Samsung RF265AB Service Manual page 59

TROUBLESHOOTING
8) If Pantry Room Damper Heater has trouble
ERROR Code
Measure the resistance
between - after
CN90 connector open 145ohm
Initial
MICOM
power On
#37
4.0V ~
condition
4.5V
Checking method of Pantry Room Damper
resistance CN91#1(Black)
** : Open(wire disconnection, heater
disconnection) trouble 0 : Short trouble
7%
Damper Damper
heater off heater On
4.0V ~
0V
4.5V
#2(Brown)
Start Start
NO
Is Damper Heater
normal?(about145ohm)
YES YES
NO
Is MAIN PCB connector
(CN91) inserted correctly?
YES YES
NO
Is the input voltage of
IC02 MICOM #37 normal?
YES YES
Normal(recheck)
60
Replace Damper
Bad contact of connector/ insert correctly
1) Recheck the wire
2) Replace PCB MAIN