Service manual

4-8 QMS 3260/4032 Laser Printer - Base Engine Technical Manual
Release Version 11-97
Primary Fault Isolation Procedures
4.4 Inoperative Main Drive Assembly
The Main Drive Assembly does not function
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.
• no recommendations
1
MAIN DRIVE ASSEMBLY TEST
Use Diagnostic Mode - Output Test 4-1 to check the Main
Motor and Main Drive Assembly.
Does the Main Motor run and do the gears of the Drive
Assembly rotate normally?
Replace the
MCU PWB
(RRP 9.7)
Go to step 2
2
MAIN DRIVE ASSEMBLY MANUAL TEST
Hand rotate (counter clockwise) the Main Motor.
Can you rotate the Main Motor and do the gears of the
Drive Assembly rotate easily and without binding?
Go to step 9 Go to step 3
3
EP CARTRIDGE BINDING CHECK
1. Remove the EP Cartridge.
2. Hand rotate (counter clockwise) the Main Motor.
Can you rotate the Main Motor and do the gears of the
Drive Assembly rotate easily and without binding?
Replace the
EP Cartrid
g
e
with a new
one
(
RRP 5.2
)
Go to step 4
4
FUSER ASSEMBLY BINDING CHECK
1. Remove the Fuser Assembly (RRP 6.1).
2. Hand rotate (counter clockwise) the Main Motor.
Can you rotate the Main Motor and do the gears of the
Drive Assembly rotate easily and without binding?
Replace the
Fuser Assem-
bly with a new
one (RRP 6.1)
Go to step 5
5
EXIT DRIVE ASSEMBLY BINDING CHECK
1. Lift the Exit Drive Assembly spring-loaded drive gear off of
the Main Drive Assembly drive gear.
2. Hand rotate (counter clockwise) the Main Motor.
Can you rotate the Main Motor and do the gears of the
Drive Assembly rotate easily and without binding?
Replace the
Exit Drive
Assembl
y
(
RRP 7.2
)
Go to step 6