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5.4.2
PRECAUTIONS FOR TROUBLESHOOTING
Be cautious
when testing
IC
and
transistor circuits.
Although
they have almost unlimited
life
when
used properly, they are very
vulnerable
to
damage when accidentally shorted
or
connected
to
incorrect voltages.
Be sure
not to short any terminals when making measurements.
If a
probe should
slip, for example, and
short out
a
bias or supply
point, it will very likely damage IC's,
transistors or diodes.
Do
not remove any
components while
the line cord
is
connected
to the
AC outlet.
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Troubleshooting
