LG INFINIA 47LE8500, Manual

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July 2010 LCD TV 47LE8500
87
Front Board Connectors CON1, CON2 and CON3 Voltage and Diode Ch Front Board Connectors CON1, CON2 and CON3 Voltage and Diode Ch eck eck
Diode Mode values taken with all Connectors Removed
CON1 "Front IR" to P8200 " MAIN"
Open 0V 0V LED_R/BUZZ 12
Open 3.3V 0V +3.3V_Normal 11
Gnd Gnd Gnd Gnd 10
Open 1.54V 1.57V
(2)
IR 9
Open 0V 0V LED_LOGO 8
Gnd Gnd Gnd Gnd 7
Open 3.45V 3.45V 3.5V_ST 6
Open 3.29V 3.29V KEY 2 5
Open 3.29V 3.29V KEY 1 4
Gnd Gnd Gnd Gnd 3
Open 3.45V 3.45V
(1)
SDA 2
Open 3.45V 3.45V
(1)
SCL 1
Diode
Check
Run STBY Label Pin
Open 3.36V 3.45V 8
Open 3.36V 3.45V 7
Gnd Gnd Gnd 6
Open 3.28V 3.28V 5
Open 3.3V 3.3V 4
Gnd Gnd Gnd 3
Open 1.63V 0V 2
Open 3.36V 3.45V 1
Diode Check Run STBY Pin
Gnd Gnd Gnd 4
0 0.6V 1.36V 3
Gnd Gnd Gnd 2
1.5 3V 3.45V 1
Diode Check Run STBY Pin
CON
2
"Front IR" to “Soft Touch Key Board"
CON3 "Front IR" to “LG Logo Board"
(1) Clock pulses only present when Intelligent Sensor is
turned on. (3.7V p/p)
(2) IR pulses (1.6V p/p)
Leandro
Palmeira