917-Fuser Heater Fan Service Check - Lexmark C720 Service Manual

5024-001
917—Fuser Heater Fan Service Check
FRU
1 Check Connector
2 Fuser Heater Fan
(HTFAN)
3 IOD1 P.W.B. Board
4 Main Engine (MCTL
P.W.B.) Board
Heater Fan HTFAN
2-52
Service Manual
Action
Ensure the fuser heater fan motor
connector is properly connected to
DCN14 on the IOD1 P.W.B. board.
Ensure DCN1 on the IOD1 P.W.B. board
and 11CN on the main engine (MCTL
P.W.B.) board are connected properly.
Check the voltage between DCN14-10
and DCN14-11.
If the voltage is +24V, replace the fuser
heater fan (HTFAN).
Check the voltage between DCN1-35 and
DCN1-44.
If the voltage is +24V, replace the IOD1
P.W.B. board.
If the problem still exists, replace the main
engine (MCTL P.W.B.) board.