Sensor swab and a couple of drops of cleaning fluid. I had a kit from way back when for the DX cameras I don't have anymore, I use different swabs on the Zs, so I often cannibalize the old swabs as they're excellent tiny dust-free cloths. Perfect for gently cleaning a mirror.
Then I used some isopropyl on the plastic bits around the outside in there and a pec pad to finish it up. 5 minute job. It was mostly dust, but a touch oily is all. Nothing fungussy or bad. The guts in the film transport look brand new. I'm guessing the camera ran a few rolls of film then sat on a shelf.
@Patrick Robert James you're comparing apples to fords. I'm using AF-D lenses and G lenses. The Gs have internal motors and are likely as close to the equal comparison to Canon's lenses as you'll get, and they might be a touch slower than a canon. But it feels more equivalent because it's internally driven and quieter.
I shot a roll last night, some with a 28mm G lens, and the N80 isn't the fastest focusing camera, but it's not slow. The rest was with an 85 af-D and I tested the camera with a 35mm af-d. They are definitely slower than when used the last camera I had out, an F4. But not enough that it mattered for street photography.
These Ds use a screw and are driven by a motor in the camera body, totally unlike Canon's lenses. That's why they're so small and light and inexpensive, but also why they move about and clunk into place. That motor IS slower than professional cameras on the N80. But pro cameras also use a lot more battery to be able to drive the screw so darned fast and this is just two CR123s and a light weight camera. And the comparison from a D lens to an internal motor Canon isn't apt.
Anyway, the only Canon camera I've used recently was a Rebel G that I cleaned up for a friend. It's roughly the equivalent -- simple feature set, comparable to an N75, even came with a 35-80 zoom lens -- and it wasn't faster enough to notice.
Also, if you're thinking of the pro-sumer and professional Canons, those things were LIGHTNING fast focusers at the end of the film era. Like sports photography oriented fast even in the mid level. Really good software and interesting feature sets, too. I'm betting that Rebel G would have felt slow to you compared to them.
