Jump to content

Need Testing Help with Mac External 400K/800K Drive

Recommended Posts

If you have a multimeter and a Macintosh External 400K or 800K floppy drive (models M0130 or M0131), I could use your help with a quick test. Put your meter in continuity check mode (where it beeps if there's a short circuit), and test for continuity between pin 9 of the drive's connector and any other pin. See the photo for the location of pin 9.


You need to make sure your multimeter probes are only touching one pin at a time, and aren't touching the metal shield around the pins, in order to avoid false positives on the test.


Hopefully pin 9 is not connected to anything. But I'm a bit suspicious it may be connected internally to pin 7 or 8, or possibly others. I don't have either of these drives, so I can't do the check myself. This is for exploring some crazy daisy-chain ideas for the Floppy Emu.


Thank you!




Link to post
Share on other sites
  • 2 weeks later...
  • 2 weeks later...

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

  • Create New...