Casio then entered the realm of digital pianos and keyboards. This included theirCelviano AP-7furniture-style digital piano in 1991, and theCTK-520Lkeyboard in 1996, which was the first keyboard to incorporate light-up keys. The modern era of Casio instruments truly began in the2000s. ThePri...
How do you turn off the key lights on a Casio CTK-520L? it has no key light button. The manual is not available online and a Google search come up dry.