Studer, Music Mixer, models:

189 MK II	Operating Lnstructions
Compact InfinityCore 300	Operating Instructions Manual
D19m	Service Instructions Manual
OnAir 2000M2	Operating And Service Instructions
OnAir 3000	Operating Instructions Manual
OnAir 500 Modulo	Operating Instructions Manual
SW V4.0 OnAir 1000	Operating And Service Instructions
Vista 5 M2	User Manual