Epson Equity II - Manual (Page 125)

Before any checks are performed, the program determines the number
of floppy disk drives installed in your computer. If you have more than one
drive, you see this prompt each time you select a test:
Check which drive (A/B)?
Press A or B and then Enter.
If any errors occur, record the error code and message and contact your
dealer. Always have the floppy disk drive serviced by your dealer.
Sequential seek check
This test checks the ability of the read/write heads to locate any part of
the diskette. This action by a read/write head is called a seek. During this
test, each head seeks sequentially from the innermost track to the outermost
track. The innermost track is track 39 for 360KB diskettes and track 79 for
1.2MB diskettes.
Select option 1 from the menu to start this test.
The program displays the number of each track it finds. For example,
with a 360KB floppy disk, the first message you see is:
Current track is 39
The track number counts down (from 39 or 79) to 0.
The seek is performed by each head, so you see the count twice. If no
errors occur, the menu displays.
Random seek check
This test is identical to the sequential seek check, except that the seek
operation is performed on each track in random order instead of sequential
order.
Select option 2 from the menu to start this test.
Write, read check
This test checks the ability of the selected disk drive to read and write
data from a diskette. The test writes to and reads from each cylinder on the
diskette, starting at the center.
Note: This test destroys all data on the diskette in the selected drive.
Select option 3 from the menu to start this test.
4-18 Diagnostics