Yamaha A-S301 Benutzerhandbuch - Seite 16

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TROUBLESHOOTING

Problem

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

cannot be increased,

or the sound is

distorted.

The sound is

degraded when

listening with

headphones

connected to a CD

player connected to

this unit.

The sound level is

low.

The volume level is

low while playing a

record.

Using the BASS,

TREBLE, BALANCE

and LOUDNESS

controls does not

affect the sound.

Cause

Playback has been stopped on the

connected component.

No appropriate input source has been

selected.

The SPEAKERS selector is not set

properly.

The output audio source setting on the

connected component is not PCM.

The automatic power down function has

activated.

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 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.

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 CD DIRECT function or the PURE

DIRECT function is turned on.

Remedy

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 BI-WIRING position.

Only PCM audio sources can be played via the

DIGITAL (OPTICAL/COAXIAL) jacks of this unit.

Set the output audio source of the connected

component to PCM.

Confirm that there are no other issues causing this

problem, and then turn this unit on again.

To turn off the AUTO POWER STANDBY function,

set the AUTO POWER STANDBY switch to OFF on

the rear panel.

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.

Turn on the power of the component.

Turn on the power of this unit.

Press MUTE 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.

Connect the turntable to the PHONO jacks.

Use a turntable equipped with an MM cartridge.

The CD DIRECT function or the PURE DIRECT

function must be turned off to use those controls.

See

page

9, 10

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