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Suspend/standby modes, Optimizing battery operation, Cover-closed suspend mode – Texas Instruments 4000M User Manual

Page 96

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Mode

Activate

By

Resume

By

Foreground/

Background

Tasks

Active?

Service

Interrupts

Backlight

On

HDD/FDD

Accesses

Drives

Power

Used

(watts)

Battery Capacity

28.8

watt-hour

Suspend/Standby Modes

The computer has three suspend/standby modes you can
select as needed. The three modes, listed in order of
power-saving capabilities, are the cover-closed suspend
mode, the manual standby mode, and the auto-suspend
mode. All three modes are effective in the two Windows
operating modes, including the 386-enhanced mode.

The modes differ in the manner they are enabled and
disabled:

Task execution

Task interrupt servicing

LCD

Hard disk and floppy drive accessing

Caution: Using the suspend/standby modes for too long
can discharge the battery to the point that it can no
longer power both the

LCD

and the hard disk. If this oc-

curs, your computer will not come out of standby mode
and you must either recharge your battery or plug in
AC power.

Cover-Closed Suspend Mode

This mode, which you can invoke simply by closing the
cover, saves the most battery power. In this mode (if
enabled in the Setup Program), the computer suspends all
tasks, does not service interrupts, and disables the

LCD

,

Optimizing Battery Operation

Power-Saving Utilities 5-3