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Chapter 3 Troubleshooting Display Messages
EXHAUST FAN FLT
Exhaust Fan Fault. Sensors
cannot detect current in the
fan circuit.
1. Cycle power. If the message
appears, press CLEAR.
2. Check that the exhaust fan is
connected to exhaust fan cable
connector J307. Connect the fan
cable connector.
3. Power off the printer. Remove the
paper path. Disconnect connector
P107 from the controller board.
Test connector P107/EHF for
shorts or opens. (See the Main
Wire Harness Test Tables in
Appendix A.) Replace
components that fail test.
4. Make sure connector P107/EHF
has a good connection at J107 on
the controller board.
5. Inspect for obstructions of
airways and vents. Check for
items beneath the printer
blocking cabinet vents. Remove
obstructions. Make sure cabinet
exhaust fan vents are not
blocked.
6. Power on the printer. Check for
fan operation. If the message
appears or the fan doesn’t work,
replace the exhaust fan.
7. Power on the printer. If the
message appears, replace the
controller board. Record the
message and return it with
defective board.
Table 2. Message List
Message Explanation Solution
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