Haier HL32K2, Service Manual, Page: 15 / 61

4-2-1 Function Description:
Main Board
Process signal which incept from exterior equipment then translate into signal that panel can display.
4-2-2 Connector definition
Main board connector
Power connectors (CNA1, CN1)
CNA1 CN1
Pin number Signal name Pin number Signal name
1 SW 1 DIMMING
2 GND 2 ON/OFF
3 +5VSB 3 GND
4 GND 4 SELECT
5 GND
6 +12V
7 +12V
Notes:
CN1-Pin 2: Backlight on/off:
The system can turn on or turn off the backlight of TFT LCD Panel through the power supply
unit path.
CNA1-Pin 1: System power on / standby
System board will use this pin to control system power.
CN1-Pin 1: Control the luminance of backlight
The system can generate the PWN signal to control the strength of TFT LCD Panel’s
backlight through this connector
CNE1 CNE2
Pin number Signal name
Pin number
Signal name
1
SB5V 1
GND
2
IR 2
AD1
3
LED_R 3
AD2
4
LED_G
5
GND
Keypad and remote connector (CNE1,CNE2)
Service Manual
Model No.: HLC32K2
14