Yamaha ATS-CU2070 Service-Handbuch - Seite 2

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YAS-CU207/ATS-CU2070/NS-WSW42

■ 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.

CALIFORNIA PROPOSITION 65 WARNING

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

WHAT SO EVER!

Avoid prolonged, unprotected contact between solder and your skin! When soldering, do not inhale solder fumes or

expose 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 / 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.

WALL

EQUIPMENT

OUTLET

UNDER TEST

INSULATING

TABLE

• Leakage current must not exceed 0.5mA.

• Be sure to test for leakage with the AC plug in both polarities.

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℃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。

AC LEAKAGE

TESTER OR

EQUIVALENT