Lexmark C935 Series, Service Manual

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Diagnostic information
2-87
5057-XXX
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904.04 Sensor (2nd transfer roll retract HP) lag error
5
Check the 2nd transfer roll retract motor for proper
operation.
1. Enter the Diagnostics Menu.
2. Touch
BASE SENSOR TESTS.
3. Touch Media Path.
4. Touch 2nd transfer roll retract HP.
Does the above component operate properly?
Go to step 6. Skip to step 5.
6 Check the 2nd transfer roll retract motor for proper
connection.
Is the above component properly connected?
Replace the 2nd
transfer roll retract
motor assembly
.
Go to “ 2nd
transfer roll
retract motor
assembly
removal” on
page 4-35
.
If the problem
persists, go to the
next step.
Replace the
connection.
7 Perform a print test.
Does the error continue?
Replace the lower
printer engine card
assembly.
Go to “Lower
printer engine
card assembly
removal” on
page 4-93
.
If the problem
persists, go to the
next step.
Problem solved.
8 Perform a POR.
Does the error occur when the power is turned off/on?
Contact the next
level of support. Problem solved.
Step Check Yes No
1 Perform a POR.
Does the error occur when the power is turned off/on?
Go to step 2. Perform several
print tests.
If the problem
remains, go to
step 2.
2 Check the sensor (2nd transfer roll HP) for proper
operation.
1. Enter the Diagnostics Menu.
2. Touch
Base Sensor Tests.
3. Touch Media Path.
4. Touch 2nd transfer roll retract HP.
Does the display on the operator panel, change every time
the sensing area of the above sensor is interrupted or
blocked?
Go to step 4. Go to step 3.
Step Check Yes No