WARNING: This page is about a different car, the 2016 Kia Forte5, 2016 Kia Forte Koup, and 2016 Kia Forte. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: CD Player - Troubleshooting Flowchart (1 Of 2)
Courtesy of KIA MOTORS AMERICA, INC.
Fig 2: CD Player - Troubleshooting Flowchart (2 Of 2)