HP Presario 1900 Model XL1-XL165-Maintenance & Service Guide Presario 1900 - Page 32

Before You Begin Removal Sequence Product Description Maintenance & Service Guide Presario 1900 Series Models: XL1, XL160, XL161, XL162, XL163, and XL165 Specifications Troubleshooting Pin Assignments Parts Catalog Battery Operations Index Product Description Models and Features 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. Controls and Lights Status Panel Left Side Components q Power Management Settings q Sleep q Hibernation q Rebooting After a Lockup q Servicing Your Computer - Full Off Mode Right Side Components Power Management Settings Bottom of Unit Left Side and Top Wedge Components Right Side Wedge Components Rear Connectors 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. q When the computer goes into Sleep (Standby) mode q When the screen times out and goes blank q 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. Port Replicator Connectors IMPORTANT: If you are Never . connected to a network, Compaq recommends you set System Standby to Port Replicator Components Sleep Power Management Sleep mode is a low power mode, also referred to as Standby mode. 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 wakeup, 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 Sleep Hibernate To Start Manual - Fn+F4 key combination To End Indicators Press any key or Flashing Power LED move the mouse Time-Out Default 15 minutes. If using battery power, system will not go to Sleep if on AC power Manual - Press Power Press Power Button once 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 Press Power No Power LED, Windows shutdown button once blank screen using the Start button, or press and hold down the Power button for 4 seconds 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.