HP Pavilion DV6-1378 User manual

Power
User Guide

© Copyright 2006 Hewlett-Packard
Development Company, L.P.
Microsoft and Windows are U.S. registered
trademarks of Microsoft Corporation.
Bluetooth is a trademark owned by its
proprietor and used by Hewlett-Packard
Company under license.
The information contained herein is subject
to change without notice. The only
warranties for HP products and services are
set forth in the express warranty statements
accompanying such products and services.
Nothing herein should be construed as
constituting an additional warranty. HP shall
not be liable for technical or editorial errors
or omissions contained herein.
First Edition: July 2006
Document Part Number: 416616-001

Table of contents
1 Power control and light locations
2 Power sources
Connecting the AC adapter .................................................................................................................. 4
3 Standby and hibernation
Standby ................................................................................................................................................ 5
Hibernation ........................................................................................................................................... 6
Initiating standby, hibernation or shutdown .......................................................................................... 7
When you leave your work .................................................................................................. 7
When a reliable power supply is unavailable ....................................................................... 7
When using wireless communication, or readable or writable media .................................. 8
4 Power settings
Turning the computer or display on or off ............................................................................................. 9
Using emergency shutdown procedures ............................................................................................ 10
Initiating or resuming from standby .................................................................................................... 11
Initiating or restoring from hibernation ................................................................................................ 12
5 Power options
Accessing Power Options Properties ................................................................................................. 13
Displaying the Power Meter icon ........................................................................................................ 14
Setting or changing a power scheme ................................................................................................. 15
Setting a security prompt .................................................................................................................... 15
6 Processor performance controls
7 Batteries
Inserting or removing a battery .......................................................................................................... 20
Charging a battery pack ..................................................................................................................... 21
Monitoring the charge of the battery pack ......................................................................... 21
Obtaining accurate charge information ............................................................. 21
Displaying charge information on the screen .................................................... 21
Viewing charge displays ................................................................... 22
Interpreting charge indicators ........................................................... 22
Managing low-battery conditions ........................................................................................................ 23
Identifying low-battery conditions ....................................................................................... 23
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Low-battery condition ........................................................................................ 23
Critical low-battery condition ............................................................................. 23
Resolving low-battery conditions ....................................................................................... 24
When external power is available ..................................................................... 24
When a charged battery pack is available ........................................................ 24
When no power source is available .................................................................. 24
When the computer cannot restore from hibernation ........................................ 24
Calibrating a battery pack ................................................................................................................... 25
When to calibrate ............................................................................................................... 25
How to calibrate ................................................................................................................. 25
Step 1: Charging the battery pack ..................................................................... 25
Step 2: Discharging the battery pack ................................................................ 26
Step 3: Recharging the battery pack ................................................................. 27
Conserving battery power .................................................................................................................. 28
Conserving power as you work .......................................................................................... 28
Selecting power conservation settings .............................................................................. 28
Storing a battery pack ........................................................................................................................ 29
Disposing of a used battery pack ....................................................................................................... 29
Index ................................................................................................................................................................... 31
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1 Power control and light locations
The following illustration and table identify and describe the power control and light locations.
NOTE Your computer may look slightly different from the illustration in this section.
Component Description
(1) Power button When the computer is
●Off, press to turn on the computer.
●On, press to enter hibernation.
●In standby, briefly press to exit standby.
●In hibernation, briefly press to exit hibernation.
If the computer has stopped responding and Microsoft® Windows®
shutdown procedures cannot be used, press and hold the power
button for at least 5 seconds to turn off the computer.
(2) Power lights* (2) On: The computer is on.
Blinking: The computer is in standby.
Off: The computer is off or in hibernation.
(3) fn+f5 Initiates standby.
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Component Description
(4) Battery light Amber: A battery is charging.
Green: A battery is close to full charge capacity.
Blinking amber: A battery that is the only available power source
has reached a low-battery condition. When the battery reaches a
critical low-battery condition, the battery light begins blinking
rapidly.
Off: If the computer is plugged into an external power source, the
light is turned off when all batteries in the computer are fully
charged. If the computer is not plugged into an external power
source, the light stays off until the battery reaches a low-battery
condition.
(5) Internal display switch Turns off the display and initiates standby if the display is closed
while the computer is on.
*The 2 power lights display the same information. The light on the power button is visible only when the computer is open. The
light on the front of the computer is visible whether the computer is open or closed.
2 Chapter 1 Power control and light locations ENWW

