122 Installing System ComponentsInstalling a Non-Redundant Power SupplyCAUTION: Many repairs may only be done by a certified service technician. Youshould only perform troubleshooting and simple repairs as authorized in yourproduct documentation, or as directed by the online or telephone service andsupport team. Damage due to servicing that is not authorized by Dell is not coveredby your warranty. Read and follow the safety instructions that came with theproduct.1 Open the system. See "Opening the System" on page 76.2 Place the power supply in the chassis. See Figure 3-19. Tighten the screwto secure the power supply to the chassis.3 Connect all the power cables to the system board, hard drive(s), andoptical drive.4 Close the system. See "Closing the System" on page 77.5 Reconnect the system to its electrical outlet and turn the system on,including any attached peripherals.System BatteryReplacing the System BatteryWARNING: There is a danger of a new battery exploding if it is incorrectlyinstalled. Replace the battery only with the same or equivalent type recommendedby the manufacturer. See your safety information for additional info.CAUTION: Many repairs may only be done by a certified service technician. Youshould only perform troubleshooting and simple repairs as authorized in yourproduct documentation, or as directed by the online or telephone service andsupport team. Damage due to servicing that is not authorized by Dell is not coveredby your warranty. Read and follow the safety instructions that came with theproduct.1 Turn off the system, including any attached peripherals, and disconnectthe system from the electrical outlet.2 Open the system. See "Opening the System" on page 76.3 Locate the battery socket. See Figure 6-1.CAUTION: To avoid damage to the battery connector, you must firmly support theconnector while installing or removing a battery.