General Category > Lisa Troubleshooting and Repair

Issues with 800K drive motor control

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iJol:
I guess it's not a problem with manual and auto-inject drives, the difference between them started with the 1.44 MB SuperDrives in the LC-Series if I remember correctly  - you can see this on the several LCs: some have a flush faceplate and some have a rounded floppy faceplate for pushing the floppy in.

It's more a difference between the wiring of 400k and some, not all, 800k drives.

Pin 9 carries -12v and pin 20 carries the spindle speed signal for the 400k drives, which some of the 800k drives will confuse because they don't need these signals. There are two kinds of 800k drives, the red label and the black label ones. On black label drives, pin 9 is not connected and so nothing will happen, but on the red label drives, pin 9 goes to the manual eject button and your drive will go crazy.

My Lisa 2/10 / Sun Mac XL had an 800k red label drive with a modded connector missing Pin 9 and Pin 20.

andrew:
The yellow stripe cables came; I ordered two of them. I tried one cable and was getting a diskette controller error (I/O board, error 57). I tried the other and it worked just fine. So there... It works!

Thank you all for the assistance!

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