HP 1277, 1278 manual Power Management for Windows

Page 13

Maintenance & Service Guide

Presario Series

Models: 1246, 1247, 1277, 1278, and 1279

Home Page Notice Preface Product Description Troubleshooting Illustrated Parts Catalog Removal & Replacement Procedures Specifications Pin Assignments Battery Pack Operations

Power Management for Windows 98

The following power management features are available for conserving AC power and extending battery operating time:

●Power Management Settings

●Sleep

●Hibernation

●Battery operating time

●Rebooting After a Lockup

●Servicing Your Computer - Full Off Mode

Pow

er Management Settings

Depending on your patterns of computer use, you can set different levels of power management. These different power management levels can be activated based on the amount of time passed since the last system activity. System activity examples include keyboard or mouse movement, CD playback (while under program control that monitors Sleep), and modem use.

You can select different conditions or power schemes through Power Management.The optional settings are Home/Office Desk, Portable/ Laptop, and Always On. From the default settings, you can change the following settings:

●the System goes to Sleep (Standby) mode

●the screen times out and goes blank

●the hard drive spins down

Each of these system components goes to sleep after the selected or default periods of inactivity. (The setting for hard drive must be less than, or equal to, the setting for System.)

IMPORTANT: If you're on a network, it's recommended that you set System Standby to

Never.

There are five categories of power management settings under the Control Panel. The default setting for each feature is listed below in the tables.

Power Management Properties

Tab: Power Schemes:

Plugged in

Running on Batteries

 

 

 

Always on System Standby:

Never

15 minutes

 

 

 

Turn OFF Monitor

After 3 hours

Never

 

 

 

Always on System Standby:

After 15 minutes

After 10 minutes

 

 

 

Power Management Properties

Tab: Alarms:

Low Battery Alarm:

10%

 

 

 

 

Critical Battery Alarm:

0%

 

 

 

 

 

Alarm Actions:

X Display Message Notification

 

Text Action

No Action

 

 

 

Power Management Properties

Tab: Power Meter: Tab: Advanced:

Default

Default

Display Properties

Tab: Monitor: Laptop Display (Maximum resolution according to unit display size)

Sleep

You can select Sleep mode instead of turning off the computer when you have finished using it. This allows the computer to wake up faster than turning it completely off and saves power over the active (On) mode.

Compaq Presario Series Notebook computers have two levels of sleep-- Hibernation and Sleep.

Hibernation - by pushing the power button once, your computer performs a save to disk followed by a shut down of the computer into Off mode.

Sleep - is a low power mode, also referred to as Standby mode. While in Sleep mode, your computer maintains system information and open files. Unsaved information is lost if you turn off your system prior to system wake-up, or if you lose power while using the AC adapter.

CAUTION: While in Sleep mode, your computer maintains system information and open files. Unsaved information is lost if you turn off your system prior to system wake-up, or if you lose power while using the AC adapter.

Hibernation Mode

Hibernation helps conserve battery life and protects your data. Hibernation can be a routine power-saving event, or can be the result of a low-battery condition. As it enters Hibernation your computer displays a progress screen, as it automatically saves the machine state before it shuts down and turns itself off. Your computer automatically goes into Hibernation when the battery has little power left, or when the system (operating on battery power) has been in Sleep mode for more than an hour. You can also manually initiate Hibernation by pressing the power button once while the system is active. To restore the computer's previous state, simply press the power button once again. While waking up, the computer displays a progress screen.

The following table shows the conditions and indicators for getting in and out of the various power management modes - Sleep, Hibernation, and Off.

Mode

 

To Initiate

 

To End

 

Indicators

Sleep

 

Manual keys combination-

 

Press any

 

Flashing green Power

 

 

Fn+F4

 

key

 

LED

 

 

Time Out Default 15 minutes. If

 

 

 

 

 

 

on Battery power (system will

 

 

 

 

 

 

not go to Sleep if on AC power)

 

 

 

 

Hibernate

 

Manual - Press Power button

 

Press Power

 

No Power LED, blank

 

 

once

 

button once

 

screen

Time Out Default If low battery or after 1 hour of sleep (system will not Hibernate if on AC power)

Off

Perform normal Windows

Press Power

No Power LED, blank

 

shutdown via the start button, or button once

screen

 

press and hold down the power

 

 

 

button for 4 seconds

 

 

Servicing Your Computer - Full Off Mode

If you need to install or replace components in your system, you must turn the computer off completely. Follow the instructions above for properly placing the computer into Off mode. Then, unplug the computer from the

AC outlet and remove the battery (see battery section for instruction for removing the battery pack).

