Lexmark C935 - Page 237

Diagnostic information 2-145
5057-XXX
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4
Check the appropriate toner add assembly chute for
clogging.
Is the chute, located at the lower part of the above
component, free of clogs and obstructions?
Go to step 5. Clean any
obstructions.
5
Check the appropriate segment of the CMYK toner add
motor assembly for operation.
Caution: When performing motor tests,
ensure that all cover and door interlock
switches are overridden.
Warning: Only perform this test in segments of three
seconds or less or toner spill will occur.
1. Enter the Diagnostics Menu.
2. Select MOTOR TESTS.
3. Select Printer Motor Test.
4. Select C, M, Y or K toner add motor.
Does the above component operate properly?
Go to step 7. Go to step 6.
6
Check the CMYK toner add motor assembly connection.
Is the above component properly connected?
Replace the
CMYK toner add
motor assembly.
Go to “CMYK
toner add motor
assembly
removal” on
page 4-103.
Replace the
connection.
7
Perform a POR.
Does the error remain when the power is turned off/on
again?
Replace the upper
printer engine card
assembly.
Go to “Upper
printer engine
card assembly
removal” on
page 4-90.
Problem solved.
Step Check Yes No