Yamaha PortaTone PSR-2000 Quick Steps - Page 8

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Yamaha PortaTone PSR-2000 Quick Steps
III. Data will not Save Properly
The Internal RAM Memory in the PSR1000/2000 is "volatile." Any user-stored
data in this memory location such as Songs, Styles, System Setup data, Music
Database information, etc. must be backed up to floppy disk, if the unit will be
unplugged from an AC outlet for more than a week. If the unit is left unplugged
for over a week, the data may be lost.
Another way that data may be lost, is if the storing procedure for System Setup
data is performed incorrectly; on the PSR1000/2000, if a user changes the
settings in a screen, they must remember to press the [EXIT] button afterward,
before turning OFF the power, or the data is lost.
Owner's Manual, p. 4, 39