Table of Contents
Advertisement
SAFETY PRECAUTIONS
1.
Use
an
isolation
transformer
for servicing.
2.
Maintain
AC
line
voltage
at
rated
input.
3.
Remove
AC
power
from
the
Computer
before
servicing or
installing electrostatically
sensitive devices.
Examples
of
typical
ES
devices
are integrated
circuits
and semiconductor
"chip"
components.
4.
Use extreme
caution
when
handling the
printed
circuit
boards.
Some
semiconductor
devices
can be
damaged
easily
by
static electricity.
Drain
off
any
electrostatic
charge on your
body
by touching a
known
earth
ground.
Wear
a
commercial-
ly
available
discharging
wrist strap device.
This
should be
removed
prior to
applying
power
to
the
unit
under
test.
Use
a grounded-tip,
low voltage soldering
iron.
Use
an
isolation
(times
10)
probe
on
scope.
Do
not
remove
or
install
board, floppy disk
drives, printers,
or
other peripherals with
power
On.
Do
not
use
freon-propelled sprays.
These
can generate
electrical
charges
sufficient to
damage
semiconductor
devices.
The Computer
cabinet
is
equipped
with vents
to
prevent heat
build-up.
Never
block, cover, or
obstruct
these,
vents.
10.
Instructions
should be
given, especially to children, that
objects
should
not
be dropped
or
pushed
into
the vents
of
the
cabinet.
This could
cause shock
or
equipment damage.
11.
Never expose
the
Computer
to
water.
If
exposed
to
water, turn the
unit
off.
Do
not place the
Computer
near possible
water sources.
12.
Never
leave
the
Computer
unattended
or
plugged
into
the
AC
outlet
for
long periods
of time.
Remove
AC
plug
from
AC
outlet
during
lightning
storms.
13.
Never use
liquids or
aerosols
directly
on
the
Computer. Spray on
cloth
and
then apply
to
the
Computer
cabinet.
Make
sure the
Computer
is
disconnected from
the
AC
power
line.
18
Advertisement
Table of Contents
