Yamaha MX-A5200 Owner's Manual Page 22

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22 En Appendix
Troubleshooting
Refer to the table below when the unit does not function properly.
If the problem you are experiencing is not listed below or if the instructions below do not help, turn off the unit, disconnect the power cable, and contact the nearest authorized Yamaha dealer or service
center.
First, check the followings:
a The power cables of the unit and other devices (such as a pre-amplifier) are connected to AC wall outlets securely.
b The unit and other devices (such as a pre-amplifier) are turned on.
c The connectors of each cable are securely inserted in to jacks on each device.
Problem Cause Remedy
The power does not turn on.
The protection circuitry has been activated three times consecutively.
When the unit is in this condition, the power indicator on the unit blinks.
As a safety precaution, capability to turn on the power is disabled. Contact your nearest
Yamaha dealer or service center to request repair.
The internal microcomputer has frozen, due to an external electric shock
(such as lightning or excessive static electricity) or to a drop in the power
supply voltage.
Disconnect the power cable from the AC wall outlet and plug it again.
An external device is connected to the TRIGGER (IN) jack. Press down z (power) on the unit and then turn on the external device.
The power turns off (standby mode) immediately.
The unit was turned on while a speaker cable was shorted.
Twist the bare wires of each speaker cable firmly and reconnect to the unit and speakers
(p.15).
The unit was shorted because the speaker terminals come into contact
with metal parts of the AV rack, etc.
Keep enough space on the back of the unit (p.8).
The unit enters standby mode automatically.
The auto-standby function worked.
To disable the auto-standby function, set the AUTO POWER STANDBY switch to “OFF”
(p.17).
The protection circuitry has been activated because the volume of the
external device connected to the unit is too high.
Turn down the volume of the external device.
The protection circuitry has been activated because the temperature
inside of the unit is too high.
Install the unit in a well ventilated, place and allow enough ventilation space around the
unit (p.8).
No sound. The BAL/UNBAL switch setting is not correct. Change the BAL/UNBAL switch setting so that it matches the connections (p.14).
No sound is coming from a specific speaker.
The speakers connected to the CH.3 A/B terminals are turned off. Press SPEAKERS A/B to turn on the speakers (p.20).
The XLR balanced cable (or RCA unbalanced cable) connecting the unit
and pre-amplifier is defective, or the speaker cable connecting the unit
and speaker is defective.
If there is no problem with the connection, replace with another cable.
Another channel sound is coming from a specific
speaker.
The CH SELECTOR setting is not correct. Change the CH SELECTOR setting so that it matches your speaker system (p.19).
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