3-30 Phaser 7400 Color Printer Service Manual
5
Check for +5 V to the Registration Sensor
Board.
Disconnect the harness from CSNS on the
Engine Control Board.
Is there +5 V across CSNS-14 <=>
ground?
Go to Step 6. Replace the
Engine Control
Board
(
page 8-112).
6
Check all pins on the CSNS Harness for
continuity
Is the harness conductive?
Replace the
Registration
Sensor Board
(
page 8-148).
Replace the
harness.
7
Test the Transfer Unit Motor.
Run the Service Diagnostics Transfer Belt
Motor test.
Does the motor function correctly?
Replace the
Transfer Unit.
Replace the motor
(
page 8-103).
Troubleshooting Procedure Table (Continued)
Step Actions and Questions Yes No
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