LG LFC20770SB Service Manual page 61

2) Freezer LED Lamp not working
No Checking flow
Check for loose connection in CON6
1
Check Voltage between Red and Black
2
wires.
Check for loose connection in harness
3
joint, located in Case Main PCB.
Result & SVC Action
Result
Firmly plugged
Plug firmly, then check again. Problem
Loose
Result
11~12VDC
Other Value
Result
Firmly plugged
Plug firmly, then check again. Problem
Loose
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SVC Action
Go to step #2
persist?
YES: go to step #2
NO: explain to customer.
SVC Action
Go to step #3
Replace Main PCB.
SVC Action
Go to step #4
persist?
YES: go to step #4
NO: explain to customer.