LG LSFXC2476 Series Service Manual page 55

Communication Error (CO E)
1
Check the loose connection
2
Check the voltage.
Is CON101 1 st pin ~ 2 nd pin
voltage 12V?
CON101
6 th
CON101
Yes
3
Check the voltage.
Is CON101 2 nd pin ~ 3 rd pin
voltage 0V or 5V?
CON101
5 th
CON101
No
Check the
No
Hinge (loose
connection)
Change the
Main PCB
Voltage[V]
11.4~12.6V
pin~7 th pin
Change the
Yes
Display PCB
Voltage[V]
Not 0V, 5V
pin~6 th pin
4
Check the voltage.
Is CON101 2 nd pin ~ 4
voltage 0V or 5V?
CON101
No
5
Check the voltage.
Is CON5 4 th pin ~ 6 th
voltage 0V or 5V?
No
6
Check the voltage.
Is CON5 4 th pin ~ 8 th
voltage 0V or 5V?
No
7
Explain to customer
- 55 -
Change the
Yes
Main PCB
th pin
Voltage[V]
CON101 Not 0V, 5V
4 th pin~6 th pin
Change the
Yes
Display PCB
pin
Voltage
[V]
Not
CON5
4 th pin ~ 6 th pin 0V, 5V
Change the
Yes
Main PCB
pin
Voltage
[V]
CON5 Not
4 th pin ~ 8 th pin 0V, 5V