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Important Safety Precautions
Prior to shipment from the factory, JVC products are strictly inspected to conform with the recognized product safety and electrical codes of
the countries in which they are to be sold. However, in order to maintain such compliance, it is equally important to implement the following
precautions when a set is being serviced.
@ Precautions during Servicing
Locations
requiring
special
caution
are denoted
by labels and
10. Products using cathode ray tubes (CRTs)
inscriptions
on
the cabinet,
chassis and
certain
parts of the
product. When
performing
service, be sure to read and comply
with these and other cautionary notices appearing in the opera-
tion and service manuals.
Parts identified by the
/\ symbol and shaded (
) parts are
critical for safety.
Replace only with specified part numbers.
Note:
Parts
in this category
also
include
those
specified
to
comply with X-ray emission standards for products using
cathode
ray
tubes
and
those
specified
for compliance
with
various
regulations
regarding
spurious
radiation
emission.
Use specified internal wiring. Note especially:
1) Wires covered with PVC tubing
2) Double insulated wires
3) High voltage leads
. Use specified insulating materials for hazardous
live parts. Note
especially:
1) Insulation Tape
2) PVC tubing
3) Spacers
4) Insulation sheets for transistors
. When
replacing
AC
primary
side
components
(transformers,
power cords, noise blocking capacitors, etc.) wrap ends of wires
securely about the terminals before soldering.
'ire
Bo 47
Fig. 1
. Observe
that wires do not contact
heat producing
parts (heat-
sinks, oxide metal film resistors, fusible resistors, etc.)
. Check
that replaced wires do not contact sharp edged or pointed
parts.
. When
a power cord has been replaced, check
that 10—15 kg of
force in any direction will not loosen it.
Power cord
Fig. 2
9. Also check areas surrounding repaired locations.
In regard to such
products, the cathode
ray tubes themselves,
the
high voltage circuits, and related circuits are specified for
compliance with recognized codes pertaining to X-ray emission.
Consequently,
when
servicing these products, replace the cath-
ode
ray tubes
and
other
parts with
oniy the
specified parts.
Under
no
circumstances
attempt
to
modify
these
circuits.
Unauthorized
modification
can increase the high voltage value
and cause X-ray emission from the cathode ray tube.
. Crimp type wire connector
In such cases as when
replacing the power
transformer
in sets
where
the
connections
between
the
power
cord
and
power
transformer
primary
lead wires are performed using crimp type
connectors,
if replacing the connectors is unavoidable, in order
to
prevent
safety
hazards,
perform
carefully
and
precisely
according to the following steps.
1) Connector part number : E03830-001
2) Required tool : Connector crimping tool of the proper type
which wil! not damage insulated parts.
3) Replacement procedure
(1) Remove the old connector by cutting the wires at a point
close to the connector.
Important : Do not reuse a connector (discard it).
ao
Nl
4
Cut close to connector
Fig. 3
(2) Strip about
15 mm
of the insulation from the ends of the
wires.
If the wires are stranded, twist the strands to avoid
frayed conductors.
Fig. 4
(3) Align the lengths of the wires to be connected. Insert the
wires fully into the connector.
Metal sleeve
Connector
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