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TROUBLESHOOTING AND DIAGNOSTICS
FAULT LED INDICATIONS DURING
EXECUTION
OF SERVICE SELFTESTS
The FAULT
LED will go on for one second (To show that it works) at the beginning of each test. The LED
will then go on, and stay on, during the length of the test. A pass indication is displayed by the FAULT LED
blinking 5 times. A failure is displayed by the FAULT LED remaining on.
SERVICE SELFTESTS AVAILABLE
TEST $
TEST
TIME
TEST. DESCRIPTION
Min
Sec
0
RAM
: 2
All
possible
patterns
are
written
in all
locations
of
the microprocessor
RAM
]
ROM
: 3
A checksum
calculation
is
performed.
2
CONTROLLER
21
The
HP-IB
chip,
Disc
Controller
chip,
and
buffer
RAM
are
tested.
3
FLEXIBLE
3
A seek
test,
index
period
test,
and a
Write/Read
compare
on
the
system
cylinder
are
performed
on
the
flexible
disc
drive.
4
FLEXIBLE
DISC
:40
All
sectors
in
the
data
area
of
the
disc
DRIVE
VERIFY
are
checked
for
CRC
errors.
No
user
data
is affected.
5
FLEXIBLE
DISC
1 :40
Formats
disc.
DRIVE
FORMAT
6
WINCHESTER
7
:30
A thorough
seek
test,
a W/R/compare
on
the
system
cylinder,
and
a
recalibration
is performed
on
the Winchester
disc
drive.
7
WINCHESTER
2 :30
All
sectors
in the
data
area
of
the disc
VERIFY
are
checked
for CRC errors.
No user data
is
changed.
8
WINCHESTER
ad
Checks
to
see
if the Winchester
is
CONNECTED
connected.
9
ECC
Checks
the
error
correction
portion
of
the Disc
Controller
chip.
If a Flexible
disc
drive
test
is selected
on
the HP 9154A/B,
the
test
will
fail.
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