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United States January 2, 2003
Presario 1600 Series
Models: 1600T, 1600-XL140, 1600-XL141, 1600-XL142, 1600-XL143,
1600-XL144, 1600-XL145, 1600-XL146, 1600-XL147, and 1600-XL150
Before You Begin Product Description Parts Catalog
Specifications Battery Operations Pin Assignments
Removal Sequence Troubleshooting MSG Index
Models and
Features
Controls and
Lights
Internet
Zone
Buttons and
Lights
Front Bezel
Components
Left Side
Components
Right Side
Components
Bottom of
Unit
Rear
Connectors
QuikDock
Components
QuikDock
Connectors
Power
Management
for Windows
98
Products Description
Power Management for Windows 98
The following power management features are available for
conserving AC power and extending battery operating time:
● Power Management Settings
● Low-Power Modes
● Battery Operating Life
● Servicing the Computer (Full Off Mode)
● Rebooting After a Lockup
● Recovering From a Loss of Electrical Power
Power Management Settings
Differing patterns of computer use determine the level of power
management needed. These power management levels can be
initiated based on the amount of time passed since the last
system activity. System activity examples include keyboard
strokes or mouse movement, DVD/CD playback (while under
program control that monitors Standby), and modem use.
Power Schemes
You may select different settings or Power Schemes through
Power Management from the Control Panel. The default Power
Schemes are Home/Office Desk, Portable/Laptop, and
Always On. You can customize these settings by changing the
following options:
● System Standby: length of inactivity before the computer
goes into Standby mode
● Turn Off Monitor: length of inactivity before the screen
times out and goes blank
● Turn Off Hard Disks: length of inactivity before the hard
drive goes into low power mode
IMPORTANT:
● The setting for the Hard Drive
must be less than or equal to the
setting for the System.
● If the computer is on a network,
Compaq recommends System
Standby be set to Never.
The following table shows the default settings for the each Power
Scheme.
Power Schemes
Always on AC Power Battery Power
System Standby
Turn OFF Monitor
Turn OFF Hard Disks
Never
15 minutes
1 hour
5 minutes
2 minutes
3 minutes
Portable/Laptop AC Power Battery Power
System Standby
Turn OFF Monitor
Turn OFF Hard Disks
Never
3 hours
15 minutes
15 minutes
Never
10 minutes
Home/Office Desk AC Power Battery Power
System Standby
Turn OFF Monitor
Turn OFF Hard Disks
20 minutes
15 minutes
30 minutes
1 minute
2 minutes
10 minutes
Alarms
The computer can be set to alarm when the battery power level
is reduced and/or when it reaches a critical low level. It can also
be set to automatically enter a low-power mode when the
battery reaches a specific power level.
CAUTION: The settings on the Alarms tab have
been preset for the computer to run at its best.
Changing any of these settings could cause
the computer to function improperly. It is
recommended that these settings be left at
their default values.
Alarms
Alarm Default Alarm Action
Low Battery 10% Notification: Text
Power Mode: No Action
Critical Battery 0% Notification: No Action
Power Mode: Hibernation
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Low-Power Modes
Compaq Presario 1600 Series Computers have two levels of low-
power management: Hibernation and Standby .
Hibernation
Hibernation helps conserve battery life and protect the data. The
computer will automatically enter Hibernation mode when the
battery has little power left or when the computer (operating on
battery power) has been in Standby mode for more than one
hour. As the computer enters Hibernation, it automatically stores
the content of the computer memory to the hard drive before it
shuts down. When the computer comes out of hibernation, it
returns to its previous state.
Activate Hibernation mode by pressing the Power button once.
To restart the computer, press the Power button once. When
the computer enters or wakes from Hibernation mode, it displays
a Progress window.
Standby
Standby mode is a low-power mode, also referred to as Sleep
mode. Selecting Standby mode instead of turning off the
computer when finished allows the computer to wake up faster
than turning it completely off and saves power over the active
(On) mode.
