Lenovo ThinkCentre M70z Hardware Maintenance Manual (HMM) - Page 109

Replacing the power switch module

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Figure 37. Removing the rear I/O assembly cover 6. To reinstall the rear I/O assembly, position the new rear I/O assembly into place, and then align the screw holes with corresponding holes in the computer main bracket. Install the four screws to secure the rear I/O assembly. 7. Go to "Completing the parts replacement" on page 111. Replacing the power switch module 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 switch module. To replace the power switch module, do the following: 1. Remove all media from the drives and turn off all attached devices and the computer. Then, disconnect all power cords from electrical outlets and disconnect all cables that are connected to the computer. 2. Place a soft, clean towel or cloth on the desk or surface. Hold the sides of your computer and gently lay it down so that the screen is against the surface and the cover is facing up. 3. Remove the computer cover. See "Removing the computer cover" on page 71. 4. Locate the power switch module in the computer. See "FRU locations" on page 67. Chapter 8. Replacing FRUs 103

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Figure 37. Removing the rear I/O assembly cover
6. To reinstall the rear I/O assembly, position the new rear I/O assembly into place, and then align the
screw holes with corresponding holes in the computer main bracket. Install the four screws to secure
the rear I/O assembly.
7. Go to “Completing the parts replacement” on page 111.
Replacing the power switch module
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:
This section provides instructions on how to replace the power switch module.
To replace the power switch module, do the following:
1. Remove all media from the drives and turn off all attached devices and the computer. Then, disconnect
all power cords from electrical outlets and disconnect all cables that are connected to the computer.
2. Place a soft, clean towel or cloth on the desk or surface. Hold the sides of your computer and gently lay
it down so that the screen is against the surface and the cover is facing up.
3. Remove the computer cover. See “Removing the computer cover” on page 71.
4. Locate the power switch module in the computer. See “FRU locations” on page 67.
Chapter 8
.
Replacing FRUs
103