Power management, Screen blank mode, Sleep (standby) mode – Lenovo 3000 N500 User Manual
Page 42: Power, Management, Screen, Blank, Mode, Sleep, Standby)
Power
management
Note:
Power
management
modes
are
not
supported
for
APM
operating
system.
To
reduce
power
consumption,
the
computer
has
three
power
management
modes:
screen
blank,
sleep
(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
Lenovo
Care
button
and
use
the
ThinkVantage
®
Productivity
Center.
To
end
screen
blank
mode
and
resume
normal
operation,
press
any
key.
Sleep
(standby)
mode
When
the
computer
enters
sleep
(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
sleep
(standby)
mode,
press
Fn+F4.
In
certain
circumstances,
the
computer
goes
into
sleep
(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
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.)
To
cause
the
computer
to
return
from
sleep
(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
the
following
event,
the
computer
automatically
returns
from
sleep
(standby)
mode
and
resumes
operation:
v
The
time
set
on
the
resume
timer
elapses.
Note:
The
computer
does
not
accept
any
input
immediately
after
it
enters
sleep
(standby)
mode.
Wait
a
few
seconds
before
taking
any
action
to
reenter
operation
mode.
34
Lenovo
3000
N500
Hardware
Maintenance
Manual