2 Power sources
The computer runs on internal or external AC power. The following table indicates the best power
sources for common tasks.
NOTE Use only the provided AC adapter or one approved for use with this computer.
Task Recommended power source
Work in most software programs. ●Charged battery in the computer
●External power supplied through one of the following devices:
●AC adapter included with the computer
●Optional expansion product
●Optional power adapter
Charge or calibrate a battery in the computer. External power supplied through
●AC adapter included with the computer.
●Optional expansion product.
●Optional power adapter.
WARNING! Do not charge the computer battery while you are
onboard aircraft.
Install or modify system software or write to a
CD or DVD.
External power supplied through
●AC adapter included with the computer.
●Optional expansion product.
●Optional power adapter.
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Connecting the AC adapter
WARNING! To reduce the risk of electric shock or damage to the equipment:
Plug the power cord into an AC outlet that is easily accessible at all times.
Disconnect power from the computer by unplugging the power cord from the AC outlet (not by
unplugging the power cord from the computer).
If provided with a 3-pin attachment plug on the power cord, plug the cord into a grounded (earthed)
3-pin outlet. Do not disable the power cord grounding pin, for example, by attaching a 2-pin
adapter. The grounding pin is an important safety feature.
To connect the computer to external AC power:
1. Plug the AC adapter into the power connector (1) on the computer.
2. Plug the power cord into the AC adapter (2).
3. Plug the other end of the power cord into an AC outlet (3).
4 Chapter 2 Power sources ENWW

3 Standby and hibernation
Standby and hibernation are energy-saving features that conserve power and reduce startup time. They
can be initiated by you or by the system.
Standby
CAUTION To avoid a complete battery discharge, do not leave the computer in standby for
extended periods. Connect the computer to an external power source.
Standby reduces power to system components that are not in use. When standby is initiated, your work
is stored in random access memory (RAM), and then the screen is cleared. When the computer is in
standby, the power lights blink. When you resume from standby, your work returns to the screen where
you left off.
CAUTION To reduce the risk of information loss, save your work before initiating standby.
ENWW Standby 5

Hibernation
CAUTION If the configuration of the computer is changed during hibernation, resuming from
hibernation may not be possible. When the computer is in hibernation:
Do not dock the computer to or undock the computer from an optional expansion product.
Do not add or remove memory modules.
Do not insert or remove any hard drives or optical drives.
Do not connect or disconnect external devices.
Do not insert or remove external media cards.
Hibernation saves your work to a hibernation file on the hard drive, and then shuts down the computer.
The power lights are turned off. When you restore from hibernation, your work returns to the screen
where you left off. If a power-on password has been set, the password must be entered to restore from
hibernation.
CAUTION To reduce the risk of information loss, save your work before initiating hibernation.
You can disable hibernation. However, if hibernation is disabled and the system reaches a low-battery
condition, the system will not automatically save your work while power is on or when standby has been
initiated.
Use Power Options in Microsoft® Windows® Control Panel to reenable hibernation:
▲Select Start > Control Panel > Performance and Maintenance > Power Options > Hibernate
tab.
Be sure that the Enable hibernation check box is selected.
To set the time interval after which the system initiates hibernation:
1. Select Start > Control Panel > Performance and Maintenance > Power Options.
2. Click one of the intervals in the System hibernates list.
6 Chapter 3 Standby and hibernation ENWW

