Yamaha PSR-S950 Owner's Manual page 37

Song, Style or Registration Memory containing Expansion Voices or Styles
Song, Style or Registration Memory containing any Expansion Voices or Styles will not sound properly or cannot
be called up, if the Expansion Pack data does not exist in the instrument.
We recommend that you write down the name of the Expansion Pack when you create the data (Song, Style or
Registration Memory) using Expansion Voices or Styles, so that you can easily find and install the Expansion
Pack when necessary.
Uninstalling an Expansion Pack
This operation deletes all the installed Expansion Voices or Styles.
1
Call up the operation display then select an Expansion Pack
file.
[FUNCTION]  [J] EXPANSION PACK INSTALLATION  TAB [E][F]
USER
2
Press the [5 ] (UNINSTALL) button to uninstall the Expansion
Pack.
Follow the on-display instructions.
3
Press the [F] (YES) button when the message indicating
completion of the uninstall operation appears.
The instrument will be restarted automatically.
2
PSR-S950/S750 Owner's Manual
NOTICE
The instrument will be restarted
when the uninstallation opera-
tion is completed. Save all data
currently being edited before-
hand, otherwise the data will be
lost.
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