Dell Dimension 4500S - Manual (Page 30)

11. Lift the power supply up and out of the computer.
Replacing the Power Supply
1. Slide the power supply into place.
2. Reconnect the DC power cables.
3. Connect the AC power cable to the AC power connector on the back of the power supply.
4. Reattach the power cables to the side of the hard drive and replace the card cage replace the expansion-card cage.
5. Run the cables underneath the clips.
6. Press the clips to close them over the cables.
7. Close the computer cover .
8. Attach the computer stand (optional).
9. Connect your computer and devices to electrical outlets, and turn them on.
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.
1. Record all the screens in the system setup program so that you can restore the correct settings in step 10 .
2. Shut down the computer .
3. Turn off any attached devices and disconnect them from their electrical outlets.
4. Disconnect the computer power cable from the wall outlet, and then press the power button to ground the system board.
5. Open the computer cover .
6. Locate the battery socket BATTERY on the system board and pry the battery out of its socket with your fingers or with a plastic screwdriver.
7. Insert the battery into the socket with the side labeled "+" facing up.
8. Replace the computer cover .
9. Connect your computer and devices to electrical outlets, and turn them on.
NOTICE: To connect a network cable, first plug the cable into the network wall jack and then plug it into the computer.
CAUTION: Before you begin any of the procedures in this section, follow the " Safety Instructions ."
CAUTION: To guard against electrical shock, always unplug your computer from the electrical outlet before opening the cover.
CAUTION: A new battery can explode if it is incorrectly installed. Replace the 3-V CR2032 battery only with the same or equivalent type
recommended by the manufacturer. Discard used batteries according to the manufacturer's instructions (see " Battery Disposal ").
NOTICE: To disconnect a network cable, first unplug the cable from your computer and then unplug it from the network wall jack.
NOTICE: To avoid damage to the system board while you pry the battery loose, be sure to insert the plastic screwdriver between the battery and the
socket (not the system board).
NOTICE: To connect a network cable, first plug the cable into the network wall jack and then plug it into the computer.