Lenovo THINKCENTRE 4485 - Manual (Page 120)

3. Locate the internal speaker connector on the system board. See “Locating parts on the system board”
on page 77.
4. Disconnect the internal speaker cable from the system board.
5. Push the metal tab 1 on the top of the internal speaker outward and slide the internal speaker upward
to completely remove it from the chassis.
Figure 46. Removing the old internal speaker
112 ThinkCentre Hardware Maintenance Manual