Korg CONCERT C-550 Owner's Manual page 23

Remaining recording memory display
This displays the percentage of internal memory that
remains available for recording.
●Hold down the [MIDI] switch, and press the
[RECORD] switch.
The indicator at the [MIDI] switch will light, and the
indicator at the [RECORD] switch will blink. The LED
display will show the remaining amount of recorder
memory in the range of 0 ~ 99 (%).
If not enough free memory is remaining, record-
ing will not be possible. When you begin to run
out of memory, save the data on an external
Record and playback your performance
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