Epson EQUITY 386/33 PLUS - Manual (Page 163)

4. If you are still having trouble with the drive, run the
Floppy disk system diagnostic tests, described in
Appendix B. If the diagnostics program indicates an error,
consult your Epson dealer.
5. If the diskette drive is making loud or unusual noises, contact
your Epson dealer.
Hard Disk Problems
If you are having a problem with a hard disk, it could be the
result of improper installation, incomplete disk preparation, or
corrupted data. The suggestions in this section are divided into
three categories:
Installing the drive
Preparing the drive for use
Accessing data on the drive.
Consult the section that seems most likely to cover the
problem you are having. For example, if you have been able
to use data on your disk in the past but suddenly cannot, see
“Accessing Data on the Drive.”
Caution
If your disk has data on it, be very careful before you
perform any procedure that may erase data (such as
formatting the disk). Always be sure to back up your data
before reformatting or repartitioning the disk drive. Consult
your dealer if you have any questions.
Troubleshooting C-15