Sharp MD-MT877H Operation Manual page 131

Intro play
You can listen to each track for approximately 5 sec-
onds.
When stopped or paused, press the
2 seconds or more.
When the playback mode is set as random playback,
random repeat playback, or one-track repeat playback,
the intro scan is not possible.
In this case, the playback is started in the normal mode.
The duration that "INTRO PLAY" is displayed is not fixed.
To return to normal playback
Press the 06 06 button
06 06
06
button for
06
E-20