Macintosh 128K, 512K, Plus: ID = 02 Errors From External Drive

PROBLEM DESCRIPTION: Using external drive on left side of Macintosh gets 02
errors.

CAUSE: Drive could be getting RFI interference from power/sweep PCB inside of
Mac.

CURE: Use the external drive on the right side of the Mac. If problem still
not saved, search on Macintosh General Troubleshooting.