Safety
Considerations
Your
Attention,
Please
Warnings, cautions
and
notes are used
through
out
this
document
to
alert
the
user
to
conditions
of inlportance.
They
are used as follows:
• WARNINGS relate
to
activity which, if
not
properly performed, could result in injury
to
personnel
or
loss
of
life.
• CAUTIONS relate
to
activity, which if
not
properly performed, could result in
damage
to
or
destruction
of
equipment.
In
this
case, injury
to
personnel
is
typically
not
a concern.
• NOTES provide information
that
will help
understand
situations
and
better
prepare
peo-
ple in accomplishing
the
job.
Examples:
WARNING
The power supply presents a hazard to personnel when it is energized
and exposed. Extreme care must be taken when connecting a voltmeter
probes to the test points. Accidental bridging
of
the
+5
volt supply
to ground
by
rings or other jewelry can cause severe personal injury.
De-energize the equipment
by
turning off the unit and removing the
power cord before connecting or removing test probes.
CAUTION
The electronic assemblies in these products are susceptible to damage
by
electro-static discharge. Extreme care must be used when handling
printed circuit assemblies. Handle printed circuit assemblies only when
grounded to an anti-static workstation.
NOTE
Hewlett-Packard
supports
field repair only
to
the
assembly level.
The
fault
is
diagnosed
to
the
assembly
that
is
causing
the
problem.
That
assembly
is
then
replaced with a new
or
rebuilt one.
vii
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