Troubleshooting
4-13
Samsung Electronics
After printing
completed, any error
related fuser?
Both ends
of thermostat
open?
Replace thermostat
and re-test.
Replace the contol
component on engine
board.
Check any contact
problem in thermistor
and repair.
The machine
placed under the
severe low tempera-
ture for a long
time?
Place the machine
at normal
temperature and
re-test.
While printing,
the voltage of pin 60
of U17(CPU) on controller
board is 1.5V
~2.0V?
Thermistor’s
contact is OK?
Open the top
cover. When black
printing, is the fuser NIP
width is 3.0-
3.5mm?
The paper used is too
thick or contains too
much cotton in it.
-> Re-test with the
recommended paper.
Check if the hardness of
P/R, and spring force is OK?
(hardness: 24 degree,
spring’s force: 3 Kg)
Re-assemble
thermistor.
NO
NO
NO
NO
NO
NO
YES
YES
YES
YES
YES
YES
4-3-12 Poor Fusing Grade
Download Service Manual And Resetter Printer at http://printer1.blogspot.com