Yamaha Electone EL-87 Owner's Manual page 90

(8) Checking the Remaining Memory
While plaback is stopped, you can check the amount of
memory available for additional recording. To do this,
simultaneously hold down the SHIFT button and the PAUSE
button (indicated in the illustration at right as REM. MEM.:
Remaining Memory). The maximum amount of memory is
620 for 2DD disks and 1240 for 2HD disks.
(9) Registration Menus and Voice Disks
The M.D.R. also allows you to select registrations and voices
from disks. For more information about Registration Menus,
see page 8; for more on Voice Disks, see page 95.
(10) Copy Protect
Some of the Disks available for the Electone are purposely
protected from being copied or erased. You cannot save the
data to another floppy disk. If you try to load data from such
a "copy-protected" disk to the Electone, a "Protected Disk"
(Pr##) message will appear on the LED display. The data
cannot be saved to the disk.
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