Troubleshooting, Read this first – Yamaha YH-E700B Wireless Noise-Cancelling Over-Ear Bluetooth Headphones (Black) User Manual
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Troubleshooting
Read this first
If this product does not operate normally while you are using it, first check the following.
[Search tag] #Q01 Troubleshooting
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Turn the power off and then on again.
If this does not solve the problem, initialize (factory reset) the product.
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“Initializing (performing a factory reset)” (p.43)
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Make sure that this product has been sufficiently charged.
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“Charging the headphones” (p.11)
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Update the firmware of this product to the latest version.
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“Updating the firmware” (p.45)
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Check the following items according to the trouble you are experiencing.
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“Power will not turn on” (p.36)
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“The product cannot be charged” (p.37)
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“The product does not operate or play back” (p.38)
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“No sound can be heard” (p.39)
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“Sound can only be heard from one headphone” (p.40)
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“Sound is not good or sounds strange” (p.41)
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“The sound is distorted, noisy or choppy” (p.42)
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“Initializing (performing a factory reset)” (p.43)
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Troubleshooting > Read this first