LG LRSOC2306 Series Service Manual page 77

Only for Wi-Fi models
Communication Error (CO E)
1
Check the loose connection
2
Check the voltage in display.
Is CON101 voltage as below?
CON101
16 pin ~ 18
th
CON101
16 th pin ~ 10
Yes
3
Check the voltage in display.
Is CON101 voltage as below?
CON101
16
th
No
Check the
Hinge (loose
connection)
No
Change the
Main PCB
Voltage [V]
11.5V~12.5V
pin
th
5V~7.5V
st pin
Change the
Yes
Display PCB
Voltage
[V]
Not 0V,
pin ~ 14 pin
rd
5V
4
Check the voltage in display.
Is CON101 voltage as below?
No
5
Check the voltage in Main PCB.
Is CON5 15 th pin ~ 17
voltage 0V or 5V?
CON5
No
6
Check the voltage in Main PCB.
Is CON5 15 pin ~ 18
th
voltage 0V or 5V?
CON5
No
7
Explain to customer
80
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Change the
Yes
Main PCB
Voltage
[V]
CON101
Not 0V,
16 pin ~ 12 pin
th nd
5V
Change the
Yes
Display PCB
th pin
Voltage
[V]
CON5
Not
15 th ~ 17 th pin
0V, 5V
Change the
Yes
Main PCB
pin
th
Voltage
[V]
CON5
Not
15 ~ 18 pin
th th
0V, 5V