Casiotone CT-701 Service Manual

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Dear Techs,
Is any one having a Service Manual, Circuit Diagrams of Casiotone CT-701 keyboard. I have one which works when switched on every time and goes to constant key tones with a long delay. A single key pressed will run around 7/8 seconds before it stops. I suspected the electrolytic caps and checked but mostly they are OK. Near the values. After keeping the unit switched off for a day it will operate again normally for some 10 minutes like. Thanks for any info in advance to find the circuits.
 
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I replaced all the electrolytic caps in the main board and power supply unit and still a key press will have a delay to sound and delay to stop after the key is released. Found this service manual but not detailed circuits on skydrive.
 

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SeaGtGruff

I meant to play that note!
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I don't see anything on the ElektroTanya site. You might want to post the one you found on ElektroTanya so they can archive it.
 

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