Samsung RF23R6 Series Service Manual page 98

TROUBLESHOOTING
2) Ice Water(FZ) Valve
PIN Number
☞ Checking method of voltage Based on
1) Check the voltage of IC71-"1" ↔ "8"
(same voltage as IC01 "#20)
- ICE Water valve waiting (about 0V)
2) IC71-"16" ↔ "8"
- ICE Water valve Waiting (about 12V±0.8V)
- ICE Water valve Operating (about 0.7V±0.5V)
3) Check the voltage of Water Valve operating
(AC voltage)
=> The Relay RY74 operating. CN70_1-"3" ↔
CN70-"7"
- ICE Water valve waiting (about AC 0V)
Start
Is the confirming
sound of the valve operation heard when
Ice maker test switch pushed?
NO
Does Main PCB IC01
MICOM #20 voltage change
5V/0V?
YES
Does Main PCB IC01
MICOM #80 voltage have
high(5V) output?
NO
Does
Main PCB IC71 #16 have about 0.7V
output?
YES
Is the contact
point of main PCB RELAY RY74
normal?
YES
MAIN PCB normal.
- Need to check the other parts
① Check the wire between Ice water valve↔MAIN PCB
② Ice water valve itself has trouble or bad contact of connector.
③ Check the connection hose.
98
YES
Normal
(Check Ice water valve hose.)
NO
Check soldering short
/Replace PCB.
NO
Check soldering short
/Replace PCB.
NO
Check soldering short
/Replace PCB.
NO
Check soldering short
/Replace PCB.