Cover Presence Switch - Lenovo 30C5 Hardware Maintenance Manual

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.
Refer to the "Lithium coin-cell battery notice" in the Safety and Warranty Guide for information about
disposing of the coin-cell battery.
To remove and install the coin-cell battery, do the following:
1. Prepare your computer. See "Preparing your computer" on page 96.
2. Lay the computer on its side for easier access to the system board.
3. Locate the coin-cell battery. See "Parts on the system board" on page 38.
4. Remove any PCIe cards that might prevent your access to the coin-cell battery. See "PCIe card" on
page 101.
5. Remove the old coin-cell battery as shown.
Figure 74. Removing the coin-cell battery
6. Install the new coin-cell battery as shown.
Figure 75. Installing the coin-cell battery
7. Reinstall the PCIe cards if you have removed them. See "PCIe card" on page 101.
8. Close the drive bay assembly and reinstall the front bezel. Then, reinstall the computer cover and
reconnect the cables. See "Completing the parts replacement" on page 183.
Note: When the computer is turned on for the first time after replacing the coin-cell battery, an error
message might be displayed. This is normal after replacing the coin-cell battery.
9. Turn on the computer and all attached devices.
10. Use the Setup Utility program to set the date, time, and any passwords. See "Using the Setup Utility
program" on page 65.

Cover presence switch

Attention: Do not open your computer or attempt any repair before reading and understanding the Chapter
1 "Read this first: Important safety information" on page 1.
To remove or install the cover presence switch, do the following:
1. Prepare your computer. See "Preparing your computer" on page 96.
.
Chapter 9 Hardware removal and installation
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