Service manual

4-14 QMS 3260/4032 Laser Printer - Base Engine Technical Manual
Release Version 11-97
Primary Fault Isolation Procedures
4.8 Inoperative Offset
The Offset function does not work or does not work correctly.
Step Actions and Questions Yes No
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.
• wiring and connectors linking the components
• LVPS Assembly (RRP 9.2)
1
MAIN DRIVE ASSEMBLY INSPECTION
1. Remove the Rear Cover Assembly (RRP 1.3)
2. Use Diagnostic Mode - Output Test 8-1 to check the Main
Motor and Main Drive Assembly.
Does the Main Motor run and do the gears of the Drive
Assembly rotate normally?
Go to step 2 Go to FIP 4.4
Inoperative
Main Drive
Assembly
2
EXIT DRIVE TEST
1. Remove the Fuser Full Cover (RRP 1.1)
2. Use Diagnostic Mode - Output 10-6 to check the Exit
Motor in the forward mode.
3. Use Diagnostic Mode - Output 10-7 to check the Exit
Motor in the reverse mode.
Does the Exit Motor run forward during 10-6 and reverse
during 10-7?
Go to step 3 Replace the
Exit Drive
Assembly
(RRP 7.2)
3
OFFSET TEST
Use Diagnostic Mode - Output 10-6 and 10-7 to check the
movement of the Offset Roll.
Does the Offset Roll shift away from the Exit Motor during
10-6 and toward the Motor during 10-7?
Go to step 4 Replace the
Offset Unit
Assembly
(RRP 7.1)
4
MCU PWB REPLACEMENT
Replace the MCU PWB (RRP 9.7)
Does Offset work correctly?
Problem
solved
Go to Suspect
Components