Lenovo V130–20IGM AIO User Manual And Hardware Maintenance Manual page 34

Your computer has a special type of memory that maintains the date, time, and settings for built-in features,
such as parallel connector assignments (configurations). 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 coin-cell
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.
To replace the coin-cell battery,
1. Remove any media from the drives and turn off all connected devices and the computer. Disconnect all
power cords from electrical outlets and disconnect all cables from the computer.
2. Place a soft, clean towel or cloth on the desk or surface. Hold the sides of your computer and gently lay
it down so that the computer cover is against the surface and the screen is facing up.
3. Remove the tilt-only monitor stand base. See "Replacing the tilt-only monitor stand base" on page 17.
4. Remove the front cover. See "Removing the front cover" on page 17.
5. Remove the tilt-only monitor stand. See "Replacing the tilt-only monitor stand" on page 19.
6. Remove the system board shield. See "Replacing the system board shield" on page 27.
7. Replace the coin-cell battery.
Figure 40. Removing the coin-cell battery
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V130–20IGM AIO User Guide and Hardware Maintenance Manual