Question about Casio LK30 Note Lighted Keyboard
Some keys of my electric keyboard has no sound posible reasons please
One portion of the key scanning matrix has gone bad. First thing is to clean the contacts with 99% isoprophyl alcohol. These USUALLY consist of traces on a circuit board that conductive rubber "pills" under silicone rubber domes are pressed down. Each note usually has two contacts, one closes before the other. This creates "velocity" measurement for the key. IF ONE of the contacts for a key doesn't work, the velocity can detect that the note has actuated, but no release occurs.
This would be on the "STROBE" line for either the first or second contact for THE OCTAVE you have problem with. There are disconnect diodes that prevent sneak paths.
You could have one bad diode, a crack in the circuit board, or a bad connection to the keyswitch board.
Posted on Nov 27, 2009
Tips for a great answer:
Jan 25, 2012 | Casio Ctk691 Keyboard
Mar 08, 2011 | Casio Privia Keyboard Case
Feb 20, 2011 | Casio Ctk 496 Electronic Keyboard with 61...
Dec 27, 2010 | Casio Ctk 496 Electronic Keyboard with 61...
May 10, 2010 | Casio Ctk 496 Electronic Keyboard with 61...
Jan 21, 2010 | Casio Privia Keyboard Case
Apr 19, 2009 | Casio CTK810 61 Key Keyboard
Apr 04, 2009 | Casio Ctk 496 Electronic Keyboard with 61...
Nov 20, 2013 | Casio LK30 Note Lighted Keyboard
Feb 10, 2011 | Casio LK30 Note Lighted Keyboard
288 people viewed this question
Usually answered in minutes!
Step 2: Please assign your manual to a product: