IBM 887022X Maintenance Manual - Page 76

diagnostic

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Note: In a merged system of more than one server, light path diagnostics will indicate errors on the primary server only. The following procedure describes how to follow the light path. Note: Read "Safety information" on page 257, "Handling static-sensitive devices" on page 80, and "Working inside the server with power on" on page 79. 1. Check the light path diagnostics panel and note which lights are illuminated. These lights will indicate the type of error. These lights are described more fully at "Light path LED errors" on page 190. Figure 27. Light path diagnostics panel The light path diagnostics panel is located inside the light path diagnostics drawer on the front right of the server. Press on the front of the light path diagnostics drawer and the light path diagnostic panel will be exposed. More information about the individual lights on this panel is available at "Light path LED errors" on page 190. = 2. After you have viewed the light path diagnostics panel, check the lights on the top of the server, including the fans, and note which lights are illuminated. Six LEDs on the center plane are visible through the top cover. If one of these is illuminated, the number next to the illuminated light indicates the particular board implicated in the error. 66 xSeries 445 Type 8870: Hardware Maintenance Manual and Troubleshooting Guide

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Note:
In
a
merged
system
of
more
than
one
server,
light
path
diagnostics
will
indicate
errors
on
the
primary
server
only.
The
following
procedure
describes
how
to
follow
the
light
path.
Note:
Read
“Safety
information”
on
page
257,
“Handling
static-sensitive
devices”
on
page
80,
and
“Working
inside
the
server
with
power
on”
on
page
79.
1.
Check
the
light
path
diagnostics
panel
and
note
which
lights
are
illuminated.
These
lights
will
indicate
the
type
of
error.
These
lights
are
described
more
fully
at
“Light
path
LED
errors”
on
page
190.
The
light
path
diagnostics
panel
is
located
inside
the
light
path
diagnostics
drawer
on
the
front
right
of
the
server.
Press
on
the
front
of
the
light
path
diagnostics
drawer
and
the
light
path
diagnostic
panel
will
be
exposed.
More
information
about
the
individual
lights
on
this
panel
is
available
at
“Light
path
LED
errors”
on
page
190.
=
2.
After
you
have
viewed
the
light
path
diagnostics
panel,
check
the
lights
on
the
top
of
the
server,
including
the
fans,
and
note
which
lights
are
illuminated.
Six
LEDs
on
the
center
plane
are
visible
through
the
top
cover.
If
one
of
these
is
illuminated,
the
number
next
to
the
illuminated
light
indicates
the
particular
board
implicated
in
the
error.
Figure
27.
Light
path
diagnostics
panel
66
xSeries
445
Type
8870:
Hardware
Maintenance
Manual
and
Troubleshooting
Guide