[. . . ] Small-screen TV sets are supplied with an indoor antenna, which under certain reception conditions may not be acceptable. [. . . ] To turn on or off the display of the programme number and remaining time on the timer . Use the number keys to select the page you want (always three figures). The number appears in the top left-hand corner, the counter searches then the page is displayed. Press this button several times to view the upper part, the lower part and then return to normal size. The TV set has 3 or 4 keys (on some models these are located behind a flap). Versions with 3 keys: A Men u key and - and + keys to select programs and adjust menus. Versions with 4 keys: two PROGRAM - and + keys and two VOLUME - and + keys. Headphones: (only on some versions) The headphone socket is on the front of the TV set (depending on version, it may be concealed by a cover). [. . . ] In the event of a breakdown, under no circumstances attempt to repair the TV set yourself, contact your dealer. [. . . ]