TYANO B7109F77DV10E4HR-2T-N, Service Engineer'S Manual

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2.0.4 Precautions
Components and electronic circuit boards can be damaged by
discharges of static electricity. Working on a system that is connected to
a power supply can be extremely dangerous. Follow the guidelines
below to avoid damage to FT77D-B7109 or injury to yourself.
 Ground yourself properly before removing the top cover of the
system. Unplug the power from the power supply and then touch a
safely grounded object to release static charge (i.e. power supply
case). If available, wear a grounded wrist strap. Alternatively,
discharge any static electricity by touching the bare metal chassis
of the unit case, or the bare metal body of any other grounded
appliance.

Avoid touching motherboard components, IC chips, connectors,
memory modules, and leads.
 The motherboard is pre-installed in the system. When removing
the motherboard, always place it on a grounded anti-static surface
until you are ready to reinstall it.
 Hold electronic circuit boards by the edges only. Do not touch the
components on the board unless it is necessary to do so. Do not
flex or stress circuit boards.
 Leave all components inside the static-proof packaging that they
ship with until they are ready for installation.
 After replacing optional devices, make sure all screws, springs, or
other small parts are in place and are not left loose inside the case.
Metallic parts or metal flakes can cause electrical shorts.