TROUBLESHOOTING
Refer to the following tables when this unit does not function properly. If the problem you are experiencing is not listed or if the instruction does not help, contact the nearest authorized YAMAHA dealer or service center.
First, check if the microphone indicators light up. If the indicator is turned off, see “Q1: LED indicators do not light up”
below. Otherwise, consult “Q2: A problem in the communication audio” (page 22).
Q1: LED indicators do not light up
Problem | Cause | Remedy |
The microphone indicators do not | This unit is not turned on. | Check that the AC adapter and power cable |
light up. |
| are connected properly. |
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| If this unit has been turned off by pressing |
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| and holding MIC MUTE (page 4), pressing |
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| any key of this unit turns it on again. |
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| The power cable is not connected to the AC | Check that the power cable is connected to |
| outlet. | the AC outlet properly. |
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| The main or branch circuit breaker is shut | If the circuit breaker is tripped to “OFF”, set |
| off. | it to “ON”. |
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| If the circuit breaker is “ON”, set it to “OFF” |
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| then “ON” again. |
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| There is a power failure. | Wait until the power supply is restored. |
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| Power is not supplied to the AC outlet. | If another appliance can neither be turned on, |
| (Carry out the test by connecting another | have the power outlet or power wiring |
| electrical appliance to the AC outlet.) | serviced. |
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| If another appliance can be turned on, have |
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| this unit serviced. |
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| The microphones are muted (the MIC MUTE | Press MIC MUTE so that the MIC MUTE |
| LED lights up). | LED is turned off. |
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INFORMATION | ADDITIONAL |
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English
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