• The iPod/iPhone is not connected.
– Make sure the iPod/iPhone is correctly connected (refer to “Connections”).
Make sure the cable is not bent excessively.
• There are no songs in the iPod/iPhone.
– Download songs to the iPod/iPhone, and connect to this unit.
• Communication error or boot error, etc.
– You can solve the problem by switching the source, turning ACC off/on, or turning power off/on.
• The iPod/iPhone version is too low.
– Update the iPod/iPhone version.
• The iPod/iPhone authentication fails.
– Remove the iPod/iPhone and plug in again. Replace the device if playback still cannot be performed.
• The iPod/iPhone is connected to the front USB terminal of this unit.
– Connect iPod/iPhone to the rear USB terminal only as the front USB terminal does not support iPod/iPhone connection.