Dell PowerEdge R905 Hardware Owner's Manual (PDF) - Page 115
System Battery, Replacing the System Battery
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CAUTION: Only trained service technicians are authorized to remove the system cover and access any of the components inside the system. See your Product Information Guide for complete information about safety precautions, working inside the computer, and protecting against electrostatic discharge. 1 Turn off the system, including any attached peripherals, and disconnect the system from the electrical outlet. 2 Open the system. See "Opening the System" on page 65. 3 Ground yourself by touching an unpainted metal surface on the back of the system, unpack the drive, and compare the jumper and switch settings with those in the documentation that came with the drive. 4 Install the Fibre Channel HBA in an expansion slot. See "Installing an Expansion Card" on page 78. 5 Connect the end of the Fibre Channel cable to the connector on the HBA card bracket. 6 Close the system. See "Closing the System" on page 66. 7 Reconnect the system and peripherals to their electrical outlets, and turn them on. System Battery The system battery is a 3.0-volt (V), coin-cell battery. Replacing the System Battery CAUTION: Only trained service technicians are authorized to remove the system cover and access any of the components inside the system. See your Product Information Guide for complete information about safety precautions, working inside the computer, and protecting against electrostatic discharge. CAUTION: There is a danger of a new battery exploding if it is incorrectly installed. Replace the battery only with the same or equivalent type recommended by the manufacturer. Discard used batteries according to the manufacturer's instructions. See your System Information Guide for additional information. 1 Turn off the system, including any attached peripherals, and disconnect the system from the electrical outlet. 2 Open the system. See "Opening the System" on page 65. 3 Remove the PEM. See "Removing the PEM or PEM Shell" on page 73. Installing System Components 115