Lenovo ThinkStation P920 Hardware Maintenance Manual page 186

Refer to the "Lithium coin-cell battery notice" in the Safety, Warranty, and Setup Guide for information about
disposing of the coin-cell battery.
To remove and install the coin-cell battery, do the following:
1. Prepare your computer. See "Preparing your computer and removing the computer cover" on page 103.
2. To access the coin-cell battery, remove the following parts:
• "Direct cooling air baffle" on page 107 (if necessary)
• "Power supply assembly" on page 150
• "Front fan assembly" on page 137
• "M.2 solid-state drive holder" on page 140
• "PCIe card retainer" on page 155 (if necessary)
• "Super capacitor module" on page 170 (if necessary)
• "Full-length PCIe card" on page 163 (if necessary)
• "Multi-function bracket in the upper position" on page 173
3. Locate the coin-cell battery. See "Parts on the system board" on page 38.
4. Remove the old coin-cell battery as shown.
Figure 134. Removing the coin-cell battery
5. Install the new coin-cell battery as shown.
Figure 135. Installing the coin-cell battery
6. Reinstall the following parts if you have removed them:
• "Multi-function bracket in the upper position" on page 173
• "Front fan assembly" on page 137
• "Power supply assembly" on page 150
• "M.2 solid-state drive holder" on page 140
• "PCIe card retainer" on page 155
• "Super capacitor module" on page 170
• "Full-length PCIe card" on page 163
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P920 Hardware Maintenance Manual