Yamaha emx62m User Manual

Troubleshooting

The following table describes the possible malfunctions of this demvice, and the appropriate actions to be 
taken in each case.

Sound is no 
longer out-
put from the 
speakers.

The POWER 
indicator is lit.

The load on the amplifier of this 
device was too great, and 

the protec-

tion circuit for the amplifier 

has 

operated. Possible reasons for the 
excessive load are an excessive level 
setting in the channel control section 
or main section, insufficient ventila-
tion, or insufficient load impedance 
of the connected speakers.

Please wait. When the device cools off, normal operation 
will resume automatically. However, please check the fol-
lowing three points to prevent the problem from recurring.
• If the level setting is excessive, lower it to the nominal 

level. You can refer to the peak level indicators of the 
main section when doing so.

• If the device is not ventilated sufficiently, refer to the cau-

tions given at the beginning of this manual and take 
appropriate measures to insure adequate ventilation.

• If the load impedance (including a short) is too low, refer 

to the section on rear panel (page 14) and change the 
connections so that the impedance is correct.

Other

Connections between devices have 
come loose.

Inspect the connections, and correct any faulty connec-
tions.

Other

The device may have malfunctioned. Please contact your 
dealer.

Unbalanced 
sound out-
put from the 
speakers

No high range 
is heard from 
the speakers.

The speaker’s protection circuit has 
been activated due to excessive input 
signals.

Turn off the power to the EMX62M, or lower the volume 
level. The EMX62M will return to its normal operation in 
several seconds. Then, turn on the power to the unit or 
raise the volume level and check to see if the high range is 
audible. Maintain the level so that the protection circuit 
will not be activated.

Q: The built-in effect is not effective.

A: The ON switch in the DIGITAL EFFECT section may not be 

turned on. Or, you have adjusted the EFFECT control in the 
Channel section or the MAIN EFFECT RTN control.

Q: The monitoring sound from the speakers is not powerful 

enough relative to the level of the input sound.

A: The equalizer LOW control for each channel may be set to 

negative values.

Q: The stereo output from the synthesizer has been routed 

to the Super Hi-Z jack of channel 6, but the monitoring 
sound is not stereo.

A: You can use Super Hi-Z (or LINE) 1 and 2 jacks at the same 

time. 
However, they are internally routed into a mono channel, and 
therefore the signals from 1 and 2 jacks are output as mono 
signal.

Q: The signal is sent from the EFFECT OUT jack to the 

connected effect processor. Then the effect sound is 
returned to the AUX IN jack. However, no signal is input 
to the mixer.

A: The AUX IN control in the MAIN section may not be rotated to 

right.

Q: An external powered speaker is connected to the MON-

ITOR-OUTPUT jack. 
However, the signal is not sent to the speaker even 
when the MASTER control in the MONITOR section is 
turned.

A: The MONITOR controls for input channels may not have been 

adjusted.

Q: Can the Low-Z jack and the Hi-Z jack be used at the 

same time?

A: You cannot use the Low-Z jack and the Hi-Z jack for the same 

channel at the same time.

Q: Can a single speaker be connected to the mixer?

A: Yes. Use a speaker with an impedance of 4-8 ohms.