20 Most Recent Casio AP-620 AP620 Digital Cabinet Piano Black Questions & Answers


The main circuit board has failed. Will Cost about 300-400 dollars to replace if not still under warranty.

Casio AP-620... | Answered on Feb 21, 2019


What has happened is that one signal wire of the matrix that scans the keyboard has opened up. Each key has two contacts. One closes before the other and that is how they measure key velocity to control the loudness for piano sounds for example. When one contact doesn't work, often the sound is set to MAXIMUM key velocity resulting in MAX loudness. The key contacts are scanned digitally in groups of usually 8 or 12 and, for instance, every C key has a single line attached and then every group of 8 or 12 has a second line and then there are two complete sets of these to implement the velocity sensing. Your unit probably has either a break in a cable or possibly a cable connector that has failed or not seated OR worst case, the circuit board under the keys has a crack breaking one wire or circuit trace going to that section of the keys. The problem will require opening the keyboard to repair. If you are not electronically adept, besst to take this to a repair shop.

Casio AP-620... | Answered on Nov 10, 2012


You can find the software for Casio LK-70S here: https://support.casio.com/en/support/download.php?cid=008&pid=20 .Look for the driver for the keyboard under the Digital Keyboard/Piano (excluding the PL-40R). Select the appropriate link and then scroll down to the Download button. Another file is the SMF converter. The conversion software is here: http://music.casio.com/e/smf/ . Scroll down to find the download links. This software works with Microsoft Windows 98 SE, Windows XP (32-bit) and Vista (32-bit).

I hope this helps.

Cindy Wells

Casio Music | Answered on Mar 09, 2019


Try a different pedal. If that does not work try replacing the input jack.

Casio Music | Answered on Feb 11, 2019


Casio CDP has Auto Power Off: 30 minutes after last key operation, Auto Power Off can be disabled.
Please read the manual.

If it turns itself off while playing, I would try to buy a new AC Adapter to test. DC cable of AC adapters are often broken internally after much "bending".

Casio Music | Answered on Jan 14, 2019


You need first of all to remove the cover, access the keybed, remove from keyboard base and then you will be able to remove a key - it is impossible without following this procedure.

Casio Music | Answered on Jan 10, 2019


This doesn't answer your question directly but may help if you decide to get another pedal.
I had a Casio keyboard for a while, and found that the polarity of the sustain pedal was the reverse of that on most other makes. This meant that when I bought another pedal (not Casio), it sustained when not depressed, and did not when depressed. To correct this all I did was to cut the cable near the pedal, reverse the wires, solder them back and cover with nice electrical tape.

By the way if you use SEABOARD or MAINSTAGE then there's a different trick (avoiding cutting wires) on this link:
https://www.google.fr/search?safe=active&source=hp&ei=_94nXKycB5KNrwSa87ewDQ&q=reverse+polarity+piano+sustain&btnK=Google+Search&oq=reverse+polarity+piano+sustain&gs_l=psy-ab.3..33i21j33i160.2290.9757..10489...0.0..0.1422.4626.19j11j7-1......0....1..gws-wiz.....0..0j0i22i30j33i22i29i30.Kw9oNuP5f5o

If this wasn't completely useless then please give this a good mark! Thanks.

Casio Music | Answered on Dec 29, 2018


Google (casio)(ctk-150)(manual) without parens.

Casio Music | Answered on Nov 25, 2018


Sounds like you are overloading the capabilities. Basically, you have too many notes sounding at once. It doesn't have a massive amount of polyphony.

Casio Music | Answered on Nov 09, 2018

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