IBM 8479 Hardware Maintenance Manual - Page 25

Temperature, checkout, Diagnosing, errors, Troubleshooting, Ethernet, controller, Network,

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Temperature checkout Proper cooling of the server is important for proper operation and server reliability. For a typical xSeries server, you should make sure: v Each of the drive bays has either a drive or a filler panel installed v Each of the power supply bays has either a power supply or a filler panel installed v The server cover is in place during normal operation v There is at least 50 mm (2 inches) of ventilated space at the sides of the server and 100 mm (4 inches) at the rear of the server v The server cover is removed for no longer than 30 minutes while the server is operating v The processor housing cover covering the processor and memory area is removed for no longer that ten minutes while the server is operating v A removed hot-swap drive is replaced within two minutes of removal v Cables for optional adapters are routed according to the instructions provided with the adapters (ensure that cables are not restricting air flow) v The fans are operating correctly and the air flow is good v A failed fan is replaced within 48 hours In addition, ensure that the environmental specifications for the server are met. See "Features and specifications" on page 3. Note: The speed of the fans will increase if: v One fan fails. v Ambient temperature gets too high. Diagnosing errors To find solutions to problems that have definite symptoms, see "Error symptoms" on page 92. If you cannot find the problem there, go to "Starting the diagnostic programs" on page 12 to test the server. If you have just added new software or a new option and the server is not working, do the following before using the error symptoms table: v Remove the software or device that you just added. v Run the diagnostic tests to determine if the server is running correctly. v Reinstall the new software or new device. Troubleshooting the Ethernet controller This section provides troubleshooting information for problems that might occur with the 10/100 MBps Ethernet controller. Network connection problems If the Ethernet controller cannot connect to the network, check the following: 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 persists, try a different cable. Diagnostics 17

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Temperature
checkout
Proper
cooling
of
the
server
is
important
for
proper
operation
and
server
reliability.
For
a
typical
xSeries
server,
you
should
make
sure:
v
Each
of
the
drive
bays
has
either
a
drive
or
a
filler
panel
installed
v
Each
of
the
power
supply
bays
has
either
a
power
supply
or
a
filler
panel
installed
v
The
server
cover
is
in
place
during
normal
operation
v
There
is
at
least
50
mm
(2
inches)
of
ventilated
space
at
the
sides
of
the
server
and
100
mm
(4
inches)
at
the
rear
of
the
server
v
The
server
cover
is
removed
for
no
longer
than
30
minutes
while
the
server
is
operating
v
The
processor
housing
cover
covering
the
processor
and
memory
area
is
removed
for
no
longer
that
ten
minutes
while
the
server
is
operating
v
A
removed
hot-swap
drive
is
replaced
within
two
minutes
of
removal
v
Cables
for
optional
adapters
are
routed
according
to
the
instructions
provided
with
the
adapters
(ensure
that
cables
are
not
restricting
air
flow)
v
The
fans
are
operating
correctly
and
the
air
flow
is
good
v
A
failed
fan
is
replaced
within
48
hours
In
addition,
ensure
that
the
environmental
specifications
for
the
server
are
met.
See
“Features
and
specifications”
on
page
3.
Note:
The
speed
of
the
fans
will
increase
if:
v
One
fan
fails.
v
Ambient
temperature
gets
too
high.
Diagnosing
errors
To
find
solutions
to
problems
that
have
definite
symptoms,
see
“Error
symptoms”
on
page
92.
If
you
cannot
find
the
problem
there,
go
to
“Starting
the
diagnostic
programs”
on
page
12
to
test
the
server.
If
you
have
just
added
new
software
or
a
new
option
and
the
server
is
not
working,
do
the
following
before
using
the
error
symptoms
table:
v
Remove
the
software
or
device
that
you
just
added.
v
Run
the
diagnostic
tests
to
determine
if
the
server
is
running
correctly.
v
Reinstall
the
new
software
or
new
device.
Troubleshooting
the
Ethernet
controller
This
section
provides
troubleshooting
information
for
problems
that
might
occur
with
the
10/100
MBps
Ethernet
controller.
Network
connection
problems
If
the
Ethernet
controller
cannot
connect
to
the
network,
check
the
following:
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
persists,
try
a
different
cable.
Diagnostics
17