LG LFXS26973 Series Service Manual page 43

Communication Error (CO E)
1
Check the loose connection
No
2
Check the voltage.
Are CON101 7 pin ~ 6
th
voltage 12V?
And CON101 3 rd pin ~ 6
Housing
CON101 7 pin ~ 6 pin
th th
CON101 3 pin ~ 6
rd th
Yes
3
Check the voltage.
Is CON101 5 pin ~ 6
th th
voltage 0V or 5V?
Voltage
Housing
CON101
5 th pin ~ 6 th pin 0V, 5V
No
Check the
No
Hinge (loose
connection)
pin
th
Change the
Main PCB
th pin ?
Voltage [V]
12V
pin 5V
Change the
Yes
Display PCB
pin
[V]
Not
4
Check the voltage.
Is CON101 4 pin ~ 6
th
voltage 0V or 5V?
Housing
CON101
4 pin ~ 6 pin
th th
No
5
Check the voltage.
Is CON6 8 th pin ~ 9
voltage 0V or 5V?
No
6
Check the voltage.
Is CON6 10 pin ~ 9
th
voltage 0V or 5V?
No
7
Explain to customer
- 43 -
Yes
pin
th
Voltage
[V]
Not
0V, 5V
Yes
th pin
Voltage
Housing
CON6
10 th pin ~ 9 th pin
Yes
pin
th
Housing
CON6
10 pin ~ 9 pin
th th
Change the
Main PCB
Change the
Display PCB
[V]
Not
0V, 5V
Change the
Main PCB
Voltage
[V]
Not
0V, 5V