JC-120 Schematic Needed

[AtomicMassUnit]

This is a '94 version from what I can tell. I have found several schematics here, and none match it so far. Boards say made in Italy on them. Anyone have it?

[soundguruman]

I am trying to attach a PDF that matches a really old one I was working on yesterday.

[teemuk]

This is a '94 version from what I can tell. I have found several schematics here, and none match it so far. Boards say made in Italy on them. Anyone have it?

They have varied very, very widely from the beginning. Is it the one with effects loop, in other words JC-120UT...?

If so, google search for JC-120 schematic pack, i think there was even a thread about how to find a good handful of schematics for different revisions of that thing.

Otherwise, just contact Roland.

[soundguruman]

I think just call roland and get the schematic, that's right. (323) 890-3700

[AtomicMassUnit]

I think just call roland and get the schematic, that's right. (323) 890-3700

Called them, they said schematics are not available to the public. I have a friend who is a Roland dealer. I'm getting him to call them and see if he can get it.

This is a JC-120U according to the back.

[teemuk]

If I remember right, the correct schematic should be in this one...
http://www.schematicsforfree.com/arc...d%20JC-120.zip

[soundguruman]

That's weird cause they sent me a schematic, not even 5 weeks ago. Hmmmm. They also said they would sell me parts.
Maybe because I'm a licensed repair shop perhaps.
But OK go to the dealer.
Sorry, the JC120 I have here does not have speaker jacks, although the schematic shows it does. I think this is a very early one.
I suppose there are many versions, as had been said.
It's actually a kind of rare amp to repair. Partially because they don't break too often and also because not that many are around.

[AtomicMassUnit]

Thanks so much guys!

teemuk, that has the schematic I needed. Much appreciated! It's the JC-120UT.