LG 47LX9500 Service Manual page 112

Front Board Connectors J1 Voltage and Diode Check
Front Board Connectors J1 Voltage and Diode Check
Diode Mode values taken with all Connectors Removed
J1 "Front IR" to P8200 " MAIN"
Pin Label
1
1 SCL
1
2 SDA
3 Gnd
4 KEY 1
5 KEY 2
6 3.5V_ST
7 Gnd
8 LED_LOGO
2
9 IR
10 Gnd
11 +3.3V_Normal
12 LED_R/BUZZ
(1) Pulses only present when Intelligent Sensor is
turned on. (3.7V p/p)
(2)
IR pulses (2.5V p/p)
Diode
STBY Run
Check
3.45V 3.37V Open
3.45V 3.37V Open
Gnd Gnd Gnd
3.45V 3.37V Open
2.76V 2.7V Open
3.46V 3.37V Open
Gnd Gnd Gnd
0V 0.82V Open
1.57V 1.52V Open
Gnd Gnd Gnd
0V 3.33V Open
0V 0V Open
September LCD TV 47LX9500
112