Lexmark W850n Service Manual page 112

4024-110
Step Check
8 Check the heat roll and pressure roll.
Remove the fuser unit assembly.
Is there contamination or cracking on the heat roll or
pressure roll?
9 Check the printer engine card assembly.
Replace the printer engine card assembly.
Perform a print test.
Does the error continue?
10 Check the printhead for connection.
Warning: If too much force is applied to the board when
checking it, the printhead could become misaligned.
Is the component connected properly?
2-90
Printer Service Manual
Yes No
Replace the fuser Go to step 9.
unit assembly.
Go to step 10. Problem solved.
Replace the RIP Replace the
card assembly. connection.
Go to "RIP card
assembly
removal" on
page 4-126.
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