Lenovo ThinkPad R50e Hardware Maintenance Manual - Page 41

Power, management

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Related service information 10. Select Yes in the Setup Configuration window. Both user HDP and master HDP will have been removed. Power management To reduce power consumption, the computer has three power management modes: screen blank, standby, and hibernation. Screen blank mode In R50e and R52 series, 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 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. In R51e, press the Access IBM button and user the ThinkVantage Productivity Center to turn off power to the computer display. 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. In R51e, you can also use the ThinkVantage Productivity Center to put the computer in standby mode. 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: General descriptions 35

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10.
Select
Yes
in
the
Setup
Configuration
window.
Both
user
HDP
and
master
HDP
will
have
been
removed.
Power
management
To
reduce
power
consumption,
the
computer
has
three
power
management
modes:
screen
blank,
standby,
and
hibernation.
Screen
blank
mode
In
R50e
and
R52
series
,
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
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.
In
R51e
,
press
the
Access
IBM
button
and
user
the
ThinkVantage
Productivity
Center
to
turn
off
power
to
the
computer
display.
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.
In
R51e
,
you
can
also
use
the
ThinkVantage
Productivity
Center
to
put
the
computer
in
standby
mode.
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:
Related
service
information
General
descriptions
35