AMS DMX 15-80 service manual or schematics

[Lincoln999]

I have an old DMX 15-80 which is a mono in model with 2 (working) harmonisers and 2x 560mS delay. It has a fully linear PSU. I think it's an early one because it has no backup battery and needs resetting each time it's switched on but I'm no expert. With a fair bit of care most of it now works but there's some distortion that follows the DAC cards when swapped. Each has it's own signature blip. DAC chips have been replaced (albeit to no effect). I'm not in a particular hurry to fix it but I'd love to be able to have a look at the logic on some of the cards and schematics would make this so much easier, for the DAC cards and the processor at least. I have the regular owner manual that has odd bits of tech stuff in it.

Can anyone help? Thanks.

Lincoln

 

[gyraf]

..here ya' go, in Tech. Docs section, under AMS:

https://groupdiy.com/threads/ams.48432/
/Jakob E.

 

[Lincoln999]

..here ya' go, in Tech. Docs section, under AMS:

https://groupdiy.com/threads/ams.48432/
/Jakob E.

Oh you diamond. Thank You. If there's anything you need I have a fair old library. Will check again when Im off holiday next week but I think I got it all on the phone at least. Cheers.

 

[amplexus]

..here ya' go, in Tech. Docs section, under AMS:

https://groupdiy.com/threads/ams.48432/
/Jakob E.

Well this would have been a life saver a couple months back but WHOOOOO boy is this going in the library now! Incredible!

 

[Lincoln999]

The DAC2 cards in my unit are DMX12.2 which features an ADC 562 chip and is not in any of the above documents although the featured DMX77.4 DAC3 cards (with PCM53 DAC chip) probably are of a roughly similar architecture.

If anyone has the DMX12.2 schematic/info that would be great.

 

[living sounds]

Thanks so much, Jakob! I had no idea scans of this quality even existed...