IBM 8479 Hardware Maintenance Manual - Page 9

General, checkout

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General checkout The server diagnostic programs are stored on the IBM Enhanced Diagnostics CD. These programs are the primary method of testing the major components of the server: The system board, Ethernet controller, video controller, RAM, keyboard, mouse (pointing device), diskette drive, serial ports, hard drives, and parallel port. You can also use them to test some external devices. See "Diagnostic programs and error messages" on page 10. Also, if you cannot determine whether a problem is caused by the hardware or by the software, you can run the diagnostic programs to confirm that the hardware is working properly. When you run the diagnostic programs, a single problem might cause several error messages. When this occurs, work to correct the cause of the first error message. After the cause of the first error message is corrected, the other error messages might not occur the next time you run the test. A failed system might be part of a shared DASD cluster (two or more systems sharing the same external storage device(s)). Prior to running diagnostics, verify that the failing system is not part of a shared DASD cluster. A system might be part of a cluster if: v The customer identifies the system as part of a cluster. v One or more external storage units are attached to the system and at least one of the attached storage units is additionally attached to another system or unidentifiable source. v One or more systems are located near the failing system. If the failing system is suspected to be part of a shared DASD cluster, all diagnostic tests can be run except diagnostic tests which test the storage unit (DASD residing in the storage unit) or the storage adapter attached to the storage unit. Notes: 1. For systems that are part of a shared DASD cluster, run one test at a time in looped mode. Do not run all tests in looped mode, as this could enable the DASD diagnostic tests. 2. If multiple error codes are displayed, diagnose the first error code displayed. 3. If the computer hangs with a POST error, go to the "Symptom-to-FRU index" on page 89. 4. If the computer hangs and no error is displayed, go to "Undetermined problems" on page 97. 5. Power supply problems, see "Symptom-to-FRU index" on page 89. 6. Safety information, see "Safety information" on page 103. 7. For intermittent problems, check the error log; see "POST error messages" on page 9. © Copyright IBM Corp. 2001 1

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General
checkout
The
server
diagnostic
programs
are
stored
on
the
IBM
Enhanced
Diagnostics
CD
.
These
programs
are
the
primary
method
of
testing
the
major
components
of
the
server:
The
system
board,
Ethernet
controller,
video
controller,
RAM,
keyboard,
mouse
(pointing
device),
diskette
drive,
serial
ports,
hard
drives,
and
parallel
port.
You
can
also
use
them
to
test
some
external
devices.
See
“Diagnostic
programs
and
error
messages”
on
page
10.
Also,
if
you
cannot
determine
whether
a
problem
is
caused
by
the
hardware
or
by
the
software,
you
can
run
the
diagnostic
programs
to
confirm
that
the
hardware
is
working
properly.
When
you
run
the
diagnostic
programs,
a
single
problem
might
cause
several
error
messages.
When
this
occurs,
work
to
correct
the
cause
of
the
first
error
message.
After
the
cause
of
the
first
error
message
is
corrected,
the
other
error
messages
might
not
occur
the
next
time
you
run
the
test.
A
failed
system
might
be
part
of
a
shared
DASD
cluster
(two
or
more
systems
sharing
the
same
external
storage
device(s)).
Prior
to
running
diagnostics,
verify
that
the
failing
system
is
not
part
of
a
shared
DASD
cluster.
A
system
might
be
part
of
a
cluster
if:
v
The
customer
identifies
the
system
as
part
of
a
cluster.
v
One
or
more
external
storage
units
are
attached
to
the
system
and
at
least
one
of
the
attached
storage
units
is
additionally
attached
to
another
system
or
unidentifiable
source.
v
One
or
more
systems
are
located
near
the
failing
system.
If
the
failing
system
is
suspected
to
be
part
of
a
shared
DASD
cluster,
all
diagnostic
tests
can
be
run
except
diagnostic
tests
which
test
the
storage
unit
(DASD
residing
in
the
storage
unit)
or
the
storage
adapter
attached
to
the
storage
unit.
Notes:
1.
For
systems
that
are
part
of
a
shared
DASD
cluster,
run
one
test
at
a
time
in
looped
mode.
Do
not
run
all
tests
in
looped
mode,
as
this
could
enable
the
DASD
diagnostic
tests.
2.
If
multiple
error
codes
are
displayed,
diagnose
the
first
error
code
displayed.
3.
If
the
computer
hangs
with
a
POST
error,
go
to
the
“Symptom-to-FRU
index”
on
page
89.
4.
If
the
computer
hangs
and
no
error
is
displayed,
go
to
“Undetermined
problems”
on
page
97.
5.
Power
supply
problems,
see
“Symptom-to-FRU
index”
on
page
89.
6.
Safety
information,
see
“Safety
information”
on
page
103.
7.
For
intermittent
problems,
check
the
error
log;
see
“POST
error
messages”
on
page
9.
©
Copyright
IBM
Corp.
2001
1