Press the remote 'TUNER' button, then 'SYSTEM MENU' button.
Press the cursor down to SETUP, then cursor right button.
Press the cursor down to INSTALLATION, press cursor right button, then select YES.
It takes several seconds until the menu is activated.
Press cursor down to TIME/DATE, press cursor right.
Press cursor buttons to set correct date and time. Confirm with the 'OK' button.
Press the 'SYSTEM MENU' button to exit the menu.