IBM x3400 Installation Guide - Page 52

Power-on, Power-control, button, drive, activity - manual

Page 52 highlights

The following illustration shows the controls, LEDs, and connectors on the front of the simple-swap server models. System power LED Power-control button Hard disk drive activity LED System error LED Front information panel CD or DVD drive activity LED (green) USB connectors CD or DVD-eject button Power-on LED When this LED is lit, it indicates that the server is turned on. When this LED is off, it indicates that ac power is not present, or the power supply or the LED itself has failed. Note: If this LED is off, it does not mean that there is no electrical power in the server. The LED might be burned out. To remove all electrical power from the server, you must disconnect the power cords from the electrical outlets. Power-control button Press this button to turn the server on and off manually. Hard disk drive activity LED When this LED is flashing, it indicates that a hard disk drive is in use. 38 System x3400 Types 7973, 7974, 7975, and 7976: Installation Guide

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The
following
illustration
shows
the
controls,
LEDs,
and
connectors
on
the
front
of
the
simple-swap
server
models.
USB connectors
Power-control button
Front
information
panel
CD or DVD-eject button
CD or DVD drive
activity LED
(green)
System power LED
Hard disk drive activity LED
System error LED
Power-on
LED
When
this
LED
is
lit,
it
indicates
that
the
server
is
turned
on.
When
this
LED
is
off,
it
indicates
that
ac
power
is
not
present,
or
the
power
supply
or
the
LED
itself
has
failed.
Note:
If
this
LED
is
off,
it
does
not
mean
that
there
is
no
electrical
power
in
the
server.
The
LED
might
be
burned
out.
To
remove
all
electrical
power
from
the
server,
you
must
disconnect
the
power
cords
from
the
electrical
outlets.
Power-control
button
Press
this
button
to
turn
the
server
on
and
off
manually.
Hard
disk
drive
activity
LED
When
this
LED
is
flashing,
it
indicates
that
a
hard
disk
drive
is
in
use.
38
System
x3400
Types
7973,
7974,
7975,
and
7976:
Installation
Guide