Diagnostics
This
section
provides
basic
troubleshooting
information
to
help
you
identify
and
resolve
some
problems
that
might
occur.
If
you
cannot
locate
and
correct
the
problem
using
the
information
in
this
chapter,
see
for
more
information.
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
Diagnostic
programs
The
system
diagnostic
programs
are
stored
on
the
Device
Drivers
and
IBM
Enhanced
Diagnostics
CD.
These
programs
are
the
primary
methods
of
testing
the
major
components
of
the
computer.
See
for
more
information.
v
Error
symptom
charts
This
charts
lists
problem
symptoms
and
steps
to
correct
each
problem.
See
the
for
more
information.
v
System-board
error
LEDs
An
LED
on
the
system
board
might
be
lit
to
help
isolate
an
error
indicated
by
the
system
error
LED
on
the
front
of
the
computer.
See
the
for
more
information.
POST
When
you
turn
on
the
computer,
the
power-on
self-test
(POST)
performs
a
series
of
tests
to
check
the
operation
of
system
components
and
some
of
the
installed
options.
If
POST
finishes
without
detecting
any
problems,
the
first
window
of
your
operating
system
or
application
program
appears.
If
POST
detects
a
problem,
more
than
one
beep
might
sound,
and
an
error
message
appears
on
the
screen,
or
both.
Notes:
1.
If
you
have
a
user
password
set,
you
must
type
the
password
and
press
Enter,
when
prompted,
before
the
operating
system
will
load.
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
resolve
the
next
time
you
run
the
test.
©
Copyright
IBM
Corp.
2002
15
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