Compaq 1655, Presario 1600 Series, 1650 manual Power Management for Windows

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Maintenance & Service Guide

Presario 1600 Series

Models: 1650 and 1655

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

Power 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 (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 will go 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

Never

15 minutes

Standby:

 

 

Turn OFF Monitor

After 15 minutes

After 10 minutes

Always on System

After 15 minutes

After 10 minutes

Standby:

 

 

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:

Default

Tab: ADVANCED

Default

Display Properties

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

 

System Properties

Tab: Device Manager

 

Default:

 

Disk Drives:

X DMA

CD ROM:

X DMA

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 Notebook computers have two levels of sleep, Hibernation and Sleep.

Hibernation - by pushing the power button once your computer will perform 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 will maintain system information and open files. Unsaved information will be 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 will maintain system information and open files. Unsaved information will be 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 will display a progress screen, as it automatically saves the machine state before it shuts down and turns itself off. Your computer will automatically go 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 will display 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

Press any key

Flashing green

 

combination

 

Power LED

 

- Fn+F4

 

 

 

Time Out

 

 

 

Default 15

 

 

 

minutes. If on

 

 

 

Battery power

 

 

 

(system will not

 

 

 

go to Sleep if

 

 

 

on AC power)

 

 

Hibernate

Manual - Press

Press Power

No Power LED,

 

Power Button

Button once

blank screen

 

once

 

 

 

Time Out

 

 

 

Default If low

 

 

 

battery or after

 

 

 

1 hour of sleep

 

 

 

(system will not

 

 

 

Hibernate if on

 

 

 

AC power)

 

 

Off

Perform normal

Press Power

No Power LED,

 

Windows

Button once

blank screen

 

shutdown via

 

 

 

the start

 

 

 

button, or 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 putting the computer into Off mode, unplug from the outlet and remove the battery (see battery section for instruction on removing battery).

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, press the Power Button and hold it 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.

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 Maintenance & Service Guide Maintenance & Service Guide Symbols PrefaceProduct Description Port ReplicatorTroubleshooting Follow the Preliminary Steps Run the Power-OnSelf-Test PostIllustrated Parts Catalog Removal and Replacement Procedures Serial Number LocationSpecifications Connector Pin Assignments Battery Pack Operating Time Models and Features ProcessorHard Drive CD Drive ModemControls and Lights Front of UnitLeft Side Components Right Side Components Bottom of Unit Rear Connectors Port Replicator Pin Port Replicator Connector Port Replicator Rear Connectors Port Replicator Rear ConnectorsPower Management for Windows Removing the Battery Pack Preliminary Steps Run Computer CheckupPower-On Self Test Post Running PostClearing the Power-on Password View System Information Inspect Compaq DiagnosticsComputer Checkup Test Contacting Compaq Support Shipping PreparationDiagnostic Error Codes ProceduresTroubleshooting Without Diagnostics Before Replacing PartsSolving Minor Problems Solving PC Card Problems Solving Power ProblemsSolving Printer Problems Solving Touch Pad/Pointing Device ProblemsSystem Unit Description Spare Part NumberBoards Description Spare Part NumberMiscellaneous Parts Documentation Software Mass Storage Devices Miscellaneous Cables Kit Miscellaneous Cables Kit Spare Part NumberDescription Modem Cables Spare Part NumberMiscellaneous Hardware and Plastics Kit Miscellaneous Hardware and Plastics Kit Spare Part NumberMiscellaneous Parts Description Spare Part Number Quick Restore CD Documentation and SoftwareQuick Reference Guide QuickFind Part Number Suffix MonthElectrostatic Discharge Generating StaticService Considerations Cables and Connectors CablesSelect the desired illustration Plastic PartsZIF Connectors Ribbon cable position for the 5.0-GB or 4.0-GB hard drive Ribbon cable position for the CD drive Ribbon cable position for the diskette drive Back to Cables and Connectors Preparing the Computer for Disassembly Prepare the computer for disassembly Removing the Palmrest Cover with Touch PadReturn to Removal & Replacement Procedures Removing the Keyboard Return to Removal Replacement Procedures Removing the Heatspreader Removing the Modem To replace the modem, reverse the previous procedures Removing the Processor Replace the processor bracket Removing the Status Panel Maintenance & Service Guide Removing the Interface Board with Header Audio BoardNext Step When replacing interface board, ensure both Interface Board Components Removing the 5.0-GB or 4.0-GB Hard Drives Maintenance & Service Guide Bracket, reverse the previous procedures Removing the Battery Charger Board Removing the CD Drive Disconnect the CD drive cable from the system board Removing the Display Panel Assembly Maintenance & Service Guide Important before Removing the Upper CPU Cover Removing the Speaker Assembly Removing the Diskette Drive Maintenance & Service Guide Return to Removal Replacement Procedures Removing the Fan Assembly Removing the Audio Board To replace the audio board, reverse the previous procedures Removing the System Board Remove five standoffs from the system board Remove three screws from the system board Return to Removal & Replacement Procedures Removing the Memory Module Return to Removal Replacement Procedures

1650, 1655, Presario 1600 Series specifications

The Compaq Presario 1600 Series was a range of laptop computers introduced in the late 1990s, catering to users seeking performance and portability at an affordable price. Among the most notable models in this series were the Compaq Presario 1650 and 1655, which offered a combination of usability and innovative features that appealed to both casual users and professionals.

These laptops were characterized by their sleek design and relatively lightweight build, making them practical for users on the go. Weighing approximately 6.5 to 7 pounds, they were still manageable for regular travel. The displays featured a 15-inch diagonal screen with a resolution of 800x600 pixels, a respectable offering for that era, providing clear visuals for productivity tasks and multimedia consumption.

Powering these laptops, users found a choice between Intel Pentium II and III processors, allowing for enhanced performance. With speeds ranging from 300 MHz to 450 MHz, these processors ensured that users could run various applications efficiently, whether for business or entertainment. The Presario 1655 provided options for more advanced graphics with an integrated S3 Savage graphics card, enhancing its capability for 3D applications and casual gaming.

In terms of memory, the 1600 series laptops typically came equipped with 32 MB of RAM, which could be upgraded to accommodate the increasing demands of software and multitasking. Additionally, the units included a hard drive capacity ranging from 4 GB to 12 GB, providing ample storage space for documents, multimedia files, and applications.

Connectivity options were also a significant focus for the Presario 1600 Series. Featuring both Ethernet and modem ports, users could easily connect to networks and the internet. The laptops included USB and parallel ports, catering to a variety of peripheral devices, including printers and external storage solutions.

Another notable aspect of the Compaq Presario 1600 series was its emphasis on multimedia features. The presence of a built-in CD-ROM drive allowed users to access software and media easily, while integrated speakers offered decent audio output for video playback. Some models even came equipped with a 56k modem for dial-up internet access, keeping users connected during an era when internet use was expanding rapidly.

Overall, the Compaq Presario 1600 Series, including the 1650 and 1655 models, represented a significant step in portable computing during the late 1990s. With their combination of performance, portability, and multimedia capabilities, these laptops were well-received and laid the groundwork for future advancements in the laptop industry.
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