LG 42LV5500 - P1 Front IR;Soft Touch Key Board Voltage and Diode Check

P1 Front IR/Soft Touch Key Board Voltage and Diode Check
P1 "IR Board" To P901 "Main Board"
Pi
Lbl
STBY
R
Di d Ch k
P1
Pi
n
L
a
b
e
l
STBY
R
un
Di
o
d
e
Ch
ec
k
1SCL2.9V 3.49V OL
2SDA2.92V 3.49V OL
3GndGnd Gnd Gnd
4KEY 13.26V 3.28V 2.3V
5KEY 23.26V 3.28V 2.3V
6 3.5V_ST 3.55V 3.49V 1.68V
7
Gnd
Gnd
Gnd
Gnd
1
7
Gnd
Gnd
Gnd
Gnd
8 LED_B/BUZZ 0V 0V OL
9IR1.48V 1.45V 2.61V
10 Gnd Gnd Gnd Gnd
11 +3.3V_Normal 0.35V 3.34V OL
12 LED_R/BUZZ 0V 0V OL
13 Gnd Gnd Gnd Gnd
14
S/T SCL
3.55V
3.49V
2.39V
(1)
Clock & Data pulses only present when Intelligent Sensor is turned on. (3.6V p/p)
(2)
IR pulses (2V p/p)
(3)
14
S/T
_
SCL
3.55V
3.49V
2.39V
15 S/T_SDA 3.55V 3.49V 2.39V
May 2011 LCD TV 42LV5500
80
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)