Precautions during Servicing H. When a power cord has been replaced, check that
5~6 kg of force in any direction will not loosen it.
A. Parts identified by the ( # ) symbol are critical for
safety. I. Also check areas surrounding repaired locations.
J. Use care that foreign objects (screws, solder drop-
Replace only with part number specified.
lets, etc.) do not remain inside the set.
B. In addition to safety, other parts and assemblies K. Crimp type wire connector
are specified for conformance with regulations ap-
plying to spurious radiation. These must also beWhen replacing the power transformer in sets
replaced only with specified replacements.where the connections between the power cord
and power transformer primary lead wires are per-
Examples: RF converters, RF cables, noise block-
ing capacitors, and noise blocking filters, etc.formed using crimp type connectors, in order to
prevent shock hazards, perform carefully and pre-
C. Use specified internal wiring. Note especially:cisely the following steps.
1) Wires covered with PVC tubingReplacement procedure
2) Double insulated wires 1) Remove the old connector by cutting the wires at
3) High voltage leadsa point close to the connector.
D. Use specified insulating materials for hazardousImportant: Do not re-use a connector (discard it).
live parts. Note especially: 2) Strip about 15 mm of the insulation from the ends
1) Insulation Tapeof the wires. If the wires are stranded, twist the
strands to avoid frayed conductors.
2) PVC tubing
3) Spacers 3) Align the lengths of the wires to be connected. In-
sert the wires fully into the connector.
4) Insulators for transistors.
4) Use the crimping tool to crimp the metal sleeve at
E. When replacing AC primary side componentsthe center position. Be sure to crimp fully to the
(transformers, power cord, etc.), wrap ends ofcomplete closure of the tool.
wires securely about the terminals before solder-
L. When connecting or disconnecting the VCR con-
ing.nectors, first, disconnect the AC plug from AC sup-
F. Observe that the wires do not contact heat produc-
ing parts (heatsinks, oxide metal film resistors, fus-ply socket.
ible resistors, etc.)
G. Check that replaced wires do not contact sharp
edged or pointed parts.
1-2-3SFTY_2 |
ACEC
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