LG LFXS30786 Series Service Manual page 65

Refrigerator room lamp doesn't work
1
The Switch senses if the door is
open or close.
When the door open, lamp On
When the door Close, lamp Of f
No
2
Check the door S/W resistance.
Is it correct compared with table?
Resistance [Ω]
No magent near
the switch
Door S/W
Magnet is near
the switch
Yes
3
Check the PCB Voltage.
Is CON6 28 th pin & 30 th pin
voltage 11.4~12.6V?
(While door open)
CON6
Yes
4
Explain to
Check the PCB Voltage.
Yes
customer
Is CON6 28
voltage 0~2V? (While door
closed)
Change the
No
Door S/W
5
Check the LED Lamp voltage
Is voltage 11.4 ~ 12.6V?
(While door open)
Top LED Lamp
Infinity
0
Change the
No
PCB
Side LED Lamp
6
Change the LED Lamp
- 65 -
No
th pin & 30 th pin
CON6
Yes
No
Yes
Change the
PCB
Check LED
Lamp
Connection