To Service Personnel - Yamaha YSP-900 Service Manual

YSP-900
I 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.
G Meter impedance should be equivalent to 1500 ohms shunted
by 0.15µF.
"CAUTION"
"F501: FOR CONTINUED PROTECTION AGAINST RISK OF FIRE, REPLACE ONLY WITH SAME TYPE 4A, 125V FUSE."
CAUTION
F501: REPLACE WITH SAME TYPE 4A, 125V FUSE.
ATTENTION
F501: UTILISER UN FUSIBLE DE RECHANGE DE MEME TYPE DE 4A, 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.
About Lead Free Solder / 無鉛ハンダについて
All of the P.C.B.s installed in this unit 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.
2
WALL EQUIPMENT
OUTLET UNDER TEST
INSULATING
TABLE
G Leakage current must not exceed 0.5mA.
G 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