Xerox 7700DX - Phaser Color Laser Printer Service Manual page 110

Error Chain /
Code
120 12-260
121 12-262
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
Replace the Eject Clamp Home Sensor (RRP 76, on page 11-335).
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 11-336).
Replace the Finisher Control Board (RRP 77, on page 11-336).
2-80 Phaser 7700 Color Laser Printer Service Manual
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FINISHER ERROR 120 EJECT CLAMP HOME SENSOR ON
FAILURE
FINISHER ERROR 121 EJECT CLAMP HOME SENSOR OFF
FAILURE
Measure the voltage between the Finisher Control Board P849-4
(see figure page 2-46) and Finisher frame ground.
Does the voltage measure 0 VDC?
Yes No
Replace the Finisher Control Board (RRP 77, on page 11-336).
Repair or replace the wiring harness between the Finisher Control
Board and the Eject Clamp Home Sensor.
Front Panel Message