Samsung CLX-8640 series Service Manual page 407

d) Check if the thermostat(4712–001093) is connected.
e) Check if the center and side
the resistance value between the common-center and common-side.)
f) Check if the thermistor is defective.
6) If the step5 has no problem, replace the fuser
7) If the problem persists, replace these parts in regular sequence.
• Fuser Drive Board :
• Main board :
• SMPS board :
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lamps(4713-001651 : 110V / 4713-001655 :
JC44-00210A(110V) / JC44-00211A(220V)
JC92-02516A
JC44-00149B(110V) / JC44-00150B(220V)
unit(JC91-01120A(110V) /
4. Troubleshooting
220V) are in short status. (Measure
JC91-01121A(220V)).
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