Troubleshooting
4-16
Samsung Electronics
Less than 10ohm?
AC is being supplied?
The voltage
of pin #60 of U17
(CPU) on the controller
is about 2.0V when
printing?
END
Thermostat is open due to the heat etc.
-> Replace the thermostat.
Check the fusing control
part and CN501on the
engine board.
-> Replace the component
or replace the engine
board.
Measure the resistance
at the both ends of AC
line with covers open.
Remove the covers.
Re-assemble the top
cover and close it.
Thermistor, connecting point or engine
board defected. -> Repair/replace the
component/board.
NO
NO
NO
YES
YES
YES
4-4-2 Fuser Error
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