* Service Menu :
* Using the remote control
* Press {ENTER} {ENTER} {UP ARROW} {DOWN ARROW} {ENTER}.
* Then {UP ARROW} when it asks: "Do you want to enter the Service Mode?".
* Factory Mode :
* Using the remote control
* Press {ENTER} {ENTER} {LEFT ARROW} {ENTER}.
* Then {UP ARROW} when it asks: "Do you want to enter the Factory Mode?".
* Any additional menus usually pop up under the main INFORMATION menu
If you can not found, please search here
Ex : Lcd TV schematic