Diagnostics
This
section
provides
basic
troubleshooting
information
to
help
resolve
some
common
problems
that
might
occur
with
the
server.
Diagnostic
tools
overview
The
following
tools
are
available
to
help
you
identify
and
resolve
hardware-related
problems:
v
POST
beep
codes,
error
messages,
and
error
logs
The
power-on
self-test
(POST)
generates
beep
codes
and
messages
to
indicate
successful
test
completion
or
the
detection
of
a
problem.
See
for
more
information.
v
Light
path
diagnostics
feature
Use
the
light
path
diagnostics
feature
to
identify
system
errors
quickly.
v
Diagnostic
programs
and
error
messages
The
server
diagnostic
programs
are
stored
in
upgradable
read-only
memory
(ROM)
on
the
I/O
board.
These
programs
are
the
primary
method
of
testing
the
major
components
of
the
server.
See
for
more
information.
Note:
The
diagnostic
programs
and
error
messages
are
specific
to
each
server.
When
running
diagnostics
and
reading
error
messages
of
two
merged
servers,
be
sure
that
you
know
which
server
gave
the
error
before
attempting
any
repairs
or
changing
any
settings.
POST
When
you
turn
on
the
server,
it
performs
a
series
of
tests
to
check
the
operation
of
server
components
and
some
of
the
options
installed
in
the
server.
This
series
of
tests
is
called
the
power-on
self-test,
or
POST.
If
POST
finishes
without
detecting
any
problems,
a
single
beep
sounds,
and
the
first
screen
of
your
operating
system
or
application
program
appears.
If
POST
detects
a
problem,
more
than
one
beep
sounds,
or
an
error
message
appears
on
your
screen.
See
and
for
more
information.
Notes:
1.
If
you
have
a
power-on
password
set,
you
must
type
the
password
and
press
Enter,
when
prompted,
before
POST
will
continue.
2.
A
single
problem
might
cause
several
error
messages.
When
this
occurs,
work
to
correct
the
cause
of
the
first
error
message.
After
you
correct
the
cause
of
the
first
error
message,
the
other
error
messages
usually
will
not
occur
the
next
time
you
run
the
test.
3.
When
turning
on
the
16-way
configuration
(models
1VX,
2VX,
3VX
only)
you
might
hear
a
beep
code
of
one
long
beep
and
two
short
beeps
if
no
video
device
is
connected
to
the
secondary
server.
This
is
an
acceptable
action.
©
Copyright
IBM
Corp.
2001
51
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