Lenovo 4285 Personal Computer User Manual


 
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. Reconnect the internal speaker cables to the system board. See “System board part and connector
locations” on page 12.
11. Reinstall the rear I/O assembly cover. See “Removing or reinstalling the rear I/O assembly cover”
on page 19.
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 52.
Replacing the integrated camera with microphone
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 integrated camera with microphone.
Note: The integrated camera with microphone is available only in some models.
To replace the integrated camera with microphone, 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 15.
4. Locate the integrated camera with microphone in the computer. See “Component locations” on page 11.
5. Note the routing of the integrated camera cable and then disconnect the integrated camera cable from
the system board. See “System board part and connector locations” on page 12.
Chapter 2. Installing or replacing hardware 41