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Need an instruction manual for a Casio Tonebank Keyboard CT-647

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Posted on May 18, 2011


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My casio ct 615 210 tonebank keeps switching off after so many minutes? Why, and how can I stop this from happening. Thanks

To rule out the power supply, or the related power supply circuitry - try it with batteries. If the problem goes away, you can try another 9v power supply with the same ma current (or higher) just make sure it is the correct polarity.

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There is no such model.
If you are referring to CT-615, you can purchase a PDF copy of manual from ebay

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Do you have a manual for a Casio keyboard, ct-638?

Hi jkuhnlein1...
Sorry I could not find a free user manual for your Casio keyboard ct-638, but I did find one on Ebay for $6.99 USD with free shipping.
Go to the following webpage to see the manual.
Please take time to rate me

Aug 23, 2011 | Audio Players & Recorders

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I need a free online copy of a Casio CA-100 Tonebank manual, where can I find one?

Good Day Sue!

Go to
to get the online manual for Casio CA-100 Tonebank.

Enjoy it!

You can comeback later and give this answer a four thumbs up rating.

May 31, 2011 | Computers & Internet

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I need a user manual english or french for a keyboard hohner psk 75

I think you will find that this keyboard is the same as the Casio CT 680, which can be found here:

Jul 08, 2010 | Computers & Internet

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This keyboard was given to me without a manual. It is a CT-647 T-140360. Where can I get a manual And instruction sheet?

Try this site:

They don't have the 647 but try the 671 and compar to yours... Often the series will be very close and the manual for one can almost be used for the other.

Dec 15, 2009 | Casio Music

1 Answer

My casio ct670 ToneBank keyboard isn't making much sound

Check that you don't have old batteries in the unit. Also that the auto power down is not activated.

If using a power adapter make sure it is the RIGHT one, both in polarity and current rating.

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