Diagnostic Information 2-23
4025-XXX
Error Code 922
There is a problem with the Fuser.
Logic Control on the MCU PWB sensed that the Fuser Thermostat opened.
Error Code 923
There is a problem with the Fuser.
Logic Control on the MCU PWB sensed that the Fuser Thermostat opened.
Step Actions and Questions Yes No
1 FUSER REPLACEMENT
Replace the “Fuser Assembly” on page 4-65
Does the error code appear?
Go to step 2 Problem
solved
2 MCU PWB REPLACEMENT
Replace the “Engine Board (MCU PWB)” on page 4-92
Does the error code appear?
Go to step 3 Problem
solved
3 The following printer FRUs and areas are associated with this
specific problem. One or more of these FRUs or areas may
have failed partially or completely. If you cannot isolate this
problem using the steps in this Service Check, replace each
FRU or troubleshoot each area listed below, one at a time, until
you isolate and solve the problem.
• Wiring and connectors linking the FRUs
• I/O PWB - Go to “I/O PWB” on page 4-89.
Step Actions and Questions Yes No
1 FUSER REPLACEMENT
Replace the “Fuser Assembly” on page 4-65
Does the error code appear?
Go to step 2 Problem
solved
2 MCU PWB REPLACEMENT
Replace the “Engine Board (MCU PWB)” on page 4-92
Does the error code appear?
Go to step 3 Problem
solved
3 The following printer FRUs and areas are associated with this
specific problem. One or more of these FRUs or areas may
have failed partially or completely. If you cannot isolate this
problem using the steps in this Service Check, replace each
FRU or troubleshoot each area listed below, one at a time, until
you isolate and solve the problem.
• Wiring and connectors linking the FRUs
• I\O PWB
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