Yamaha AV-90PY Owner's Manual download pdf (Page 23)

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

The unit fails to turn on when the POWER switch is

pressed.

No sound or no picture.

There is no sound or no picture when any input

selector is pressed.

The sound suddenly goes off.

Only one side speaker outputs the sound.

Sound “hums”.

There is a lack of bass, and no ambience.

The volume level is low while playing a record.

No sound from the rear speakers.

No sound from the center speaker.

There is a howling sound when playing records at

high volume.

The remote control transmitter does not work.

The distance or range within which the remote

control transmitter can be used decreases.

The sound is degraded when monitoring is

performed by using the headphones connected to

the compact disc player or cassette deck which are

connected with this unit.

CAUSE

Power cord is not plugged in or is not completely

inserted.

Incorrect output cord connections.

The MUTING switch is ON.

Appropriate input selector is not pressed.

The input wires are not connected securely.

The speaker systems are not connected correctly.

The protection circuit has activated because of

short circuit etc.

Incorrect setting of the BALANCE control

Incorrect cord connection.

Incorrect cord connections.

No connection from the turntable to the GND

terminal.

The + and – wires are connected in reversed at the

amplifier or speakers.

The record is being played on a turntable with an

MC cartridge.

The sound output level of the rear speakers is 0.

The monaural sound source is played in the

DOLBY PRO LOGIC or ENHANCED.

The sound output level of the center speaker is 0.

The center mode is in the PHANTOM.

Incorrect sound field program selection.

No sound field program is selected.

The turntable and the speakers are too close

together, or the turntable is not located on a firm

surface.

Direct sunlight or lighting (of an inverter type of

flourescent lamp etc.) is striking the remote control

sensor of the main unit.

The batteries of this remote control transmitter are

too weak.

Power cord of this unit is not plugged.

REMEDY

Firmly plug in the power cord.

Connect the cords properly. If the problem persists,

the cords may be defective.

First, turn the volume control to the full left. Then,

turn the MUTING switch OFF with the remote

control transmitter and adjust the volume.

Press the appropriate input selector corresponding

to the input source.

Connect them securely.

Check and secure the connections.

Turning the unit off and then on will reset the

protection circuit.

Adjust it to the appropriate position.

Connect cords properly. If the problem persists, the

cords may be defective.

Firmly connect the audio plugs. If the problem

persists, the cords may be defective.

Make the GND connection between the turntable

and this unit.

Connect the speaker wires in the correct phase (+

and –).

The player should be connected to the unit through

the MC head amplifier.

Turn up the sound output level with the REAR

LEVEL key.

Select another program suitable for the monaurel

sound source.

Turn up the sound output level with the CENTER

LEVEL key.

Select the NORMAL or WIDE.

Select the appropriate program.

Change the location of the turntable or the

speakers.

Change position of the main unit.

Replace the batteries with new ones.

Plug in the power cord.

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Yamaha AV-90PY Owner's Manual Page 23

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