DELL U7021 ユーザーズマニュアル

Removing and Installing Parts

113

Battery

Replacing the Battery

 

CAUTION: 

Before you begin any of the procedures in this section, follow the safety instructions 

located in the Product Information Guide.

 

NOTICE: 

To prevent static damage to components inside your computer, discharge static electricity 

from your body before you touch any of your computer’s electronic components. You can do so by 
touching an unpainted metal surface on the computer chassis.

A coin-cell battery maintains computer configuration, date, and time information. The battery can 
last several years.
If you have to repeatedly reset time and date information after turning on the computer, replace 
the battery.

 

CAUTION: 

A new battery can explode if it is incorrectly installed. Replace the battery only with the 

same or equivalent type recommended by the manufacturer. Discard used batteries according to the 
manufacturer’s instructions.

To replace the battery:

1 Record all the screens in system setup (see page 119) so that you can restore the correct 

2 Follow the procedures in "Before You Begin" on page 67.
3 Locate the battery socket (see page 75).

 

NOTICE: 

If you pry the battery out of its socket with a blunt object, be careful not to touch the system 

board with the object. Ensure that the object is inserted between the battery and the socket before you 
attempt to pry out the battery. Otherwise, you may damage the system board by prying off the socket or 
by breaking circuit traces on the system board.

4 Remove the battery by carefully prying it out 

of its socket with your fingers or with a blunt, 
nonconducting object such as a plastic 
screwdriver.

5 Insert the new battery into the socket with 

the side labeled "+" facing up, and snap the 
battery into place.

6 Close the computer cover.

battery socket

battery

tab