Initiating standby, hibernation or shutdown
The following sections explain when to initiate standby or hibernation and when to shut down the
computer.
NOTE You cannot initiate any type of networking communications or perform any computer
functions while the computer is in standby or hibernation.
When you leave your work
When standby is initiated, your work is stored in random access memory (RAM), and then the screen
is cleared. When the computer is in standby, it uses less power than when it is on. Your work returns
instantly to the screen when you resume from standby.
Initiating hibernation saves your work to a hibernation file on the hard drive, and then shuts down the
computer. When the computer is in hibernation, it uses much less power than when it is in standby.
When the computer will be unused and disconnected from external power for an extended period, shut
down the computer and remove the battery pack to extend the life of the battery pack.
When a reliable power supply is unavailable
Be sure that hibernation remains enabled, especially if you are operating the computer on battery power
and do not have access to an external power supply. If the battery pack fails, hibernation saves your
work to a hibernation file and shuts down the computer.
If you pause your work when the power supply is uncertain, you take one of the following actions:
●Save your work, and then initiate standby.
●Initiate hibernation.
●Shut down the computer.
ENWW Initiating standby, hibernation or shutdown 7

When using wireless communication, or readable or writable media
CAUTION To prevent possible audio and video degradation, or loss of audio or video playback
functionality, do not initiate standby or hibernation while reading or writing to a CD, a DVD, or an
external media card. To prevent loss of information, do not initiate standby or hibernation while
writing to a CD, a DVD, or an external media card.
Standby and hibernation interfere with the use of Bluetooth® and WLAN communication, and media.
Note the following guidelines:
●If the computer is in standby or hibernation, you cannot initiate a Bluetotoh or WLAN transmission.
●If standby or hibernation is accidentally initiated during playback of a medium such as a CD, a DVD,
or an external media card
●Your playback may be interrupted.
●You may see the following warning message: "Putting the computer into hibernation or
standby may stop the playback. Do you want to continue?" Click No.
●You may need to restart the media to resume audio and video playback.
8 Chapter 3 Standby and hibernation ENWW

4 Power settings
This section explains standby, hibernation, and shutdown procedures.
Turning the computer or display on or off
Task Procedure Result
Turn on the computer. Press the power button. ●The power lights are turned
on.
●The operating system loads.
Shut down the computer.* 1. Save your work and close all open applications.
2. Shut down the computer through the operating
system by selecting Start > Turn Off Computer
> Turn Off.*
●The power lights are turned
off.
●The operating system shuts
down.
●The computer is turned off.
Turn off the display while the
power is on.
Close the computer. Closing the computer activates the
display switch, which initiates
standby.
*If you have been registered to a network domain, the button you click will be called Shut Down instead of Turn Off Computer.
ENWW Turning the computer or display on or off 9

Using emergency shutdown procedures
CAUTION Emergency shutdown procedures result in the loss of unsaved information.
If the computer is unresponsive and you are unable to use normal Windows shutdown procedures, try
the following emergency procedures in the sequence provided:
●Press ctrl+alt+delete. Then, select Shut Down > Turn Off.
●Press and hold the power button for at least 5 seconds.
●Disconnect the computer from external power and remove the battery pack. For more information
about removing and storing a battery pack, refer to “Batteries”.
10 Chapter 4 Power settings ENWW

Initiating or resuming from standby
Task Procedure Result
Initiate standby. ●With the computer on, press fn+f5.
●Select Start > Turn Off Computer > Stand
by.*
In Windows XP Professional, if Stand by is not
displayed:
a. Click the down arrow.
b. Select Stand by from the list.
c. Click OK.
●The power lights blink.
●The screen clears.
Allow the system to
initiate standby.
No action required.
●If the computer is running on battery power, the
system initiates standby after 10 minutes of
computer inactivity (default setting).
●If the computer is plugged into external power,
the system initiates standby after 25 minutes of
computer inactivity (default setting).
NOTE Power settings and timeouts can be
changed using Power Options in Windows
Control Panel.
●The power lights blink.
●The screen clears.
Resume from user-
initiated or system-
initiated standby.
Press the power button. ●The power lights are turned on.
●Your work returns to the screen.
*If you have been registered to a network domain, the button you click will be called Shut Down instead of Turn Off Computer.
ENWW Initiating or resuming from standby 11

