Owner's Manual

46
Troubleshooting
Refer to the table below if the unit fails to function properly. If the problem is not listed, or if the symptoms persist after following the instructions provided, turn off the unit,
disconnect the unit from the electrical outlet, and contact your nearest authorized Yamaha dealer or service center.
General
Problem Cause Solution
The unit turns off as soon as it is powered on.
The unit does not operate properly.
The power cord is not properly connected. Connect the power cord firmly.
The unit cannot be operated.
The internal microcomputer has frozen due to an external
electrical shock (lightning, excessive static electricity, etc.) or a
drop in power supply voltage.
Press and hold = on the unit for at least eight seconds. The unit
will be in standby mode.
No sound comes from the unit.
An input source has not been properly selected. Use the input source buttons to select an input source (
&
p. 7).
The volume level is set to the minimum level or volume is muted. Increase the volume.
The transmitting mode is applied to the Bluetooth function. Apply the receiving mode to the Bluetooth function (
&
p. 13).
The external device is not firmly connected to the AUX jack.
Confirm that the external device is firmly connected to the unit’s
jack. If there are no problems with connection, check that cables
may be damaged.
Noise is heard.
The audio cable used to connect the unit and external device may
be damaged.
Confirm the audio cable connection. If there are no problems with
connection, use another audio cable.
The unit suddenly turns off.
The sleep timer has been set (
&
p. 33).
Turn on the unit and play the source again.
The auto power standby function is activated. (
&
p. 9).
The protection function has been activated.
After confirming that there are no abnormalities, which may
include strange noises emitted by the unit or a unit that is
unusually warm or hot to the touch, press = for at least
8 seconds. The unit will enter standby mode.
Breaks, distortion, or unusual noise can be
heard.
The volume (especially the bass) is too high. Decrease the volume, or adjust the bass (
&
p. 29).