Lenovo ThinkCentre 7515 Maintenance Manual page 159

Figure 65. Removing the internal speaker
6. Push the four tabs on the bottom of the internal speaker one by one as shown
to release the internal speaker, and then lift the internal speaker straight up to
completely remove it from the chassis.
7. Remove the thermal sensor cable latched on the bottom of the old internal
speaker and install it on the new internal speaker.
Chapter 9. Replacing FRUs - 607 computers
153