Lexmark MS911 Service Manual page 127

Action
Step 3
Enter the Diagnostics menu, and then navigate to:
MOTOR TESTS > PRINTER MOTOR TESTS > Fusing tray
Does the motor run?
Step 4
a
Reseat the fuser motor cable.
b
Check the fuser motor cable for damage, and replace if necessary.
Does the problem remain?
Step 5
a
Check the fuser motor belt for proper tension, and then adjust if
necessary.
b
Make sure that the fuser motor gear is properly lubricated.
c
Check the fuser motor gear and belt for wear or damage, and replace
if necessary. See "Fuser drive gearbox removal" on page
Does the problem remain?
Step 6
Replace the motor (fuser). See
Does the problem remain?
Step 7
Check the fusing speed sensor actuator for damage, and replace if
necessary.
Does the problem remain?
Step 8
Check the sensor (fusing speed) for damage.
Is it free of damage?
Step 9
Enter the Diagnostics menu, and then navigate to:
SENSOR TESTS > PRINTER SENSOR TESTS > Fusing speed
Does the sensor status change while toggling the sensor?
Step 10
a
Reseat the fusing speed sensor cable.
b
Check the sensor cable for damage, and replace if necessary.
Does the problem remain?
"Motor (fuser) removal" on page
Diagnostic information
Yes
Go to step 7.
Go to step 5.
Go to step 6.
325.
Go to step 7.
324.
Go to step 8.
Go to step 9.
Go to step 12.
Go to step 11.
127
4021
No
Go to step 4.
The problem is solved.
The problem is solved.
The problem is solved.
The problem is solved.
Go to step 11.
Go to step 10.
The problem is solved.