Chapter 1 Getting Started72. Locate the backup battery switch and turn it on.3. Position the battery pack, making sure the battery contacts are aligned with thecontacts in the compartment and the battery is placed on top of the plastic tab,as shown in the following illustration.4. Slide the battery pack into the battery bay while simultaneously pulling the bat-tery hook until the battery clicks into place.5. Replace the battery compartment cover.Backup batteryswitchContactsPlastic tabBattery hook