Dell OptiPlex Gn Reference and Installation Guide (.pdf) - Page 76
System Battery and Battery, Socket, rect settings. See Using the System
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Setup program. If the date and time are not correct in the System Setup program, replace your battery. You can operate your system without a battery; however, without a battery, the system configuration information is erased if the system is turned off or unplugged from AC power. In this case, you must enter the System Setup program and reset the configuration options. WARNING: There is a danger of the 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. Use the following procedure to replace the system battery with another CR2032 coin-cell battery: 1. If you have not already done so, make a copy of your system configuration information in the System Setup program. If the settings are lost while you are replacing the battery, refer to your written or printed copy of the system configuration information to restore the correct settings. See Chapter 2, "Using the System Setup Program," for instructions. 2. Remove the computer cover as instructed in "Removing the Computer Cover" in Chapter 5. CAUTION: See "Protecting Against Electrostatic Discharge" in the safety instructions at the front of this guide. 3. To access the battery on the system board, remove the expansion-card cage as described in "Removing the Expansion-Card Cage" in Chapter 5. 4. Locate the battery and remove it. CAUTION: If you pry the battery out of its socket with a blunt object, be careful not to touch the system board with the object. Make certain that the object is inserted between the battery and the socket before attempting to pry out the battery. Otherwise, you may damage the system board by prying off the socket or by breaking circuit traces on the system board. The battery is mounted in a socket labeled "BATTERY" on the top left side of the system board as you face the side of the system (see Figure 6-1). Pry the battery out of its socket with your fingers or with a blunt, nonconductive object, such as a plastic screwdriver. 5. Install the new battery. Orient the battery with the side labeled "+" facing up (see Figure 6-14). Then insert the battery into the socket, and snap it into place. battery socket Figure 6-14. System Battery and Battery Socket 6. Replace the expansion-card cage as described in "Replacing the Expansion-Card Cage" in Chapter 5. 6-10 Dell OptiPlex Gn and Gn+ Low-Profile Systems Reference and Installation Guide