Lenovo 3699, Hardware Maintenance Manual

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Figure 8. Removing a memory module
6. Position the new memory module over the memory slot. Make sure that the notch 1 on the memory
module aligns correctly with the slot key
2
on the system board. Push the memory module straight
down into the slot until the retaining clips close.
Figure 9. Installing a memory module
7. Reinstall the PCI Express x16 graphics card if you have removed it.
8. Go to “Completing the parts replacement” on page 94.
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 , go to:
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. Turn off the computer and disconnect all power cords from electrical outlets.
2. Remove the computer cover. See “Removing the computer cover” on page 64.
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ThinkCentre Hardware Maintenance Manual