1. Is [CD, PHONO] (the input selector switch) set to the proper position?

Switch [CD, PHONO] (the input selector switch) to the channel's input source. For details, see "Basic Operations (Mixer Section)" in the operating instructions.

2. Are [TRIM], the channel faders, the crossfader and [MASTER LEVEL] set to the proper positions? Set [TRIM], the channel faders, the crossfader and [MASTER LEVEL] to the proper positions. For details, see "Basic Operations (Mixer Section)" in the operating instructions.

3. Are the connected components and amplifiers properly set? Set the external input selection and volume on the components and amplifiers properly.

4. Are the connection cables properly connected? Connect the connection cables properly. For details, see "Connecting the Input/Output Terminals" in the operating instructions.

5. Are the terminals or plugs dirty? Wipe off any dirt from the terminals or plugs.