Communication Error - LG GR-P247C Service Manual

Communication Error

Is it displayed under picture?
Yes
Is the connection loose?
CON6
No
Is the output voltage
between pin4 and pin5 of
CON101 like as below?
Pin5 Pin4
Display PCB Voltages
Test Point Result
Pin4 To Pin5
0 ~ 5V
No
Yes Reconnect
Replace
YES
Display PCB
Is the output voltage
between pin3 and pin5 of
CON101 like as below?
Pin5 Pin3
Display PCB Voltages
Test Point Result
pin3 To pin5
0 ~ 5 V
No
Is the connection loose?
Yes
Is the connection loose?
(Hinge)
Yes
45
Replace
Yes
Display PCB
No
Reconnect
No
Reconnect