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Presario 1400 Series
Models: XL240, XL241, XL242, XL244, XL245, XL246, XL247, XL250, XL340,
XL341, XL342, XL343, XL344, XL345, XL346, XL350, XL352, XL355, and XL356
Battery and Power Management
This chapter describes power management and proper battery operating practices for Presario 1400
Series Notebooks. These practices include conservation of AC power and effective control of energy
to extend the operating life of the battery. The following Power Mode sections also outline the
correct methods of starting and shutting down the Notebook in various situations.
Power Modes
Presario 1400 Series Notebooks have three levels of low power: Hibernation, Standby, and Full Off.
Hibernation
Hibernation mode helps conserve battery life and protect data. The Notebook automatically enters
Hibernation when the battery has little power left, or when the Notebook (operating on battery
power) is in Standby mode for more than one hour. As the Notebook enters Hibernation, it
automatically stores the contents of its memory to the hard drive before shutdown. When the
Notebook wakes from Hibernation, it returns to its former state.
Note: When the Notebook enters or wakes from Hibernation mode, a Progress window is
displayed.
To activate Hibernation mode, press the Power
To resume from Hibernation mode, press the Power
Standby
Standby is a low-power mode, also referred to as Sleep mode. The Notebook maintains system
information and open files while in Standby mode. Selecting Standby instead of turning off the
Notebook when your have finished working has two advantages: 1. It allows the Notebook to wake
up faster than it would if it had been turned off; 2. It saves more power than the Active-On mode.
CAUTION: Unsaved information is lost if the Notebook is turned off prior to
system wake-up, or if a power loss occurs while using the AC adapter.
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To activate Standby/Sleep mode, press Fn+F4 or click Start. Select the Shut Down option, and
then Standby.
To resume from Stand/Sleep mode, press any key.
Ÿ button once.
Ÿ button once.
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Page 3
Presario 1400 Series
Models: XL240, XL241, XL242, XL244, XL245, XL246, XL247, XL250, XL340,
XL341, XL342, XL343, XL344, XL345, XL346, XL350, XL352, XL355, and XL356
Full Off
Full Off mode consumes no power. The battery charges continuously if the battery is installed while
the Notebook is in Full Off mode and if the Notebook remains plugged into external AC power.
Note: Unsaved information is lost if the Notebook is turned off without first saving the
data.
To activate Full Off mode, complete the following steps:
1. Click the Start button on the Windows taskbar.
2. Click Shut Down, then select Shut Down from the options.
To r es um e f r o m Full Off mode, press the Power button once.
CAUTION: The Notebook must be turned off (Full Off mode) when installing or
replacing components. Follow the instructions for putting the Notebook into
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Full Off mode. Be sure to unplug the Notebook from the outlet, and remove the
battery pack (refer to the removal procedures section: Battery Pack) before
servicing any parts.
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Page 4
Presario 1400 Series
Models: XL240, XL241, XL242, XL244, XL245, XL246, XL247, XL250, XL340,
XL341, XL342, XL343, XL344, XL345, XL346, XL350, XL352, XL355, and XL356
Summary of Power Modes
The following table outlines the procedures for entering and exiting the various power modes, and
the external indicators for each mode.
Standby Mode Hibernation Mode Off Mode
Automatic
Activation
15 minutes if using
battery power* (preset
default)
When battery is low or
after 1 hour of
Standby*
Standard Shutdown*:
click Start on the
Windows taskbar, click
Shut Down, and then
Shut Down from menu
options.
Manual
Activation
Press Fn+F4 key
combination or click
Start on the Windows
taskbar, Shut Down, and
then Standby.
Press the Power Ÿ
button once.
Manual Shutdown**:
Press and hold down the
Power
Ÿ button for
four seconds.
OR
Fn+Power (press and
hold the Fn key then
press the Power
button).
Resume/
Exit
Indicators
* T
The Notebook will not automatically enter Standby or Hibernation mode if using AC power.
Important: The Manual Shutdown procedure is not recommended unless the Standard Shutdown is
**
uuuunsuccessful.
