Owners Manual

Figure 52. Installing the PSU blank
1. PSU blank 2. PSU bay
Related Links
Safety instructions
Removing the power supply unit blank
System battery
The system battery is used for low-level system functions like powering the real-time clock and storing
the computer’s BIOS settings.
Replacing the system battery
Prerequisites
WARNING: There is a danger of a new battery exploding if it is incorrectly installed. Replace the
battery only with the same or equivalent type recommended by the manufacturer. For more
information, see the safety information that shipped with your system.
CAUTION: Many repairs may only be done by a certified service technician. You should only
perform troubleshooting and simple repairs as authorized in your product documentation, or as
directed by the online or telephone service and support team. Damage due to servicing that is
not authorized by Dell is not covered by your warranty. Read and follow the safety instructions
that are shipped with your product.
1. Follow the safety guidelines listed in the Safety instructions section.
2. Follow the procedure listed in the Before working inside your system section.
3. Keep the plastic scribe ready.
4. Remove the cooling shroud.
NOTE: If applicable, close the expansion card latch on the cooling shroud to release the full
length card.
5. If applicable, disconnect the power or data cables from expansion card(s).
6. If applicable, remove the expansion card riser.
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