LCD TV Service Manual
1.Diagram:
Panel CON1to
Power CON5
to Power
Input
Power Board
AC Power Input
M/B CON1 to Power CON5 ,
PowerCON4 to M/B CON2
M/B CON5
to I/B CON2
M/B CON5
to K/B CON1
KeyBoard
Panel Display
Main Board
IR Board
M/B CON6、24、
15 to DVD/B
CN6、7
LVDS Cable
M/B CON7 to panel
M/B con6
to 1556/B
DVD
Board
DVD Power Control
Board 1556
1.1 Function of Board:
1) Main Board:Control all inputing signals, Video signal decode, De-interlace, digital
Signals (LVDS signal), scaling;
2) Panel:Display all image;
3) IR Board :Recive IR Signal;
4) Power Board: Supply all the power for the TV and DVD set;
5) Key Board :POWER、SOURCE、MENU、VOL+/- ,Channel +/-, Play/Pause, Open/Close;
6) Power Switch:
Turn on/off the TV set;
2. Main Board and Power Board
2.1 Main Board and connector definition
2.1.1 Image photo
1
Function Inverter
Connector CON8
No Signal Spec
1 ON/OFF Inverter switch
2 ADJ Adjust backlight
3 GND
4 GND
2
Function Amplifier Power
Connector CON1
No Signal Spec
1 24V 24V IN
2 24V 24V IN
3 GND
4 GND