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.
| SYMPTOM | CAUSE | REMEDY | |
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| No power even if the POWER switch is | AC supply lead is not plugged in. | Plug in the AC supply lead. | |
| pressed. |
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| It happens that this system does not | There is an influence of strong external | Turn this system into the standby mode and | |
| work normally. | noise (lightning, excessive static | disconnect the AC power cord from the AC outlet. | |
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| electricity, etc.) or a misoperation on this | After about 30 seconds have passed, connect the | |
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| system while using this system. | power and operate this system again. | |
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| No sound from one speaker | Loose speaker connections. | Connect properly. | |
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| No sound from speakers. | Internal protection circuit is functioning. | Unplug the AC supply lead from the wall AC outlet, | |
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| and then plug in again. | |
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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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GENERAL |
| The sound output level to the rear | Raise the sound output level to the rear speakers. | |
| speakers is set to minimum. |
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| No DSP program is selected. | Select the appropriate program. | ||
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No sound from the center speaker. | 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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| Incorrect DSP program selection. | Select the appropriate program. | |
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| No DSP 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, | |
| external unit connected with this |
| the cords may be defective. | |
| system. |
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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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| 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 obstructions or | Check antenna connections. | |
| broadcasts. | excessive distance from broadcasting station. |
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| Install a | |||
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| Stereo broadcasts are noisy and ST | Insufficient antenna input. | Install an antenna appropriate for the electric field | |
TUNER | 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) broadcasts. | flourescent lights, electric motors or | by grounding MW/LW (AM) loop antenna. | |
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| 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. | |
| 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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| Playback will not begin even if disc is | Disc is upside down. | Load disc label side up. | |
PLAYER | loaded. |
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Disc is dirty. | Clean disc. | |||
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No sound. | Input selector setting is incorrect. | Press the CD input selector button. | ||
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CD | Sound stops suddenly (always at same | Disc is dirty. | Clean disc. | |
spot). |
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| Volume is set too high. | Lower volume. | ||
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CONTROL | Remote control doesn’t work. | Batteries are dead. | Replace batteries. | |
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| Remote control is too far away or is being | Use within 6 m and 60° radius. | ||
| used at incorrect angle. |
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| Direct sunlight or lighting (of an inverter | Change position of the main unit. | ||
REMOTE |
| type of flourescent lamp etc.) is striking |
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| the remote control sensor of the main unit. |
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TV functions strangely when the remote | Remote control is being used near TV set | Relocate this unit away from the TV or cover TV’s | ||
| control is used. | with a remote control sensor. | remote control sensor. | |
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