The Arius (YDP) series digital pianos are Yamaha’s static ‘furniture-style’ range. They’re digital pianos that combine great quality piano sounds with a decent touch. Essentially, the Yamaha Arius YDP142 is one of a series of mid-range static digital pianos that are considered as furniture style range, lending a classic piano look to your home’s interior. The YDP142 has the biggest upgrade over the other models in that the previous YDP141 had only 64-note polyphony piano memory chip and the new YDP142 has 128-note polyphony along with 10 nice, but basic instrument sounds including harpsichord, strings, organ, etc, instead of the six sounds on the previous model.
According to several user reviews, they have praised the Yamaha YDP142 as a great digital piano for both those who are still learning and those who are already knowledgeable but would like to further improve as their skill level rises; The keys are certainly getting a lot of praise for responding so well to every finger stroke and strike. Also, some users have complained it for the keys being made of plastic, It would have been better if Yamaha used a different material – say, simulated ivory – in order to fully achieve the degree of realism found in real grand pianos.
Image source: bestdigitalpiano.net
To restoring Yamaha Arius YDP142 to it’s factory settings, just simply power ON while simultaneously holding the C7 (the highest) key on the keyboard until the [REC] and [PLAY] lamps are flashing.
Warning! When you execute this procedure, all data (with the exception of the Songs) will be reset to the factory default settings. Do not use this function unless you are certain that you want to do this. This procedure also applies to the Yamaha Arius YDP162 unit. Hopefully the article of “Reset a Yamaha Arius YDP142 Digital Piano” can help you.
Reference: Yamaha YDP142 manual