You will find that about 1/2 of the commands there for the LPX-510 do not work. Yamaha has been made aware of this.

Most of the non-working commands aren't really needed for customer operation.

Input select and Power Off do work..... unfortuantely, Power on does not. You can work around that by issuing a toggle power command since the unit requires a second "confirmation" power command to turn off, but you will have to put up with it displaying the shutdown dialog box for a few seconds.