Casio AP-45 digital piano service docs?

[glebert]

Got one with a dead octave right in the middle. Only website that claims to have a service manual is super sketchy. I have the user manual but it doesn't even say if you can do a factory reset.

[g1]

Does this reset work?
https://youtu.be/NKV3pAwqUaA

[glebert]

Does this reset work?
https://youtu.be/NKV3pAwqUaA

Mine doesn't have a "function" key. I tried all the combinations of the function keys (variation, reverb, select, etc) with electric piano 1 and nothing did a reset.

[sugeda]

https://acrobat.adobe.com/link/track...3-dd46e76cb87c

[glebert]

https://acrobat.adobe.com/link/track...3-dd46e76cb87c

Thank you!