LG LSC27914SB Owner's Manual - Page 114

Refrigerator apparently doesn't work

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20) Refrigerator apparently doesn't work NO. CHECKING FLOW Lamps are working? 1 Refrigerator and Freezer notch indicator are in OFF position? 2 Open the refrigerator door, then, in Display press "ULTRA ICE" key and "REF TEMP" key 3 simultaneously for more than 5 seconds. Wait some minutes and check the operation of refrigerator. Remove Cover PCB, then, check voltage in CON 201 as is shown in the picture. 4 RESULT & SERVICE ACTION Result YES NO Service Action Go to Step 2 Go to Step 4 Result YES NO Is now cooling? YES NO Service Action Go to Step 3 Refer to Poor Cooling section Service Action Normal, explain to the costumer Refer to Poor Cooling section Result 110 ~ 127 Vac 0 ~ 5 Vac Service Action Go to Step 5 Replace Powercord Check Voltage at Bridge Diode (BD1) input, as is shown in the picture. Take this measurement with caution. 5 Result 110 ~ 127 Vac 0 ~ 5 Vac Service Action Go to Step 6 Replace Main PCB - 113 -

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20) Refrigerator apparently doesn’t work
CHECKING FLOW
RESULT & SERVICE ACTION
Lamps are working?
1
2
NO.
5
4
3
Refrigerator and Freezer notch indicator are in
OFF position?
Open the refrigerator door, then, in Display press
“ULTRA ICE” key and “REF TEMP” key
simultaneously for more than 5 seconds. Wait some
minutes and check the operation of refrigerator.
Result
Service Action
Go to Step 2
NO
YES
Go to Step 4
Result
Service Action
Go to Step 5
0 ~ 5 Vac
110 ~ 127 Vac
Replace Powercord
Result
Service Action
Go to Step 3
NO
YES
Refer to Poor Cooling
section
Is now cooling?
Service Action
Normal, explain to the
costumer
NO
YES
Refer to Poor Cooling
section
Remove Cover PCB, then, check voltage in CON 201
as is shown in the picture.
Check Voltage at Bridge Diode (BD1) input, as is
shown in the picture. Take this measurement with
caution.
Result
Service Action
Go to Step 6
0 ~ 5 Vac
110 ~ 127 Vac
Replace Main PCB
- 113 -