LG LRSOC2306 Series Service Manual page 61

Freezer room lamp doesn't work
1
Check the Refrigerator door switch.
Does it feel sticky?
No
2
Check the door S/W resistance.
Is it correct compared with table?
Door S/W
Resistance [Ω]
Door S/W
Door Close
Yes
3 Check the PCB Voltage.
Is CON3 19 th pin ~ 20 th pin
voltage 12V?
INSPECTION
-
DOOR
POINT
Close
CON8
19 pin ~ 20 pin
th th
Open
Yes
4
Change the
Yes
Door S/W
Check the LED Lamp voltage.
Is it 0~2V? (While door closed)
Change the
No
Door S/W
5
Check the LED Lamp voltage.
Is it 12V? (While door open)
6
Explain to customer
0
Change the
No
PCB
Voltage [V]
0~2V
12V
64
No
Yes
No
Yes
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Change the
Door S/W
Change the
LED Lamp