Chapter
3.
Server
controls,
connectors,
LEDs,
and
power
This
chapter
describes
the
controls,
connectors,
and
light-emitting
diodes
(LEDs)
and
how
to
turn
the
server
on
and
off.
Front
view
The
following
illustration
shows
the
controls,
LEDs,
and
connectors
on
the
front
of
the
server.
Operator information
panel
DVD drive activity LED
Hard disk drive
activity LED
Hard disk drive
status LED
DVD-eject button
Electrostatic-discharge
connector
Hard
disk
drive
status
LED:
If
a
ServeRAID-8i
adapter
is
installed,
when
this
LED
is
lit
it
indicates
that
the
associated
hard
disk
drive
has
failed.
If
the
LED
flashes
slowly
(one
flash
per
second),
the
drive
is
being
rebuilt.
If
the
LED
flashes
rapidly
(three
flashes
per
second),
the
controller
is
identifying
the
drive.
Hard
disk
drive
activity
LED:
On
some
server
models,
each
hot-swap
hard
disk
drive
has
an
activity
LED.
When
this
LED
is
flashing,
it
indicates
that
the
drive
is
in
use.
Operator
information
panel:
This
panel
contains
controls
and
LEDs.
The
following
illustration
shows
the
controls
and
LEDs
on
the
operator
information
panel.
Power-control button
Power-on LED
USB connector
Hard disk drive activity LED
Information LED
System-error LED
Locator LED
Release latch
The
following
controls,
connectors,
and
LEDs
are
on
the
operator
information
panel:
v
USB
connector:
Connect
a
USB
device
to
this
connector.
v
Power-control
button:
Press
this
button
to
turn
the
server
on
and
off
manually.
A
power-control-button
shield
comes
with
the
server.
v
Information
LED:
When
this
LED
is
lit,
it
indicates
that
an
error
or
warning
message
has
been
written
to
the
system
event
log.
v
Release
latch:
Slide
this
latch
to
the
left
to
access
the
light
path
diagnostics
panel.
©
Copyright
IBM
Corp.
2006
25
Summary of Contents for System x3850
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