Yamaha YSP-1 Service Manual Download Page 2

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YSP-1

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.

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

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

●

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

Side A

Side B

SMT

REFLOW

Process

FLOW

Process

Solder Dip

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。

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.

The P.C.B.s installed in this unit are soldered using the
following solder.

本機に搭載されている基板のハンダ付けに使用されている
ハンダは下記の通りです。

DSP P.C.B.
AMP P.C.B.
INPUT P.C.B.

SIDE A /

A 面

Lead Free Solder /

無鉛ハンダ

Lead Free Solder /

無鉛ハンダ

–

SIDE B /

B 面