Lenovo ThinkCentre 3379, Hardware Maintenance Manual

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4. Position the replacement memory module over the memory slot. Make sure 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.
5. Go to “Completing the FRU replacement” on page 122.
Replacing the power supply
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.
Attention
Never remove the cover on a power supply or any part that has the
following label attached.
Hazardous voltage, current, and energy levels are present inside any
component that has this label attached. There are no serviceable parts inside
these components.
To replace the power supply:
1. Remove the computer cover. See “Removing the computer cover” on page 86.
2. Disconnect the power supply cables from the system board and from all
drives. See “Locating parts on the system board” on page 89.
Figure 8. Installing the memory module
92
Hardware Maintenance Manual