The Prince Neos 1000 is essentially the same machine as the Ektelon Model H. I have an Adobe file with the entire manual for the Neos. It is 21 pages (4.68 MB) and has general operational instructions along with a complete diagram of all parts and part numbers.
It can be downloaded from this page:
(see the link that says "Click here to download the Prince Neos 1000 instruction manual")
If you are unable to download the file, please send an email to me at firstname.lastname@example.org
... I will be glad to forward a copy to you.
Also, if you ever need parts or advice on maintaining your machine, the following site will take care of all your needs: http://www.tennismachines.com/tennismachines/index.html
The Ektelon Model H (a.k.a. Prince Neos 1000) is the sturdiest, most reliable, and intelligently designed machine ever made. I have done 4,000+ rackets on Ektelon machines over 3 decades, and don't ever want to use anything else.