Acer AT3720A AT3720A Service Guide - Page 18

8 ENTER Press to confirm channel number selection. 9 MENU Press to open or close the Menu. 10 TTX/MIX (TELETEXT/MIX) Press to return to the previous channel. 11 Directional keys/OK N/A 12 WIDE Press to toggle scaling mode between 4:3; 16:9, Panorama and Letterbox 1, 2, 3 modes. 13 MPX Press to select the sound input, displayed in the top right-hand corner (mono, stereo, bilingual). 14 e (Empowering Technology) Press to activate Acer Empowering Technology. 15 VOL (+/-) Press to increase or decrease the volume. 16 CH (up/down) Press to sequentially select the TV channel. 17 PIP/PBP/POP Switch between PIP/PBP/POP modes. 18 SWAP For PIP/PBP mode: Toggle between the primary and subscreens. 18 ACTIVE Toggle between primary and subscreens. 20 POSITION When in PIP mode: Change subscreen position. 21 SIZE/MODE When in PIP mode: Change subscreen size. When in POP mode: Switch POP mode from 1+5 to 1+12. Teletext 1 2 7    34 56 No. 1 2 3 4 5 6 7 Item Colour buttons (R/G/Y/B) INDEX SIZE SUBTITLE SUBPAGE HOLD REVEAL Description Operates corresponding button on the teletext page. Press to go to the index page. Press once to zoom teletext page to 2X. Press again to resume. Press to view subtitles on the screen. Press to access the teletext's subpages directly. Press to pause the current teletext page in multi-page viewing mode. Press to reveal hidden teletext information. 12 Chapter 1