HP Compaq nx6115 Manuel utilisateur

Power

Document Part Number: 383370-001

May 2005

This guide explains how the notebook uses power.

Power ii

Contents

Power

Power Control and Light Locations . . . . . . . . . . . . . . . . . . . 1

Power Sources . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Standby and Hibernation . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Standby . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Hibernation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Initiating Standby, Hibernation or Shutdown . . . . . . . . 7

Default Power Settings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Turning the Notebook or Display On or Off . . . . . . . . 10

Initiating or Resuming from Standby . . . . . . . . . . . . . 11

Initiating or Restoring from Hibernation. . . . . . . . . . . 12

Using Emergency Shutdown Procedures . . . . . . . . . . 14

Power Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Accessing Power Options Properties. . . . . . . . . . . . . . 15

Displaying the Power Meter Icon . . . . . . . . . . . . . . . . 16

Setting or Changing a Power Scheme . . . . . . . . . . . . . 17

Using a Security Password . . . . . . . . . . . . . . . . . . . . . 17

Processor Performance Controls (Select Models Only). . . 18

Battery Packs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Identifying Battery Packs . . . . . . . . . . . . . . . . . . . . . . 21

Inserting or Removing a Primary Battery Pack. . . . . . 22

Charging Battery Packs . . . . . . . . . . . . . . . . . . . . . . . . 24

Charging a New Battery Pack . . . . . . . . . . . . . . . . . . . 25

Charging an In-Use Battery Pack . . . . . . . . . . . . . . . . 25

Monitoring the Charge of a Battery Pack . . . . . . . . . . . . . 26

Obtaining Accurate Charge Information . . . . . . . . . . . 26

Displaying Charge Information on the Screen . . . . . . 26

iii Power

Managing Low-Battery Conditions . . . . . . . . . . . . . . . . . . 28

Identifying Low-Battery Conditions . . . . . . . . . . . . . . 28

Resolving Low-Battery Conditions . . . . . . . . . . . . . . . 29

Calibrating a Battery Pack . . . . . . . . . . . . . . . . . . . . . . . . . 31

When to Calibrate . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

How to Calibrate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

Conserving Battery Power . . . . . . . . . . . . . . . . . . . . . . . . . 35

Conserving Power As You Work . . . . . . . . . . . . . . . . 35

Selecting Power Conservation Settings. . . . . . . . . . . . 36

Storing a Battery Pack . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

Disposing of a Used Battery Pack . . . . . . . . . . . . . . . . . . . 38

Index

Power 1

Power

Power Control and Light Locations

The following illustration and table identify and describe the

power control and light locations.

✎Your notebook may look slightly different from the

illustrations in this section.

2Power

Component Description

1Display switch Puts the notebook in standby if the

display is closed while the notebook

is on.

2Power/standby lights* (2) Green: The notebook is on.

Blinking green: The notebook is in

standby mode.

Off: The notebook is off or in

hibernation.

(Continued)

Power 3

3Power/standby button When the notebook is

■Off, press the button to turn on the

notebook.

■In standby, briefly press the button

to exit standby.

■In hibernation, briefly press the

button to exit hibernation.

If the notebook has stopped

responding and Microsoft® Windows®

shutdown procedures cannot be used,

press the power/standby button and

hold for at least 5 seconds to turn off

the notebook.

4fn+f3 Initiates standby.

5Battery light Amber: A battery pack is charging.

Green: A battery pack is close to full

charge capacity.

Blinking amber: A battery pack 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 more quickly.

Off: If the notebook is connected to an

external power source, the light is

turned off when all batteries in the

notebook are fully charged. If the

notebook is not connected to an

external power source, the light is

turned off until the battery reaches a

low-battery condition.

*There are 2 power/standby lights. Both display the same information. The

light on the power button is visible only when the notebook is open; the

other power/standby light is always visible on the front of the notebook.

Component Description

4Power

Power Sources

The notebook can run on internal or external AC power. The

following table indicates the best power sources for common

tasks.

Task Recommended Power Source

Work in most software

applications

■Charged battery pack in the notebook

■External power supplied through one of

the following devices:

❐AC adapter

❐Optional docking device

(select models only)

❐Optional power adapter

Charge or calibrate a battery

pack in the notebook

External power supplied through

■AC adapter

■Optional docking device

(select models only)

■Optional power adapter

Install or modify system

software or write to a CD

or DVD

External power supplied through

■AC adapter

■Optional docking device

(select models only)

■Optional power adapter

Power 5

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. For more information, refer to “Initiating Standby,

Hibernation or Shutdown.”

Standby

ÄCAUTION: To avoid a complete battery discharge, do not leave your

notebook in standby for extended periods. Connect the notebook to an

external power source.

Standby reduces power to system components that are not in use.

When standby is initiated, your work is saved in random access

memory (RAM) and the screen is cleared. When you resume

from standby, your work returns to the screen where you left off.

■Saving your work before initiating standby is not usually

necessary, but it is a recommended precaution.

■When the notebook is in standby, the power/standby lights

blink.

6Power

Hibernation

ÄCAUTION: If the configuration of the notebook is changed during

hibernation, resuming from hibernation may not be possible. When the

notebook is in hibernation:

■Do not dock the notebook in or undock the notebook from a

docking device.

■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 a Digital Media Slot card, a PC Card, or

an ExpressCard (select models only).

Hibernation saves your work to a hibernation file on the hard

drive, and then shuts down the notebook. 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.

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. Make

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.

Power 7

Initiating Standby, Hibernation or Shutdown

The following sections explain when to initiate standby or

hibernation and when to shut down your notebook.

✎You cannot initiate any type of networking communications or

perform any computer functions while the notebook is in

standby or hibernation.

When You Leave Your Work

Initiating standby clears the screen. When the notebook 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 clears the screen and saves your work to the

hard drive. When the notebook is in hibernation, it uses much less

power than when it is in standby.

Shutting down the notebook and removing the battery pack is

recommended to extend the life of the battery pack when the

notebook will be unused and disconnected from external power

for an extended period. For details on battery pack storage, refer

to “Storing a Battery Pack.”

When a Reliable Power Supply Is Unavailable

Make sure that hibernation remains enabled, especially if you are

operating the notebook 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

notebook.

It is recommended that if you pause your work when the power

supply is uncertain, you do one of the following:

■Initiate hibernation.

■Shut down the notebook.

■Save your work, and then initiate standby.

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