Replacing The Power Supply - Lenovo ThinkCentre 3231 Hardware Maintenance Manual

4. Position the replacement memory module over the memory slot. Make sure the
Figure 8. Installing the memory module
5. Go to "Completing the FRU replacement" on page 122.

Replacing the power supply

This section provides instructions on how to replace the power supply.
To replace the power supply:
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Hardware Maintenance Manual
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.
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
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.
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.