3-74 Phaser 6121MFP Service Manual
Error Messages and Codes
004E LVPS Fan Failure
Possible causes:
• The Power Supply Cooling Fan Motor does not rotate evenly even after the
lapse of a given period of time while it is being started.
• The motor lock signal remains HIGH for a given period of consecutive time
while the Power Supply Cooling Fan Motor is being rotated.
Initial Actions
Power down and reboot the printer.
Procedure
Troubleshooting Reference Table
Applicable Parts Wiring and Plug/Jack References
■ Power Supply Cooling Fan Motor,
PL12.0.11
■ Engine Control Board, PL13.0.20
■ Power Supply, PL13.0.17
■ Board Locations (page 2-10)
■ Motors, Fans, and Solenoids
(page 2-12)
■ Map 1 - Engine Control Board
Plug/Jack Locator (page 10-5)
■ Engine Control Board Wiring
(page 10-14)
Troubleshooting Procedure Table
Step Action and Questions Yes No
1 Check the High Voltage Board
connectors CN1 and CN2, and the
Engine Control Board connector P/J17.
Are the connectors seated properly?
Go to step 2. Reseat the
connector(s). If
the problem
persists, go to
step 2.
2 Check the Power Supply Cooling Fan
Motor control signals at CN2.
Are the signals operating correctly?
Replace the
motor
(page 8-95). If
the problem
persists, go to
step 3.
Go to step 3.
3 Check the Power Supply Cooling Fan
Motor control signals at PJ17 on the
Engine Control Board.
Are the control signals operating
correctly?
Replace the
High Voltage
Board
(page 8-57). If
the problem
persists, go to
step 4.
Go to step 4.
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