IBM 79856au Installation Guide - Page 88

Diagnosing, problems, using, light, diagnostics, Light

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Remind mode, the system-error LED on the front of the server flashes. If a new failure occurs, the system-error LED is lit again. Press the reset button to reset the server and run the power-on self-test (POST). You might have to use a pen or the end of a straightened paper clip to press the button. The server is designed so that LEDs remain lit when the server is connected to an ac power source but is not turned on, provided that the power supply is operating correctly. This feature helps you to isolate the problem when operating system is shut down. Diagnosing problems using light path diagnostics LEDs in two locations on the server are available to help you diagnose problems that might occur during installation. Use them in the following order: 1. Light path diagnostics panel - Look at this panel first. If a system error has occurred, the system-error LED on the front of the light path diagnostics drawer is lit. Slide the latch to the left on the front of the light path diagnostics drawer to access the light path diagnostics panel. Note any LEDs that are lit, and then close the drawer. Important: If the server has a baseboard management controller, clear the BMC log and system-event log after you resolve the condition. This will turn off the information LED. 2. LEDs on the system board - To identify the component that is causing the error, note the lit LED on or beside the component. Light path diagnostics LEDs The following table lists the LEDs on the light path diagnostics panel, the problems that they indicate, and actions to solve the problems. LED Problem Action None, but the An error has occurred and cannot be Check the system error log for information about the error. system-error diagnosed, or the Advanced System LED is lit. Management (ASM) processor on the Remote Supervisor Adapter II SlimLine has failed. The error is not represented by a light path diagnostics LED. OVER SPEC There is insufficient power to power the server. 1. Add an optional power supply if only one power supply is installed. 2. Use 220 V ac input power. 3. Reseat the following components: a. Power supply b. Power backplane 4. Replace the components listed in step 3 one at a time, in the order shown, restarting the server each time. PS 1 The power supply in bay 1 has failed. 1. If all 10 fans are installed, make sure power supply 1 and power supply 2 are installed. 2. Make sure the power supply is correctly seated and the AC power cord is plugged in. 3. If the problem remains, replace the power supply. 74 IBM System x3655 Type 7985: Installation Guide

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Remind
mode,
the
system-error
LED
on
the
front
of
the
server
flashes.
If
a
new
failure
occurs,
the
system-error
LED
is
lit
again.
Press
the
reset
button
to
reset
the
server
and
run
the
power-on
self-test
(POST).
You
might
have
to
use
a
pen
or
the
end
of
a
straightened
paper
clip
to
press
the
button.
The
server
is
designed
so
that
LEDs
remain
lit
when
the
server
is
connected
to
an
ac
power
source
but
is
not
turned
on,
provided
that
the
power
supply
is
operating
correctly.
This
feature
helps
you
to
isolate
the
problem
when
operating
system
is
shut
down.
Diagnosing
problems
using
light
path
diagnostics
LEDs
in
two
locations
on
the
server
are
available
to
help
you
diagnose
problems
that
might
occur
during
installation.
Use
them
in
the
following
order:
1.
Light
path
diagnostics
panel
-
Look
at
this
panel
first.
If
a
system
error
has
occurred,
the
system-error
LED
on
the
front
of
the
light
path
diagnostics
drawer
is
lit.
Slide
the
latch
to
the
left
on
the
front
of
the
light
path
diagnostics
drawer
to
access
the
light
path
diagnostics
panel.
Note
any
LEDs
that
are
lit,
and
then
close
the
drawer.
Important:
If
the
server
has
a
baseboard
management
controller,
clear
the
BMC
log
and
system-event
log
after
you
resolve
the
condition.
This
will
turn
off
the
information
LED.
2.
LEDs
on
the
system
board
-
To
identify
the
component
that
is
causing
the
error,
note
the
lit
LED
on
or
beside
the
component.
Light
path
diagnostics
LEDs
The
following
table
lists
the
LEDs
on
the
light
path
diagnostics
panel,
the
problems
that
they
indicate,
and
actions
to
solve
the
problems.
LED
Problem
Action
None,
but
the
system-error
LED
is
lit.
An
error
has
occurred
and
cannot
be
diagnosed,
or
the
Advanced
System
Management
(ASM)
processor
on
the
Remote
Supervisor
Adapter
II
SlimLine
has
failed.
The
error
is
not
represented
by
a
light
path
diagnostics
LED.
Check
the
system
error
log
for
information
about
the
error.
OVER
SPEC
There
is
insufficient
power
to
power
the
server.
1.
Add
an
optional
power
supply
if
only
one
power
supply
is
installed.
2.
Use
220
V
ac
input
power.
3.
Reseat
the
following
components:
a.
Power
supply
b.
Power
backplane
4.
Replace
the
components
listed
in
step
3
one
at
a
time,
in
the
order
shown,
restarting
the
server
each
time.
PS
1
The
power
supply
in
bay
1
has
failed.
1.
If
all
10
fans
are
installed,
make
sure
power
supply
1
and
power
supply
2
are
installed.
2.
Make
sure
the
power
supply
is
correctly
seated
and
the
AC
power
cord
is
plugged
in.
3.
If
the
problem
remains,
replace
the
power
supply.
74
IBM
System
x3655
Type
7985:
Installation
Guide