Samsung RB195BSSB Service Manual - Page 69

When Ice Water Valve does not operate Option

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13-9) When Ice Water Valve does not operate (Option) Pre-Check 1. While disassembling,make sure to cut off water since the ice water valve is directly connected with water. 2. Make sure to avoid the electric shock while disassembling because one end of wire is applied with power. 3. Check the operation of the ice water valve only after the ice maker test switch is pressed. (F-Room Ice Maker) ICE WATER VALVE OPERATION CHECK Is the confirming sound of the valve operation heard when Ice Maker Test S/W pushed? YES Does Main PCB MICOM #31 have high (+5V)output? YES NO Normal (check the ice water valve hose) NO Check short-out Soldering / PCB change - Reference * Load terminal check-up method Does Main PCB IC70 #18 have low (0V)output? YES Is the contact point of main PCB RELAY RY71 normal? YES Main PCB Normal - Check other parts ① Wire between ice water value and main PCB ② Water Value defect or Connection Connector contact defect ③ Check Connection Hose defect NO Soldering short check/PCB change NO Soldering short check/PCB change 69

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13-9) When Ice Water Valve does not operate (Option)
1. While disassembling,make sure to cut off water since the ice water valve is directly
connected with water.
2. Make sure to avoid the electric shock while disassembling because one end of wire is
applied with power.
3. Check the operation of the ice water valve only after the ice maker test switch is pressed.
(F-Room Ice Maker)
Pre-Check
NO
NO
NO
NO
Normal (check the
ice water valve hose)
Is the
confirming sound of
the valve operation heard when
Ice Maker Test S/W
pushed?
Does Main
PCB MICOM #31
have high (+5V)output?
Does Main PCB IC70 #18
have low (0V)output?
Is the contact
point of main PCB RELAY
RY71 normal?
ICE WATER VALVE
OPERATION CHECK
YES
Check short-out
Soldering / PCB change
Soldering short
check/PCB change
YES
Soldering short
check/PCB change
- Reference
* Load terminal
check-up method
YES
Main PCB Normal
- Check other parts
①
Wire between ice water value
and main PCB
②
Water Value defect or
Connection Connector contact
defect
③
Check Connection Hose defect
YES