Activate Sleep mode by pressing Fn+F4. Or, click Start, select
the Shut Down option, and click Standby.
CAUTION: While in Standby mode, the
computer will maintain system information and
open files. Unsaved information will be lost if
the computer is turned off prior to system wake-
up, or if a power loss occurs while using the AC
adapter.
The following table shows the conditions and indicators for
entering and exiting the various power management modes,
Standby, Hibernation, and Off.
Power Management Modes
Standby Activation Deactivation Indicators
Manual Fn+F4 Key
combination
or click the
Start button
on the
Windows
Taskbar,
then point to
Shutdown
and click
Standby.
Press any
key.
Half-moon
icon
appears on
the Status
Disqplay2.
Time-out
Default
15 minutes if
using battery
power.
Computer
will not
automatically
enter
Standby
mode if
using AC
Power.
* Moon icon appears on status display (1600 Series
only)
Hibernate Activation Deactivation Indicators
Manual Press Power
button once.
Press Power
button once.
Power
light is off,
screen is
blank**
Time-out
Default
When
battery is
low or after
1 hour of
Standby.
Computer
will not
automatically
enter
Hibernation
mode if
using AC
Power.
** Power icon does not appear on status display
(1600 Series only)
OFF Activation Deactivation Indicators
Standard Perform
normal
Windows
shutdown
using the
Start button
on the
Windows
Taskbar.
Press Power
button once.
Power
light is off,
screen is
blank.
Manual Press and
hold down
the Power
button for 4
seconds.
IMPORTANT:
The manual shutdown mode is not
recommended unless the standard
shutdown mode does not work.
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Battery Operating Life
Battery operating life is affected by variables such as the
following:
● Power conservation settings
● Hardware configuration
● Software applications
● Installed options
● Display brightness
● Hard drive usage
● Changes in operating temperature
● Type and number of installed PC Cards
For more information on increasing battery pack operating time,
conditioning the battery pack, and disposing of a used battery
pack, refer to
Battery Pack Operations.
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Servicing the Computer - Full Off Mode
The computer must be turned off completely when installing or
replacing components in the system. Follow the instructions
above for properly putting the computer into Off mode, unplug
from the outlet, and remove the battery (
see Battery Pack
Removal Sequence).
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Rebooting After a Lockup
To reboot the computer (as if from a cold start), when the
keyboard is frozen or the screen is locked, press and hold down
the Power button for at least four seconds, which will cause a
manual shutdown. Then, restart it with a single press of the
Power button. If it still does not recover, press the Power
button and hold for four seconds to shut it down, then remove
the battery or unplug the AC power for at least 30 seconds.
Reinsert the battery or reconnect AC power and press the
Power button once to reboot.
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Recovering From a Loss of Electrical Power
Loss of electrical power will cause the Internet PC to
automatically turn off. This may cause loss of data because the
Microsoft Windows operating system is not able to properly close
all files and programs.
Loss of power may be caused by one of the following:
● Electrical power service is interrupted.
● The power cord is accidentally disconnected.
If power surges or sags, the display and status lights may
flicker, and the computer may automatically restart. If an
improper shutdown occurs, ScanDisk, a Microsoft Windows utility
program, will automatically run once power is restored. ScanDisk
will determine if the improper shutdown caused any errors on
the hard disk. These errors may occur if the Microsoft Windows
operating system was not able to properly close all files before
the shutdown. If no errors are found, the restart process will
continue. If ScanDisk does detect errors, follow the instructions
shown to continue the restart process. Work that was not saved
prior to the lockup may be lost.
Use of a surge suppressor, line conditioner, or uninterruptible
power supply (UPS) may protect the computer from damage
caused by power surges or sags.
If a power failure occurs or the power cord disconnects while the
computer is turned on, turn off the computer until normal
service has been restored. ScanDisk may run to check the hard
disk for errors caused by the improper shutdown the next time
the computer turns on.
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