LG LFXS30796 Series - Page 72

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TEST MODE 1 Voltage [V]
CON7
8
th
pin ~ 12
th
pin
Not 0V, 5V
6
Check the Fan Motor voltage
Is Fan Motor voltage 11.4~12.6V?
Yes
Replace
Main PCB
No
TEST MODE 1 Voltage [V]
CON7
10
th
pin ~ 12
th
pin
11.4~12.6V
7
Check the Fan Motor voltage
Is Fan Feed Back voltage 1~5V?
No
Change the
motor
Yes
TEST MODE 1 Voltage [V]
CON5
4
th
pin ~ 5
th
pin
Not 0V, 5V
8
Check the Fan Motor voltage
Is Fan PWM voltage 1~5V?
No
Replace
Main PCB
Yes
9
Explain to customer