Xerox Phaser 7400 Service Manual page 158

Troubleshooting Procedure Table (Continued)
Step Actions and Questions
5 Check for +24 V to the Shift Motor.
Disconnect CN6 from the Finisher Control
Board.
Is there +24 V CN6-1 <=> CN6-2?
6
Test the Shift Motor Clock Sensor.
Run the Shift Motor Clock Sensor test.
Does the sensor function correctly?
7 Test the sensor signal.
Does the voltage change on CN15-5 when
the sensor is actuated?
3-48
Yes
Replace the Shift
Motor.
Go to Step 8.
Replace the
Finisher Control
Board.
Phaser 7400 Color Printer Service Manual
No
Replace the
Finisher Control
Board. If the error
persists, go to
Step 6.
Replace the
sensor.
Replace the wiring.
If the error persists,
replace the Engine
Control Board
(page 8-112).