LG LFX25978 Series, Service Manual

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9. Troubleshooting Without Error Display
9-1 Cube mode doesn’t work
No
1
2
Checking flow
Check the loose connection.
Check the Black to White.
(While pushing the lever S/W)
Result & SVC Action
<CON2>
3 Check the RED to White Red.
(While pushing the lever S/W)
4 Check the resistance value.
<CON1> <CON3>
<Ice Maker>
<Geared Motor> <Dispenser Motor>
(2) (1)
(3)
(4)
Pushing
Not
pushing
112 ~ 115 V
Other
0 ~2 V
Other
Go to the 3
Change PCB
Go to the 3
Change PCB
Lever s/w Result SVC Action
Pushing
Not
pushing
9 ~ 12 V
Other
0 ~2 V
Other
Go to the 4
Change PCB
Go to the 4
Change PCB
Lever s/w Result SVC Action
(1) to (2)
(3) to (4)
31.1 ~ 42.1
Other
9.9 ~ 12.1
Other
It’s normal
Replace
Geared Motor
It’s normal
Replace
Dispenser Motor
Point Result SVC Action