Finisher Set Clamp Failure, Code 123 - Xerox 7750DXF - Phaser Color Laser Printer Service Manual

Finisher Set Clamp Failure, Code 123

The set clamp home sensor did not turn on within 2 seconds after the set clamp started
operation.
Troubleshooting References
Applicable Parts
Set Clamp Solenoid
Finisher Control Board
Troubleshooting Procedure
Step Actions and Questions
1 1. Check the Set Clamp home sensor in
diagnostics.
2. Does the value change from H to L
while rotating the actuator?
2 Does the solenoid energize when running
the Set Clamp Paddle test in diagnostics?
3 1. Run the Eject Forward Test and then
the Eject Release Test in diagnostics.
2. Does the set clamp paddle turn once?
4 Is +24 VDC present at P848A-10?
5
Is +24 VDC present at P848A-11?
6
Is +24 VDC present at test point 9 on the
finisher control board?
3-60
Wiring and Plug/Jack Map References
Yes
Go to step 2.
Go to step 3.
Replace the
finisher control
board.
Go to step 5.
Replace the
finisher control
board.
Replace the
finisher control
board.
Phaser 7750 Printer Service Manual
No
Use the
transmissive
Sensor procedure
to diagnose and
repair the sensor.
Go to step 4.
Go to step 4.
Go to step 6.
Replace the set
clamp solenoid.
Troubleshoot and
repair the
+24 VDC interlock
circuit.