Lenovo ThinkCentre A70z Hardware Maintenance Manual for ThinkCentre A70z - Page 79

Replacing the rear I/O shielding, ThinkCentre Safety and Warranty Guide

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4. Install the rear I/O shielding. See "Installing the rear I/O shielding" on page 74. 5. Go to "Completing the FRU installation" on page 108. Replacing the rear I/O shielding 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 rear I/O shielding. Removing the rear I/O shielding To remove the rear I/O shielding, do the following: 1. Turn off the computer. 2. Disconnect all cables, power cords, and external options from your computer. See "Rear connectors" on page 65. 3. 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. 4. Remove the computer cover. See "Removing the computer cover" on page 70. 5. Locate the rear I/O assembly on the system board. See "System board connectors" on page 68. 6. Remove the two screws that secure the rear I/O shielding to the rear I/O assembly. Carefully remove the rear I/O shielding from the rear I/O assembly. Chapter 8. Replacing FRUs 73

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4. Install the rear I/O shielding. See “Installing the rear I/O shielding” on page 74.
5. Go to “Completing the FRU installation” on page 108.
Replacing the rear I/O shielding
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 rear I/O shielding.
Removing the rear I/O shielding
To remove the rear I/O shielding, do the following:
1. Turn off the computer.
2. Disconnect all cables, power cords, and external options from your computer. See “Rear connectors”
on page 65.
3. 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.
4. Remove the computer cover. See “Removing the computer cover” on page 70.
5. Locate the rear I/O assembly on the system board. See “System board connectors” on page 68.
6. Remove the two screws that secure the rear I/O shielding to the rear I/O assembly. Carefully remove
the rear I/O shielding from the rear I/O assembly.
Chapter 8
.
Replacing FRUs
73