Acer AT4220A AT4220A Service Guide - Page 31

general settings, and Empowering Technology. For advanced settings, please refer to following page. Adjusting the Picture Quality 1. Press the MENU key to bring up the OSD. 2. Using the directional keys, select Picture from the OSD. Then navigate to the picture element you wish to adjust. 3. Use the left or right keys to adjust the sliding scales. 4. The Picture menu can be used to adjust the current Scenario mode, brightness, contrast, color, sharpness and other image-related qualities. Adjusting the Audio Settings Adjust the Channel Management 1. Press the MENU key to bring up the OSD. 2. Using the directional keys, select Audio from the onscreen display. Then navigate to the feature you wish to adjust. 3. Use the left or right keys to adjust the sliding scale. Press OK to save. 4. The Audio menu can also be used to adjust the treble, balance, sound effects and other important soundrelated settings. 1. Press the MENU key to bring up the OSD. 2. Using the directional keys, select Channel management from the OSD. 3. Use the directional keys to navigate the menus. 4. The Channel management menu can be used to set channel skipped, select TV system and scan channels automatically. Adjusting other Options 1. Press the MENU key to bring up the OSD. 2. Using the directional keys, select Options from the OSD. 3. Use the directional keys to navigate the menus. 4. The Options menu can be used to select the picture aspect-ratio mode, set the sleep timer and other important options. Chapter 1 25