S16A Adjusting the Screen Voltage 1. Select "Power Off ›Info › Menu › Mute › Power On" to enter Service Mode. 2. Initialize all settings to the values appropriate to the corresponding model. (Service manual) 3. Display the color bar pattern. 4. First check IBRM in "G2 Adjust" of Factory and adjust Screen potmeter until the color of IBRM item turns green.