Hi,
I got one of the 169s and also the complete manual scanned in good quality, with user guides, schematics, PCB layouts and circuit explanations. Haven't used the mixer much, but it is quite good. I fixed it up and had to replace some things - among them 1 input xformer and a broken fader knob. Would you believe that little plastic thing cost 3 times as much as the input xformer??!! Studer replacement parts are VERY expensive. The scanned manual is a huge pdf file of 330 MB. I don't have any place to host it, but if anyone has, I can upload it.
kly