If your 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, 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 | AC supply lead is not plugged in. | Plug in the AC supply lead. |
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| STANDBY/ON switch is pressed, or |
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| turns into the standby mode suddenly |
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| soon after the power is turned on. |
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| It happens that this unit does not work | There is an influence of strong external | Turn this unit into the standby mode and disconnect |
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| normally. | noise (lightning, excessive static | the AC power cord from the AC outlet. After about 30 |
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| electricity, etc.) or a misoperation on this | seconds have passed, connect the power and |
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| unit while using this unit. | operate this unit again. |
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| The sound suddenly goes off. | The protection circuit has been activated | Turn this unit into the standby mode, and then turn |
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| because of short circuit etc. | on to reset the protection circuit. |
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| The SLEEP timer has functioned. | Cancel the SLEEP timer function. |
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| No sound from one speaker | Loose speaker connections. | Connect properly. |
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| No sound from speakers. | Speaker connections are not secure. | Secure the connections. |
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| No sound from the rear speakers. | One rear speaker connection is loose or | Connect it properly. |
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| bad. |
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| The sound output level to the rear | Raise the sound output level to the rear speakers. |
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| speakers is set to minimum. |
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GENERAL |
| No sound field program is selected. | Select the appropriate program. | |
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No sound from the center speaker. | The center channel mode is in PHANTOM | Select NORMAL mode. | ||
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| The sound output level to the center | Raise the sound output level to the center speaker. | |
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| speaker is set to minimum. |
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| mode. |
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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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| No sound (or no picture) from an | Incorrect cord connections. | Connect the cords properly. If the problem persists, |
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| external unit connected with this unit. |
| the cords may be defective. |
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| Input source selection is not proper. | Make a proper input source selection. |
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| Can’t set timer. | Current time is not set. | Set current time. |
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| This unit will not operate properly. | The internal microcomputer has been | Unplug the AC supply lead from the wall AC outlet, |
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| frozen by an external electric shock | and then plug in again after about one minute. |
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| (lightning, excessive static electricity, etc.) |
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| or power supply with low voltage. |
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| The volume level cannot be increased, | The component connected to the REC | Turn the power to the component on. |
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| or sound is distorted. | OUT terminals of this unit is turned off. |
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| The sound is degraded when listening | This unit is in the standby mode. | Turn the power to this unit on. |
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| with the headphones connected to the |
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| compact disc player or tape deck that |
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| are connected with this unit. |
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| Excessive static in FM broadcasts. | Interference from starting motor of nearby | Position the FM antenna as high and as far away |
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| car. | from nearby roads as possible. Connect using a |
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| coaxial cable. |
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| Interference from thermostat of nearby | |
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| electrical appliance. |
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| Noise increases during stereo | Antenna input is too weak due to | Check antenna connections. |
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| broadcasts. | obstructions or excessive distance from |
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| Install a | ||
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| broadcasting station. | |
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| Stereo broadcasts are noisy and | Insufficient antenna input. | Install an antenna appropriate for the electric field |
TUNER |
| STEREO indicator blinks on and off. |
| strength of your area. |
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| Cannot select preset stations. | Preset memory has been erased. | Reprogram memory presets. | |
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| Buzzing or static during AM (LW or | Interference from source such as lightning, | Problem is difficult to eliminate but can be lessened |
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| MW) | flourescent lights, electric motors or | by grounding MW/LW (AM) loop antenna. |
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| broadcasts. | thermostat of nearby electrical appliance. |
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| TV or microprocessor is being used | Move away from TV or microprocessor. |
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| nearby. |
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| AM (LW or MW) broadcast sensitivity is | Radio signal is weak or antenna is not | Properly connect MW/LW (AM) loop antenna. |
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| poor. | properly connected. |
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| Change orientation of MW/LW (AM) loop antenna. | ||
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| Install an external MW/LW (AM) antenna. |
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