Battery; Replacing The Battery - Dell OptiPlex 755 User Manual

Battery

Replacing the Battery

CAUTION:
Before you begin any of the procedures in this section, follow the safety instructions in the
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.
The battery may need replacing if an incorrect time or date is displayed during the boot routine along
with a message such as:
Time-of-day not set - please run SETUP program
or
Invalid configuration information -
please run SETUP program
or
Strike the F1 key to continue,
F2 to run the setup utility
To determine whether you need to replace the battery, reenter the time and date in system setup and exit
the program to save the information. Turn off your computer and disconnect it from the electrical outlet
for a few hours; then reconnect the computer, turn it on, and enter system setup (see "Entering System
Setup" on page 280). If the date and time are not correct in system setup, replace the battery.
You can operate your computer without a battery; however, without a battery, the configuration
information is erased if the computer is turned off or unplugged from the electrical outlet. In this case,
you must enter system setup (see "Entering System Setup" on page 280) and reset the configuration
options.
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 remove the battery:
1 If you have not already done so, make a copy of your configuration information, found in system setup.
2 Follow the procedures in "Before You Begin" on page 21.
3 Remove the computer cover.
4 Locate the battery socket.
Product
303
Battery