Lexmark MS911 - Page 165

Action Yes No
Step 4
a Test the sensor (HPT door).
Enter the Diagnostics menu, and then navigate to:
SENSOR TESTS > Staple, Hole Punch Finisher Sensor Tests >
HTU door open
b Toggle the sensor.
Does the sensor status change while toggling the sensor?
Go to step 7. Go to step 5.
Step 5
a Make sure that the sensor is properly installed.
b Make sure that the sensor is free of debris or dust.
c Reseat the cable on the sensor.
d Check the cable for damage, and replace if necessary.
Does the problem remain?
Go to step 6. The problem is solved.
Step 6
Replace the sensor. See
“Sensor (HPT door) removal” on page 323.
Does the problem remain?
Go to step 7. The problem is solved.
Step 7
a Reseat the interface cable on the HPT and reseat the connector J6 on
the SHPF controller board.
b Reseat the junction connectors on the cable.
c Make sure that the cable does not block the path of moving parts.
d Check the cable for damage, and replace if necessary.
Does the problem remain?
Go to step 8. The problem is solved.
Step 8
a Reseat the interface cable on the SHPF controller board and printer.
b Check the cable for damage, and replace if necessary.
Does the problem remain?
Go to step 9. The problem is solved.
Step 9
Replace the HPT.
Does the problem remain?
Go to step 10. The problem is solved.
Step 10
a Reseat all the cables on the SHPF controller board.
b Reset the printer.
Does the problem remain?
Go to step 11. The problem is solved.
4021, 7421
Diagnostic information
165