Sorry again for the delaaaaaaaayed response.
I have the a tough time getting to this site for some reason.
Time-Out problems, I can't tell if the site is up or not.
Anyway, I have searched the net for literally decades looking for
System 100M documentation. Many of the best sites have gone away....
BUT, I do have what is supposed to be the M-184 Users Manual, at
least the only thing I have ever found. (Attached)
It was a poor medium-resolution scan. I tried my best to clean it up
with Photoshop. It appears more legible at least.
I also attached a fairly clean copy of the M-184 Service Notes.
These are actually .pdf files. I changed the file extensions from
.pdf to .png to circumvent the apparent restriction this site has
with Acrobat files. Just change the extensions back to .pdf.