Yamaha PortaTone PSR-640 Manual de serviço - Página 12
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DATA INITIALIZATION
All data can be initialized and restored to the factory preset condition by turning on the power
while holding the highest (rightmost) white key on the keyboard. "Now initializing the internal
memory..." will appear briefly on the display.
PSR-740/PSR-640
CAUTION
• All registration and User
Style/Pad memory data,
plus the other settings
listed above, will be erased
and/or changed when the
data initialization
procedure is carried out.
• Carrying out the data
initialization procedure will
usually restore normal
operation if the PSR-740/
640 freezes or begins to
act erratically for any
reason.
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