Samsung MultiXpress K4 Series Service Manual page 409

b) Check if the AC connection of the Halogen lamp is disconnected or contaminated.
c) Check if the
d) Check if the contact type
4) If the problem persists, replace the Fuser
5) If the problem persists, replace the main board(JC92–02746A) or FDB
JC44-0021A)or SMPS(220V : JC44-00100C, 110V : JC44-00093C)
Copyright© 1995-2017 SAMSUNG. All rights reserved.
thermistat(4712-001098)
thermistor(1404–001567)
unit(220V : JC91–01163A / 110V : JC91–01164A).
is disconnected.
or Non-contact type thermistor(1404–001453)is broken.
4. Troubleshooting
board(220V : JC44-00211A, 110V :
4-174