Lexmark T652 Service Manual page 66

Action
Step 4
Check the fuser unit assembly for excess wear and damage. If
necessary, replace the fuser unit assembly. See
assembly removal" on page
Does the problem remain?
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?
Step 6
Check the above sensor for proper connection, and if necessary,
replace the connection. See
page 296.
Does the problem remain?
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?
Step 8
Check the above sensor for proper connection, and if necessary,
replace the connection or the fuser unit assembly. See
assembly removal" on page
Does the problem remain?
Step 9
Perform a print test and check the main motor assembly. If
necessary, replace the main drive motor assembly. See
cover assembly removal" on page
Does the problem remain?
"Fuser unit
331.
"Sensor (input) removal " on
331.
333.
Diagnostic information
66
Yes
Go to step 5.
Go to step 7.
Go to step 7.
Go to step 9.
Go to step 9.
"Fuser unit
Go to step 10.
"Output
4062
No
Problem is solved.
Go to step 6.
Problem is solved.
Go to step 8.
Problem is solved.
Problem is solved.