Xerox Phaser 7700 Service Manual page 103

Error Chain /
Code Link
120 12-260 FINISHER ERROR 120 EJECT CLAMP HOME SENSOR ON
FAILURE
121 12-262 FINISHER ERROR 121 EJECT CLAMP HOME SENSOR OFF
FAILURE
A B C D
Measure the voltage at the Eject Clamp Home Sensor pin 3 (violet) and
Finisher frame ground.
Does the voltage measure 0 VDC?
Yes No
Measure the voltage between the Finisher Control Board P849-4
(see figure page 3-47) 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 Eject Clamp Home Sensor.
Replace the Eject Clamp Home Sensor (RRP 76, on page 11-315).
Repair or replace the wiring harness between the Finisher Control Board and
the Eject Clamp Home Sensor.
Replace the Finisher Control Board (RRP 77, on page 11-316).
Replace the Finisher Control Board (RRP 77, on page 11-316).
2-80
Phaser 7700 Color Printer
Front Panel Message