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. | |
| POWER switch is pressed. | inserted. |
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| No sound or no picture. | 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 is not pressed. | Press the appropriate input selector corresponding | |
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| to the input source. | |
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| The sound from all speakers or | The protection circuit has activated because of short | All speakers: Check the speaker cords, turn the | |
| only from the front speakers | circuit or over power, etc. | unit off and then on. Operate the unit after | |
| suddenly goes off. |
| reducing the volume. | |
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| Front speakers: Check the speaker cords and | |
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| reduce the volume. | |
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| Amplifier | 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 | |||
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| persists, the cords 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 cords may be defective. | |
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| The volume level is low while | The record is being played on a turntable with an MC | The player should be connected to the unit through | |
| playing a record. | cartridge. | the MC head amplifier. | |
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| No sound from the rear speakers. | The sound output level of the rear speakers is 0. | Turn up the sound output level with the REAR level | |
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| control. | |
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| The monaural sound source is played in DOLBY PRO | Select another program suitable for the monaural | |
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| LOGIC or ENHANCED mode. | sound source. | |
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| No sound from the center speaker. | The sound output level of the center speaker is 0. | Turn up the sound output level with the CENTER | |
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| level control. | |
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| The center mode is in PHANTOM mode. | Select NORMAL or WIDE. | |
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| Incorrect sound field program selection. | Select the appropriate program. | |
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| No sound field program is selected. |
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| FM stereo reception is noisy. | Because of the characteristics of FM stereo broadcasts, | Check the antenna connections. | |
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| this is limited to cases where the transmitter is too far | Try using a multiple element FM antenna. | |
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| away or the antenna input is poor. |
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FM |
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There is distortion and clear | There is multipath interference. | Adjust antenna placement to eliminate multipath | ||
reception cannot be obtained even |
| interference. | ||
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| with a good FM antenna. |
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| A desired station cannot be tuned | The station is too weak. | Use Manual tuning mode. | |
| in with Auto tuning. |
| Use a high quality directional FM antenna. | |
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| A desired station cannot be tuned | Weak signal or loose antenna connections. | Tighten the AM loop antenna connections and | |
| in with Auto tuning. |
| rotate it for best reception. | |
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| Use Manual tuning mode. | |
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AM | There are continuous crackling and | Noises will result from ligtning, fluorescent lamps, | Use an outdoor antenna and a ground wire. This | |
hissing noises. | motors, thermostats and other electrical equipment. | will help somewhat but it is difficult to eliminate all | ||
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| noise. | |
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| There are buzzing and whining | A television set is being used nearby. | Move the television away. | |
| noises (especially in the evening). |
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Remote control transmitter | The remote control transmitter | Direct sunlight or lighting (of an inverter type of | Change the position of the main unit. | |
does not work. | flourescent lamp etc.) is striking the remote control |
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| sensor of the main unit. |
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The distance or range within which | The batteries of this remote control transmitter are too | Replace the batteries with new ones. | ||
the remote control transmitter can | weak. |
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be used decreases. |
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| The sound is degraded when | Power cord of this unit is not plugged in. | Plug in the power cord. | |
| Others | monitoring is performed by using |
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the headphones connected to the |
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compact disc player or cassette |
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deck which are connected with this |
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| unit. |
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