9. Position the new power button board in the power button board holder so that the tab 1 aligns with theslot on the new power button board. Then, press the power button board as shown until it snaps intoposition and is secured by the tab 1 .Figure14. Installing the power button board10. Connect the cable of the new power button board to the front panel connector on the system board.See “Parts on the system board” on page 6.11. Reinstall the front bezel. See “Replacing the front bezel” on page 48.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 66.Replacing the optical driveAttention: Do not open your computer or attempt any repair before reading and understanding the “Readthis first: Important safety information” on page iii.To replace the optical drive, do the following:1. Remove any media from the drives and turn off all connected devices and the computer. Then,disconnect all power cords from electrical outlets and disconnect all cables that are connected to thecomputer.2. Remove the computer cover. See “Removing the computer cover” on page 48.3. Remove the front bezel. See “Replacing the front bezel” on page 48.4. Locate the optical drive. See “Computer components” on page 5.5. Disconnect the signal cable and the power cable from the rear of the optical drive.52 Lenovo S510 User Guide