System Power; Power Conservation - Dell Latitude LM Service Manual

1-6 Dell Latitude LM Systems Service Manual
S
ystem Power
The power button controls power to the system. The computer receives power
from either the AC adapter connected to an AC power source or from up to two
batteries. If you use the AC adapter, constant power is available to the computer.
If you use one or two batteries, the system has built-in power management fea-
tures that extend battery life by removing power from parts of the computer that
are not being used.

Power Conservation

Attach the AC power adapter to the computer, whenever possible, to conserve
battery power. When the AC adapter is attached, the battery is charged while the
computer uses AC power.
The Power Menu of the Setup program has power conservation features. When
activated, each power conservation feature turns off or slows down one or more
functions while the computer is idle. The power conservation features are as
follows:
•
Standby mode — To activate this feature, select the
option in the Power Menu of the Setup program. To deactivate the feature, move
the cursor or press any key on the built-in or external keyboard.
•
Suspend mode — To activate this feature, press <
SUSPEND TIME-OUT
pend mode is activated, the computer beeps once and the suspend mode indicator in
the status display panel blinks every 4 seconds. To deactivate this feature, press any
key on the built-in keyboard.
NOTE: To conserve power when the computer is not in use, close the dis-
play. If the display is closed and an external monitor is not connected, the
computer beeps one time and goes into suspend mode. If the computer receives a
modem call from an external modem while the display is closed, the computer
answers the call unless it is in suspend-to-disk mode. To resume work, open the
display.
•
Suspend-to-disk mode — To activate this feature, press <
SUSPEND TO DISK TIME-OUT
resume using the computer, press the power button on the built-in keyboard.
•
Dimming the display — To activate this feature, set the
option in the Power Menu of the Setup program. To increase the brightness of the dis-
play, press any key on the built-in keyboard.
•
Turning off the hard-disk drive — To activate this feature, set the
option in the Power Menu of the Setup program. The computer automati-
TIME-OUT
cally turns the hard-disk drive back on the next time the microprocessor accesses the
drive.
option in the Power Menu of the Setup program. When sus-
option in the Power Menu of the Setup program. To
STANDBY TIME-OUT
>< > or set the
FN ESC
>< > or set the
FN A
DIM MODE TIME-OUT
HARD-DISK