APPENDIX
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.
■ GeneralSYMPTOM | CAUSE | REMEDY | Refer to | |
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The unit fails to turn on | The power cord is not connected or the plug is | Firmly connect the power cord. | 16 | |
when STANDBY/ON is | not completely inserted. |
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pressed, or enters in the |
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The IMPEDANCE SELECTOR switch on the | Set the switch fully to the right or left position | 16 | ||
standby mode soon after | ||||
rear panel is not fully set to the right or left | when the unit is in the standby mode. |
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the power has been |
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position. |
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turned on. |
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The unit does not work | The internal microcomputer has been frozen by | Set the unit in the standby mode and disconnect | — | |
normally. | an external electric shock (lightning, excessive | the AC power cord from the AC power outlet. |
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| static electricity, etc.) or by a power supply with | After about 30 seconds have passed, connect |
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| low voltage. | the power and operate the unit again. |
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No sound and/or no | Incorrect input or output cable connections. | Connect the cables properly. If the problem | 12, 13 | |
picture. |
| persists, the cables may be defective. |
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| An appropriate input source has not been | Select an appropriate input source with INPUT | 19 | |
| selected. | or TAPE/MD MON / EXT. DECODER (or the |
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| input selector buttons). |
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| The speaker connections are not secure. | Secure the connections. | 14 | |
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| SPEAKERS have not been set properly. | Set SPEAKERS corresponding to the speakers | 19 | |
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| in use to the ON position. |
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| Digital signals other than PCM audio and the | Play a source whose signals this unit can | — | |
| signals encoded with Dolby Digital which this | reproduce. |
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| unit cannot reproduce are being input to this unit |
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| by a |
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The sound suddenly | The protection circuit has been activated | Set the unit in the standby mode and then turn | — | |
goes off. | because of a short circuit, etc. | on to reset the protection circuit. |
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| The SLEEP timer has functioned. | Turn on the power, and play the source again. | 40 | |
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Only the speaker on one | Incorrect cable connections. | Connect the cables properly. If the problem | 14 | |
side can be heard. |
| persists, the cables may be defective. |
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| Incorrect setting of BALANCE. | Adjust it to the appropriate position. | 20 | |
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No sound from the effect | The sound effect is off. | Press EFFECT to turn it on. | 22 | |
speakers. |
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A Dolby Surround or Dolby Digital decoding | Select another DSP program. | 25 | ||
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| DSP program is being used with material not |
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| encoded with Dolby Surround or Dolby Digital. |
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No sound from the | The sound output level of the center speaker is | Raise the level of the center speaker. | 38 | |
center speaker. | set to minimum. |
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| “CENTER SP” in the SET MENU is set to the | Select the LRG or SML position. | 35 | |
| NONE position. |
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| Incorrect DSP program is selected. | Select the appropriate program. | 23, 24, 25 | |
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| The source encoded with Dolby Digital does not |
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| have a center channel signal. |
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No sound from the rear | The output level of the rear speakers is set to | Raise the output level of the rear speakers. | 38 | |
speakers. | minimum. |
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| A monaural source is being played with the PRO | Select another DSP program suitable for the | 25 | |
| LOGIC/Normal or PRO LOGIC/ENHANCED | monaural source. |
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| program. |
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APPENDIX
English
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