Safety Precautions - OKIDATA OKIMATE 20 Technical Service Data

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 sen-
sitive 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 commercially
available
discharging
wrist strap device.
This should be removed
prior to applying
power
to
the
unit
under
test.
5.
Use
a grounded-tip, low voltage
soldering
iron.
6.
Use an
isolation (times
10)
probe on scope.
7.
Do
not
remove
or
install Boards,
Floppy
Disk
Drives, printers, or
other peripherals with
Computer AC
power
On.
8.
Do
not use
freon-propelled sprays. These
can generate
electrical charges
sufficient to
damage
semiconductor
devices.
9.
This
Computer
is
equipped
with a
grounded
three-pronged
AC
plug. This plug
must
fit in-
to a
grounded
AC
power
outlet.
Do
not defeat the
AC
plug safety
feature.
10.
Periodically examine
the
AC
power
cord
for
damaged
or cracked
insulation.
11.
The Computer
cabinet
is
equipped
with vents
to
prevent heat
build-up. Never
block,
cover, or obstruct these
vents.
12. 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.
13.
Never expose
the
Computer
to water.
If
exposed
to
water
turn the
unit
Off.
Do
not place
the
computer
near possible water sources.
14.
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.
15.
Do
not allow anything
to rest
on
AC
power
cord.
16.
Unplug
AC
power
cord from
outlet before cleaning Computer.
17.
Never use
liquids or aerosols
directly
on the
Computer
cabinet.
Spray on
cloth
and
then
apply
to
the
Computer
cabinet.
Make
sure the
Computer
is
disconnected from
the
AC
power
line.
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