Ensuring Sufficient Power For Your Computer - Dell PP21L Owner's Manual

H A R G E T H E B A T T E R Y
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1 Reinstall the battery.
2 Use the AC adapter to connect the computer to an electrical outlet.
3 Turn on the computer.
NOTE:
Battery operating time (the time the battery can hold a charge) decreases over time. Depending on how
often the battery is used and the conditions under which it is used, you may need to purchase a new battery during
the life of your computer.
C H E C K T H E B A T T E R Y S T A T U S L I G H T
battery charge is low or depleted. Connect the computer to an electrical outlet.
If the battery status light flashes green and orange, the battery is too hot to charge. Shut down the
computer, disconnect the computer from the electrical outlet, and then let the battery and computer
cool to room temperature.
If the battery status light rapidly flashes orange, the battery may be defective. See "Contacting Dell" on
page 112.
C H E C K T H E B A T T E R Y T E M P E R A T U R E
not start up.
E S T T H E E L E C T R I C A L O U T L E T
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device, such as a lamp.
C H E C K T H E A C A D A P T E R
ensure that the light is on.
O N N E C T T H E C O M P U T E R D I R E C T L Y T O A N E L E C T R I C A L O U T L E T
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strips, and the extension cable to verify that the computer turns on.
E L I M I N A T E P O S S I B L E I N T E R F E R E N C E
appliances.
A D J U S T T H E P O W E R P R O P E R T I E S
R E S E A T T H E M E M O R Y M O D U L E S
reinstall the memory modules. See "Memory" on page 88.

Ensuring Sufficient Power for Your Computer

Your computer is designed to use the 90-W AC adapter; for optimum system performance, you should
always use this adapter.
The 65-W AC adapters used in other Dell™ portable computers can be used with your computer, but they
will decrease system performance. Using less-powerful AC adapters, including the 65-W AC adapter, will
cause you to receive a
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Solving Problems
The battery charge may be depleted.
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If the battery status light flashes orange or is a steady orange the
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If the battery temperature is below 0° C (32° F), the computer will
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Ensure that the electrical outlet is working by testing it with another
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Check the AC adapter cable connections. If the AC adapter has a light,
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Turn off nearby fans, fluorescent lights, halogen lamps, or other
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See "Power Management Modes" on page 33.
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If the computer power light turns on but the display remains blank,
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message.
WARNING
Bypass power protection devices, power
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