Push down "MENU" button( 5 seconds, then release after monitor is On), then Push "POWER" button once to turn on monitor.

Push "MENU" once to bring up OSD (On Screen Display), and push "+" or "-" to "Factory"

Push "MENU" button once and wait for two seconds, then Factory OSD will be pop up on left top side

Push "+" or "-" and go to "Lvds Map" then push "MENU" once to change the setting. Then go to "Exit"
That's it!