Important Safety Precautions - Marantz BD7003 Service Manual

IMPORTANT SAFETY PRECAUTIONS

IMPORTANT SAFETY PRECAUTIONS
IMPORTANT SAFETY PRECAUTIONS
Product Safety Notice Product Safety Notice
Some electrical and mechanical parts have special Some electrical and mechanical parts have special
safety-related characteristics which are often not safety-related characteristics which are often not evi-
dent from visual inspection, nor can the protection evident from visual inspection, nor can the protection
they give necessarily be obtained by replacing them they give necessarily be obtained by replacing them
with components rated for higher voltage, wattage, with components rated for higher voltage, wattage,
etc. Parts that have special safety characteristics are etc. Parts that have special safety characteristics are
identified by a ! on schematics and in parts lists. Use identified by a # on schematics and in parts lists. Use
of a substitute replacement that does not have the of a substitute replacement that does not have the
same safety characteristics as the recommended same safety characteristics as the recommended
replacement part might create shock, fire, and/or other
replacement part might create shock, fire, and/or other
hazards. The Product's Safety is under review continu- hazards. The Product's Safety is under review
ously and new instructions are issued whenever continuously and new instructions are issued
whenever appropriate. Prior to shipment from the appropriate. Prior to shipment from the factory, our
factory, our products are carefully inspected to confirm products are carefully inspected to confirm with the
recognized product safety and electrical codes of the with the recognized product safety and electrical
countries in which they are to be sold. However, in
codes of the countries in which they are to be sold.
However, in order to maintain such compliance, it is order to maintain such compliance, it is equally impor-
tant to implement the following precautions when a set equally important to implement the following
is being serviced. precautions when a set is being serviced.
Precautions during Servicing
Precautions during Servicing
A. Parts identified by the # symbol are critical for
A. Parts identified by the ! symbol are critical for
safety. Replace only with part number specified.
safety. Replace only with part number specified.
B. In addition to safety, other parts and assemblies
B. In addition to safety, other parts and assemblies
are specified for conformance with regulations
are specified for conformance with regulations
applying to spurious radiation. These must also be
applying to spurious radiation. These must also be
replaced only with specified replacements.
replaced only with specified replacements.
Examples: RF converters, RF cables, noise
Examples: RF converters, RF cables, noise block-
blocking capacitors, and noise blocking filters, etc.
ing capacitors, and noise blocking filters, etc.
C. Use specified internal wiring. Note especially:
C. Use specified internal wiring. Note especially:
1) Wires covered with PVC tubing
1)Wires covered with PVC tubing
2) Double insulated wires
2)Double insulated wires
3) High voltage leads
3)High voltage leads
D. Use specified insulating materials for hazardous
D. Use specified insulating materials for hazardous
live parts. Note especially:
live parts. Note especially:
1) Insulation tape
1)Insulation tape
2) PVC tubing
2)PVC tubing
3) Spacers
3)Spacers
4)Insulators for transistors
4) Insulators for transistors
E. When replacing AC primary side components
E. When replacing AC primary side components
(transformers, power cord, etc.), wrap ends of
(transformers, power cord, etc.), wrap ends of
wires securely about the terminals before solder-
wires securely about the terminals before
ing.
soldering.
F. Observe that the wires do not contact heat produc-
F. Observe that the wires do not contact heat
ing parts (heatsinks, oxide metal film resistors, fus- producing parts (heat sinks, oxide metal film
ible resistors, etc.). resistors, fusible resistors, etc.).
G. Check that replaced wires do not contact sharp
G. Check that replaced wires do not contact sharp
edges or pointed parts.
edges or pointed parts.
H. When a power cord has been replaced, check that
H. When a power cord has been replaced, check that
5 - 6 kg of force in any direction will not loosen it.
5 - 6 kg of force in any direction will not loosen it.
I. Also check areas surrounding repaired locations. I. Also check areas surrounding repaired locations.
J. Be careful that foreign objects (screws, solder
J. Use care that foreign objects (screws, solder drop-
droplets, etc.) do not remain inside the set.
lets, etc.) do not remain inside the set.
K. When connecting or disconnecting the internal
K. When connecting or disconnecting the internal
connectors, first, disconnect the AC plug from the
connectors, first, disconnect the AC plug from the
AC outlet.
AC outlet.
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