Lenovo 4013 Personal Computer User Manual


 
8. Position the new memory module over the memory slot. Make sure that the
notch 1 on the new memory module is aligned with the key 2 in the
memory slot. Then, press the new memory module straight down into the
memory slot until the retaining clips close and the new memory module snaps
into position.
9. Reinstall all parts and reconnect all cables that have been removed.
What to do next:
v To work with another piece of hardware, go to the appropriate section.
v To complete the installation or replacement, go to “Completing the parts
replacement” on page 46.
Replacing the power supply assembly
Attention
Do not open your computer or attempt any repair before reading and understanding the
“Important safety information” in the ThinkCentre Safety and Warranty Guide that came with
your computer. To obtain a copy of the ThinkCentre Safety and Warranty Guide,goto:
http://www.lenovo.com/support
This section provides instructions on how to replace the power supply assembly.
To replace the power supply assembly, do the following:
1. Remove all media from the drives and turn off all attached devices and the
computer. Then, disconnect all power cords from electrical outlets and
disconnect all cables that are connected to the computer.
2. Remove the computer cover. See “Removing the computer cover” on page 16.
3. Disconnect the power supply assembly cables from the system board and all
drives. See “Locating parts on the system board” on page 12.
Figure 14. Installing the memory module
Chapter 2. Installing or replacing hardware 23