HP J1473A Manuel Du Propriétaire page 6

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Rackmount Console Switch Owner's Manual
INSTRUCTIONS: The exclamation point within an equilateral triangle
is intended to alert the user to the presence of important operating and
maintenance (servicing) instructions in the literature accompanying
the appliance.
DANGEROUS VOLTAGE: The lightning fl ash with arrowhead symbol,
within an equilateral triangle, is intended to alert the user to the presence
of uninsulated "dangerous voltage" within the product's enclosure that
may be of suffi cient magnitude to constitute a risk of electric shock
to persons.
PROTECTIVE GROUNDING TERMINAL: A terminal which must be
connected to earth ground prior to making any other connections to
the equipment.
POWER ON: This symbol indicates the principal on/off switch is in
the on position.
POWER OFF: This symbol indicates the principal on/off switch is in
the off position.