Yamaha Portatone PSR-640 Owner's Manual page 161

Data not found!
User style full!
Cannot quantize the
preset data.
Cannot operate
during recording.
Cannot set the MIDI
function during disk
operations, etc.
Cannot turn harmony
ON during Style/Pad
recording.
Cannot turn DSP ON
during Style/Pad
recording.
Cannot enter the
functions during Pad
recording.
Backup error!
Now initializing
the internal memory...
Host is offline!
This message appears when you attempt to edit, quantize or clear the
track which contains no data in the Record mode.
This message indicates that recording a new User style cannot be started
when all three User styles have recorded data. Make sure to clear at least
one of the three User styles before recording a new User style.
This message appears when you attempt to edit or quantize the track
(other than RHYTHM) which contains preset data in the Style Record
mode.
This function cannot be used during Song/Style/Pad recording.
The MIDI function cannot be set during recording, playback, and disk
operations.
Harmony cannot be turned on during Style/Pad recording.
DSP cannot be turned on during Style/Pad recording.
This message appears to indicate you cannot enter the function when you
select Multi Pad function in the Multi Pad Recording mode.
The backup data (page 159) is faulty.
Use the data initialization function (page 159).
All data can be initialized and restore to the factory preset condition by
turning the STANDBY switch ON while holding the highest (rightmost)
white key on the keyboard.
This message may appear when the Host Select switch is set appropriately
and the serial cable is connected to the TO HOST but not to the PC's serial
port (or the cable is properly connected to the PC which is currently turned
off).
Alert Message List
161