Xerox Phaser 7700 Service Manual page 96

Error Chain /
Code Link
113 12-244 FINISHER ERROR 113 STAPLER FAILURE
Open the Finisher Front Door.
Verify the Stapler Carriage is its full home position.
Enter Service Diagnostics Mode.
Run the Stapler "Head Home" sensor test to verify home position.
Does the sensor indicate home position?
Yes No
Remove the Finisher Rear Cover and the Board Cover (RRP 72, on page 11-310).
Measure the voltage between Finisher Board connector P852-2 (see figure page 3-47)
and Finisher frame ground while interrupting the Home Sensor.
Does the voltage toggle between 0 VDC and +5 VDC?
Yes No
Measure the voltage between Finisher Board connector P852-1
(see figure page 3-47) and Finisher frame ground.
Does the voltage measure +5 VDC?
Yes No
Disconnect to the Stapler Unit Assembly.
Measure again the voltage between Finisher Board connector P852-1
(see figure page 3-47) and Finisher frame ground.
Does the voltage now measure +5 VDC?
Yes No
Replace the Finisher Control Board.
Replace the Stapler Unit Assembly.
Measure the voltage between Finisher Board connector P852-5
(see figure page 3-47) and Finisher frame ground.
Does the voltage measure 0 VDC?
Yes No
Test the wiring harness and the Finisher Control Board for continuity to
Finisher frame ground.
Replace the Finisher Control Board.
Replace the Stapler Unit Assembly.
Replace the Finisher Control Board.
Perform the Stapler "Ready" sensor test.
Service Quick Reference Guide - Diagnostics, Error Codes & Messages
Front Panel Message
2-73