Yamaha RX-A760, Service Manual

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2
RX-V681/RX-A760
RX-V681/RX-A7
60
■
TO SERVICE PERSONNEL
1. Critical Components Information
Components having special characteristics are marked
⚠ and
must be replaced with parts having specifications equal to
those originally installed.
2. Leakage Current Measurement (For 120V Models Only)
When service has been completed, it is imperative to verify
that all exposed conductive surfaces are properly insulated
from supply circuits.
• Meter impedance should be equivalent to 1500 ohms shunted
by 0.15 μF.
WALL
OUTLET
EQUIPMENT
UNDER TEST
AC LEAKAGE
TESTER OR
EQUIVALENT
INSULATING
TABLE
• Leakage current must not exceed 0.5mA.
• Be sure to test for leakage with the AC plug in both polarities.
For U model
“CAUTION”
“F3701: FOR CONTINUED PROTECTION AGAINST RISK OF FIRE, REPLACE ONLY WITH SAME TYPE 2A,
250V FUSE.”
“F3702: FOR CONTINUED PROTECTION AGAINST RISK OF FIRE, REPLACE ONLY WITH SAME TYPE 8A,
125V FUSE.”
For C model
CAUTION
F3701: REPLACE WITH SAME TYPE 2A, 250V FUSE.
F3702: REPLACE WITH SAME TYPE 8A, 125V FUSE.
ATTENTION
F3701: UTILISER UN FUSIBLE DE RECHANGE DE MÉME TYPE DE 2A, 250V.
F3702: UTILISER UN FUSIBLE DE RECHANGE DE MÉME TYPE DE 8A, 125V.
CALIFORNIA PROPOSITIO N 65 W ARNING
This product contains chemicals known to the State of California to cause cancer, or birth defects or other reproductive
harm.
DO NOT PLACE SOLDER, ELECTRICAL/ELECTRONIC OR PLASTIC COMPONENTS IN YOUR MOUTH FOR ANY REASON
WHATSOEVER!
Avoid prolonged, unprotected contact between solder and your skin! When soldering, do not inhale solder fumes or ex-
pose eyes to solder/flux vapor!
If you come in contact with solder or components located inside the enclosure of this product, wash your hands before
handling food.
About lead free solder
All of the P.C.B.s installed in this unit and solder joints are soldered using the lead free solder.
Among some types of lead free solder currently available, it is recommended to use one of the following types for the re-
pair work.
• Sn + Ag + Cu (tin + copper)
• Sn + Cu (tin + copper)
• Sn + Zn + Bi (tin + zinc + bismuth)
Caution:
As the melting point temperature of the lead free solder is about 30
°
C to 40
°
C ( 5 0
°
F to 70
°
F) higher than that of the
lead solder, be sure to use a soldering iron suitable to each solder.