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 | ||
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| The unit fails to turn on when the | Power cord is not plugged in or is not completely | Firmly plug in the power cord. | ||
| STANDBY/ON switch is pressed, or | inserted. |
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| turns into the standby mode suddenly |
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| The IMPEDANCE SELECTOR switch on the rear | Set the switch to the right or the left end firmly. | |||
| soon after the power is turned on. | ||||
| panel is not set to the right or the left end firmly. |
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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 disconnect the | ||
| normally. | (lightning, excessive static electricity, etc.) or a | AC power cord from the AC outlet. After about 30 | ||
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| misoperation on this unit while using this unit. | seconds, connect the power and operate this unit again. | |
| No sound or no picture. | Incorrect output cord connections. | Connect the cords properly. If the problem persists, the | ||
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| cords may be defective. | |
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| Appropriate input source is not selected. | Select an appropriate input source with the input | |
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| selector buttons. | |
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| The SPEAKERS switches are not set properly. | Set the SPEAKERS switch which corresponds to the | |
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| 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 because of | Turn this unit into the standby mode, and then turn on | ||
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| short circuit etc. | to reset the protection circuit. | |
Amplifier |
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| The SLEEP timer has functioned. | Cancel the SLEEP timer function. | ||
Only one side speaker outputs the | Incorrect setting of the BALANCE control. | Adjust it to the appropriate position. | |||
sound. |
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Incorrect cord connections. | Connect the cords properly. If the problem persists, the | ||||
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| cords may be defective. | ||
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| Sound “hums”. | Incorrect cord connections. | Firmly connect the audio plugs. If the problem persists, | ||
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| the cords may be defective. | |
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| No connection from the turntable to the GND terminal. | Make the GND connection between the turntable and | |
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| this unit. | |
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| The volume level is low while playing a | The record is being played on a turntable with an MC | The player should be connected to the unit through the | ||
| record. | cartridge. | MC head amplifier. | ||
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| The volume level cannot be increased, | The component connected to the REC OUT terminals | Turn the power to the component on. | ||
| or sound is distorted. | of this unit is turned off. |
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| No sound from the rear speakers. | The sound output level to the rear speakers is set to | Raise the sound output level to the rear speakers. | ||
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| minimum. |
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| The monaural sound source is played in DOLBY PRO | Select another program suitable for the monaural sound | |
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| LOGIC or DOLBY PRO LOGIC ENHANCED mode. | source. | |
| No sound from the center speaker. | The sound output level to the center speaker is set to | Raise the sound output level to the center speaker. | ||
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| minimum. |
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| The center channel mode is in PHANTOM mode. | Select NORMAL or WIDE. | |
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| Incorrect sound field program selection. | Select the appropriate program. | |
| 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 antenna. | |
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| transmitter is too far away or the antenna input is poor. | Set the TUNING MODE button to the manual tuning | |
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| mode. | |
FM | There is distortion and clear reception | There is multipath interference. | Adjust antenna placement to eliminate multipath | ||
cannot be obtained even with a good |
| interference. | |||
FM antenna. |
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| A desired station cannot be tuned in | The station is too weak. | Use the manual tuning method. | ||
| with the automatic tuning method. |
| Use a high quality directional FM antenna. | ||
| Previously preset stations can no | This unit has been unplugged for a long period. | Repeat the presetting procedure. | ||
| longer be tuned in. |
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| A desired station cannot be tuned in | Weak signal or loose antenna connections. | Tighten the AM loop antenna connections and rotate it | ||
| with the automatic tuning method. |
| for best reception. | ||
AM |
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| Use the manual tuning method. | |
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There are continuous crackling and | Noises will result from lightning, fluorescent lamps, | Use an outdoor antenna and a ground wire. This will | |||
| hissing noises. | motors, thermostats and other electrical equipment. | help somewhat but it is difficult to eliminate all noise. | ||
| 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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Remote control transmitter | The remote control transmitter does not | Direct sunlight or lighting (of an inverter type of | Change the position of the main unit. | ||
work. | fluorescent 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 too | Replace the batteries with new ones. | ||
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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 |
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that are connected with this unit. |
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