IBM 84903bu User Guide - Page 22

Server, controls, power, Front

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Server controls, LEDs, and power This section describes the controls 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. Power-on LED Power-control button Hard disk drive activity LED System-error LED USB connectors CD-eject or DVD-eject button CD or DVD drive activity LED (Optional) Diskette-eject button (Optional) Diskette drive activity 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. System-error LED When this amber LED is lit, it indicates that a system error has occurred. An LED on the system board might also be lit to help isolate the error. Detailed troubleshooting information is in the Problem Determination and Service Guide on the IBM xSeries Documentation CD. USB connectors Connect USB devices to these connectors. 8 xSeries 206m Types 8485 and 8490: User's Guide

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Server
controls,
LEDs,
and
power
This
section
describes
the
controls
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.
CD-eject or
DVD-eject button
CD or DVD drive
activity LED
Hard disk drive
activity LED
Power-on
LED
Power-control
button
System-error
LED
USB connectors
(Optional) Diskette-eject
button
(Optional) Diskette drive
activity 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.
System-error
LED
When
this
amber
LED
is
lit,
it
indicates
that
a
system
error
has
occurred.
An
LED
on
the
system
board
might
also
be
lit
to
help
isolate
the
error.
Detailed
troubleshooting
information
is
in
the
Problem
Determination
and
Service
Guide
on
the
IBM
xSeries
Documentation
CD.
USB
connectors
Connect
USB
devices
to
these
connectors.
8
xSeries
206m
Types
8485
and
8490:
User’s
Guide