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Maintenance & Service Guide
Presario 1900 Series
Models: 1905, 1906, 1910, 1915, 1919, 1920, 1922, and 1925

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


Models and Features

Controls and Lights

Status Panel

Left Side Components

Right Side Components

Bottom of Unit

Left Side and Top Wedge Components

Right Side Wedge Components

Rear Connectors

Port Replicator  Connectors

Port Replicator Components

Power Management

Power Management

Compaq Presario 1900 Series Portable Computers are equipped with Advanced Power Management (APM). This management system allows you to conserve battery power and customize the power saving settings to suit your individual needs.

Power Management Settings

Depending on your patterns of computer use, you can set different conditions, or Power Schemes, under which the computer will go into Sleep mode. The optional settings are Home/Office Desk , Portable/Laptop , and Always On .

From the default settings, you can change the following settings.

  • When the computer goes into Sleep (Standby) mode
  • When the screen times out and goes blank
  • When the hard drive slows down

NOTE:

The setting for the hard drive must be less than or equal to the setting for the computer.

 

IMPORTANT:

If you are connected to a network, Compaq recommends you set System Standby to Never .

 

Sleep

Sleep mode is a low power mode, also referred to as Standby mode.

CAUTION.GIF (182 bytes)

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 mode occurs by pressing the Power button once. Your computer saves the content of your computer memory to the hard drive. This is followed by the computer turning off.

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

Mode To Start To End Indicators
Sleep Manual - Fn+F4
key combination
Press any key or move the mouse Flashing Power LED
Time-Out Default -
15 minutes. If using battery power, system will not go to Sleep if on AC power
Hibernate Manual - Press Power Button once Press Power button once No Power LED, blank 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 shutdown using the Start button, or press and hold down the Power button for 4 seconds Press Power button once No Power LED, blank screen

 

Rebooting After a Lockup

Occasionally you may encounter a non-working keyboard or a locked screen. To restart your computer, press and hold down the Power button for at least four seconds. This will cause a manual shutdown. Press the Power button once to start the computer.

If the computer still does not restart, follow these steps:

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

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

3. Reinsert the battery or reconnect AC power and press the Power button once to restart.

 

Full Off (Main Power Off) Mode

If you need to install or replace components in your computer, you must turn the computer off completely . Follow the instructions above for putting the computer into Standard Off mode. Unplug the computer electrical cord from the outlet and remove the battery if installed.

 

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