Yamaha MG124CX Owner's Manual - Page 18

Reference Troubleshooting ■ 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, distorted, 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. * The MG124CX feature is described first, followed by the MG124C feature in brackets: MG124CX (MG124C). 18 MG124CX/MG124C Owner's Manual