Lexmark T652 Service Manual page 77

Sensor (toner empty) service check
Action
Step 1
Inspect the print cartridge pulse wheel for damage, and if
necessary, replace the print cartridge pulse wheel.
Does the problem remain?
Step 2
Reinstall the sensor (toner empty) properly.
Does the problem remain?
Step 3
Check the sensor (toner empty) for proper operation.
a
Enter the diagnostic mode.
b
Select Base sensor test.
c
Observe the line item "toner."
Does the display on the operator panel, change every time the
sensing area of the above sensor is interrupted or blocked?
Step 4
Check the above sensor for proper connection. If necessary,
replace the connection or sensor. See
removal" on page 296.
Does the problem remain?
Sensor (fuser output) service check
Action
Step 1
Check the fuser wiper cover assembly for missing parts or damage,
such as cracks. If necessary, replace the fuser wiper cover
assembly. See "Fuser wiper cover assembly removal" on
page 332.
Does the problem remain?
Step 2
Check the sensor (fuser output) for damage. If necessary, replace
the fuser unit assembly. See
page 331.
Does the problem remain?
"Sensor (toner empty)
"Fuser unit assembly removal" on
Diagnostic information
77
Yes No
Go to step 2. Problem is solved.
Go to step 3. Problem is solved.
Problem is solved. Go to step 4.
Contact next level of Problem is solved.
support.
Yes No
Go to step 2. Problem is solved.
Go to step 3. Problem is solved.
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