LG GC-B207GLQV

Replace
Display
PCB
Display PCB
Is the voltage between pins 2 and
pin 3 of CON101?
Yes
No
Yes
Reconnect
Is the joint connection
loose in the hinge?
Yes
No
Communication Error
MAIN
PCB
DISPLAY
PCB
16
15
17
18
Cover Hinge
BN(Rx)
RD(Tx)
BO(GND)
WH/BK(12V)
BN(Tx)
RD(Rx)
BO(GND)
WH/BK(12V)
1
4
3
2
4
3
1
2
CON6 CON101
4
3
1
2
Rx: Receive
Tx: Send
Wiring diagram
Test Point Result
pin2 To pin3 1V to 4 V
Send signal Voltage
N0
Yes
Display PCB
Is the voltage between pins 1
and pin 3 of CON101?
Yes
Test Point Result
pin1 To pin3 1 V to 4 V
Receive signal voltage
N0
Reconnect
Pin3
Pin2
Pin3
Pin1
Is it displayed under picture?
Is the connection loose ?(CON101)
Replace
Display
PCB
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