Roland JC-120 Vibrato not working

[Snithcl1932]

I really need a JC-120 service manual.  I have searched online and all the standard sources have removed this document.  I an looking for some one that has this PDF file.  My Amp S/N:477562

[DrGonz78]

I originally type in a web page you had to have an account to get the file. So here I have the file here instead for you...

http://dropcanvas.com/pu3pr

[Snithcl1932]

I originally type in a web page you had to have an account to get the file. So here I have the file here instead for you...

http://dropcanvas.com/pu3pr

Thanks for the 1979 Service Notes.  The wave forms for Vibrato and Chorus were what I was looking for.  My amp is a later unit.   I have the1983 Service notes, which cover my unit, but have no Vibrato Osc or BBD waveforms.  I think that with the two documents I should be able to work it out.