I'm still not sure it has full sound? It should have a #1 at the end not a zero.
Some only came with horn and bell. (xx-xxxx-0)
What is the power supply you are using?
I'm not sure about full sound either. I think the manual is kind of generic for the full-featured board. The two black boxes on the board I think are the whistle and there is a speaker. My power supply is a refurbished Lionel Trainmaster (no model number on it or anything specific). Has an A and a B lever and a 14volt constant supply with direction buttons.