Yamaha YST-SW030, Service Manual

YST-SW030/YST-SW010

2

YST-SW030/ YST-SW010

WALL

OUTLET

EQUIPMENT

UNDER TEST

AC LEAKAGE

TESTER OR

EQUIVALENT

INSULATING

TABLE

■

TO SERVICE PERSONNEL

1. Critical Components Information

Components having special characteristics are marked 

s

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 ohm shunted
by 0.15

µ

F.

“CAUTION”

“F1: FOR CONTINUED PROTECTION AGAINST RISK OF FIRE, REPLACE ONLY WITH SAME TYPE 2A (YST-
SW030) / 1.6A (YST-SW010), 125V FUSE.”

CAUTION

F1: REPLACE WITH SAME TYPE 2A (YST-SW030) / 1.6A (YST-SW010), 125V FUSE.

ATTENTION

F1: UTILISER UN FUSIBLE DE RECHANGE DE MEME TYPE DE 2A (YST-SW030) / 1.6A (YST-SW010), 125V.

WARNING: CHEMICAL CONTENT NOTICE!

The solder used in the production of this product contains LEAD.  In addition, other electrical/electronic and /or plastic
(where applicable) components may also contain traces of chemicals found by the California Health and Welfare Agency
(and possibly other entities) to cause cancer and/or birth defects or other reproductive harm.

DO NOT PLACE SOLDER, ELECTRICAL/ELECTRONIC OR PLASTIC COMPONENTS IN YOUR MOUTH FOR ANY REA-
SON WHATSOEVER!

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.

●

Leakage current must not exceed 0.5mA.

●

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

この製品に使用されているMAIN P.C.B.のハンダ面のハンダ付け
には、Sn+Ag+Cu（錫+銀+銅）の合金である無鉛ハンダが使用さ
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：

① 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。

② 鉛入りハンダを使わざるを得ない場合は、あらかじめ交換する

部品端子部やその周辺部の無鉛ハンダをすべて取り除くか、あ
るいは無鉛ハンダと鉛入りハンダが十分に溶けた状態となるよ
うにハンダ付けしてください。

The foil side of MAIN P.C.B. used for this product are
soldered with lead  free soldering material which is an
alloy of Sn+Ag+Cu (tin + copper).

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 + copper)

• Sn + Cu (tin + copper)

• Sn + Zn + Bi (tin + zinc + bismuth)

Caution:

1. 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.

2. If lead solder must be used, be sure to remove lead free solder

from each terminal section of the parts to be replaced and

from the area around it completely before soldering, or make

sure that the lead free solder and lead solder melt together

fully.

About Lead Free Solder / 

無鉛ハンダについて