Lenovo 4223, 4228, 4229 Installing or replacing the microprocessor, Removing the internal speaker

Models: 4229 4223 4228

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Note: The internal speaker is only available on some models.

To replace the internal speaker, do the following:

1.Turn off the computer and disconnect all power cords from electrical outlets.

2.Remove the computer cover. See “Removing the computer cover” on page 64.

3.Locate the internal speaker connector and disconnect the internal speaker cable form the system board. See “Locating parts on the system board” on page 58.

4. Press the tab

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inward and slide the internal speaker

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upward to completely remove it from the chassis.

Figure 36. Removing the internal speaker

5.Position the new internal speaker to insert the two tabs 2 into the corresponding holes in the chassis, and then push downward the internal speaker until it is secured in place.

6.Connect the internal speaker cable to the system board. See “Locating parts on the system board” on page 58.

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 104.

Installing or replacing the microprocessor

This topic provides instructions on how to install or replace the microprocessor.

90ThinkStation Hardware Maintenance Manual

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Lenovo 4223, 4228, 4229 manual Installing or replacing the microprocessor, Removing the internal speaker