LG 42LV5500 - P901 Main Board to (Ft. IR;Intelligent Sensor) Voltage and Diode Check

P901 Main Board to (Ft. IR/Intelligent Sensor) Voltage and Diode Check
P901
P901 Connector "MAIN Board" To "IR Board"
Pin Label STBY Run Diode Check
P901
1
(1)
SCL 2.9V 3.49V 3.28V
2
(1)
SDA 2.92V 3.49V 3.28V
3Gnd Gnd Gnd Gnd
4KEY 13.26V 3.28V 1.88V
5KEY 23.26V 3.28V 1.88V
6 3.5V_ST 3.55V 3.49V 1.15V
7
Gnd
Gnd
Gnd
Gnd
7
Gnd
Gnd
Gnd
Gnd
8LED_B/BUZZ 0V 0V OL
9
(2)
IR 1.48V 1.45V OL
10 Gnd Gnd Gnd Gnd
1
11 +3.3V_Normal 0.35V 3.34V 0.53V
12 LED_R/BUZZ 0V 0V 2.67V
13 Gnd Gnd Gnd Gnd
14
(3)
S/T SCL
355V
3 49V
1 86V
(1)
Clock & Data pulses only present when Intelligent Sensor is turned on. (3.6V p/p)
(2)
IR pulses (2V p/p)
14
(3)
S/T
_
SCL
3
.
55V
3
.
49V
1
.
86V
15
(3)
S/T_SDA 3.55V 3.49V 1.86V
May 2011 LCD TV 42LV5500
69
Diode Mode values taken with all Connectors Removed
(3)
Clock & Data pulses only present when Set is turned on or Off. (3.9V p/p)