Manual for PSR 270 KEYBOARD - Music

Try re loading the software.
It's all in the user manual.

Question edited for clarity.

Try a Factory Reset. Try a power reset first. Disconnect from the mains plug for 15 minutes.

System Reset - Yamaha PSR-S750 Service Manual

ManualsLib https://www.manualslib.com > ... > Service manual
There are two reset methods in the SYSTEM RESET display: Factory Reset and Custom Reset. ... This function lets you restore the status of the instrument to the ...

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  Yamaha PSR-S750 Reference Manual - System Reset

  https://www.manualslib.com > ... > Reference manual
  This function lets you restore the status of the instrument to the original factory settings. ... buttons to enter or remove the checkmark. ... operation for all ...
  
  

It is shop replaceable. I have heard this is NOT an uncommon problem. You can get the parts through Yamaha America in California. Here is your service manual:

http://elektrotanya.com/yamaha_psr-s500.pdf/download.html

Scroll down to "Get Manual" and click on it to download the manual (about 12Mb)

Yamaha support/parts contact
http://usa.yamaha.com/support/

http://music.manualsonline.com/manuals/mfg/yamaha/psr620.html there you go please give me some thumbs up!

Register and download the manual for free at retrevo.com

http://www.retrevo.com/support/Yamaha-YPT-220-Music-Keyboards-manual/id/23656ci473/t/2/


#27 on page 11, rear panel.

My keyboard yamaha psr2000,so I want parts silicone rubber keypad 61 and including electronic board,thank you.

Here is a link to Yamaha for your PSR-3 owners manual.
http://www2.yamaha.co.jp/manual/pdf/emi/english/port/PSR3E.pdf

Yamaha.com has a manual for a PSR-E203. This might be close enough to your keyboard to help

Try going to http://www.yamaha.co.jp/manual/english/index.php. There, you can try to find your owners manual for free.

There is no need for a manual. It is so easy to operate because it is designed for easy opeating. If you need a manual to operate the PSR-510 then you really won't be able to operate it even after studying the manual. But here it is just in case you can by some miracle!
http://www2.yamaha.co.jp/manual/pdf/emi/english/port/PSR510E.pdf