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 completely | Firmly plug in the power cord. |
| switch is pressed. | inserted. |
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| No sound. | Incorrect output cord connections. | Connect the cords properly. If the problem persists, |
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| the cords may be defective. |
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| Appropriate input selector button is not pressed. | Press the appropriate input selector button |
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| corresponding to the input source. |
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| The sound suddenly goes off. | The protection circuit has activated because of | Turning the unit off and then on will reset the |
Amplifier |
| short circuit etc. | protection circuit. |
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Only one side speaker outputs the sound. | Incorrect setting of the BALANCE control | Adjust it to the appropriate position. | |
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| Incorrect cord connection. | Connect the cord properly. If the problem persists, | |
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| the cables may be defective. | |
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| Sound “hums”. | Incorrect cord connections. | Firmly connect the audio plugs. If the problem |
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| persists, the cord may be defective. |
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| No connection from the turntable to the GND | Make the GND connection between the turntable |
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| terminal. | and this unit. |
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| The volume level is low while playing a record. | The record is being played on a turntable with an | The player should be connected to the receiver |
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| MC cartridge. | through the MC head amplifier. |
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| The volume level cannot be increased, or | The power to the component connected to the REC | Turn the power to the component on. |
| sound is distorted. | OUT terminals of this unit is off. |
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| FM stereo reception is noisy. | Because of the characteristics of FM stereo | Check the antenna connections. |
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| broadcasts, this is limited to cases where the | Try using a multiple element FM antenna. |
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| transmitter is too far or the antenna input is poor. |
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FM | There is distortion and clear reception cannot | There is multipath interference. | Adjust antenna placement to eliminate multipath |
be obtained even with a good FM antenna. |
| interference. | |
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| A desired station cannot be tuned in with Auto | The station is too weak. | Use Manual tuning mode. |
| tuning. |
| Use high quality directional FM antenna. |
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| A desired station cannot be tuned in with Auto | Weak signal or loose antenna connections. | Use Manual tuning mode. |
| tuning. |
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| Tighten the AM loop antenna connections and | |
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| rotate it for best reception. |
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AM | There are continuous crackling and hissing | Noises will result from ligtning, fluorescent lamps, | Use an outdoor antenna and a ground wire. This |
noises. | motors, thermostats and other electrical equipment. | will help somewhat but it is difficult to eliminate all | |
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| noises. | |
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| There are buzzing and whining noises | A television set is being used nearby. | Relocate this unit away from the TV. |
| (especially in the evening). |
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| The remote control transmitter does not work. | Direct sunlight or lighting (of an inverter type of | Change position of the main unit. |
Remote control transmitter |
| flourescent lamp etc.) is striking the remote control |
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| sensor of the main unit. |
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| The batteries of this remote control transmitter are | Replace the batteries with new ones. | |
| too weak. |
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Others | The sound is degraded when monitoring is | The power to this unit is off. | Turn the power to this unit on. |
performed by using the headphones connected |
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to the compact disc player or cassette deck |
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which are connected with this unit. |
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