Yamaha EP-E70A - Problem Still Not Resolved (Customer Support)

Problem Still Not Resolved (Customer Support)
If the trouble still cannot be solved, please contact us for product support as shown below.
(
For customers within Japan
Please contact the store where you purchased this product, or the Product Support Center as listed in
the “User Guide (Basic).”
(
For customers outside of Japan
Please contact your nearest authorized Yamaha dealer or service center.
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Troubleshooting > Problem Still Not Resolved (Customer Support)