Dell OptiPlex 330 (Late 2007) - Manual (Page 91)

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.
To replace the battery:
1. Record all the screens in system setup (see System Setup ) so that you can restore the correct settings in step 9 .
2. Follow the procedures in Before You Begin .
3. Remove the computer cover (see Removing the Computer Cover ).
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 Replacing the Computer Cover ).
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 step 1 . 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
Replacing the Power Supply
1. Follow the procedures in Before You Begin .
2. Remove the computer cover (see Removing the Computer Cover ).
3. Disconnect the DC power cables from the system board and the drives.
Note the routing of the DC power cables underneath the tabs in the computer chassis as you remove them from the system board and drives. You must
route these cables properly when you replace them to prevent them from being pinched or crimped.
4. Remove the hard drive cable, CD or DVD drive data cable, front panel ribbon cable, and any other cables from the securing clip on the side of the power
supply.
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.
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.
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.