Lenovo 4223 Computer Hardware User Manual


 
8. Slide the card reader with retainer into the card reader drive bay until it snaps into position.
Figure 21. Installing the card reader
9. Reconnect the card reader cable to the system board. See “Locating parts on the system board”
on page 58.
10. Reinstall the front bezel. See “Removing and reinstalling the front bezel” on page 65.
What to do next:
To work with another piece of hardware, go to the appropriate section.
To complete the installation or replacement, go to “Completing the parts replacement” on page 104.
Replacing the battery
Attention: Do not open your computer or attempt any repair before reading and understanding the “Important
Safety Information” on page 1
.
Your computer has a special type of memory that maintains the date, time, and settings for built-in features,
such as parallel-port assignments (conguration). A battery keeps this information active when you turn
off the computer.
The battery normally requires no charging or maintenance throughout its life; however, no battery lasts
forever. If the battery fails, the date, time, and conguration information (including passwords) are lost. An
error message is displayed when you turn on the computer.
Chapter 10. Replacing FRUs 77