Xerox Phaser 7400

3-100 Phaser 7400 Color Printer 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 Wiring and Plug/Jack References
■ LVPS Fan, PL3.1.2
■ LVPS, PL3.1.4
■ Engine Control Board, PL1.1.4
■ Print Engine Map 6 (page 10-9)
■ Print Engine LVPS (page 10-39)
Troubleshooting Procedure Table
Step Actions and Questions Yes No
1
Test the LVPS Fan.
Run the Service Diagnostics Power Supply
Fan test.
Does the Fan operate correctly.
Replace the Engine
Control Board
(
page 8-112).
Go to Step 2.
2
Check the LVPS Fan connection.
Is FAN1 securely connected?
Go to Step 3. Reconnect the
Fan.
3
Verify +24 volts is available to the Fan.
Disconnect FAN1.
Is there +24 volts at FAN1?
Replace the LVPS
Fan (
page 8-124).
Replace the LVPS
(
page 8-121).