Fuser Thermostat Failure; Fuser Driver Interface Failure; Fuser Driver To Upper Engine Pcba Interface Failure - Lexmark C950 Service Manual

5058-030

121.13 Fuser thermostat failure

Step Action and questions
Check the fuser assembly.
1
Is the above component
properly connected?
Replace the fuser assembly. Go
2
to
"Fuser assembly removal"
on page 4-78.
Does the error remain?
POR the machine.
3
Does the error continue?

126.01 Fuser driver interface failure

Step Action and questions
Check the fuser driver PCBA.
1
Is the above component
properly connected?
Replace the fuser driver PCBA.
2
Go to
"Fuser driver PCBA
removal" on page
Does the error remain?
POR the machine.
3
Does the error continue?

126.02 Fuser driver to upper engine PCBA interface failure

Step Action and questions
Check the fuser driver PCBA.
1
Is the above component
properly connected?
POR the machine.
2
Does the error continue?
Service Manual
2-54
Yes
Go to step 2.
Go to step 3.
Replace the upper printer engine
PCBA.
Go to
"Upper printer engine
PCBA removal" on page
Yes
Go to step 2.
Go to step 3.
4-84.
Replace the upper printer engine
PCBA.
Go to
"Upper printer engine
PCBA removal" on page
Yes
Go to step 2.
Go to step 3.
No
Remove foreign particles, and
replace the connections.
Problem resolved
Problem resolved
4-180.
No
Replace the connections.
Problem resolved
Problem resolved
4-180.
No
Replace the connections.
Problem resolved
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