Yamaha MCX-C15 Service Manual page 3

Musiccast distributed audio controller/amplifier
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WARNING:
Lithium batteries are dangerous because
they can be exploded by improper handling. Observe the
following precautions when handling or replacing lithium
batteries.
• Leave lithium battery replacement to qualified service
personnel.
• Always replace with batteries of the same type.
• When installing on the PC board by soldering, solder us-
ing the connection terminals provided on the battery cells.
Never solder directly to the cells. Perform the soldering
as quickly as possible.
• Never reverse the battery polarities when installing.
• Do not short the batteries.
• Do not attempt to recharge these batteries.
• Do not disassemble the batteries.
• Never heat batteries or throw them into fire.
About Lead Free Solder
The P.C.B.s installed in this unit are soldered using the fol-
lowing solder.
MCX-C15
Side A
MAIN P.C.B.
Lead Solder
FUNCTION P.C.B.
Lead Solder
SYSTEM P.C.B.
Lead Solder
MCX-CA15
Side A
D-AMP P.C.B.
Lead 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:
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.
Side B
Lead Solder
Lead Solder
Lead Free Solder
Side B
Lead Free Solder
REFLOW
SMT
Side A
Solder Dip
Side B
FLOW
MI
ADVARSEL!
Lithiumbatteri —Eksplosionsfare ved fejlagtig håndtering.
Udskiftning må kun ske med batteri af samme fabrikat og
type. Levér det brugte batteri tilbage til leverandøren.
VARNING
Explosionsfara vid felaktigt batteribyte. Använd samma
batterityp eller an ekvivalent typ som rekommenderas av
apparattillverkaren. Kassera använt batteri enligt
fabrikantens instruktion.
VAROITUS
Paristo voi räjähtää, jos se on virheellisesti asennettu.
Vaihda paristo ainoastaan laitevalmistajan suosittelemaan
tyyppiin. Hävitä käytetty peristo valmistajan ohjeiden
mukaisesti.
無鉛ハンダについて
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。
MCX-C15
A 面
MAIN P.C.B.
鉛入りハンダ
FUNCTION P.C.B.
鉛入りハンダ
鉛入りハンダ
SYSTEM P.C.B.
MCX-CA15
A 面
鉛入りハンダ
D-AMP P.C.B.
Process
Process
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。
MCX-C15/MCX-CA15
B 面
鉛入りハンダ
鉛入りハンダ
無鉛ハンダ
B 面
無鉛ハンダ
3

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