STC 2920 tapedrive schematics

[Camiel Vanderhoeven via cctalk]

Does anyone have schematics for an STC (StorageTek) 2920 reel-to-reel
tapedrive? I¹m trying to solve a tape-loading issue that seems to be
power-supply related, and some schematics would be very handy right nowŠ

Camiel.