Power Supply Fan Failure
Error Codes that Apply
121
1. Clear any obstructions from the LVPS Fan vent.
2. Cycle the printer's power.
3. If the problem persists follow the procedure below.
1. LVPS Fan
2. LVPS
3. Engine Control Board
Steps Action Taken Yes No
1
Test the LVPS Fan.
Run the Motor Clutch Test
FAN POWER
Does the Fan operate correctly?
Replace the Engine
Control Board
Go to Step 2.
2
Check the LVPS Fan connection.
Is the fan securely connected?
Go to Step 3.
Reconnect the
Fan.
3
Verify +24 volts is available to the
Fan. Disconnect the Fan and test at
connector. Is there +24 volts at the
Fan connector?
Replace the LVPS Fan
Replace the LVPS
Initial Troubleshooting Actions to Take
Parts of the Printer that Apply
Troubleshooting Procedure
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