Epson 386SX - Manual (Page 215)

Run All Above Checks
To run all the tests on the menu in sequence, select 11. When
you choose this option, all checks for the color adapter and
CRT are performed automatically in sequential order. Although
you do not start each test, you must still supply the appropriate
responses to progress from one test to the next. Press E
SC
to
return to the menu.
Diskette Drives and Controller Check
Use this option to test the performance of the diskette drive(s)
installed in your computer. This test includes several checks
that allow you to identify particular problems related to your
diskette drives.
Before running these tests, format a diskette to use for the tests
that write data on the disk in the drive. To test a 1.44MB drive,
you can use either a 1.44MB diskette or a 720KB diskette; but it
is better to use the higher capacity diskette. In a 720KB drive,
you can use only a 720KB diskette.
To test a 1.2MB drive, you can use a 1.2MB or a 360KB
diskette. However, to test the full capacity of the drive, use only
a 1.2MB diskette. In a 360KB drive, you can use only a 360KB
diskette.
Performing System Diagnostics C - 2 3