LG LFXS24553S Service Manual page 55

Refrigerator room lamp doesn't work
1
Check the Freezer 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]
Normal
Door
S/W
Push S/W
Yes
3
Check the PCB Voltage.
th th
Is CON6 20 pin ~ 15 pin
voltage 12V?
CON6
Voltage [V]
CON6
20 th pin ~15 th pin
Yes
Change the
Yes
Door S/W
Change the
No
Door S/W
Infinity
0
Change the
No
PCB
12V
4
Check the LED Lamp voltage.
Is it 0~2V? (While door closed)
Yes
5
Check the LED Lamp voltage.
Is it 12V? (While door open)
Yes
6
Explain to customer
Change the
No
Door S/W
Change the
No
LED Lamp