Yamaha Troubleshoot Your AX Series Stereo Amplifiers Effectively

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TROUBLESHOOTING

Refer to the chart below if this unit does not function properly. If the problem you are experiencing is not listed below or if the instructions below do not help, set this unit to the standby mode, disconnect the power cord, and contact the nearest authorized YAMAHA dealer or service center.

General

Problem

Cause

Remedy

Refer to

page

 

 

 

 

 

 

 

This unit fails to turn

The power supply cord is not connected or

Connect the power supply cord firmly.

on.

the plug is not completely inserted.

 

 

 

 

 

 

 

 

The impedance setting is incorrect.

Set the impedance to match your speakers.

7

 

 

 

 

 

The protection circuitry has been activated

Check that the speaker wires are not touching each

8

 

because of a short circuit, etc.

other and then turn the power of this unit back on.

 

 

 

 

 

 

 

The IMPEDANCE SELECTOR switch on

Set the IMPEDANCE SELECTOR switch to either

7

 

the rear panel is not set to either end.

end when the power of this unit is turned off.

 

 

 

 

 

 

 

This unit has been exposed to a strong

Set this unit to the standby mode, disconnect the

 

external electric shock (such as lightning

power supply cord, plug it back in after 30 seconds,

 

or strong static electricity).

then use it normally.

 

 

 

 

 

No sound

Incorrect input or output cable

Connect the cables properly. If the problem persists,

8

 

connections.

the cables may be defective.

 

 

 

 

 

 

 

No appropriate input source has been

Select an appropriate input source with the INPUT

11

 

selected.

selector on the front panel (or one of the input

 

 

selector buttons on the remote control).

 

 

 

 

 

 

The TAPE MONITOR function is turned

Turn off the TAPE MONITOR function.

4

 

on.

 

 

 

 

 

 

 

 

 

The SPEAKERS A/B switches are not set

Set the corresponding SPEAKERS A or B switch to

11

 

properly.

the ON position.

 

 

 

 

 

 

 

Speaker connections are not secure.

Secure the connections.

8

 

 

 

 

The sound suddenly

The protection circuitry has been activated

Check that the IMPEDANCE SELECTOR setting is

7

goes off.

because of a short circuit, etc.

correct.

 

 

 

 

 

 

 

Check that the speaker wires are not touching each

8

 

 

other and then turn the power of this unit back on.

 

 

 

 

 

 

 

Only the speaker on

Incorrect cable connections.

Connect the cables properly. If the problem persists,

8

one side can be

 

the cables may be defective.

 

 

heard.

 

 

 

Incorrect setting for the BALANCE

Set the BALANCE control to the appropriate

13

 

 

control.

position.

 

 

 

 

 

 

There is a lack of bass

The + and – wires are connected in

Connect the speaker wires to the correct + and –

8

and no ambience.

reverse at the amplifier or the speakers.

phase.

 

 

 

 

 

A “humming” sound

Incorrect cable connections.

Connect the audio plugs firmly. If the problem

8

can be heard.

 

persists, the cables may be defective.

 

 

 

 

 

 

 

No connection from the turntable to the

Make the GND connection between the turntable and

8

 

GND terminal.

this unit.

 

 

 

 

 

 

The volume level is

The record is being played on a turntable

The turntable should be connected to this unit through

low while playing a

with an MC cartridge.

the MC head amplifier.

record.

 

 

 

 

 

 

 

The volume level

The component connected to the TAPE

Turn on the power of the component.

 

cannot be increased,

OUT or the MD OUT terminals of this

 

or the sound is

unit is turned off.

 

 

 

distorted.

 

 

 

 

 

 

 

16

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Contents AX-497/AX-397 Important Safety Instructions Serial NoFCC Information for US customers For Canadian Customers Pour LES Consommateurs CanadiensContents Features Supplied AccessoriesAX-497 AX-397Power Standby indicatorControls and Functions Front panelOpening and closing the front panel Door Controlling other components Remote controlControlling this unit Handling the remote control Asia and General models only Impedance Selector switchRear panel Connecting speakers and other components ConnectionsTurntable Tuner Tape deck, etc VCR, etcConnecting the banana plug Connecting the power supply cord Connecting the AC power supply cordPress Power on the front panel inward to the on position Indicator of the selected input source lights upPlaying and Recording Playing a sourceStandby indicator lights up Adjusting the tonal quality Recording a source to a tape or an MD Begin recording on the tape deck or the MD recorder Troubleshooting GeneralRemote control Specifications Power SectionControl Section GeneralWG02700

AX-397, AX-497 specifications

The Yamaha AX-497 and AX-397 are two notable integrated amplifiers from Yamaha's renowned hi-fi audio lineup, designed to deliver exceptional sound quality and performance for audiophiles and music enthusiasts alike. While both models share a strong foundation, they exhibit distinct features and technologies that cater to different listening preferences.

The Yamaha AX-497 is the more advanced of the two, boasting a power output of 80 watts per channel at 8 ohms, which provides ample power for driving various speakers effectively. The AX-497 utilizes Yamaha's proprietary ToP-ART (Total Purity Audio Reproduction Technology) design, which focuses on preventing signal degradation and ensuring a clean, natural sound. This model features a discrete amplifier configuration, providing lower distortion levels and a more dynamic soundstage.

One of the standout features of the AX-497 is its comprehensive tone control system. Users can finely adjust the bass, treble, and balance, allowing for personalized sound tailored to individual preferences and room acoustics. Additionally, the AX-497 includes a direct input for bypassing tone controls during critical listening sessions, effectively providing an uncolored sound reproduction.

On the other hand, the Yamaha AX-397 offers a slightly reduced power output of 60 watts per channel at 8 ohms, making it suitable for smaller speaker systems and listening environments. Despite this lower output, the AX-397 still maintains an impressive sound quality, thanks to a similar ToP-ART design that ensures purity in audio reproduction.

The AX-397 is equipped with a high-quality phono stage, allowing for a seamless connection with turntables, which is becoming increasingly popular among vinyl enthusiasts. Additionally, it features a simple yet elegant user interface with easy-to-use controls for volume, input selection, and tone adjustments.

Both models utilize a robust build quality, reflecting Yamaha's commitment to durability and longevity. The sleek design of the amplifiers complements any audio setup, adding a touch of sophistication.

In summary, the Yamaha AX-497 and AX-397 integrated amplifiers are distinguished by their power outputs, features, and target users. The AX-497 is ideal for those seeking higher power and extensive control over sound, while the AX-397 suits casual listeners who appreciate quality sound in a more compact form. Regardless of the choice, both amplifiers exemplify Yamaha's dedication to delivering superior audio experiences.