TROUBLESHOOTING

If the unit fails to operate normally, check the following points to determine whether the fault can be corrected by the simple measures suggested. If it cannot be corrected, or if the fault is not listed in the SYMPTOM column, disconnect the power cord and contact your authorized YAMAHA dealer or service center for help.

SYMPTOM

CAUSE

REMEDY

The unit fails to turn on when the POWER

Power cord is not plugged in or is not

Firmly plug in the power cord.

switch is pressed.

completely inserted.

 

 

 

 

No sound.

Incorrect output cord connections.

Connect the cords properly. If the problem

 

 

persists, the cords may be defective.

 

 

 

 

Appropriate input source is not selected.

Select an appropriate input source with the

 

 

INPUT selector.

 

 

 

 

Speaker connections are not secure.

Secure the connections.

 

 

 

The sound suddenly goes off.

The protection circuit has activated because

Turning the unit off and then on will reset the

 

of short circuit etc.

protection circuit.

 

 

 

Only one side speaker outputs the sound.

Incorrect setting of the BALANCE control.

Adjust it to the appropriate position.

 

 

 

 

Incorrect cord connections.

Connect the cords properly. If the problem

 

 

persists, the cords may be defective.

 

 

 

There is a lack of bass, and no ambience.

The + and – wires are connected in reverse

Connect the speaker wires in the correct

 

at the amplifier or speakers.

phase (+ and –).

 

 

 

Sound “hums”.

Incorrect cord connections.

Firmly connect the audio plugs. If the

 

 

problem persists, the cords may be defective.

 

 

 

 

No connection from the turntable to the GND

Make the GND connection between the

 

terminal.

turntable and this unit.

 

 

 

Sound level is low.

The LOUDNESS control is functioning.

Set the LOUDNESS control to the FLAT

 

 

position.

 

 

 

Using the BASS, TREBLE, BALANCE,

The PURE DIRECT switch is ON.

The PURE DIRECT switch must be switched

LOUDNESS controls and SUBSONIC

 

OFF to use those controls.

FILTER switch (AX-570 only) does not

 

 

affect the tone.

 

 

 

 

 

The remote control transmitter does not

Direct sunlight or lighting (of an inverter type

Change position of the main unit.

work.

of flourescent lamp etc.) is striking the

 

 

remote control sensor of the main unit.

 

 

 

 

The distance or range within which the

The batteries of this remote control

Replace the batteries with new ones.

remote control transmitter can be used

transmitter are too weak.

 

decreases.

 

 

 

 

 

12