Lenovo ThinkCentre M92z Hardware Maintenance Manual - ThinkCentre M92z (type 3 - Page 115

Replacing the battery, off the computer.

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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 127. 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

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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 127.
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