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 or no picture. | 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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| The MUTING key is ON. | First, turn the volume control to full left. Then, turn | |
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| the MUTING key OFF with the remote control | |
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| transmitter and adjust the volume. | |
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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 suddenly goes off. | The protection circuit has been activated because | Turning the unit off and then on will reset the | |
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| of short circuit etc. | protection circuit. | |
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| The SLEEP timer 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 persists, | |
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| the cords may be defective. | |
Amplifier |
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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 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 unit through | |
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| MC cartridge. | 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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| No sound from the rear speakers. | The sound output level to the rear speakers is set | Turn up the sound output level with the REAR | |
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| to 0. | LEVEL control. | |
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| The monaural sound source is played in DOLBY | Select another program suitable for the monaural | |
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| PRO LOGIC or DOLBY PRO LOGIC ENHANCED | sound source. | |
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| mode. |
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| No sound from the center speaker. | The sound output level to the center speaker is set | Turn up the sound output level with the CENTER | |
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| to 0. | LEVEL control. | |
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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. | |
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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 | 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 away or the antenna input is poor. |
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FM |
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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. | |
| A desired station cannot be tuned in with Auto | The station is too weak. | Use Manual tuning mode. | |
| tuning. |
| Use a high quality directional FM antenna. | |
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| A desired station cannot be tuned in with Auto | Weak signal or loose antenna connections. | Tighten the AM loop antenna connections and | |
| tuning. |
| rotate it for best reception. | |
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| Use Manual tuning mode. | |
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AM | There are continuous crackling and hissing | Noises will result from lightning, 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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| 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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controlRemote transmitter | The remote control transmitter does not work. | Direct sunlight or lighting (of an inverter type of | Change the position of the main unit. | |
| 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. | |
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| 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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