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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
Screen
blank
mode
has
three
variants,
as
follows:
1.
If
you
press
Fn+F3,
or
if
the
time
set
on
the
“LCD
off
timer”
in
IBM
BIOS
Setup
Utility
expires,
v
The
LCD
backlight
turns
off.
v
The
hard
disk
drive
motor
stops.
v
The
speaker
is
muted.
2.
If
you
are
using
the
ACPI
operating
system
and
you
press
Fn+F3,
v
The
LCD
backlight
turns
off.
v
The
hard
disk
drive
motor
stops.
3.
If
the
time
set
on
the
“Turn
off
monitor”
timer
in
the
operating
system
expires,
v
The
LCD
backlight
turns
off.
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.s
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
Related
service
information
32
MT
2373/2374/2375/2376/2378/2379