Responding To Low Battery Conditions; Minimizing Power Usage; Recharging The Battery Packs; Restoring Missing System Files - Texas Instruments Extensa 450 Series Maintenance Manual

3.3.4

Responding to Low Battery Conditions

The computer generally will notify you when you are reaching a low battery
condition by the following:
Four short beeps per minute (unless battery warning is disabled)
The battery low warning is automatically disabled when the AC Adapter is installed
on the notebook regardless of the charge condition of the battery pack.
If the AC adapter is not plugged in within threeminutes of a detected battery low
condition, the notebook enters Suspend mode. When the notebook enters Suspend
Mode, it issues one beep,saves contents of RAM to disk and powers down the unit.
The Notebook returns to the normal operating mode when the power switch is
activated. Unit then recovers RAM information from the hard drive and restores
unit to previous "On" condition.
3.3.5

Minimizing Power Usage

The following actions can minimize power usage and protect your work during the
critical minutes before you shut the system down or replace on the battery packs
with a fully charged pack:
Press CTRL-STANDBY to shut off the alarm (if its enabled)
Save RAM Disk (if using RAM Disk feature)
Press Standby/ Suspend button to put the computer in Standby/suspend
mode whenever you are not actively using the computer. This will save all your
work and remember the application and file you were previously using when
you return to the On condition.
Power down the system if you do not need the computer
3.3.6

Recharging the Battery Packs

A standalone battery charger option is available to charge notebook battery packs.
The battery packs may also be charged in the notebook as follows:
1.
Install the battery pack in your computer (if not already installed).
2. Connect the AC Adapter as described in Section 2.
3. To fully charge the battery pack, leave it charging in the Notebook for at least
another 90 minutes.
3.3.7

Restoring Missing System Files

When you power up the Notebook, it automatically checks for certain key files that
must be present for normal system operation. If any of these files are accidently
erased as indicated by error message, insert the Windows 95 Startup Diskette and
reboot the system. This will allow you to boot up and troubleshoot your system.
Operating Instructions 3-5