3 ms·
The disk seek problem didn't mysteriously disappear. You need to bust out some some contact cleaner and clean those header strip connections, both sides.
by CodeWriter23 10y ago
The disk seek problem didn't mysteriously disappear. You need to bust out some some contact cleaner and clean those header strip connections, both sides.
- socmag 10y agoYes it is mysterious. Was that drive known good then? Also what is the track sense mechanism? Optical shaft encoder? Could have been just a bunch of dust. Also a lot of drives used a Hall sensor or even an opto-coupler with a slot to detect track zero. First thing was to calibrate the head with a track zero seek. Another thing. Those flat ribbon cables are prone to a lot of RFI over long distances, especially when you have them hanging around on the bench. Notice some of the other ribbon cables are twisted pair. A lot better! I've wire wrapped my own disk controllers back in the early 80's. This series is serious nostalgia! <3 Curious to know what the final problem will end up being diagnosed as. The smell of old hardware like that is literally burned in my brain!