LG 42LH20 Service Manual page 67

Side Key Assembly
Side Key Assembly
P3000 Diode Check Measurements with Key pressed.
Pin 1 measured
KEY
from Gnd
Power 270.5 Ohms
Input 1.8K Ohms
Menu 4.8K Ohms
Enter 10K Ohms
P3000 Voltage Measurements with Key pressed.
Pin 1 measured
KEY
from Gnd
Power 0.179V
Input 0.906V
Menu 1.65V
Enter 2.24V
P3000 Connector "Side Key" to "IR/LED Control
PWB" P1
Pin Label STBY
1 Key1
2 Gnd
3 Key2
4 Gnd
67
KEY
Volume (-)
Volume (+)
CH (Dn)
CH (Up)
KEY
Volume (-)
Volume (+)
CH (Dn)
CH (Up)
Run
3.3V 3.3V
Gnd Gnd
3.3V 3.3V
Gnd Gnd
Pin 3 measured
from Gnd
270.5 Ohms
1.8K Ohms
4.8K Ohms
10K Ohms
Pin 3 measured
from Gnd
0.179V
0.906V
1.65V
2.24V
Diode Check
Open
Gnd
Open
Gnd
February 2009 42LH20