Coin-Cell Battery - Lenovo ThinkCentre M75q Gen 2 User Manual

Removal steps

Coin-cell battery

Prerequisite
Before you start, read Appendix A "Important safety information" on page 61 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 (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 and time information is lost. An error message is
displayed when you turn on the computer.
To dispose of the coin-cell battery, refer to the "Lithium coin-cell battery notice" in the Safety and Warranty
Guide.
For access, remove these parts in order, if any:
• "Computer cover" on page 46
• "Internal speaker" on page 47
• "System fan" on page 48
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Chapter 7 CRU replacement