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.
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| The unit fails to turn on when the | Power cord is not plugged in or is not | Firmly plug in the power cord. | |
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| STANDBY/ON switch is pressed, or turns | completely inserted. |
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| into the standby mode suddenly soon |
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| The IMPEDANCE SELECTOR switch on the | Set the switch to either end when this unit is | ||
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| after the power is turned on. | |||
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| rear panel is not set to either end. | in the standby mode. | ||
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| It happens that this unit does not work | There is an influence of strong external noise | Turn this unit into the standby mode and | |
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| normally. | (lightning, excessive static electricity, etc.) or | disconnect the AC power cord from the AC | |
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| a misoperation on this unit while using this | outlet. After about 30 seconds pass, connect | |
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| unit. | the power and operate this unit again. | |
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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 source is not selected. | Select an appropriate input source with the | |
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| input selector buttons. | |
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| The SPEAKERS switches are not set | Set the SPEAKERS switch which | |
Amplifier |
| properly. | corresponds to the speakers to be used to | ||
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| 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 | Turn this unit into the standby mode, and | |||
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| because of short circuit etc. | then turn on to reset the protection circuit. | |
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| The SLEEP timer has functioned. | Cancel the SLEEP timer function. | |
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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 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 | Connect the speaker wires in the correct | |
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| to this unit or speakers. | phase (+ and | |
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| Sound “hums”. | Incorrect cord connections. | Firmly connect the audio plugs. If the | |
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| problem 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 | |
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| record. | an MC cartridge. | through the MC head amplifier. | |
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| The volume level cannot be increased, or | The component connected to the REC | Turn the power to the component on. | |
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| sound is distorted. | terminals of this unit is turned 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 | antenna. | |
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| input 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 |
| 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. | |
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| the automatic tuning method. |
| Use a high quality directional FM antenna. | |
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| Previously preset stations can no longer | This unit has been unplugged for a long | Repeat the presetting procedure. | |
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| 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 | |
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| the automatic tuning method. |
| and 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 result from ligtning, fluorescent lamps, | Use an outdoor antenna and a ground wire. | ||
hissing noises. | motors, thermostats and other electrical | This will help somewhat but it is difficult to | |||
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| equipment. | eliminate all the 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. | |
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| (especially in the evening). |
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Remote control transmitter | The remote control transmitter does not | Direct sunlight or lighting (of an inverter type | Change the position of the main unit. | ||
work. | of fluorescent lamp etc.) is striking the |
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| remote control sensor of the main unit. |
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| The batteries of this remote control | Replace the batteries with new ones. | |||
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| transmitter are too weak. |
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Others | The sound is degraded when listening | This unit is in the standby mode. | 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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is connected with this unit. |
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