System-board
LEDs
The
following
illustration
shows
the
light-emitting
diodes
(LEDs)
on
the
system
board.
1
2
3
4
5
6
7
8
9
10
11
12
DIMM LEDs
Slot 1
error LED
Slot 2
error LED
Slot 3
error LED
Slot 4
error LED
Slot 5
error LED
Slot 6
error LED
Microprocessor
mismatch
LED
DIMM
error LEDs
1 through 12
Microprocessor 1
error LED
Microprocessor 2
error LED
VRM error
LED
BMC heartbeat
LED
ServeRAID
error LED
Battery LED
For
more
information
about
the
system-board
LEDs,
see
the
Problem
Determination
and
Service
Guide
on
the
IBM
System
x3400
Documentation
CD.
Installation
guidelines
Before
you
install
options,
read
the
following
information:
v
Read
the
safety
information
that
begins
on
page
v,
the
guidelines
in
“Working
inside
the
server
with
the
power
on”
on
page
23,
and
“Handling
static-sensitive
devices”
on
page
24.
This
information
will
help
you
work
safely.
v
Before
you
install
optional
hardware,
make
sure
that
the
server
is
working
correctly.
Start
the
server,
and
make
sure
that
the
operating
system
starts,
if
an
operating
system
is
installed,
or
that
a
19990305
error
code
is
displayed,
indicating
that
an
operating
system
was
not
found
but
the
server
is
otherwise
working
correctly.
If
the
server
is
not
working
correctly,
see
the
Problem
Determination
and
Service
Guide
for
diagnostic
information.
v
Observe
good
housekeeping
in
the
area
where
you
are
working.
Place
removed
covers
and
other
parts
in
a
safe
place.
v
If
you
must
start
the
server
while
the
cover
is
removed,
make
sure
that
no
one
is
near
the
server
and
that
no
tools
or
other
objects
have
been
left
inside
the
server.
v
Do
not
attempt
to
lift
an
object
that
you
think
is
too
heavy
for
you.
If
you
have
to
lift
a
heavy
object,
observe
the
following
precautions:
22
System
x3400
Types
7973,
7974,
7975,
and
7976:
User’s
Guide
Summary of Contents for System x3400 Type 7975
Page 1: ...System x3400 Types 7973 7974 7975 and 7976 User s Guide...
Page 2: ......
Page 3: ...System x3400 Types 7973 7974 7975 and 7976 User s Guide...
Page 88: ...74 System x3400 Types 7973 7974 7975 and 7976 User s Guide...
Page 126: ...112 System x3400 Types 7973 7974 7975 and 7976 User s Guide...
Page 133: ......
Page 134: ...Part Number 44W2584 Printed in USA 1P P N 44W2584...
