Xerox Phaser 7700 Service Manual page 101

Error Chain /
Code Link
118 12-256 FINISHER ERROR 118 STAPLER FRONT CORNER SENSOR
ON FAILURE (Continued)
119 12-257 FINISHER ERROR 119 STAPLER FRONT CORNER SENSOR
OFF FAILURE (Continued)
A B C
Does the voltage toggle between +5 VDC and 0 VDC?
Yes No
Measure the voltage at Front Corner Sensor pin 1 (gray).
Does the voltage measure +5 VDC?
Yes No
Measure the voltage between the Finisher Control Board P850A-3
and Finisher frame ground.
Does the voltage measure +5 VDC?
Yes No
Replace the Finisher Control Board (RRP 77, on page 11-316).
Repair or replace the wiring harness between the Finisher Control
Board and the Front Corner Sensor.
Measure the voltage at the Front Corner Sensor pin 3 (violet) and Finisher
frame ground.
Does the voltage measure 0 VDC?
Yes No
Measure the voltage between the Finisher Control Board P850A-1
and Finisher frame ground.
Does the voltage measure 0 VDC?
Yes No
Replace the Finisher Control Board (RRP 77, on page 11-316).
Repair or replace the wiring harness between the Finisher Control
Board and the Front Corner Sensor.
Replace the Front Corner Sensor.
Repair or replace the wiring harness between the Finisher Control Board and the
Front Corner Sensor.
Replace the Finisher Control Board (RRP 77, on page 11-316).
Replace the Finisher Control Board (RRP 77, on page 11-316).
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Phaser 7700 Color Printer
Front Panel Message