This step-by-step procedure will allow the reader to get to and replace the optical drive responsible for reading the disc. Be aware that any replacement or teardown beyond the hard drive voids the Sony warranty.
Disconnect the ribbon wire from the optical drive by pressing down on the metal release tab and gently pulling the ribbon wire. This should not require force.
The optical drive can now be lifted straight up and removed from the system.
Be aware that the optical drive is "married" to the motherboard. If you need to replace your optical drive you must remove the motherboard on the original optical drive and install it on the drive you intend to install in your PS4.