Haier LE40K5000TF - Page 10

Service Manual
Model No.:
- 09 -
3-2-1 Function Description:
Main Board
Proc
ess signal which incept from exterior equipment then translate into signal that panel
can display.
3-2-2 Connector denition
Main board connector
Power connectors ( J 20 )
Pin number Signal name Pin number Signal name
1 1
GND
2 2
BL- ADUST
3 3
+5V
4 4
5 5
POWER ON/OFF
6
+5VSTB
7 +5V
8
+5V
9
GND
10
GND
11
GND
12
+12V
13
+12V
Notes:
J 20-Pin 9: Backlight on/off:
The
system can turn on or turn off the backlight of TFT LCD Panel through the power
supply unit path.
J 20-Pin 8: System power on / standby
System board will use this pin to control system power.
J 20-Pin 11: 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
BL- ON
J20