If there are insert send/return jacks, these are "direct out", and are adjustable with internal jumpers to be pre/post fader, EQ, or (?).
1987-era 8000 desk would have similar internal strategy to a model 200B, just more (8-bus, more EQ) and bigger with VCA's.
Does yours have the optional 20-segment meters on each channelstrip?
Study the user manual (you got one, right?), or download the data from harmon-intl or Soundcraft web site. SC desks of this era are very fixable, and a big-frame model in good shape IS a good deal for $750.