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3-2-1 Function Description:
Main Board
Process signal which i ncept from exterior equipment t hen translate into signal that panel
can display.
3-2-2 Connector defnition
Main board connector
Power connectors (J15
ˈ
J16)
J16
J15
Pin number
Signal name
Pin number
Signal name
1
+5V
1
GND
GND
3
DIM
3
+5V
4
high voltage
4
+5V
5
GND
5
POWER ON/OFF
6
+5VSTB
7
+5V
8
+5V
9
GND
10
GND
11
GND
12
+12V
13
+12V
Notes:
J16-Pin 2: Backlight on/off:
The system c an t urn o n or turn o ff t he backlight of T FT L CD P anel t hrough t he power
supply unit path.
CN115-Pin 5: System power on / standby
System board will use this pin to control system power.
J16-Pin 3: Control the luminance of backlight
The system can generate the P WM s ignal to control the strength of T FT LCD Panel’s
backlight through this connector
2
2
BL
J15
Summary of Contents for L42B1180
Page 13: ...3 4 LCD Panel 12 T420H W06 V2 AU ...
Page 18: ... 17 ...
Page 19: ... 18 ...
Page 20: ... 19 ...
Page 25: ...6 3 Setting Up Your Remote Control 24 ...
Page 26: ...7 Electrical parts 7 1 Block diagram 25 AMP Headphone Coaxial 1 2 MSD318QT Main IC ...
Page 37: ...8 TV OPERATION 36 ...
Page 38: ... 37 ...
Page 39: ... 38 Press ENTER Key To Select ...
Page 40: ... 39 Press ENTER Key To Select ...
Page 41: ... 40 ...
Page 44: ... 43 9 Trouble shooting 9 1 Simple check ...
Page 46: ... 45 3 Panel display abnormally connector J9 is at normal level ...
Page 50: ... 49 7 PC no picture or picture abnormal ...
Page 51: ... 50 8 YPBPR AV no picture or picture abnormal Check Y ...