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Replacing the power supply assembly
Attention:
Do not open your computer or attempt any repair before reading and understanding the “Important safety information”
on page v
.
This section provides instructions on how to replace the power supply assembly.
Although there are no moving parts in your computer after the power cord has been disconnected, the
following warnings are required for your safety and proper Underwriters Laboratories (UL) certication.
CAUTION:
Hazardous moving parts. Keep ngers and other body parts away.
CAUTION:
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. If you suspect a problem with
one of these parts, contact a service technician.
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 34.
3. Disconnect the power supply assembly cables from all drives and from the 24-pin power connector and
4-pin power connector on the system board. See “Locating parts on the system board” on page 11.
Note: You might also need to release the power supply assembly cables from some cable clips or ties
that secure the cables to the chassis.
46 ThinkCentre User Guide