Table 1-38 Error Code U4-3 Fuser Failure Power Off/On - Xerox DOCUPRINT N4525 Service Quick Reference Manual

RAP 1-10
Error Code U4-3
There is a problem with the Fuser.
Logic Control on the Print Engine Controller Board sensed that the Fuser Thermostat
opened.

Table 1-38 Error Code U4-3 Fuser Failure Power Off/On

Step Actions and Questions
1 FUSER REPLACEMENT
Replace the Fuser Assembly.
Does the error code appear?
PRINT ENGINE CONTROLLER BOARD
2
REPLACEMENT
Replace the Print Engine Controller Board (RRP 1-72).
Does the error code appear?
3 The following printer components and areas are
associated with this specific problem. One or more of
these components or areas may have failed partially or
completely. If you cannot isolate this problem using the
steps in this Repair Analysis Procedure, replace each
component or troubleshoot each area listed below, one at
a time, until you isolate and solve the problem.
Wiring and connectors linking the components


Input/Output Board (RRP 1-70).


1-56 DocuPrint N4525 Network Laser Printer - Service Guide
Fuser Failure
Power Off/On
Yes
Go to step 2
Go to step 3
No
Problem
solved
Problem
solved