Coin-Cell Battery; Power Supply Assembly - Lenovo ThinkCentre M70s Gen 4 User Manual

Coin-cell battery

Prerequisite
Before you start, read Generic Safety and Compliance Notices, and print the following instructions.
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:
• "Computer cover" on page 26
• "Optical drive" on page 27
• "Front bezel" on page 30
• "Drive bay assembly" on page 31
Removal steps
Note: After installing a new coin-cell battery, reset the system date and time in the UEFI BIOS menu.

Power supply assembly

Prerequisite
Before you start, read Generic Safety and Compliance Notices, and print the following instructions.
Although there are no moving parts in the computer after the power cord has been disconnected, the
following warnings are required for your safety.
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