Dell PowerVault 770N (Deskside NAS Appliance) - Manual (Page 68)

according to the manufacturer's instructions. See the System Information Guide for additional information.
CAUTION: Only trained service technicians are authorized to remove the system cover and access any of
the components inside the system. See your System Information Guide for complete information about
safety precautions, working inside the computer, and protecting against electrostatic discharge.
1. Open the bezel (see " Removing the Bezel ").
2. Turn off the system, including any attached peripherals, and disconnect the system from the electrical outlet.
3. Remove the cover (see " Removing the Cover ").
4. Remove any expansion cards that are installed above the system battery (see " Expansion Cards ").
5. Remove the system battery (see Figure 4-31 ).
See Figure 4-31 to locate the system battery on the system board.
You can pry the system battery out of its connector with your fingers or with a blunt, nonconductive object such as a
plastic screwdriver.
6. Install the new system battery with the side labeled "+" facing up (see Figure 4-31 ).
Figure 4-31. Removing and Installing the System Battery
7. Replace any expansion cards that were removed in step 3 (see " Expansion Cards ").
8. Replace the cover (see " Removing the Cover ").
9. Reconnect the system to its electrical outlet and turn the system on, including any attached peripherals.
10. Enter the System Setup program to confirm that the battery is operating properly (see " Using the System Setup
Program ").
11. Enter the correct time and date in the System Setup program's Time and Date fields.
12. Exit the System Setup program.
13. To test the newly installed battery, turn off the system and disconnect it from the electrical outlet for at least an hour.
14. After an hour, reconnect the system to its electrical outlet and turn it on.
15. Enter the System Setup program and if the time and date are still incorrect, replace the system board (see " System
Board ").
System Board