AX-FIGD
Safety Precautions
1.
The design
of this
product
contains special hardware and many
circuits and components
specially
for safety
purposes.
For
continued
protection,
no
changes should be made to the
original design
unless authorized in writing
by
the manufacturer.
Replacement
parts
must
be identical
to those used in
the original
circuits. Services should be
performed
by
qualified persorlnel
only.
2. Alterations
of the
design or circuitry
of
the
product
should not be made.
Any design
alterations
of
the
product
should
not
be made. Any
design alterations
or additions will
void the manufacturer's
warranty
and will further
relieve the manufacture
of responsibility
for
perconal
injury
or
property
damage resulting therefrom.
3. Many
electrical
and mechanical
parts
in the
products
have
special safety-related
characteristics. These
characteristics
are often not
evident
from
visual inspection nor
can
the
protection
afforded by them necessarily
be
obtained by using replacement
components
rated
for higher voltage,
wattage,
etc.
Replacement
parts
which have these
special safety
characteristics
are identified
in the Parts List
of Service Manual.
Electrical
components
having
such
features
are identified
by shading on the schematics
and by
(A)
on the Parts
List in the
Service Manual. The
use
of a substitute repalcement
which does not have the
same
safety characteristics
as the recommended
replacement
parts
shown in the Parts
List of
Service
Manual may
create shock, fire,
or other hazards.
4.
The leads in
the
products
are routed
and dressed with ties,
clamps, tubings,
barrierc and
the like
to
be separated from
live
parts,
high
temperature
parts,
moving
parts
and/or sharp
edges for the
prevention
of electric shock
and
fire
hazard. When
service is required,
the
original lead routing
and
dress should
be observed, and it
should be
confirmed that they
have
been returned to
normal, after re-assembling.
5. Leakage
currnet
check
(Electrical
shock hazard testing)
After
re-assembling
the
product,
always
perform
an
isolation
check
on the exposed metal
parts
of
the
product
(antenna
terminals,
knobs, metal
cabinet, screw heads,
headphone
jack,
contorl
shafts, etc.) to be
sure the
product
is
safe to
operate without
danger of electrical
shock.
Do
not use
a
line
isolation
transformer
during this
check.
o Plug
the AC line
cord
directly into the
AC outlet.
Using a
"Leakage
Current Tester",
measure
the leakage
current from
each
exposed metal
parts
of the cabinet,
particularly
any
exposed metal
part
having
a return
path
to
the chassis, to
a known
good
earth
ground.
Any leakage
current must
not
exceed 0.5mA AC
(r.m.s.).
o Alternate
check method
Plug
the AC
line cord
directly into
the AC
outlet. Use an
AC voltmeter having,
I,OOO
ohms
per
volt
or more
sensitivity in
the following
manner.
Connect
a
1,500Q
10 W
resistor
paralleled
by
a 0.15
pF
AC-type
capacitor
between
an exposed metal
part
and a
known
good
earth
ground.
Measure
the
AC voltage
across the resistor
with
the AC
voltmeter.
Move the
resistor
connection
to
each exposed
metal
part,
particularly
any
exposed metal
part
having
a return
path
to
the
chassis, and
meausre
the AC voltage
across the resistor.
Now,
reverse
the
plug
in the
AC
outlet and
repeat
each measurement.
Any voltage
measured
must
not
exceed
0.75 V AC
(r.m.s.).
This
corresponds
to
0.5 mA AC
(r.m.s.).
AC VOLTMETER
(Having
1000
ohms/volts,
or
more
sensitivity.)
1s000
10w
Place this
probe
on
each exposed
metal
part.
Good
earth
ground
lspF
AC TY
1.
This
equipment has
been
designed and
manufactured
to meet
international
safety
standards.
2. lt is
the legal
responsibility
of the repairer
to
ensure that
these
safety standards
are
maintained.
3. Repairs must
be made
in accordance
with
the relevant
safety
standards.
4. lt is
essential that
safety
critical
components are replaced
by approved
parts.
5. lf mains
voltage
selector is
provided,
check setting
for local voltage.
1-2
Warning
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