Press any key. Press the Power
button once.
Power light flashes and
Moon
é
icon appears on
status display.
Power light is off,
screen is blank, and
Power
Ÿ icon does not
appear on status
display.
Ÿ
Press the Power Ÿ
button once.
Power light is off,
screen is blank, and
Power
Ÿ icon does not
appear on status
display.
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Presario 1400 Series
Models: XL240, XL241, XL242, XL244, XL245, XL246, XL247, XL250, XL340,
XL341, XL342, XL343, XL344, XL345, XL346, XL350, XL352, XL355, and XL356
Power Settings
Power management modes can be initiated based on the amount of time passed since the last
system activity. System activity includes keyboard strokes, mouse movement, CD/DVD playback,
and modem usage.
Power Schemes
Different patterns of Notebook use determine the level of power management needed. The Power
management settings can be selected using several predefined Power Schemes. To access these
options, select Power Management on the Control Panel, then click the Power Schemes tab. The
default Power Schemes are Home/Office Desk, Portable/Laptop, and Always On. Power Schemes can
also be customized by changing the following options:
•
System Standby: the length of inactivity before the Notebook goes into Standby mode
•
Turn Off Monitor: the length of inactivity before the screen times out and goes blank
•
Turn Off Hard Disks: the length of inactivity before the hard drive goes into low-power
mode
Important: The setting for the Hard Disk must be less than or equal to the setting for
the System. If the Notebook is on a network, Compaq recommends that System
Standby be set to Never.
The following table shows the default settings for each Power Scheme.
Power Scheme AC Power Battery Power
Always On
System Standby
Tur n OF F Mo n ito r
Turn OFF Hard Disks
Hibernate
Never
20 minutes
Never
Never
Never
15 minutes
30 minutes
Never
Portable/Laptop
System Standby
Tur n OF F Mo n ito r
Turn OFF Hard Disks
Hibernate
Never
3 hours
15 minutes
Never
15 minutes
Never
10 minutes
1 hour
Home/Office Desk
System Standby
Turn OFF Monitor
Turn OFF Hard Disks
Hibernate
Never
20 minutes
Never
Never
5 minutes
5 minutes
10 minutes
20 minutes
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Presario 1400 Series
Models: XL240, XL241, XL242, XL244, XL245, XL246, XL247, XL250, XL340,
XL341, XL342, XL343, XL344, XL345, XL346, XL350, XL352, XL355, and XL356
Alarms
The Notebook can be set to Alarm when the battery power level is reduced or when it reaches a
critically low level. The Notebook can also be set to enter a low-power mode when the battery
reaches a specific power level.
CAUTION: The settings on the Alarms tab are preset for the Notebook to run at
optimum efficiency. Changing any of these settings may cause the Notebook to
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function improperly. It is recommended that these settings be left at their default
values.
Default Alarm Settings
Setting Low Battery Critical Battery
Alarm power level 10% 0%
Notification Sound No Action
Power Mode No Action Hibernation
Active Enabled Enabled
Rebooting After a Lockup
To reboot the Notebook when the keyboard is frozen, or when the screen is locked, press and hold
down the Power
Notebook with a single press of the Power
If the Notebook still does not recover, shut it down by pressing the Power
down for four seconds. Then remove the battery and unplug the AC power for at least 30 seconds.
Reinsert the battery or reconnect AC power, and press the Power
Ÿ button for at least four seconds to perform a Manual Shutdown. Then restart the
Ÿ button.
Ÿ button and holding it
Ÿ button once to reboot.
Recovering From a Loss of Electrical Power
Loss of electrical power causes the Notebook to turn off automatically. This may cause loss of data
because the Microsoft Windows operating system is not able to close all the files and programs
properly.
