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3. Reconnect the USB cable to the card.
4. Replace the top cover. See “Replacing the Top Cover” (page 182).
5. If rack installed, slide the server completely into the rack. See “Inserting the Server into the
Rack” (page 180).
6. Reconnect all external cables to the card.
7. Reconnect the power cables and power on the server. See “Powering On the Server”
(page 94).
Removing and Replacing the Core I/O Board Battery
Replace the battery with an identical or equivalent battery only. Dispose of used batteries
according to the manufacturer’s instructions.
WARNING! Lithium batteries can explode if mistreated. Do not recharge, disassemble, or
dispose of batteries in a fire. Failure to observe this warning can result in personal injury or
damage to equipment.
Removing the Core I/O Board Battery
WARNING! Ensure that the system is powered off and all power sources have been disconnected
from the server prior to performing this procedure.
Voltages are present at various locations within the server whenever an ac power source is
connected. This voltage is present even when the main power switch is in the off position.
Failure to observe this warning can result in personal injury or damage to equipment.
CAUTION: Observe all ESD safety precautions before attempting this procedure. Failure to
follow ESD safety precautions can result in damage to the server.
IMPORTANT: Before removing the system battery, record all boot and LAN configuration
settings. (Find the settings using the INFO ALL EFI command.) You must reset these values after
replacing the battery.
To remove the core I/O board battery, follow these steps:
1. Power off the server and disconnect the power cables. See “Powering Off the Server”
(page 95).
2. If rack installed, slide the server completely out from the rack. See “Extending the Server
from the Rack” (page 180).
3. Remove the top cover from the chassis. See “Removing the Top Cover” (page 181).
4. Remove the core I/O board. See “Removing the Core I/O Board” (page 237).
5. Locate the battery on the core I/O board (Figure 6-29).
6. Insert a flat tool under the battery and carefully lift upward to pry the battery from the
socket.
238 Removing and Replacing Server Components