Lenovo ThinkCentre M75q-1 User Manual page 61

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) is lost. An error message is displayed when you turn on the computer.
Replacement procedure
1. Remove the computer cover. See "Computer cover" on page 47.
2. Remove the storage drive. See "Storage drive" on page 49.
3. Remove the internal speaker if necessary. See "Internal speaker" on page 52.
4. Remove the system fan. See "System fan" on page 53.
5. Replace the coin-cell battery.
Figure 25. Pressing the metallic tab
Figure 26. Removing the coin-cell battery
.
Chapter 7 CRU replacement
55