Check the following:

1. Are you using the latest version of the firmware?

The “firmware” is the unit’s internal system software. To use this unit more comfortably, always use the latest version of the firmware.

2. Are you using the proper version of Serato DJ?

Serato DJ version 1.5.0 or later is required to control decks using a control CD or control vinyl. The latest version of the Serato DJ software can be acquired from the Serato website below.

3. Are the settings and connections proper?

For details on the settings and connections, see “Controlling the Serato DJ software” in “Quick Start Guide - Serato DJ Edition”.

The latest version of the firmware and the “Quick Start Guide - Serato DJ Edition” can be acquired from the AlphaTheta support page.