LG LTNS16121V /00 Service Manual page 50

- LED is not working (Multiduct)
No Checking
Disconnect the magnetic switch and confirm
4
whether there is continuity between the
terminals. When you close magnet to the
magnetic switch, is there continuity?
NOTE: For detect continuity, the magnet
and switch must be aligned.
*No: Replace the door magnetic switch.
Conect the magnetic switch and check on the
5
PCB, el voltage for CON8 (pin 7th~8th).
While the door is open, is the voltage value
of 5V?
CON8
Refrigerator door switch
7th~8th
Check the voltage of CON8 (7th~8th).
6
While the door is closed, is the voltage
value of 0V?
CON8
Refrigerator door switch
7th~8th
CON8
Voltage [ V ]
Open 5V
CON8
Voltage [ V ]
5V
Closed
Result and SVC countermeasure
Result
11~12 VDC Normal
0 V
No normal
Result
5 V
No 5V
Resultado Respuesta de SVC
0 V
No 0V
50
SVC Support
Go to step 5
Replace PCB
SVC Support
Go to step 6
Replace PCB
Go to step 7
Replace PCB