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Service Manual
Model No.: HLC24XSLW2a
4-2-1 Function Description:
Main Board
Main board connector
Power connectors (CN1)
Notes:
CN1-Pin 3: Backlight on/off:
The system can turn on or turn off the backlight of TFT LCD Panel through the power supply
unit path.
System board will use this pin to control system power.
CN1-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,CN3)
CN2
Pin number Signal name
SB5V
1
IR
2
LED_R
3
LED_G
4
GND
5
Speaker Connector (CN4)
Pin number
1
L+
2
L-
3
R-
4
R+
DVD Audio Connector (CN8)
Pin
number
Signal name
1
DVD_L_IN
2
DVD_R_IN
3
14
Pin number
Signal name
GND
CN1
Pin number
Signal name
1
+12V
2
+12V
3
BL
4
DIM
5
GND
6
GND
7
SW
CN3
Signal name
GND
1
AD1
2
AD2
3
Description
Left track
Right track
Ground
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