Lenovo ThinkCentre A70z Hardware Maintenance Manual for ThinkCentre A70z - Page 97

Installing internal speakers, Replacing the rear I/O assembly

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7. Remove the internal speakers and internal speaker cables from the computer. Installing internal speakers To install internal speakers, 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. Route the internal speaker cables and then position new internal speakers over the front bezel and make sure the four screw holes of each internal speaker align with those in the front bezel. 6. Reinstall the four screws to secure the internal speakers to the front bezel. 7. Reconnect the internal speaker cable connectors to the system board. 8. Go to "Completing the FRU installation" on page 108. Replacing the rear I/O assembly 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 Chapter 8. Replacing FRUs 91

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7. Remove the internal speakers and internal speaker cables from the computer.
Installing internal speakers
To install internal speakers, 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. Route the internal speaker cables and then position new internal speakers over the front bezel and make
sure the four screw holes of each internal speaker align with those in the front bezel.
6. Reinstall the four screws to secure the internal speakers to the front bezel.
7. Reconnect the internal speaker cable connectors to the system board.
8. Go to “Completing the FRU installation” on page 108.
Replacing the rear I/O assembly
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
Chapter 8
.
Replacing FRUs
91