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 the | Firmly plug in the power cord. |
| STANDBY/ON is pressed, or set in | plug is not completely inserted. |
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| the standby mode suddenly soon |
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| The IMPEDANCE SELECTOR switch | Slide the switch fully to the upper or | |
| after the power has been turned on. | ||
| on the rear panel is not fully set at the | lower end. | |
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| upper or lower end. |
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| The unit does not work normally. | The internal microcomputer has been | Set the unit in the standby mode and |
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| frozen by an external electric shock | disconnect the AC power cord from the |
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| (lightning, excessive static electricity, | AC outlet. After about 30 seconds have |
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| etc.) or by a power supply with low | passed, connect the power cord and |
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| voltage. | operate the unit again. |
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| No sound or no picture. | Incorrect output cord connections. | Connect the cords properly. If the |
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| problem persists, the cords may be |
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| defective. |
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| Appropriate program source has not | Select an appropriate program source |
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| been selected. | by INPUT. |
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| SPEAKERS have not been set | Set SPEAKERS corresponding to the |
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| properly. | speakers in use to the ON position. |
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| The speaker connections are not | Secure the connections. |
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| secure. |
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| The sound suddenly goes off. | The protection circuit has been | Set the unit in the standby mode and |
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| activated because of a short circuit, etc. | then switch on again to reset the |
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| protection circuit. |
Amplifier | sound. |
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Incorrect cord connections. | Connect the cords properly. If the | ||
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| The SLEEP timer has functioned. | Cancel the SLEEP timer. |
| Only one side speaker outputs | Incorrect setting of BALANCE. | Adjust it to the appropriate position. |
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| problem persists, the cords may be |
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| defective. |
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| A “humming” sound can be heard. | Incorrect cord connections. | Firmly connect the audio plugs. If the |
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| problem persists, the cords may be |
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| defective. |
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| No connection from the turntable to the | Make the GND connection between the |
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| GND terminal. | turntable and this unit. |
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| The volume level is low while | The record is being played on a | The turntable should be connected to |
| playing a record. | turntable with an MC cartridge. | the unit through the MC head amplifier. |
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| The volume level cannot be | The component connected to the REC | Turn on the power to the component. |
| increased, or the sound is distorted. | OUT terminals of this unit is in the |
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| standby mode. |
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| No sound from the effect speakers. | The sound effect is set off. | Press EFFECT to turn it on. |
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| A Dolby Surround decoding program is | Use a different sound field program. |
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| being used with material not encoded |
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| with Dolby Surround. |
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| No sound from the rear speakers. | The sound output level of the rear | Raise the sound output level of the rear |
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| speakers is set to minimum. | speakers. |
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| A monaural sound source is being | Select another sound field program |
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| played in the DOLBY PRO LOGIC or | suitable for the monaural sound source. |
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| DOLBY PRO LOGIC ENHANCED |
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| program. |
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