–
The
cable
must
be
securely
attached
at
all
connections.
If
the
cable
is
attached
but
the
problem
remains,
try
a
different
cable.
–
You
must
use
Category
5
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
panel
of
the
server.
These
LEDs
indicate
whether
there
is
a
problem
with
the
connector,
cable,
or
hub.
–
The
Ethernet
link
status
LED
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.
–
The
Ethernet
transmit/receive
activity
LED
is
lit
when
the
Ethernet
controller
sends
or
receives
data
over
the
Ethernet
network.
If
the
Ethernet
transmit/receive
activity
light
is
off,
make
sure
that
the
hub
and
network
are
operating
and
that
the
correct
device
drivers
are
installed.
v
Check
the
Ethernet
activity
LED
on
the
rear
of
the
server.
The
Ethernet
activity
LED
is
lit
when
data
is
active
on
the
Ethernet
network.
If
the
Ethernet
activity
LED
is
off,
make
sure
that
the
hub
and
network
are
operating
and
that
the
correct
device
drivers
are
installed.
v
Check
for
operating-system-specific
causes
of
the
problem.
v
Make
sure
that
the
device
drivers
on
the
client
and
server
are
using
the
same
protocol.
If
the
Ethernet
controller
still
cannot
connect
to
the
network
but
the
hardware
appears
to
be
working,
the
network
administrator
must
investigate
other
possible
causes
of
the
error.
Solving
undetermined
problems
If
the
diagnostic
tests
did
not
diagnose
the
failure
or
if
the
server
is
inoperative,
use
the
information
in
this
section.
If
you
suspect
that
a
software
problem
is
causing
failures
(continuous
or
intermittent),
see
“Software
problems”
on
page
48.
Damaged
data
in
CMOS
memory
or
damaged
BIOS
code
can
cause
undetermined
problems.
To
reset
the
CMOS
data,
use
the
CMOS
jumper
to
clear
the
CMOS
memory
and
override
the
power-on
password;
see
“System-board
switches
and
jumpers”
on
page
13.
If
you
suspect
that
the
BIOS
code
is
damaged,
see
“Recovering
the
BIOS
code”
on
page
65.
Check
the
LEDs
on
all
the
power
supplies
(see
“Power-supply
LEDs”
on
page
53).
If
the
LEDs
indicate
that
the
power
supplies
are
working
correctly,
complete
the
following
steps:
1.
Turn
off
the
server.
2.
Make
sure
that
the
server
is
cabled
correctly.
3.
Remove
or
disconnect
the
following
devices,
one
at
a
time,
until
you
find
the
failure.
Turn
on
the
server
and
reconfigure
it
each
time.
v
Any
external
devices.
v
Surge-suppressor
device
(on
the
server).
v
Modem,
printer,
mouse,
and
non-IBM
devices.
v
Each
adapter.
v
Hard
disk
drives.
v
Memory
modules.
The
minimum
configuration
requirement
is
1
GB
(two
512
MB
DIMM,
in
DIMM
slots
1
and
4).
v
Service
processor
(Remote
Supervisor
Adapter
II
SlimLine).
76
IBM
System
x3650
Type
7979
and
1914:
Problem
Determination
and
Service
Guide
Summary of Contents for System x3650 Type 7979
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