LG LFXS29626 Series Service Manual page 53

Refrigerator room lamp doesn't work
1
Check the Ref rigerator door switch.
Does it f eel sticky?
No
2
Check the door S/W resistance.
Is it correct compared with table?
Door S/W
Resistance [Ω]
Normal
Door S/W
Push S/W
Yes
3
Check the PCB Voltage.
Is CON6 1 th pin ~ 2 th pin
voltage 12V?
CON8
CON6
1 th pin ~ 2 th pin
Yes
Change the
Yes
Door S/W
Change the
No
Door S/W
0
Infinity
Change the
No
PCB
Voltage [V]
12V
4
Check the LED Lamp voltage
Is voltage 12V?
LED Lamp
Yes
5
Check the LED Lamp voltage.
Is it 0~2V? (While door closed)
LED Lamp
Yes
6
Check the LED Lamp voltage.
Is it 12V? (While door open)
Yes
7
Explain to customer
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Change the
No
LED Lamp
Change the
No
Door S/W
Change the
No
LED Lamp