916-Ozone Fan Service Check - Lexmark C720 Service Manual

5024-001
916—Ozone Fan Service Check
FRU
1 Check Connector
2 Ozone Fan Motor
(OZFAN)
IOD2 P.W.B. Board
3 Main Engine (MCTL
P.W.B.) Board
Fan Motor OZFAN
Action
Ensure the ozone fan motor connector is
properly connected to ECN5 on the IOD2
P.W.B. board.
Ensure connectors ECN1 on the IOD2
P.W.B. board and 12CN on the main
engine (MCTL P.W.B.) board are properly
connected.
Check the voltage between ECN3-1 and
ECN3-2 on the IOD2 P.W.B. board.
If the voltage is +24V, replace the ozone
fan (OZFAN).
Check the voltage tween ECN1-9 and
ECN2-8 on the IOD2 P.W.B. board.
If the voltage is less than +24V, replace
the IOD2 P.W.B. board.
If the problem still exists, replace the main
engine (MCTL P.W.B.) board.
Diagnostic Information
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