Otari MTR-90 II Record & Playback Amp Card
schematic (pdf 1.6MB)
Sorry, this is as clear as the original, if ANYONE has a clear schematic please contact me, I've never seen one.
Otari MTR-90 III Schematic Diagrams, 300dpi
(pdf 35MB)
Otari MTR-90 III Schematic Diagrams, reduced file size
(pdf 7MB)
Otari MTR-90 II EC-101 synchronizer manual
(pdf 11MB)