Lexmark T652 - Page 66

Action Yes No
Step 4
Check the fuser unit assembly for excess wear and damage. If
necessary, replace the fuser unit assembly. See
“Fuser unit
assembly removal” on page 331.
Does the problem remain?
Go to step 5. Problem is solved.
Step 5
Check the sensor (input) for proper operation.
a Enter the diagnostic mode.
b Select Base sensor test.
c Observe the line item “input.”
Does the display on the operator panel change every time the
sensing area of the above sensor is interrupted or blocked?
Go to step 7. Go to step 6.
Step 6
Check the above sensor for proper connection, and if necessary,
replace the connection. See
“Sensor (input) removal ” on
page 296.
Does the problem remain?
Go to step 7. Problem is solved.
Step 7
Check the sensor (fuser output) for proper operation.
a Enter the diagnostic mode.
b Select Base sensor test.
c Observe the line item “input.”
CAUTION—HOT SURFACE: The area around the actuator is
very hot. Allow the fuser area to cool before proceeding.
Does the display on the operator panel, change every time the
sensing area of the above sensor is interrupted or blocked?
Go to step 9. Go to step 8.
Step 8
Check the above sensor for proper connection, and if necessary,
replace the connection or the fuser unit assembly. See
“Fuser unit
assembly removal” on page 331.
Does the problem remain?
Go to step 9. Problem is solved.
Step 9
Perform a print test and check the main motor assembly. If
necessary, replace the main drive motor assembly. See
“Output
cover assembly removal” on page 333.
Does the problem remain?
Go to step 10. Problem is solved.
4062
Diagnostic information
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