Lenovo ThinkCentre M71z, Руководство по техническому обслуживанию аппаратной части

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Replacing the internal speakers
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 internal speakers.
To replace the internal speakers, 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 other flat 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 94.
4. Locate the internal speakers in the computer. See “FRU locations” on page 86.
5. Remove the system board shield. See “Removing and reinstalling the system board shield” on page 101.
6. Note the location of the internal speaker cable connection and the routing of the internal speaker cables.
Disconnect the internal speaker cables from the system board.
7. Remove the two screws that secure each internal speaker to the front bezel, and then remove the
internal speakers from the computer.
Figure 36. Removing the internal speakers
8. Route the new internal speaker cables, and then position the new internal speakers on the front bezel so
that the two screw holes in each internal speaker align with those in the front bezel.
9. Reinstall the two screws to secure each of the internal speakers to the front bezel.
10. Connect the internal speaker cables to the system board. See “System board parts and connectors”
on page 88.
11. Reinstall the system board shield. See “Removing and reinstalling the system board shield” on page 101.
12. Go to “Completing the parts replacement” on page 124.
Chapter 8
.
Replacing FRUs
115