Palsonic TFTV-430 - Manual (Page 30)

Functional Button Instruction
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MUTE
Press the button to mute audio, press again to resume.
VOL+/- Press "VOL+" button to increase the volume;
Press "VOL-" button to decrease the volume.
Press this button one time to display "--"on the screen, the channel range will be
00-99. Use numerical buttons to enter two- digit channel number..
Double press this button to display "---"on the screen, the channel range will be
000-159. Use numerical buttons to enter three-digit channel number.
CH+/-
In TV mode, press "CH+" button to select next channel, and press "CH-" button
to select prior channel.
Press the button to return to the previous channel which you were watching
just now.
For example:
Channel 5 is the previous one you just watched, and channel 10
is the current one you are watching. If you press the button, the TV set will
skip to channel 5. Press it again to return to channel 10.
C H
V O L
Mute
Volume Adjustment
Use the numerical buttons to select the channel directly
Channel Shift
Return to previous channel