never be placed on top of the ESD bag because only the inside of the bag is shielded. Always place parts in your hand, on the ESD mat,in the system, or inside an anti-static bag.• Transporting Sensitive Components – When transporting ESD sensitive components such as replacement parts or parts to bereturned to Dell, it is critical to place these parts in anti-static bags for safe transport.ESD protection summaryIt is recommended that all field service technicians use the traditional wired ESD grounding wrist strap and protective anti-static mat at alltimes when servicing Dell products. In addition, it is critical that technicians keep sensitive parts separate from all insulator parts whileperforming service and that they use anti-static bags for transporting sensitive components.Transporting sensitive componentsWhen transporting ESD sensitive components such as replacement parts or parts to be returned to Dell, it is critical to place these parts inanti-static bags for safe transport.Before working inside your computer1 Ensure that your work surface is flat and clean to prevent the computer cover from being scratched.2 Turn off your computer.3 If the computer is connected to a docking device (docked), undock it.4 Disconnect all network cables from the computer (if available).CAUTION: If your computer has an RJ45 port, disconnect the network cable by first unplugging the cable from yourcomputer.5 Disconnect your computer and all attached devices from their electrical outlets.6 Open the display.7 Press and hold the power button for few seconds, to ground the system board.CAUTION: To guard against electrical shock unplug your computer from the electrical outlet before performing Step # 8.CAUTION: To avoid electrostatic discharge, ground yourself by using a wrist grounding strap or by periodically touching anunpainted metal surface at the same time as touching a connector on the back of the computer.8 Remove any installed ExpressCards or Smart Cards from the appropriate slots.After working inside your computerAfter you complete any replacement procedure, ensure you connect any external devices, cards, and cables before turning on yourcomputer.CAUTION: To avoid damage to the computer, use only the battery designed for this particular Dell computer. Do not use batteriesdesigned for other Dell computers.1 Replace the battery.2 Replace the base cover.3 Connect any external devices, such as a port replicator or media base, and replace any cards, such as an ExpressCard.4 Connect any telephone or network cables to your computer.CAUTION: To connect a network cable, first plug the cable into the network device and then plug it into thecomputer.5 Connect your computer and all attached devices to their electrical outlets.6 Turn on your computer.Working on your computer 5