To Service Personnel - Yamaha DVX-S120 Service Manual

DVR-S120/NX-P120
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TO SERVICE PERSONNEL

1. Critical Components Information
Components having special characteristics are marked Z
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 0.15µF.
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 REASON 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.
TE
L 13942296513
About lead-free solder / 無鉛ハンダについて
The foil side of MAIN P.C.B. and SUB P.C.B. used for the
DVR-S120 are soldered with lead-free soldering material
which is an alloy of Sn+Ag+Cu (tin + silver + copper).
For the soldering points other than the above, lead solder is
used.
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:
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.
www
2. If lead solder must be used, be sure to remove lead-free
solder from each terminal section of the parts to be re-
placed and from the area around it completely before sol-
.
dering, or make sure that the lead-free solder and lead
solder melt together fully.
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EQUIPMENT
WALL
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.
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DVR-S120 に使用されている MAIN 基板および SUB 基板の
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。
なお、上記以外のハンダ付けには鉛入りハンダが使用され
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
co
溶けた状態となるようにハンダ付けしてください。
.
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AC LEAKAGE
TESTER OR
EQUIVALENT
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m
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