Battery, Power supply, Replacing the battery – Dell Dimension E521 User Manual
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12.
When you restart your computer, enter system setup (see
System Setup
), and select the appropriate Drive option.
See the documentation that came with the drive for instructions on installing any software required for drive operation.
13.
Verify that your computer works correctly by running the Dell Diagnostics (see
Dell Diagnostics
).
Battery
Replacing the Battery
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:
Before you begin any of the procedures in this section, follow the safety instructions 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.
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
System Setup
) so that you can restore the correct settings in
2.
Follow the procedures in
Before You Begin
.
3.
Remove the computer cover (see
).
4.
Locate the battery socket (see
System Board Components
).
5.
Carefully press the battery release lever away from the battery and the battery will pop out.
6.
Insert the new battery into the socket with the side labeled "+" facing up, then snap the battery into place.
7.
Replace the computer cover (see
8.
Connect your computer and devices to electrical outlets, and then turn them on.
9.
Enter system setup (see
System Setup
) and restore the settings you recorded in
. Then go to the Maintenance section and clear the low battery
and other errors associated with the battery replacement in the Event Log.
10.
Properly dispose of the old battery.
See the Product Information Guide for battery disposal information.
Power Supply
1
battery release lever
2
battery (positive side)
NOTICE:
To connect a network cable, first plug the cable into the network device and then plug it into the computer.