Initiating or restoring from hibernation
Hibernation cannot be initiated unless it is enabled. Hibernation is enabled by default.
To verify that hibernation remains enabled:
▲Select Start > Control Panel > Performance and Maintenance > Power Options > Hibernate
tab.
If hibernation is enabled, the Enable hibernation check box is selected.
Task Procedure Result
Initiate hibernation. ●Press the power button.
– or –
●Select Start > Turn Off Computer.* Then, hold down
the shift key as you select Hibernate.
In Windows XP Professional, if hibernate is not
displayed:
a. Click the down arrow.
b. Select Hibernate from the list.
c. Click OK.
●The power lights are turned off.
●The screen clears.
Allow the system to
initiate hibernation (with
hibernation enabled).
No action required. If the computer is running on battery
power, the system initiates hibernation
●After 30 minutes of computer inactivity.
●When the battery pack reaches a critical low-battery
condition.
NOTE Power settings and timeouts can be
changed using Power Options in Windows Control
Panel.
●The power lights are turned off.
●The screen clears.
Restore from user-
initiated or system-
initiated hibernation.
Press the power button.† ●The power lights are turned on.
●Your work returns to the screen.
*If you have been registered to a network domain, the button you click will be called Shut Down instead of Turn Off Computer.
†If the system initiated hibernation because of a critical low-battery condition, connect external power or insert a charged battery
pack before you press the power button. (The system may not respond if the discharged battery pack is the only power source.)
12 Chapter 4 Power settings ENWW

5 Power options
You can change many of the power settings using Windows Control Panel. For example, you can set
an audio alert to warn you when the battery reaches a low-power condition, or you can change the
factory settings for the power button.
When the computer is on:
●Pressing fn+f5, called the "sleep button" by the operating system, initiates standby.
●The display switch turns off the display and initiates standby. The display switch is activated by
closing the display.
Accessing Power Options Properties
To access Power Options Properties:
●Right-click the Power Meter icon in the notification area, at the far right of the taskbar, and then
click Adjust Power Properties.
– or –
●Select Start > Control Panel > Performance and Maintenance > Power Options.
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Displaying the Power Meter icon
By default, the Power Meter icon appears in the notification area, at the far right of the taskbar. The icon
changes shape to indicate whether the computer is running on battery or external power.
To remove the Power Meter icon from the notification area:
1. Right-click the Power Meter icon in the notification area, and then click Adjust Power
Properties.
2. Click the Advanced tab.
3. Clear the Always show icon on the taskbar check box.
4. Click Apply and then click OK.
To show the Power Meter icon in the notification area:
1. Select Start > Control Panel > Performance and Maintenance > Power Options.
2. Click the Advanced tab.
3. Select the Always show icon on the taskbar check box.
4. Click Apply, and then click OK.
NOTE If you cannot see an icon you have placed in the notification area, at the far right of the
taskbar, click the Show Hidden Icons icon (<or <<) in the notification area.
14 Chapter 5 Power options ENWW

Setting or changing a power scheme
The Power Schemes tab in the Power Options Properties dialog box assigns power levels to system
components. You can assign different schemes, depending on whether the computer is running on
battery or external power.
You can also set a power scheme that initiates standby or turns off the display or hard drive after a time
interval that you specify.
To set a power scheme:
1. Right-click the Power Meter icon in the notification area, and then click Adjust Power
Properties.
2. Click the Power Schemes tab.
3. Select the power scheme you want to modify, and adjust options in the lists on the screen.
4. Click Apply.
Setting a security prompt
You can add a security feature that prompts you for a password when the computer is turned on,
resumes from standby, or restores from hibernation.
To set a password prompt:
1. Right-click the Power Meter icon in the notification area, and then click Adjust Power
Properties.
2. Click the Advanced tab.
3. Select the Prompt for password when computer resumes from standby check box.
4. Click Apply.
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16 Chapter 5 Power options ENWW