Haier HLC22RW Service Manual page 9

System board will use this pin to control system power.
CN3-Pin 4: 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.
Keypad and remote connector (CN2)
Speaker connector (CN1)
DVD VIDEO Connector: CN6
Pin number
1
2
3
4
5
6
7
DVD AUDIO Connector: P1
Pin number
1
2
3
Signal name
GPIO
PB_IN
Y_IN
GND
PR_IN
GND
IR
Signal name
LI
RI
GND
Description
GPIO
PB1 IN
Y1_IN
GND
PR1 IN
GND
DVD IR
Description
YPBPR1L_IN
YPBPR1R_IN
GND
9