LG LFXS26973 Series Service Manual page 55

Freezer room upper 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
S/W Resistance [
Open
Door
Close
Yes
3
Check the PCB Voltage.
Is CON3 14 th pin ~ 13 th
voltage 12V?
CON3
14 th pin ~ 13 th Pin
Yes
Change the
Yes
Door S/W
Change the
No
Door S/W
]
Infinity
1
Change the
No
PCB
pin
Voltage [V]
12V
4
Check the LED Lamp voltage
Is voltage 12V? (While door open)
Yes
5
Explain to customer
- 55 -
Change the
No
LED Lamp