Floppy drive cleaning

[Matt_H]

I'm getting ready to do a teardown of a few floppy drives to try to repair them. They're all suffering from the "can't tell disk is inserted" problem, so those sensors probably need cleaning. Can anyone who's done this before draw/point me to a diagram of where these sensors are and what they look like? I'm nervous about poking random mechanical components without knowing what I'm doing. Thanks in advance!

[Matt_H]

Thanks for the tips, gents! Will remember this for when I get going (won't get to it as soon as I'd hoped, unfortunately). Although I don't think I'll be going the dishwasher route

[Matt_H]

Found the switches at the front of the drive, hit them with some isopropyl alcohol, pushed them in and out a few dozen times, and I now have a working floppy drive! Thanks to all.

Ognix, I will keep your method in mind if this drive runs into trouble again. I suspect I'll need to do a full disassembly at some point in the future.