RX-6030VBK
SECTION 1
Important Safety Precautions
1.1 Safety Precautions
(1) This design of this product contains special hardware andexposed metal part and a known good earth ground.
many circuits and components specially for safety purposes.Measure the AC voltage across the resistor with the AC
For continued protection, no changes should be made to thevoltmeter.
original design unless authorized in writing by the man-Move the resistor connection to each exposed metal part,
ufacturer. Replacement parts must be identical to thoseparticularly any exposed metal part having a return path to
used in the original circuits. Services should be per-the chassis, and measure the AC voltage across the resistor.
formed by qualified personnel only.Now, reverse the plug in the AC outlet and repeat each
(2) Alterations of the design or circuitry of the product shouldmeasurement. Voltage measured any must not exceed 0.75
not be made. Any design alterations of the product shouldV AC (r.m.s.). This corresponds to 0.5 mA AC (r.m.s.).
not be made. Any design alterations or additions will void
the manufacturers warranty and will further relieve the
manufacture of responsibility for personal injury or property
damage resulting therefrom.
(3) Many electrical and mechanical parts in the products have
special safety-related characteristics. These characteris-
tics are often not evident from visual inspection nor can the
protection afforded by them necessarily be obtained by us-
ing replacement components rated for higher voltage, watt-
age, etc. Replacement parts which have these special safety
characteristics are identified in the Parts List of Service Manu-1.2 Warning
al. Electrical components having such features are iden-(1) This equipment has been designed and manufactured to
tified by shading on the schematics and by ( ) on themeet international safety standards.
Parts List in the Service Manual. The use of a substitute re-
placement which does not have the same safety character-(2) It is the legal responsibility of the repairer to ensure that
istics as the recommended replacement parts shown in thethese safety standards are maintained.
Parts List of Service Manual may create shock, fire, or oth-(3) Repairs must be made in accordance with the relevant
safety standards.
er hazards.
(4) The leads in the products are routed and dressed with ties,(4) It is essential that safety critical components are replaced
clamps, tubings, barriers and the like to be separated fromby approved parts.
live parts, high temperature parts, moving parts and/or(5) If mains voltage selector is provided, check setting for local
sharp edges for the prevention of electric shock and firevoltage.
hazard. When service is required, the original lead routing1.3 Caution
and dress should be observed, and it should be confirmedBurrs formed during molding may be left over on some parts
that they have been returned to normal, after reassembling.of the chassis.
(5) Leakage shock hazard testing)Therefore, pay attention to such burrs in the case of pre-
After reassembling the product, always perform an isolationforming repair of this system.
check on the exposed metal parts of the product (antenna1.4 Critical parts for safety
terminals, knobs, metal cabinet, screw heads, headphoneIn regard with component parts appearing on the silk-screen
jack, control shafts, etc.) to be sure the product is safe toprinted side (parts side) of the PWB diagrams, the parts that are
operate without danger of electrical shock.printed over with black such as the resistor ( ), diode ( )
Do not use a line isolation transformer during this check.and ICP ( ) or identified by the " " mark nearby are critical
for safety.
? Plug the AC line cord directly into the AC outlet. Using aWhen replacing them, be sure to use the parts of the same type
"Leakage Current Tester", measure the leakage current
from each exposed metal parts of the cabinet, particular-and rating as specified by the manufacturer. (Except the JC version)
ly any exposed metal part having a return path to the
chassis, to a known good earth ground. Any leakage cur-
rent must not exceed 0.5mA AC (r.m.s.).
? Alternate check method
Plug the AC line cord directly into the AC outlet. Use an AC
voltmeter having, 1,000 ohms per volt or more sensitivity in
the following manner. Connect a 1,500 ohm 10W resistor
paralleled by a 0.15 ?F AC-type capacitor between an
1-2 (No.22026) |
ACEC
