Power Supply Fan Failure - Xerox Phaser 7400 Service Manual

Power Supply Fan Failure

The LVPS Fan has failed.
Applicable Status Code:
Code U9: LVPS Fan Failure
Initial Actions:
Clear any obstructions from the LVPS Fan vent.
Cycle the printer's power.
If the problem persists follow the procedure below.
Troubleshooting Reference Table
Applicable Parts
LVPS Fan, PL3.1.2
LVPS, PL3.1.4
Engine Control Board, PL1.1.4
Troubleshooting Procedure Table
Step Actions and Questions
1 Test the LVPS Fan.
Run the Service Diagnostics Power Supply
Fan test.
Does the Fan operate correctly.
2 Check the LVPS Fan connection.
Is FAN1 securely connected?
3 Verify +24 volts is available to the Fan.
Disconnect FAN1.
Is there +24 volts at FAN1?
3-100
Wiring and Plug/Jack References
Print Engine Map 6 (page 10-9)
Print Engine LVPS (page 10-39)
Yes
Replace the Engine
Control Board
(page 8-112).
Go to Step 3.
Replace the LVPS
Fan (page 8-124).
Phaser 7400 Color Printer Service Manual
No
Go to Step 2.
Reconnect the
Fan.
Replace the LVPS
(page 8-121).