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2-84
Phaser 7700 Color Laser Printer Service Manual
123
12-281
FINISHER ERROR 123 SET CLAMP FAILURE (Continued)
A
B
C
D
Measure the voltage at the Set Clamp Sensor pin 3 (violet) and Finisher frame
ground.
Does the voltage measure 0 VDC?
Yes No
Measure the voltage between the Finisher Control Board P849-7
(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 Set Clamp Sensor.
Replace the Set Clamp Sensor (RRP 75, on page 11-334).
Repair or replace the wiring harness between the Finisher Control Board and
the Set Clamp Sensor.
Replace the Finisher Control Board (RRP 77, on page 11-336).
Replace the Finisher Control Board (RRP 77, on page 11-336).
124
12-350
FINISHER ERROR 124 COMMUNICATION FAILURE
There are no diagnostics routines or test procedures for problems involving serial communica-
tions. It is recommended to address the following suspect components/assemblies in order.
•
Replace the Finisher Control Board (RRP 77, on page 11-336).
•
Replace the Engine Controller Board (RRP 42, on page 7-206).
•
Perform a continuity check on the pertinent wires / harnesses involved in serial
communication between the Printer and the Finisher [Refer to the Printer and
Finisher Wiring Diagrams].
125
12-399
FINISHER ERROR 125 STAPLE MODE LOGIC FAILURE
There are no diagnostics routines or test procedures for problems involving serial communica-
tions. It is recommended to address the following suspect components/assemblies in order.
•
Replace the Stapler Assembly (RRP 82, on page 11-342).
•
Replace the Finisher Control Board (RRP 77, on page 11-336).
•
Perform a continuity check on the wiring harness between the Finisher Control
Board and the Stapler [Refer to the Finisher Wiring Diagram].
Error
Code
Chain /
Link
Front Panel Message
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