Failure In The Fuser Motor - Xerox Phaser 7400 Service Manual

Failure in the Fuser Motor

The Fuser Motor has stopped rotating.
Applicable Status Code:
Code 928:
The Fuser Motor has failed.
Initial Actions:
Cycle the printer's power.
If the problem persists follow the procedure below.
Troubleshooting Reference Table
Applicable Parts
Fuser Motor, PL2.1.9
Motor Driver Board, PL2.1.10
Engine Control Board, PL1.1.4
Troubleshooting Procedure Table
Step Actions and Questions
1 Test the Fuser Motor.
1. Close the Interlock Switches for test.
2. Run the Service Diagnostics Fuser
Motor test.
Does the motor operate?
2 Check for +24 V to the Fuser Motor.
Is the +24 V across DCHEAT- 3 <=>
ground?
3 Check Motor Driver Board POW24
connector for 24 V.
1. Disconnect POW24.
Is the +24 V across POW24 pins 1 and 2?
4
Check for 24 V at the LVPS
1. Disconnect CN2 on the LVPS.
Is the +24 V across pins 1 and 2?
5 Check all pins of the DRV1 harness for
continuity.
Disconnect the DRV1 ribbon cable.
Is the cable conductive?
3-168
Wiring and Plug/Jack References
Print Engine Map 5 (page 10-8)
Print Engine Motor Driver Board (2/6) (page 10-32)
Print Engine Motor Driver Board (6/6) (page 10-36)
Yes
Complete.
Go to Step 5.
Replace the Motor
Driver Board
(page 8-141).
Replace the
POW24 Harness.
Replace the Engine
Control Board
(page 8-112).
Phaser 7400 Color Printer Service Manual
No
Replace the motor
(page 8-106). If the
error persists, go
to Step 2.
Go to Step 3.
Go to Step 4.
Replace the LVPS
(page 8-121).
Replace the DRV1
Harness.