User Manual BDL5571V172.4. REMOTE CONTROL2.4.1. GENERAL FUNCTIONSPOWER buttonPress to switch on the monitor from standby mode. Press again to turn itoff to standby mode.SMART buttonTo select smart picture mode from: Standard: for images (factory setting) Highbright: for moving image such as Video sRGB: for text based imagesVIDEO SOURCE buttonTo activate the video source selection menu. Press it repeatedly to selectthe video input source from DP, DVI-D, VGA, HDMI and Component.AUDIO SOURCE buttonTo activate the audio source selection menu. Press it repeatedly to selectthe audio input source from HDMI, AUDIO1, AUDIO2, and AUDIO3.Picture format buttonTo switch screen aspect ratio betweenPC signal: Full, Normal, Custom and Real.Video signal: Full, Normal, Dynamic, Custom and Real.PIP (Picture In Picture) buttonsON/OFF button: To turn PIP mode ON/OFF.INPUT button: To select the input signal for the sub-picture.CHANGE button: To exchange between the main picture andsub picture.CONTRAST buttonPress to open the Contrast OSD selection, and then press the PLUS orMINUS button to adjust the value.BRIGHTNESS buttonPress to open the Brightness OSD selection, and then press the PLUS orMINUS button to adjust the value.