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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| SYMPTOM | CAUSE | REMEDY | |
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| 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. | |
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| switch is pressed, or turns off suddenly soon | inserted. |
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| after the power is turned on. |
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| The IMPEDANCE SELECTOR switch on the rear | Set the switch to the upper or the lower end exactly. | ||
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| panel is not set to the upper or the lower end |
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| exactly. |
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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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| 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 | |
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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 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 has functioned. | Cancel the SLEEP timer function. | |
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 persists, | |||
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| 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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| 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. | |
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| 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 | Raise the sound output level to the rear speakers. | |
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| to 0. |
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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 | Raise the sound output level to the center speaker. | |
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| to 0. |
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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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| 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 | Set the TUNING MODE button to the manual tuning | |
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| poor. | mode. | |
FM | 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. | |||
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| A desired station cannot be tuned in with the | The station is too weak. | Use the manual tuning method. | |
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| automatic tuning method. |
| Use a high quality directional FM antenna. | |
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| Previously preset stations can no longer be | This unit has been unplugged for a long period. | Repeat the presetting procedure. | |
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| tuned in. |
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| A desired station cannot be tuned in with the | Weak signal or loose antenna connections. | Tighten the AM loop antenna connections and | |
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| automatic tuning method. |
| rotate it for best reception. | |
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| Use the manual tuning method. | |
AM |
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There are continuous crackling and hissing | Noises will result from ligtning, 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. | |
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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 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 listening with the | The power to this unit is off. | Turn the power to this unit on. | ||
headphones connected to the compact disc |
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player or cassette deck that are connected with |
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this unit. |
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