Troubleshooting - Yamaha MG124C Owner's Manual

Reference

Troubleshooting

■
Power doesn't come
on.
■
No sound.
■
Sound is faint, dis-
torted, or noisy.
■
No effect is applied.
(If you are using
MG124CX)
■
I want spoken words
to be heard more
clearly.
■
I want to output a
monitor signal
through speakers.
* The MG124CX feature is described first, followed by the MG124C feature in brackets: MG124CX (MG124C).
18
MG124CX/MG124C Owner's Manual
❑ Is the supplied power adaptor properly plugged into an appropriate AC
wall outlet?
❑ Is the supplied power adaptor properly plugged into the mixer?
❑ Are microphones, external devices, and speakers connected correctly?
❑ Are the ON switch and ST switch of the channels you are using turned
ON?
❑ Are the channel GAIN controls, Channel fader, STEREO OUT master
fader and GROUP 1-2 fader set to appropriate levels?
❑ Are the MONITOR switch and 2TR IN switch set properly?
❑ Are your speaker cables connected properly, or are they shorted?
❑ If the above checks do not identify the problem, call Yamaha for service.
(Refer to the page 71 for a list of service centers.)
❑ Are the channel GAIN controls, Channel fader, STEREO OUT master
fader and GROUP 1-2 fader set to appropriate levels?
❑ Are two different instruments connected to the XLR-type and phone jacks,
or to the phone and RCA pin jacks on one channel? Please connect to
only one of these jacks on each channel.
❑ Is the input signal from the connected device set to an appropriate level?
❑ Are you applying the effects at an appropriate level?
❑ Are microphones connected to the MIC input jacks on channels 1 to 7/8?
❑ If you are using condenser microphones, is the PHANTOM +48 V switch
turned ON?
❑ Check that the EFFECT control on each channel is correctly adjusted.
❑ Be sure that the internal effect unit's ON switch is turned ON.
❑ Be sure that the EFFECT PARAMETER control and EFFECT RTN fader
are correctly adjusted.
❑ Be sure that the
switches are ON.
❑ Adjust the equalizers (HIGH, MID and LOW) on each channel.
❑ Connect a powered speaker to the AUX (AUX1) jack* and turn the PRE
switch on each channel ON. Then adjust the output signal by using the
AUX (AUX1) controls on each channel and the Master SEND control.