IBM 88410EU User Manual - Page 103

Light, diagnostics

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Note: To save the test log to a diskette, you must use a diskette that you have formatted yourself; this function does not work with preformatted diskettes. If the diskette has sufficient space for the test log, the diskette may contain other data. Viewing the system-error log You can also view the system-error log from the diagnostic programs. See the instructions in "Viewing error logs from the diagnostic programs" on page 90. Note: The system-error log on the xSeries 236 is available only with the Remote Supervisor Adapter II SlimLine. For descriptions of the error messages that might appear when you run the diagnostic programs, see "Diagnostic error codes" on page 116. Light path diagnostics The server's light path diagnostics feature provides a path that can be followed in distinct phases to help identify the source of an error. The lights are designed to be followed in an orderly progression, depending on the error. The LEDs are viewed in the following order: 1. Begin on the front panel. 2. Proceed to the light path diagnostics panel. 3. Check the system service label. 4. Look inside the server, if necessary. Many errors are first indicated by the illumination of the system-error light in the operator information panel on the front of the server (see "Server controls, LEDs, and power" on page 3). If the system-error light is lit, one or more lights inside the server might also be lit that can direct you to the source of the error. The system information LED lights to alert you that there might be important information recorded in the system-error log. Complete the following steps to view the LEDs. Note: Read Appendix B, "Safety information," on page 153 and "Installation guidelines" on page 11. 1. Check the system-error LED on the operator information panel on the front of the server. A lit system-error LED indicates that a problem exists. Note: Read "Working inside the server with the power on" on page 12 before removing the left-side cover while the server is connected to a power source. 2. Check the light path diagnostics panel by removing the left-side cover. These LEDs indicate the type of error that has occurred and are described in more detail at "Light path diagnostic errors" on page 114. Chapter 5. Diagnostics 93

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Note:
To
save
the
test
log
to
a
diskette,
you
must
use
a
diskette
that
you
have
formatted
yourself;
this
function
does
not
work
with
preformatted
diskettes.
If
the
diskette
has
sufficient
space
for
the
test
log,
the
diskette
may
contain
other
data.
Viewing
the
system-error
log
You
can
also
view
the
system-error
log
from
the
diagnostic
programs.
See
the
instructions
in
“Viewing
error
logs
from
the
diagnostic
programs”
on
page
90.
Note:
The
system-error
log
on
the
xSeries
236
is
available
only
with
the
Remote
Supervisor
Adapter
II
SlimLine.
For
descriptions
of
the
error
messages
that
might
appear
when
you
run
the
diagnostic
programs,
see
“Diagnostic
error
codes”
on
page
116.
Light
path
diagnostics
The
server’s
light
path
diagnostics
feature
provides
a
path
that
can
be
followed
in
distinct
phases
to
help
identify
the
source
of
an
error.
The
lights
are
designed
to
be
followed
in
an
orderly
progression,
depending
on
the
error.
The
LEDs
are
viewed
in
the
following
order:
1.
Begin
on
the
front
panel.
2.
Proceed
to
the
light
path
diagnostics
panel.
3.
Check
the
system
service
label.
4.
Look
inside
the
server,
if
necessary.
Many
errors
are
first
indicated
by
the
illumination
of
the
system-error
light
in
the
operator
information
panel
on
the
front
of
the
server
(see
“Server
controls,
LEDs,
and
power”
on
page
3).
If
the
system-error
light
is
lit,
one
or
more
lights
inside
the
server
might
also
be
lit
that
can
direct
you
to
the
source
of
the
error.
The
system
information
LED
lights
to
alert
you
that
there
might
be
important
information
recorded
in
the
system-error
log.
Complete
the
following
steps
to
view
the
LEDs.
Note:
Read
Appendix
B,
“Safety
information,”
on
page
153
and
“Installation
guidelines”
on
page
11.
1.
Check
the
system-error
LED
on
the
operator
information
panel
on
the
front
of
the
server.
A
lit
system-error
LED
indicates
that
a
problem
exists.
Note:
Read
“Working
inside
the
server
with
the
power
on”
on
page
12
before
removing
the
left-side
cover
while
the
server
is
connected
to
a
power
source.
2.
Check
the
light
path
diagnostics
panel
by
removing
the
left-side
cover.
These
LEDs
indicate
the
type
of
error
that
has
occurred
and
are
described
in
more
detail
at
“Light
path
diagnostic
errors”
on
page
114.
Chapter
5.
Diagnostics
93