Sony PCG-F420 Primary User Manual page 82

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Electrostatic discharge (ESD) can damage memory modules and
other components. Perform the procedures described below only at
an ESD workstation. If such a station is not available, do not work in
a carpeted area, and do not handle materials that produce or hold
static electricity (cellophane wrappers, for example). Ground yourself
by maintaining contact with an unpainted metal portion of the
chassis while performing the procedure.
❑
Do not open the memory module package until you are ready to
install the module. The package protects the module from ESD.
❑
Use the special bag for preventing ESD or use aluminum foil when
you store the memory module.
Shut down your computer and disconnect all peripheral devices,
such as your printer.
Unplug the computer and remove the battery packs.