Xerox Phaser 4500, Service Manual

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3-22 Phaser 4500 Service Manual
Error Messages and Codes Troubleshooting
Procedures
The Error Message Summary table that follows is the lead-in to the procedures that
follow in subsequent pages. The Front Panel Message column lists the error message
that appears on the Front Panel when the error occurs during normal operation. The
Diagnostic Message column lists the error message that appears when the error occurs
during use of Service Diagnostics. The Engine Errors column lists the code number
that appears in fault histories, either on the Front Panel display when you view
Engine Error History
or in the Service Usage Profile at line 262 Engine Error Log.
The Jam Errors column lists the code that appears on the Front Panel display when
you view
Jam History . The Procedure to Use column lists the page number of the
troubleshooting procedure for that error.
The procedures that follow the table are named with the messages that appear on the
Front Panel when an error occurs.
Error Message Summary
Front Panel Message Diagnostic Message
Engine
Errors Jam
Errors Procedure
to Use
“Engine Logic Board NVRAM
Failure\
Press i” U6: NVM Fail 3 — Go to
page 3-31.
“Main Motor Failure\ Press i” U1: Motor Fail/Power Off 2 — Go to
page 3-26.
“Laser Unit Failure\
Press i” Laser Fails at warm-up
U2-1: Laser Fail/Power Off 5 — Go to
page 3-27
“Laser Unit Failure\
Press i” Laser Fails Motor Speed
U2-2: Laser Fail/Power Off 5 — Go to
page 3-27
“Laser Unit Failure\
Press i” LD Power is high
U2-3: Laser Fail/Power Off 5 — Go to
page 3-27
“Laser Unit Failure\
Press i” LD Power is low
U2-4: Laser Fail/Power Off 5 — Go to
page 3-27
“Fuser Failure\Press i” Fuser High Temp
U4-1: Fuser Fail/Power Off 1 — Go to
page 3-28
“Fuser Failure\ Press i” Fuser Low Temp
U4-2: Fuser Fail/Power Off 1 — Go to
page 3-28.
“Fuser Failure\ Press i” Fuser Overheat in
Stand-by
U4-3: Fuser Fail/Power Off 1 — Go to
page 3-28.