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 | CAUSE | REMEDY | ||
| The unit fails to turn on when the POWER | Power cord is not plugged in or is not | Firmly plug in the power cord. | ||
| switch is pressed. | completely inserted. |
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| No sound. | Incorrect output cord connections. | Connect the cords properly. If the problem | ||
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| persists, the cords may be defective. | |
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| Appropriate input selector button is not | Press the appropriate input selector button | ||
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| pressed. | corresponding to the input source. | ||
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| The SPEAKERS switches are not set properly. | Set the SPEAKERS switch that corresponds to | ||
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| the speakers to be used to the ON position. | |
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| Speaker connections are not secure. | Secure the connections. | ||
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| The sound suddenly goes off. | The protection circuit has been activated | Turning the unit off and then on will reset the | ||
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| because of short circuit etc. | protection circuit. | ||
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| The SLEEP timer functioned. | Cancel the SLEEP timer function. | ||
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Amplifier | 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 connections. | Connect the cords properly. If the problem | |||
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| persists, the cords may be defective. | ||
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| There is a lack of bass, and no ambience. | The + and – wires are connected in reverse at | Connect the speaker wires in the correct | ||
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| this unit or speakers. | phase (+ and | ||
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| Sound “hums”. | Incorrect cord connections. | Firmly connect the audio plugs. If the problem | ||
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| persists, the cords may be defective. | |
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| No connection from the turntable to the GND | Make the GND connection between the | ||
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| terminal. | turntable and this unit. | ||
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| Sound level is low. | The LOUDNESS control is functioning. | Set the LOUDNESS control to the FLAT | ||
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| position. | |
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| The volume level is low while playing a | The record is being played on a turntable with | The player should be connected to the unit | ||
| record. | an MC cartridge. | through an MC head amplifier (available | ||
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| separately). | |
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| The volume level cannot be increased, or | The power to the component connected to the | Turn the power to the component on. | ||
| sound is distorted. | REC 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 high quality directional FM | ||
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| transmitter is too far away or the antenna input | antenna. | ||
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| is poor. | Set the TUNING MODE button to the manual | ||
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| tuning mode. | |
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FM | There is distortion and clear reception | There is multipath interference. | Adjust antenna placement to eliminate | ||
cannot be obtained even with a good FM |
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| multipath interference. | ||
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| antenna. |
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| A desired station cannot be tuned in with | The station is too weak. | Use the manual tuning method. | ||
| the automatic tuning method. |
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| Use a high quality directional FM antenna. | |
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| Previously preset stations can no longer | The tuner has been unplugged for a long | Repeat the presetting procedure. | ||
| be tuned in. | period. |
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| A desired station cannot be tuned in with | Weak signal or loose antenna connections. | Tighten the AM loop antenna connections and | ||
| the automatic tuning method. |
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| rotate it for best reception. | |
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| Use the manual tuning method. | |
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AM | There are continuous crackling and | Noises will result from ligtning, fluorescent | Use an outdoor antenna and a ground wire. | ||
hissing noises. | lamps, motors, thermostats and other electrical | This will help somewhat but it is difficult to | |||
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| equipment. | eliminate all noise. | ||
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| There are buzzing and whining noises | A television set is being used nearby. | Relocate this unit away from the TV. | ||
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| The remote control transmitter does not | Direct sunlight or lighting (of an inverter type of | Change the position of the main unit. | ||
Remote control transmitter | work. | flourescent lamp etc.) is striking the remote |
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| control sensor of the main unit. |
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| The batteries of this remote control transmitter | Replace the batteries with new ones. | |||
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| are too weak. |
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Others | The sound is degraded when listening | The power to this unit is off. | Turn the power to this unit on. | ||
with the headphones connected to the |
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compact disc player or cassette deck that |
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are connected with this unit. |
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