Replacing The Battery - Lenovo ThinkCentre Hardware Maintenance Manual

Figure 39. Removing the rear PS/2 connectors and serial port assembly
7. Align the screw hole in the new rear PS/2 connectors and serial port assembly with the corresponding
screw hole in the chassis. Then, install the screw to secure the new rear PS/2 connectors and serial
port assembly to the chassis.
8. Connect the cables of the new rear PS/2 connectors and serial port assembly to the system board. See
"Locating parts on the system board" on page 79.
9. Reinstall the rear I/O assembly. See "Removing and reinstalling the rear I/O assembly" on page 85.
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 126.

Replacing the battery

Attention:
Do not open your computer or attempt any repair before reading and understanding "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 (configuration). 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 configuration information (including passwords) are lost. An
error message is displayed when you turn on the computer.
.
Chapter 9 Replacing FRUs
111