Lenovo 14w 81MQ Hardware Maintenance Manual page 41

Step 1. Detach the coin-cell battery connector from the system board.
Figure 9. Detach the connector
Step 2. Remove the coin-cell battery.
Figure 10. Remove the coin-cell battery
Refer to "Major FRUs and CRUs" on page 26 to look up details about the following replacement part:
coin-cell battery
.
Chapter 4 Removing a FRU or CRU
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