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4-3-2 Fuser Error
Measure the resistance
at the both ends of AC
line with covers open.
Less than 10W?
Remove the covers.
AC is being supplied?
The voltage
of pin #52of U4
(CPU) on the engine board
is about 3.0V when
printing?
END
Samsung Electronics
NO
YES
NO
YES
NO
YES
Thermostat is open due to the heat etc.
-> Replace the thermostat.
Re-assemble the top
cover and close it.
Thermistor, connecting point or engine
board defected. -> Repair/replace the
component/board.
Troubleshooting
Check the PCI and fusing
control part and CN202
on the engine board.
-> Replace the component
or replace the engine
board.
4-13
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