Yamaha RX-A4A - TO SERVICE PERSONNEL

RX-A4A
2
FUSE CAUTION
For 120V models
CAUTION
F4001: FOR CONTINUED PROTECTION AGAINST RISK OF FIRE, REPLACE ONLY WITH SAME TYPE 2A,
250V FUSE.
F4002: FOR CONTINUED PROTECTION AGAINST RISK OF FIRE, REPLACE ONLY WITH SAME TYPE 10A,
125V FUSE.
F4003: FOR CONTINUED PROTECTION AGAINST RISK OF FIRE, REPLACE ONLY WITH SAME TYPE 2A,
63V Chip FUSE.
For Canadian model
CAUTION
F4001: REPLACE WITH SAME TYPE 2A, 250V FUSE.
F4002: REPLACE WITH SAME TYPE 10A, 125V FUSE.
F4003: REPLACE WITH SAME TYPE 2A, 63V FUSE.
ATTENTION
F4001: UTILISER UN FUSIBLE DE RECHANGE DE MÊME TYPE DE 2A, 250V.
F4002: UTILISER UN FUSIBLE DE RECHANGE DE MÊME TYPE DE 10A, 125V
F4003: UTILISER UN FUSIBLE DE RECHANGE DE MÊME TYPE DE 2A, 63V
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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.
About lead free solder / 無鉛ハンダについて
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 repair work.
• Sn + Ag + Cu (tin + silver + 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 (50°F to 70°F) higher than that of
the lead solder, be sure to use a soldering iron suitable to
each solder.
本機に搭載されているすべての基板およびハンダ付けに
よる接合部は無鉛ハンダでハンダ付けされています。
無鉛ハンダにはいくつかの種類がありますが、修理時に
は下記のような無鉛ハンダの使用を推奨します。
• Sn+Ag+Cu（錫 + 銀 + 銅）
• Sn+Cu（錫 + 銅）
• Sn+Zn+Bi（錫 + 亜鉛 + ビスマス）
注意：
無鉛ハンダの融点温度は通常の鉛入りハンダに比べ 30 ～
40°C 程度高くなっていますので、それぞれのハンダに合っ
たハンダごてをご使用ください。