Removing The Power Supply BlankCAUTION: To ensure proper system cooling, the power supply blank must be installed in the second power supplybay in a non-redundant configuration. Remove the power supply blank only if you are installing a second powersupply.If you are installing a second power supply, remove the power supply blank in the bay by pulling outward on theblank.Figure 51. Removing and Installing the Power Supply Blank1. power supply blankInstalling The Power Supply BlankNOTE: Install the power supply blank only in the second power supply bay.To install the power supply blank, align the blank with the power supply bay and insert it into the chassis until it clicksinto place.System BatteryReplacing The System BatteryWARNING: There is a danger of a new battery exploding if it is incorrectly installed. Replace the battery only withthe same or equivalent type recommended by the manufacturer. See your safety information for additionalinformation.CAUTION: Many repairs may only be done by a certified service technician. You should only performtroubleshooting and simple repairs as authorized in your product documentation, or as directed by the online ortelephone service and support team. Damage due to servicing that is not authorized by Dell is not covered by yourwarranty. Read and follow the safety instructions that came with the product.91