todd@SEAS.UCLA.EDU (10/12/88)
My 512K Mac internal and external drive eats floppies (won't eject
them) and I need pliers to get them out. The same thing has happened
to another one of our disk drives on a different MACs. Does anyone
know how to fix this hw problem myself?
--todd booth / ucla data communications
ArpaNet todd@seas.ucla.EDU / BitNet csdctgb@uclamvs.bitnet
UUCP {ihnp4,ucbvax}!ucla-cs!todd / 213 825-1933kaufman@polya.Stanford.EDU (Marc T. Kaufman) (10/12/88)
In article <16718@shemp.CS.UCLA.EDU> todd@SEAS.UCLA.EDU (Todd Booth) writes: >My 512K Mac internal and external drive eats floppies (won't eject >them) and I need pliers to get them out. The same thing has happened >to another one of our disk drives on a different MACs. Does anyone >know how to fix this hw problem myself? This recently happened to me. I will tell you what I did to fix it, but there are no guarantees that this will work for you.: The floppy mechanism has a little motor that locks down and ejects the disk. If you look at a naked mechanism from the front, the motor is at the right rear of the unit (you can see one of the nylon gears when you look down on it). Just in front of the motor is a molded plastic well with a snap-on lid and some wires going into it. This is a switch that is actuated by a cam driven by the motor. In my case, the switch contacts were dirty. To get to the switch, CAREFULLY release the plastic retaining tabs (2) holding the top of the switch, and pull up. You will notice that you have the phosphor bronze switch leaves in your hand. Clean the contact area with a little tape-head cleaner and/or a burnishing tool. Now try to re-insert the switch. Notice that the lower body has slots to hold the contacts. If you are successful, your unit may work again. Good luck. Marc Kaufman (kaufman@polya.stanford.edu) PS: Don't blame me if it doesn't!