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IBM T500 User Manual

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Power
 
management
 
To
 
reduce
 
power
 
consumption,
 
the
 
computer
 
has
 
three
 
power
 
management
 
modes:
 
screen
 
blank,
 
standby,
 
and
 
hibernation.
 
Screen
 
blank
 
mode
 
If
 
the
 
time
 
set
 
on
 
the
 
“Turn
 
off
 
monitor”
 
timer
 
in
 
the
 
operating
 
system
 
expires,
 
the
 
LCD
 
backlight
 
turns
 
off.
 
To
 
put
 
the
 
computer
 
into
 
screen
 
blank
 
mode,
 
press
 
the
 
ThinkVantage
®
 
button
 
and
 
use
 
the
 
ThinkVantage
 
Productivity
 
Center.
 
To
 
end
 
screen
 
blank
 
mode
 
and
 
resume
 
normal
 
operation,
 
press
 
any
 
key.
 
Standby
 
mode
 
When
 
the
 
computer
 
enters
 
standby
 
mode,
 
the
 
following
 
events
 
occur
 
in
 
addition
 
to
 
what
 
occurs
 
in
 
screen
 
blank
 
mode:
 
v
   
The
 
LCD
 
is
 
powered
 
off.
 
v
   
The
 
hard
 
disk
 
drive
 
is
 
powered
 
off.
 
v
   
The
 
CPU
 
stops.
To
 
enter
 
standby
 
mode,
 
press
 
Fn+F4.
 
Note:
 
If
 
you
 
are
 
using
 
the
 
ACPI
 
operating
 
system,
 
you
 
can
 
change
 
the
 
action
 
of
 
Fn+F4.
 
In
 
certain
 
circumstances,
 
the
 
computer
 
goes
 
into
 
standby
 
mode
 
automatically:
 
v
   
If
 
a
 
“suspend
 
time”
 
has
 
been
 
set
 
on
 
the
 
timer,
 
and
 
the
 
user
 
does
 
not
 
do
 
any
 
operation
 
with
 
the
 
keyboard,
 
the
 
TrackPoint,
 
the
 
hard
 
disk,
 
the
 
parallel
 
connector,
 
or
 
the
 
diskette
 
drive
 
within
 
that
 
time.
 
v
   
If
 
the
 
battery
 
indicator
 
blinks
 
orange,
 
indicating
 
that
 
the
 
battery
 
power
 
is
 
low.
 
(Alternatively,
 
if
 
Hibernate
 
when
 
battery
 
becomes
 
low
 
has
 
been
 
selected
 
in
 
the
 
“Power
 
Management
 
Properties”
 
window,
 
the
 
computer
 
goes
 
into
 
hibernation
 
mode.)
Note
 
for
 
the
 
APM
 
operating
 
system:
 
Even
 
if
 
you
 
do
 
not
 
set
 
the
 
low-battery
 
alarm,
 
the
 
charge
 
indicator
 
notifies
 
you
 
when
 
the
 
battery
 
is
 
low,
 
and
 
then
 
the
 
computer
 
enters
 
the
 
power-saving
 
mode
 
automatically.
 
This
 
default
 
low-battery
 
behavior
 
is
 
independent
 
of
 
the
 
operating
 
system;
 
so
 
if
 
you
 
have
 
set
 
the
 
low-battery
 
alarm,
 
the
 
computer
 
may
 
not
 
do
 
what
 
you
 
specified.
 
It
 
chooses
 
either
 
your
 
setting
 
or
 
the
 
default
 
setting,
 
whichever
 
is
 
appropriate.
 
If
 
you
 
are
 
using
 
the
 
ACPI
 
operating
 
system,
 
only
 
the
 
low-battery
 
alarm
 
is
 
available.
 
To
 
cause
 
the
 
computer
 
to
 
return
 
from
 
standby
 
mode
 
and
 
resume
 
operation,
 
do
 
one
 
of
 
the
 
following:
 
v
   
Press
 
the
 
Fn
 
key.
 
v
   
Open
 
the
 
LCD
 
cover.
 
v
   
Turn
 
on
 
the
 
power
 
switch.
Also,
 
in
 
either
 
of
 
the
 
following
 
events,
 
the
 
computer
 
automatically
 
returns
 
from
 
standby
 
mode
 
and
 
resumes
 
operation:
 
 
Related
 
service
 
information
 
37