Samsung LA40F71BX Service Manual page 60

CN900 - Front control
PIN 1 2
NAME SDA-T SCL-T GND
Function Define
- A5V Front control board poewr supply
- KEY INPUT1,2 Key control, from the memu, change up/down Etc.
- IR Remote control signal
- LED Control the timing and stand by LED color
CN505 - Panel control
PIN 1
NAME SW_inverter
Function Define
- SW_inverter panel inverter control, about 3.3V
- Ana_dimming panel dimming control
- PWM_dimming panel PWM control, duty 40% ~ 90%
3 4 5 6
KEY LED GND
INPUT1
2 3
Ana_dimming PWM_dimming
7 8 9 10
A5V GND IR KEY
INPUT1 INPUT2
4 5
GND Sense_Power
11 12 13 14
KEY GND IDENT HP-L
HP
8 Wiring Diagrams
15
HP-R
8-5