Loss of power may be caused by one of the following:
•
Interruption of electrical power service
•
Accidental disconnection of the power cord
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Presario 1400 Series
Models: XL240, XL241, XL242, XL244, XL245, XL246, XL247, XL250, XL340,
XL341, XL342, XL343, XL344, XL345, XL346, XL350, XL352, XL355, and XL356
If power surges or sags, the display and status lights may flicker, and the Notebook may
automatically restart. If an improper shutdown occurs, the Microsoft Windows utility program,
ScanDisk, runs automatically once power is restored. ScanDisk determines whether the improper
shutdown has caused any errors on the hard disk. These errors may occur if the Microsoft Windows
operating system is not able to close all files correctly before the shutdown. If no errors are found,
the restart process continues. If ScanDisk does detect errors, follow the instructions on the screen
to continue the restart process. Work or information that was not saved before the loss of power or
shutdown may be lost.
If a power failure occurs, or if the power cord disconnects while the Notebook is turned on, turn it off
until normal service is restored. The next time the Notebook is turned on, ScanDisk may run to
check the hard disk for errors caused by improper shutdown.
Increasing Battery Pack Operating Time
Battery pack operating life is affected by several variables. To avoid unnecessary replacement,
consider the following when determining how long a charged battery pack should last:
•
Power conservation settings
•
Hardware configuration
•
Software applications
•
Installed options
•
Display brightness\\Server\projects\Compaq_Port\Portable TimesheetHard drive usage
Changes in operating temperatures
•
•
Type and number of installed PC cards
Note: Power consumption requirements for PC cards vary widely. Some cards drain the
battery pack very rapidly.
Battery pack operating life can be increased by as much as 50 percent by controlling the energy
required by the Notebook and the energy stored in the battery pack.
Minimizing the Energy Required
To minimize the energy required by the Notebook, follow these guidelines:
•
Set the power conservation levels in the Power Management utility to Maximum.
•
Customize the time-out value to work more efficiently with the applications. The length of
battery life depends on the values selected.
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Presario 1400 Series
Models: XL240, XL241, XL242, XL244, XL245, XL246, XL247, XL250, XL340,
XL341, XL342, XL343, XL344, XL345, XL346, XL350, XL352, XL355, and XL356
Maximizing the Energy Stored
To maximize the energy stored in the battery pack, follow these guidelines:
•
Condition a Battery Pack at least every 30 days to improve overall battery performance.
•
Keep a battery pack in the Notebook when using it with AC power to supply the battery pack
with a constant trickle charge.
•
Store the battery pack in a cool, dry place when not in use.
Conditioning a Battery Pack
CAUTION: To avoid loss of data, make sure that all information is saved before
completely discharging a battery pack.
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To condition a battery pack, complete the following steps:
1. Plug in the AC adapter and allow the battery to charge until the fast charge arrow on the
status display disappears. The battery gauge may read 100% for a period of time before the
arrow disappears.
Note: Do not unplug the AC adapter until the arrow disappears.
2. Unplug the AC adapter and allow the battery to drain until the Notebook enters Hibernation
mode. The Notebook can be used normally during this process.
Note: If the AC adapter is connected while the battery is draining, the process must be
repeated, beginning with Step 1.
The battery is now reconditioned. Plug in the AC adapter and begin using the Notebook.
The table below shows typical battery charging times for each model.
Battery Charge Time
Li-ion Battery Pack Battery Power
Computer On Line 4.75 hours
Computer Off Line 3.00 hours
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Presario 1400 Series
Models: XL240, XL241, XL242, XL244, XL245, XL246, XL247, XL250, XL340,
XL341, XL342, XL343, XL344, XL345, XL346, XL350, XL352, XL355, and XL356
Disposing of a Used Battery Pack
In the interests of safeguarding our environment, Compaq Computer Corporation recommends that
nickel metal hydride (NiMH) and lithium-ion (Li-ion) battery packs be recycled. Battery packs should
be handled in accordance with country, state, province, or local regulations.
WARNING: Battery pack contains harmful components when exposed. Do not
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open, crush, puncture, or incinerate the battery pack. It contains no
field-serviceable parts. Dispose of battery packs properly. Failure to dispose
of battery packs properly may cause harm to humans, animals, and
the environment.
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