18.
19.SLOW: Slow key (Only in DVD state).
20.SLEEP: Sleep Timing Power off key. Press this key to set the system
21.OPEN: Eject key.
22.CARD/USB/MEMORY: In the radio state, press this key to enter Channel Saving State, then press "SKIP+/TUNE+" and
23.MUTE: Mute key. Each time you press it, it will switch between Mute and Unmute.
24.MONO: FM Stereo Switch key. In FM state, press this key to set the sound as stereo or mono.
25.EQ: Sound Effect key. You can set the sound effect as ROCK
JAZZ
POP
CLASSIC
NORMAL in turns.
26.
: Back key. In ATV state, you can switch between the current program and the previous program; in DTV and DVD menu state, press this key to exit menu.
27.
/CH-/
: Channel Switch Up and Down key. In FM/DTV/ ATV state, press this key to switch program channels; when entering system menu, this key will become Up and Down key .
28.AUDIO: Audio Switch key. In DTV state, press this key to display the audio information of the current program, then press direction key to switch audio channel; in DVD state, press this key to switch audio channel.
29.OK: OK key.
30.SETUP: Set up key. In DVD state, it is the Menu on/ off key.
31.AL.SET/ALARM SET1/ALARM SET2: Alarm State Setting key. You can set the state of alarm 1, alarm 2 as BUZZER/RADIO/TV.
32.
/ 
/Yellow/Blue: In DVD state, it is Fast Backward/ Fast Forward key; in DTV state, you should operate by system prompt.
33.DTV MODE/ZOOM: In DTV state, it is the switch key of radio and TV program. Press this key to switch between TV program and radio program; in DVD state, it is the Zoom In key.