Troubleshooting - Yamaha EM5014C Owner's Manual

Reference

Troubleshooting

■
Power doesn't come
on.
■
Power suddenly went
off.
■
Sound suddenly
stopped.
■
No sound.
■
Sound is faint, dis-
torted, or noisy.
■
An FCL lamp lights up
even though there is
no howling on the
channel.
■
No effect is applied.
■
The sound from the
speakers seems dull.
I want a more forceful
sound.
■
I want spoken words
to be heard more
clearly.
■
I want to output a mon-
itor signal through
speakers.
❑ 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 out-
let.
❑ 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.
❑ 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.
❑ 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.)
❑ Are the GAIN controls, channel faders, ST master fader, and AUX1/2 fad-
ers 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.
❑ 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.
❑ 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.
❑ Try turning on the YS Processing switch.
❑ Adjust the equalizers (HIGH, MID, and LOW knobs) on each channel.
❑ Adjust the graphic equalizers.
❑ 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.
❑ 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