Lexmark X850E - Center Thermistor Failure; Rear Thermistor Failure; Pressure Roll Thermistor Failure

2-162 MFP Service Manual
7500-XXX
922.00 Center thermistor failure
923.00 Rear thermistor failure
924.00 Pressure roll thermistor failure
Step Check Yes No
1 Check the fuser unit assembly for proper installation.
Open the printer left door assembly and check it.
Is the fuser unit assembly installed properly?
Go to step 2. Install the fuser
unit assembly
properly.
2 Check the fuser unit assembly connection.
Is the fuser unit assembly properly connected?
Replace the fuser
unit assembly.
Replace the
connection.
3 Perform a print test.
Does the error continue?
Replace the
printer engine card
assembly.
Go to “Printer
engine card
assembly
removal” on
page 4-117.
Problem solved.
Step Check Yes No
1 Check the fuser unit assembly for proper installation.
Open the printer left door assembly and check it.
Is the fuser unit assembly installed properly?
Go to step 2. Install the fuser
unit assembly
properly.
2 Check the fuser unit assembly connection.
Is the fuser unit assembly properly connected?
Replace the fuser
unit assembly.
Replace the
connection.
3 Perform a print test.
Does the error continue?
Replace the
printer engine card
assembly.
Go to “Printer
engine card
assembly
removal” on
page 4-117.
Problem solved.
Step Check Yes No
1 Check the fuser unit assembly for proper installation.
Open the printer left door assembly and check it.
Is the fuser unit assembly installed properly?
Go to step 2. Install the fuser
unit assembly
properly.
2 Check the fuser unit assembly connection.
Is the fuser unit assembly properly connected?
Replace the fuser
unit assembly.
Replace the
connection.