Service manual

QMS 3260/4032 Laser Printer - Base Engine Technical Manual 3-11
Services Release Version 11-97
Primary FIPS: Error Codes
3.8 Error Code U4-2
There is a problem with the Fuser.
Logic Control on the MCU PWB detected the Fuser temperature exceeded the temperature set for Fuser
overheat.
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
1
Replace the Fuser Assembly (RRP 6.1)
Does the U4-2 error code appear?
Go to step 2 Problem
solved
2
Replace the MCU PWB (RRP 9.7)
Does the U4-2 error code appear?
Go to step 3 Problem
solved
3
Replace the AC Driver PWB (RRP 9.3)
Does the U4-2 error code appear?
Refer to the
wirin
g
dia-
g
rams Section
14 and check
for a broken
wire or a
loose connec-
tion between
components
Problem
solved