Teac GF-550 Owner's Manual page 20

The tracks can be played randomly. In the stop mode, press the
SHUFFLE button and the PLAY/PAUSE button.
When the shuffle playback of all the tracks has been finished, the
unit stops and the shuffle playback mode is not cancelled.
If you press the button during shuffle playback, next track will
be randomly selected and played. If you press the button, the
currently played track will be played from the beginning. A track
cannot be replayed during shuffle playback.
Shuffle playback does not work during programmed playback.
If one of the following buttons is pressed, playback will stop but
shuffle mode will not be cancelled:
Main unit
OPEN/CLOSE, POWER, FM/AM, PHONO/TAPE/AUX
Remote control
FM/AM, PHONO/TAPE/AUX, SHUFFLE (in the stop mode)
Shuffle playback works with finalized discs only.
20
Each time the DISPLAY button is pressed, the display changes as
follows:
Track number and elapsed time of current track
c
Remaining time of current track
c
Total elapsed time of the disc
c
Remaining time of the disc
Track number and elapsed recording time of next track (0:00)
c
Remaining recordable time of the disc
c
Tuner display (only when the Tuner function is selected)
Track number and elapsed recording time of current track
c
Remaining recordable time of the disc
c
Tuner display (only when the Tuner function is selected)