Yamaha A-S300 Посібник користувача - Сторінка 18

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TROUBLESHOOTING

Problems

No sound.

The sound suddenly

goes off.

Only the speaker on

one side can be

heard.

There is a lack of

bass and no

ambience.

A "humming" sound

can be heard.

The volume level is

low while playing a

record.

The volume level

cannot be increased,

or the sound is

distorted.

The sound is

degraded when

listening with the

headphones

connected to the CD

player or the tape

deck connected to

this unit.

The sound level is

low.

Possible Causes

Sound is muted.

Incorrect cable connections.

Playback has been stopped on the

connected component.

No appropriate input source has been

selected.

The SPEAKERS selector is not set

properly.

The protection circuitry has been activated

because of a short circuit, etc.

This unit has become too hot.

The automatic power down function has

turned this unit off.

Incorrect cable connections.

Incorrect setting for the BALANCE

control.

The + and – wires are connected in

reverse at the amplifier or the speakers.

Incorrect cable connections.

No connection from the turntable to the

GND terminal.

The turntable is connected to the jacks

other than the PHONO jacks.

The record is being played on a turntable

with an MC cartridge.

The component connected to the LINE 2

REC or LINE 3 REC jacks of this unit is

turned off.

This unit is turned off or is in standby

mode.

Sound is muted.

The loudness control function is

operating.

Solutions

Press MUTE button on the remote control or rotate

the VOLUME control.

Connect the stereo cable for audio units and the

speaker wires properly. If the problem persists, the

cables may be defective.

Turn the component on and start playback.

Select an appropriate input source with the INPUT

selector on the front panel (or one of the INPUT

selector buttons on the remote control).

Set the corresponding SPEAKERS selector to A, B or

A+B position.

Check that the IMPEDANCE SELECTOR setting is

correct.

Check that the speaker wires are not touching each

other or shorting out against the rear panel of this

unit, and then turn this unit on again.

Reconsider the location where this unit is installed.

Make sure the openings on the top panel are not

blocked.

Confirm that there are no other issues causing this

problem, and then turn this unit on again.

Connect the cables properly. If the problem persists,

the cables may be defective.

Set the BALANCE control to the appropriate

position.

Connect the speaker wires to the correct + and –

phase.

Connect the audio plugs firmly. If the problem

persists, the cables may be defective.

Make the GND connection between the turntable and

this unit.

Connect the turntable to the PHONO jacks.

Use a turntable equipped with an MM cartridge.

Turn on the power of the component.

Turn this unit on.

Press MUTE button on the remote control or rotate

the VOLUME control.

Turn down the volume, set the LOUDNESS control

to the FLAT position, and then adjust the volume

again.

Refer to

page

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