Lexmark MS911 Service Manual page 182

Action
Step 16
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. See
"Motor (bifold knife) removal" on page
Does the problem remain?
Step 17
a
Test the sensor (bifold knife home).
Enter the Diagnostics menu, and then navigate to:
SENSOR TESTS > Hole Punch Booklet Finisher Sensor Tests >
Center fold knife home
b
Toggle the sensor.
Does the sensor status change while toggling the sensor?
Step 18
a
Remove the bifold knife and tamper assembly.
b
Make sure that the sensor is properly installed.
c
Make sure that the sensor is free of debris or dust.
d
Reseat the cable on the sensor. Check the cable for damage, and
replace if necessary.
e
Check the sensor for damage.
Is the sensor free of damage?
Step 19
Replace the sensor. See "Sensor (bifold knife home) removal" on
page 519.
Does the problem remain?
Step 20
a
Make sure that the bifold knife and gears are properly installed.
b
Check the parts for wear or damage, and replace the damaged parts
if necessary. See "Bifold knife removal" on page
Does the problem remain?
Step 21
a
Make sure that the bifold guide is properly installed.
b
Check the guide for damage, and replace if necessary.
Does the problem remain?
491.
521.
Diagnostic information
182
Yes No
Go to step 17. The problem is solved.
Go to step 20. Go to step 18.
Go to step 20. Go to step 19.
Go to step 20. The problem is solved.
Go to step 21. The problem is solved.
Contact the next level The problem is solved.
of support.
4021, 7421