Troubleshooting
4-30
Samsung Electronics
Less than 10W?
AC is being supplied?
The voltage
of pin #208 of U5
(CPU) on the Main board
is about 2.3V when
printing?
END
Thermostat is open due to the heat etc.
-> Replace the thermostat
Check the PCI and fusing
control part and CN502
on the SMPS
-> Replace the component
or replace the SMPS
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 defect -> Repair/replace the
component/board
NO
NO
NO
YES
YES
YES
Fuser Error