Coin-Cell Battery - Lenovo AIO V540-24IWL Hardware Maintenance Manual

Coin-cell battery

Prerequisite
Before you start, read Chapter 2 "Important safety information" on page 27 and print the following
instructions.
Before you open the computer cover, turn off the computer and wait several minutes until the computer is
cool.
Your computer has a special type of memory that maintains the date, time, and settings for built-in features,
such as parallel-connector assignments (configuration). A coin-cell battery keeps this information active
when you turn off the computer.
The coin-cell battery normally requires no charging or maintenance throughout its life; however, no battery
lasts forever. If the coin-cell battery fails, the date, time, and configuration information (including passwords)
are lost. An error message is displayed when you turn on the computer.
Replacement procedure
1. Remove the computer stand. See "Computer stand" on page 57.
2. Remove the computer cover. See "Computer cover" on page 59.
3. Remove the internal speakers. See "Internal speakers" on page 61.
4. Remove the VESA mount bracket. See "VESA mount bracket" on page 62.
5. Remove the system board shield. See "System board shield and system fan" on page 63.
6. Remove the coin-cell battery.
7. Install the coin-cell battery.
8. Reinstall the removed parts. Then, reconnect the power adapter and all disconnected cables to the
computer.
Note: If a locking device is available, use it to lock the computer.
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Hardware Maintenance Manual