Xerox Phaser 7400

Error Messages and Codes 3-163
Duplex Unit Fan Failure
The Duplex Fan rotation signal indicates the Duplex Fan has stopped rotating.
Applicable Status Code:
Code 918: The Duplex Fan has failed.
Initial Actions:
■ Cycle the printer's power.
■ If the problem persists follow the procedure below.
Troubleshooting Reference Table
Applicable Parts Wiring and Plug/Jack References
■ Duplex Unit Fan
■ Duplex Unit Control Board
■ Duplex Unit
■ Print Engine Map 5 (page 10-8)
■ Print Engine Motor Driver Board (5/6) (page 10-35)
■ Options Map 4 Duplex Unit Controller Board
■ Options Duplex Unit Motors and Solenoid
Troubleshooting Procedure Table
Step Actions and Questions Yes No
1
Check the Duplex Unit connector for
damage.
Is the connector damaged?
Replace the
connector.
Go to Step 2.
2
Test the Duplex Unit Fan.
Run the Service Diagnostics Duplex Fan
test.
Does the Fan function correctly?
Go to Step 3. Replace the
Duplex Unit. If the
error persists, go
to Step
3.
3
Check all pins on the DUPLEX Harness for
continuity.
Disconnect the DUPLEX Harness.
Is the DUPLEX Harness conductive?
Replace the Motor
Driver Board
(
page 8-141). If the
error persists, go to
Step 4.
Replace the
DUPLEX Harness.
4
Check all pins of the DRV1 harness for
continuity.
Disconnect the DRV1 ribbon cable.
Is the cable conductive?
Replace the Engine
Control Board
(
page 8-112).
Replace the DRV1
Harness.