LG LFXC24726S, Service Manual

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Refrigerator room lamp doesn’t work
1
Check the Refrigerator door switch.
Does it feel sticky?
Yes
No
7
Explain to customer
Change the
Door S/W
4
Check the LED Lamp voltage
Is voltage 12V?
No
Yes
Change the
LED Lamp
Resistance [Ω]
Door S/W
Normal 0
Push S/W Infinity
Voltage [V]
CON6
28
th pin ~ 30 th pin
12V
2
Check the door S/W resistance.
Is it correct compared with table?
No
Yes
Change the
Door S/W
Door S/W
3
Check the PCB Voltage.
Is CON6 28 th pin ~ 30 th pin
voltage 12V?
No
Yes
Change the
PCB
5
Check the LED Lamp voltage.
Is it 0~2V? (While door closed)
No
Yes
Change the
Door S/W
6
Check the LED Lamp voltage.
Is it 12V? (While door open)
No
Yes
Change the
LED Lamp
CON6
LED Lamp
LED Lamp