Bang & Olufsen Beoplay A9 3rd Generation, Руководство по обслуживанию

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How to service 1.3
Warnings when handling
Static electricity
Static electricity may damage the product.
Static-protective field service kit
A static-protective field service kit must always be used when the product is
disassembled or modules are being handled, since the internal electronics are very
sensitive to static electricity.
Follow the instructions in the Service Manual and use the ESD-mat for both old
and new modules.
When mains voltage on the product is required, remove the connection between
the product and the ESD-mat. This is important to avoid getting injured by mains
voltage.
STATIC ELECTRICITY
MAY DESTROY THE
PRODUCT
ESD
ESD-Mat
Waste of Electrical and Electronic Equipment (WEEE)
Electrical and electronic equipment, parts and batteries marked with this symbol
must not be disposed of with normal household wastage; all electrical and
electronic equipment, parts and batteries must be collected and disposed of
separately.