Figure 42. Removing and installing the power supply blank1. power supply blank 2. power supply bayInstalling the power supply unit blankInstall the power supply unit blank only in the second power supply unit bay.To install the power supply unit blank, align the blank with the power supply unit bay and push it intothe chassis until it clicks into place.System batteryReplacing the system batteryPrerequisites1. Ensure that you read the Safety instructions.2. Follow the procedure listed in Before working inside your system.3. Remove the cooling shroud.WARNING: There is a danger of a new battery exploding if it is incorrectly installed. Replace thebattery only with the same or equivalent type recommended by the manufacturer. See yoursafety information for additional information.CAUTION: Many repairs may only be done by a certified service technician. You should onlyperform troubleshooting and simple repairs as authorized in your product documentation, or asdirected by the online or telephone service and support team. Damage due to servicing that isnot authorized by Dell is not covered by your warranty. Read and follow the safety instructionsthat came with the product.Steps1. Locate the battery socket. For more information, see System Board Connectors.109