Casio CTK-691 Musical Instrument User Manual


 
Power Supply
E-16
When you are using battery power, keyboard power turns off
automatically whenever you leave it on without performing
any operation for about 6 minutes. When this happens, press
the POWER button to turn power back on.
Auto Power Off is disabled (it does not function) when you
are using the AC adaptor to power the keyboard.
Hold down the TONE button while turning on the keyboard
to disable Auto Power Off.
When Auto Power Off is disabled, the keyboard does not
turn off automatically no matter how long it is left with no
operation being performed.
Auto Power Off is automatically enabled whenever you
turn on keyboard power.
Tone, rhythm, and other “main keyboard settings” in effect
when you turn off the keyboard manually by pressing
POWER button or when Auto Power Off turns off power are
still in effect the next time you turn power back on.
Be sure to press the POWER button to turn off power and
make sure that the LCD backlight is off before
disconnecting the AC adaptor or doing anything else.
Never disconnect the AC adaptor while the keyboard is turned
on or try to turn off power using any other technique besides
pressing the POWER button. Doing so can cause the contents of
the keyboard's Flash memory to become corrupted. Strange
keyboard operation and abnormal startup when power is
turned on are symptoms of corrupted Flash memory contents.
See “
Troubleshooting
” on page E-
83
for more information
.
Never press the POWER button while the following
message is on the keyboard’s display.
(message) “Pls Wait” or “Bulk In”
Turning off the keyboard while the above message is on the
display can cause user data (user tones, song memory data,
etc.) currently stored in keyboard memory to become corrupted.
Once corrupted, you may not be able to recall the data again
.
In addition to the above settings, data stored in the
Registration Mode and Song Memory Mode is also retained
when keyboard power is turned off.
J About Flash memory
Your keyboard comes with built-in Flash memory, which can continue
to hold data even when electrical power is totally cut off. This means
that even after batteries go completely dead, you can attach the AC
adaptor, turn on power, and still recall data stored in memory
.
When running under battery power, be sure to replace batteries
as soon as possible after the first signs of low battery power (dim
power indicator lamp, dim display characters, etc.) Though the
keyboard’s Flash memory is non-volatile (which means that data
is not lost when power is interrupted), data can be lost if power
suddenly fails while data is being written to flash memory
*.
*
While storing or deleting user data, while recording with the
synthesizer, while transferring data from a computer, etc
.
Use the procedure on page E-75 to initialize the keyboard,
which clears all memory data and returns settings to their
initial factory defaults.
Auto Power Off
To disable Auto Power Off
Settings
Main Keyboard Settings
Tone number, layer, split, split point, drawbar organ
tone settings, transpose, tuning, contrast settings, touch
response, reverb, chorus, DSP, equalizer, rhythm
number, tempo, keyboard channel, MIDI In Chord
Judge on/off, accomp MIDI out on/off, assignable jack
setting, accompaniment volume, user area tones
(Synthesizer Mode), user area accompaniments, user
DSP area, Auto Harmonize on/off, Auto Harmonize
type, Mixer hold, DSP hold, Auto Accompaniment
mode, all Mixer parameters, all Synthesizer Mode
parameters, Song Memory song numbers, SMF player
settings (play mode, manual play part, SMF playback
volume)
Turning Off the Keyboard
Memory Contents
Saving Setups and Memory Contents
Initializing the Keyboard
705A-E-018A