Lexmark MS911 Service Manual page 176

Action
Step 14
a
Remove the rear cover.
b
Bypass the front door switch.
c
Test the motor (SHPF elevator).
Enter the Diagnostics menu, and then navigate to:
MOTOR TESTS > Staple and Hole Punch Finisher Motor Tests >
Elevator
d
Check if the elevator is moving properly.
Is it moving properly?
Step 15
a
Reseat the cable on the motor.
b
Make sure that the motor is properly installed.
c
Check the motor and cable for damage, and replace if necessary.
Does the problem remain?
Step 16
a
Make sure that the sensor (SHPF elevator position) is properly
installed.
b
Make sure that the sensor is free of debris or dust.
c
Reseat the cable on the sensor. Check the cable for damage, and
replace if necessary.
d
Check the sensor for damage, and replace of necessary. See
(SHPF elevator position) removal" on page
Does the problem remain?
Step 17
Replace the sensor. See "Sensor (SHPF elevator position) removal" on
page 361.
Does the problem remain?
Step 18
a
Make sure that the elevator drive gears, elevator motor encoder, and
encoder belt are properly installed.
b
Check the parts for damage, and replace if necessary.
Does the problem remain?
Step 19
a
Make sure that the elevator belts and gears are properly installed.
b
Check the belts and gears for wear or damage, and replace if
necessary. See "SHPF elevator belts removals" on page
Does the problem remain?
Yes
Go to step 16.
Go to step 16.
Go to step 17.
"Sensor
361.
Go to step 18.
Go to step 19.
Go to step 20.
377.
Diagnostic information
176
4021, 7421
No
Go to step 15.
The problem is solved.
Go to step 18.
The problem is solved.
The problem is solved.
The problem is solved.