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
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.
The power does not turn on.
The power turns off (standby mode) immediately.
The unit enters standby mode automatically.
No sound is coming from a specific speaker.
Another channel sound is coming from a specific
The protection circuitry has been activated three times consecutively.
When the unit is in this condition, the power indicator on the unit blinks.
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
An external device is connected to the TRIGGER (IN) jack.
The unit was turned on while a speaker cable was shorted.
The unit was shorted because the speaker terminals come into contact
with metal parts of the AV rack, etc.
The auto-standby function worked.
The protection circuitry has been activated because the volume of the
external device connected to the unit is too high.
The protection circuitry has been activated because the temperature
inside of the unit is too high.
The BAL/UNBAL switch setting is not correct.
The speakers connected to the CH.3 A/B terminals are turned off.
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.
The CH SELECTOR setting is not correct.
As a safety precaution, capability to turn on the power is disabled. Contact your nearest
Yamaha dealer or service center to request repair.
Disconnect the power cable from the AC wall outlet and plug it again.
Press down z (power) on the unit and then turn on the external device.
Twist the bare wires of each speaker cable firmly and reconnect to the unit and speakers
Keep enough space on the back of the unit (p.8).
To disable the auto-standby function, set the AUTO POWER STANDBY switch to "OFF"
Turn down the volume of the external device.
Install the unit in a well ventilated, place and allow enough ventilation space around the
Change the BAL/UNBAL switch setting so that it matches the connections (p.14).
Press SPEAKERS A/B to turn on the speakers (p.20).
If there is no problem with the connection, replace with another cable.
Change the CH SELECTOR setting so that it matches your speaker system (p.19).