2.
Check
for
loose
cables
in
the
power
subsystem.
Also
check
for
short
circuits,
for
example,
if
there
is
a
loose
screw
causing
a
short
circuit
on
a
circuit
board.
3.
Remove
adapters
and
disconnect
the
cables
and
power
connectors
to
all
internal
and
external
devices
until
the
server
is
at
the
minimum
configuration
required
to
start
the
server
(see
“Minimum
operating
requirements”
on
page
119).
4.
Reconnect
all
ac
power
cords
and
turn
on
the
server.
If
the
server
starts
up
successfully,
replace
adapters
and
devices
one
at
a
time
until
the
problem
is
isolated.
If
the
server
does
not
start
up
from
the
minimal
configuration,
replace
FRUs
of
minimal
configuration
one
at
a
time
until
the
problem
is
isolated.
To
use
this
method,
it
is
important
to
know
the
minimum
configuration
required
for
a
system
to
start
(see
page
119).
Troubleshooting
the
Ethernet
controller
This
section
provides
troubleshooting
information
for
problems
that
might
occur
with
the
10/100/1000
Mbps
Ethernet
controller.
Network
connection
problems
If
the
Ethernet
controller
cannot
connect
to
the
network,
check
the
following
conditions:
v
Make
sure
that
the
cable
is
installed
correctly.
The
network
cable
must
be
securely
attached
at
all
connections.
If
the
cable
is
attached
but
the
problem
remains,
try
a
different
cable.
If
you
set
the
Ethernet
controller
to
operate
at
either
100
Mbps
or
1000
Mbps,
you
must
use
Category
5
or
higher
cabling.
v
Determine
whether
the
hub
supports
auto-negotiation.
If
it
does
not,
try
configuring
the
integrated
Ethernet
controller
manually
to
match
the
speed
and
duplex
mode
of
the
hub.
v
Check
the
Ethernet
controller
LEDs
on
the
rear
of
the
server.
These
LEDs
indicate
whether
there
is
a
problem
with
the
connector,
cable,
or
hub:
–
The
Ethernet
transmit/receive
activity
LED,
on
the
rear
of
the
server,
is
lit
when
the
Ethernet
controller
sends
or
receives
data
over
the
Ethernet
Network.
If
the
Ethernet
transmit/receive
activity
LED
is
off,
make
sure
that
the
hub
and
network
are
operating
and
that
the
correct
device
drivers
are
installed.
–
The
Ethernet
link
status
LED,
on
the
rear
of
the
server,
is
lit
when
the
Ethernet
controller
receives
a
LINK
pulse
from
the
hub.
If
the
LED
is
off,
there
might
be
a
defective
connector
or
cable
or
a
problem
with
the
hub.
v
Make
sure
that
you
are
using
the
correct
device
drivers,
which
are
supplied
with
the
server.
v
Check
for
operating-system-specific
causes
for
the
problem.
v
Make
sure
that
the
device
drivers
on
the
client
and
server
are
using
the
same
protocol.
v
Test
the
Ethernet
controller.
The
way
the
Ethernet
controller
is
tested
depends
on
which
operating
system
you
are
using
(see
the
Ethernet
controller
device
driver
readme
files).
Ethernet
controller
troubleshooting
chart
Use
the
following
troubleshooting
chart
to
find
solutions
to
10/100/1000
Mbps
Ethernet
controller
problems
that
have
definite
symptoms.
80
xSeries
336
Type
1879
and
Type
8837:
Hardware
Maintenance
Manual
and
Troubleshooting
Guide
Summary of Contents for 88371RU
Page 1: ...xSeries 336 Type 1879 and Type 8837 Hardware Maintenance Manual and Troubleshooting Guide...
Page 2: ......
Page 3: ...xSeries 336 Type 1879 and Type 8837 Hardware Maintenance Manual and Troubleshooting Guide...
Page 15: ...Server on off 8 to 80 Shipment 5 to 100 Chapter 1 General information 5...
Page 22: ...12 xSeries 336 Type 1879 and Type 8837 Hardware Maintenance Manual and Troubleshooting Guide...
Page 24: ...14 xSeries 336 Type 1879 and Type 8837 Hardware Maintenance Manual and Troubleshooting Guide...
Page 92: ...82 xSeries 336 Type 1879 and Type 8837 Hardware Maintenance Manual and Troubleshooting Guide...
Page 149: ...Appendix B Safety information 139...
Page 150: ...140 xSeries 336 Type 1879 and Type 8837 Hardware Maintenance Manual and Troubleshooting Guide...
Page 151: ...Appendix B Safety information 141...
Page 152: ...142 xSeries 336 Type 1879 and Type 8837 Hardware Maintenance Manual and Troubleshooting Guide...
Page 153: ...Appendix B Safety information 143...
Page 154: ...144 xSeries 336 Type 1879 and Type 8837 Hardware Maintenance Manual and Troubleshooting Guide...
Page 155: ...Appendix B Safety information 145...
Page 165: ...Appendix B Safety information 155...
Page 166: ...156 xSeries 336 Type 1879 and Type 8837 Hardware Maintenance Manual and Troubleshooting Guide...
Page 167: ...Appendix B Safety information 157...
Page 168: ...158 xSeries 336 Type 1879 and Type 8837 Hardware Maintenance Manual and Troubleshooting Guide...
Page 172: ...162 xSeries 336 Type 1879 and Type 8837 Hardware Maintenance Manual and Troubleshooting Guide...
Page 185: ......
Page 186: ...Part Number 25K8109 1P P N 25K8109...
