Yamaha EMX5014C Owner's Manual - Page 31

Reference Troubleshooting ■ Power doesn't come on. ❑ Be sure that you are using the supplied power cord, and that it is correctly connected to the AC IN connector and plugged into a working power outlet. ■ Power suddenly went off. ❑ Check whether the vents at the front and rear of the unit are blocked. The EMX unit may overheat if the vents are blocked. If the unit overheats, the power may automatically go off. Wait for the unit to cool down, and then turn the power back on. ■ Sound suddenly stopped. ❑ Check whether the vents at the front and rear of the unit are blocked. The EMX unit may overheat if the vents are blocked. If the unit overheats, it may cut off the output to the internal amp until things cool down. ■ No sound. ❑ Are microphones, external devices, and speakers connected correctly? ❑ Are the GAIN controls, channel faders, ST master fader, and AUX1/2 fad- ers set to appropriate levels? ❑ Check that the speaker cables are not shorted. ❑ If the above checks do not identify the problem, call Yamaha for service. (Refer to page 36 for a list of Yamaha dealers.) ■ Sound is faint, distorted, or noisy. ❑ Are the GAIN controls, channel faders, ST master fader, and AUX1/2 faders set to appropriate levels? ❑ Check that the [26 dB] switches on channels 1 to 6 are set correctly. ❑ On channels 1 to 6, be sure that you have not connected to both INPUT A and INPUT B. (On each of these channels you may use one input or the other, but not both.) ❑ Is the input signal from the connected device set to an appropriate level? ❑ You may be applying excessive digital effect. Check your effect settings. ■ An FCL lamp lights up even though there is no howling on the channel. ❑ Input of a continuous sound (from a CD player or other such source) may cause the lamp to come on even in the absence of howling. ■ No effect is applied. ❑ Check that the EFFECT knob on each channel is correctly adjusted. ❑ Be sure that the internal effector's ON switch is turned on. ❑ Check that the EFFECT RTN fader is correctly adjusted. ■ The sound from the speakers seems dull. I want a more forceful sound. ❑ Try turning on the YS Processing switch. ❑ Adjust the equalizers (HIGH, MID, and LOW knobs) on each channel. ❑ Adjust the graphic equalizers. ■ I want spoken words to be heard more clearly. ❑ Be sure that the YS Processing switch is turned off. ❑ Adjusting the equalizers (HIGH, MID, and LOW knobs) on each channel. ❑ Adjusting the graphic equalizers. ❑ Check that the switches (high pass filters) for the relevant channels are turned ON as appropriate. ■ I want to output a monitor signal through speakers. ❑ Connected a powered speaker to the AUX1/2 jacks. Then adjust the AUX1/2 signal by adjusting the channel AUX1/2 controls and the AUX1 and AUX2 faders. ❑ If you want to send the monitor signal to SPEAKERS A jack, set the POWER AMP switch to the AUX1/MONO position. (Note that in this case the A jack will output the monitor signal, and the B jack will output a mix of the stereo L and R signals.) EMX5014C Owner's Manual 31