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Service Manual
Model No.: HL40XP1
4-2-1 Function Description:
Main Board
Main board connector
Power connectors (CN3, CN5)
CNA2
Pin number
Signal name
1
SW
2
GND
3
+5VSB
4
GND
5
GND
6
+12V
7
+12V
Notes:
CNE5-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.
CNA2-Pin 1: System power on / standby
System board will use this pin to control system power.
CNE5-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
Keypad and remote connector (CNE1,CNE2)
CNE2
Pin number Signal name
SB5V
1
IR
2
LED_R
3
LED_G
4
GND
5
14
CNE5
Pin number
Signal name
1
DIMMING
2
ON/OFF
3
GND
4
SELECT
CNE3
Signal name
Pin number
GND
1
AD1
2
AD2
3
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