HP 9133D Manual page 15

TROUBLESHOOTING
NOTE
A disc must be in the drive to perform test 4,6,8,10, and 12. Ensure that the disc is not write protected
and that it is an initialized scratch disc.
Available Test
o
2
3
4
5
6
7
8
9
10
11
RAM
ROM
HP-IB
FOC chip
Floppy Seek
Winchester Seek
Floppy Speed
Winchester Speed
Floppy
Write/Verify
Winchester
Write/Verify
Floppy Verify
Winchester
Verify
All possible patterns are written in all locations
of both RAMS.
A checksum calculation is performed.
Two of the registers on the HP-IB chip are
written and their contents verified.
Two of the registers on the FOC chip are
written and their contents verified.
Commands are given to the FOC to move the head
on and off track
O.
The track 0 indicator
is checked to see that movement occurred.
Commands are given to the
W01010
to restore to
cylinder 0 and then step off of cylinder
O.
The
track 0 indicator is checked to see that it works.
The head is stepped to track 35 and loaded. The
period of the index pulse is measured and
compared against the specification. No test is
performed if there is no medium in the drive.
The spindle speed of the drive is checked and
compared with the allowed range.
Every sector on the disc is written and the data
is verified. All user data on the medium is lost.
All sectors on the self test cylinder are written
and read. Each byte including the ECC is checked.
Error correction is also checked. No user data is
affected.
All sectors in the data area of the disc
are checked for CRC errors. No user data is
affected.
All sectors in the data area of the disc are
checked for CRC errors. No user data is changed.
4-5