go to step 2
2
INTERIOR INSPECTION AND CLEANING
1. With the EP Cartridge removed, inspect the interior of the
printer for toner contamination.
2. Vacuum or wipe all interior surfaces, including Feed Rolls.
3. Generate 30 Blank Test Prints to clean out the printer.
4. Examine the last print out.
Are the spots gone?
Problem
solved
Go to step 3
3
IMAGE TRANSFER INSPECTION
1. Remove the Rear Cover (RRP 1.3).
2. Generate a Blank 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.
Is the paper clean before Transfer, but there are spots on
the paper after Transfer?
Replace the
BTR Assem-
bly (RRP 5.3)
Go to step 4
SER582X