IBM x3500 Installation Guide - Page 104

Light, diagnostics - cpu

Page 104 highlights

Light path diagnostics The following illustration shows the remind button and the LEDs on the light path diagnostics panel. The light path diagnostics panel is inside the server under the left-side cover, and the error LEDs are also visible through the left-side cover. 1 POWER SUPPLY 2 CONFIG TEMP REMIND MEMORY DASD/ RAID FAN CPU S_ERR VRM PCI BUS SP BUS NMI SEE INSIDE COVER FOR MORE SERVICE INFORMATION Press the remind button on the light path diagnostics panel to acknowledge that an error has occurred but indicate that you will not take immediate action. When you press the remind button, the system-error LED flashes every 2 seconds until the error is corrected. If another error occurs, the system-error LED stops flashing and is lit again. For more information about light path diagnostics, see the Problem Determination and Service Guide on the IBM System x Documentation CD. Diagnosing problems using light path diagnostics LEDs in three locations on the server are available to help you diagnose problems that might occur during installation. Use them in the following order: 1. LEDs on the front of the server: Look at the front of the server. If a system error has occurred, the system-error LED on the front of the server is lit. 2. LEDs on the left-side cover: There are 13 LEDs and a system service label on the left-side cover. Note the lit LEDs and follow the instructions on the system service label. 3. LEDs on the system board: To identify the component that is causing the error, note the lit LED next to the component. 90 IBM System x3500 Type 7977: Installation Guide

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Light
path
diagnostics
The
following
illustration
shows
the
remind
button
and
the
LEDs
on
the
light
path
diagnostics
panel.
The
light
path
diagnostics
panel
is
inside
the
server
under
the
left-side
cover,
and
the
error
LEDs
are
also
visible
through
the
left-side
cover.
CPU
VRM
S_ERR
MEMORY
DASD/
RAID
NMI
SP BUS
FAN
POWER
SUPPLY
PCI
BUS
2
1
CONFIG
TEMP
REMIND
SEE INSIDE COVER FOR MORE SERVICE INFORMATION
Press
the
remind
button
on
the
light
path
diagnostics
panel
to
acknowledge
that
an
error
has
occurred
but
indicate
that
you
will
not
take
immediate
action.
When
you
press
the
remind
button,
the
system-error
LED
flashes
every
2
seconds
until
the
error
is
corrected.
If
another
error
occurs,
the
system-error
LED
stops
flashing
and
is
lit
again.
For
more
information
about
light
path
diagnostics,
see
the
Problem
Determination
and
Service
Guide
on
the
IBM
System
x
Documentation
CD.
Diagnosing
problems
using
light
path
diagnostics
LEDs
in
three
locations
on
the
server
are
available
to
help
you
diagnose
problems
that
might
occur
during
installation.
Use
them
in
the
following
order:
1.
LEDs
on
the
front
of
the
server:
Look
at
the
front
of
the
server.
If
a
system
error
has
occurred,
the
system-error
LED
on
the
front
of
the
server
is
lit.
2.
LEDs
on
the
left-side
cover:
There
are
13
LEDs
and
a
system
service
label
on
the
left-side
cover.
Note
the
lit
LEDs
and
follow
the
instructions
on
the
system
service
label.
3.
LEDs
on
the
system
board:
To
identify
the
component
that
is
causing
the
error,
note
the
lit
LED
next
to
the
component.
90
IBM
System
x3500
Type
7977:
Installation
Guide