Rebooting After a Lockup

Occasionally you may encounter a frozen keyboard or a locked screen. To reboot your computer (as if from

a cold start) 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 doesn't recover, do the following:

1.Press the Power Button and hold it for four seconds to shut it down.

2.Remove the battery or unplug the AC power for at least 30 seconds.

3.Reinsert the battery or reconnect AC power.

4.Press the Power Button once to reboot.

Battery Operating Time

Battery operating time is affected by variables, such as the following:

●Power conservation settings

●Hardware configuration

●Software applications

●Installed options

●Display brightness

●Hard drive usage

●Power button

●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 the Battery Pack Operations.

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Contents Page Compaq Computer Corporation Technician Notes PrefaceCompaq Presario Series Portable Computer is Product DescriptionMAH NiMH Models and FeaturesControls and Lights Front Bezel Lights Front Bezel Buttons Left Side Components Product DescriptionRight Side Components Bottom of Unit Rear Connectors Pow Power Management for WindowsFollow the Preliminary Steps Run the Power-OnSelf-Test Post TroubleshootingRun Computer Checkup Preliminary StepsCover with Touch Pad Clearing the Power-on PasswordRunning Post Power-On Self Test PostComputer Checkup Test Compaq DiagnosticsShipping Preparation Contacting Compaq SupportProcessor Test Error Codes Diagnostic Error CodesBefore Replacing Parts Troubleshooting Without DiagnosticsSolving Minor Problems Maintenance & Service GuideSolving Power Problems Illustrated Parts Catalog System Unit Mass Storage DevicesDescription Spare Part Number BoardsDisplay Assembly Mass Storage Devices Miscellaneous Cable Kit Spare Part Number Miscellaneous Cables KitMiscellaneous Hardware Kit Miscellaneous Hardware Kit Spare Part Number 346853-001Miscellaneous Plastics Kit Miscellaneous Parts Documentation and Software Feature GuideSerial Number Location Removal and Replacement ProceduresElectrostatic Discharge Removal and Replacement ProceduresService Considerations Removal and Replacement ProceduresCables Cables and ConnectorsCAU Back to Cables and Connectors Ribbon cable position for the CD drive Ribbon cable position for the diskette drive Cable position for the speaker assembly Preparing the Computer for Disassembly Removal Sequence Removing the Battery PackRemoving the Battery Pack Removing the Palmrest Cover with Touch Pad Removing the Palmrest Cover with Touch Pad Removing the Keyboard Computer Removing the ProcessorTo replace the processor, complete the following steps Removing the ProcessorRemoving the Heatspreader Removing the 4.3-GB or 4.8- GB Hard Drive Removing the 4.3-GB or 4.8-GB Hard Drive Removing the 4.3-GB or 4.8-GB Hard Drive Removing the CD Drive Removal and Replacement Procedures Return to Removal Replacement Procedures Removing Battery Charger Board Removing the Modem Removing the Modem Removing Display Panel Assembly Display Panel AssemblyRemoving the Display Panel Assembly Close the display panel assembly and push back on Removal and Replacement Procedures Lvds Removing the Upper CPU Cover Removal and Replacement Procedures Memory Module Removing the Speaker AssemblyUpper CPU cover Removing Diskette DriveRemoving Fan Assembly Important the arrow located on Removing the Fan AssemblyElectrostatic Removing the System Board Removal and Replacement Procedures Remove two screws from the system board Removal and Replacement Procedures Return to Removal & Replacement Procedures Removing the Memory Module Removing the Memory Module Physical and Environmental SpecificationsPin Signal Connector Pin AssignmentsIncreasing Battery Pack Operating Time Battery Pack Operations
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