Replacing The Power Supply Assembly - Lenovo ThinkCentre M73z Hardware Maintenance Manual

7. Remove the three screws
Figure 31. Removing the VESA mount bracket
8. To install the VESA mount bracket, position the VESA mount bracket in the chassis so that the three
screw holes in the VESA mount bracket align with the corresponding holes in the chassis. Then, install
the three screws to secure the VESA mount bracket.
9. Install the rear I/O assembly. See "Replacing the rear I/O assembly" on page 89.
10. Install the system board shield. See "Removing and installing the system board shield" on page 88.
What to do next:
• To work with another piece of hardware, go to the appropriate section.
• To complete the installation or replacement, go to "Completing the parts replacement" on page 118.

Replacing the power supply assembly

Attention: Do not open your computer or attempt any repair before reading and understanding the Chapter
1 "Safety information" on page 1.
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) certification.
CAUTION:
Never remove the cover on a power supply or any part that has the following label attached.
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ThinkCentre M73z Hardware Maintenance Manual
1 , and then lift the VESA mount bracket to remove it from the chassis.