Reference
18 MG124CX/MG124C Owner’s Manual
Troubleshooting* The MG124CX feature is described first, followed by the MG124C feature in brackets: MG124CX (MG124C).
■Power doesn’t come
on.
❑Is the supplied power adaptor properly plugged into an appropriate AC
wall outlet?
❑Is the supplied power adaptor properly plugged into the mixer?
■No sound. ❑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.)
■Sound is faint, dis-
torted, or noisy.
❑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?
■No effect is applied.
(If you are using
MG124CX)
❑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.
■I want spoken words
to be heard more
clearly.
❑Be sure that the switches are ON.
❑Adjust the equalizers (HIGH, MID and LOW) on each channel.
■I want to output a
monitor signal
through speakers.
❑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.