Yamaha-AS-1000-Service-Manual.pdf

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A-S1000
STEREO AMPLIFIER
A-S1000
SERVICE MANUAL
IMPORTANT NOTICE
This manual has been provided for the use of authorized YAMAHA Retailers and their service personnel.
It has been assumed that basic service procedures inherent to the industry, and more specifically YAMAHA Products, are already
known and understood by the users, and have therefore not been restated.
WARNING:
Failure to follow appropriate service and safety procedures when servicing this product may result in personal
injury, destruction of expensive components, and failure of the product to perform as specified. For these reasons,
we advise all YAMAHA product owners that any service required should be performed by an authorized
YAMAHA Retailer or the appointed service representative.
IMPORTANT:
The presentation or sale of this manual to any individual or firm does not constitute authorization, certification or
recognition of any applicable technical capabilities, or establish a principle-agent relationship of any form.
The data provided is believed to be accurate and applicable to the unit(s) indicated on the cover. The research, engineering, and
service departments of YAMAHA are continually striving to improve YAMAHA products. Modifications are, therefore, inevitable
and specifications are subject to change without notice or obligation to retrofit. Should any discrepancy appear to exist, please
contact the distributor's Service Division.
WARNING:
Static discharges can destroy expensive components. Discharge any static electricity your body may have
accumulated by grounding yourself to the ground buss in the unit (heavy gauge black wires connect to this buss).
IMPORTANT:
Turn the unit OFF during disassembly and part replacement. Recheck all work before you apply power to the unit.
I
CONTENTS
TO SERVICE PERSONNEL .......................................... 2
FRONT PANEL .............................................................. 3
REAR PANELS .......................................................... 3–6
REMOTE CONTROL PANELS ...................................... 6
SPECIFICATIONS /
参考仕様
.......................................... 7
INTERNAL VIEW ........................................................... 8
SERVICE PRECAUTIONS
/
サービス時の注意事項
.................................................... 9
DISASSEMBLY PROCEDURES
/
分解手順
............. 9–18
AMP ADJUSTMENT
/
アンプ部調整
............................. 19
UPDATING FIRMWARE
/
ファームウェアの書き込み
..................................... 20–25
SELF-DIAGNOSTIC FUNCTION
/
ダイアグ（自己診断機�½） .....................................
26–28
IC DATA ................................................................. 29–32
PIN CONNECTION DIAGRAMS ............................ 33–34
BLOCK DIAGRAM ....................................................... 35
PRINTED CIRCUIT BOARDS ................................ 36–54
SCHEMATIC DIAGRAMS ...................................... 55–61
REPLACEMENT PARTS LIST .............................. 63–83
REMOTE CONTROL .............................................. 84–85
101091
Copyright © 2008
All rights reserved.
This manual is copyrighted by YAMAHA and may not be copied or
redistributed either in print or electronically without permission.
P.O.Box 1, Hamamatsu, Japan
'08.05
A-S1000
A-S1000
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
WALL
OUTLET
EQUIPMENT
UNDER TEST
AC LEAKAGE
TESTER OR
EQUIVALENT
INSULATING
TABLE
G
G
Meter impedance should be equivalent to 1500 ohms shunted
by 0.15µF.
Leakage current must not exceed 0.5mA.
Be sure to test for leakage with the AC plug in both polarities.
For U model
“CAUTION”
“F1: FOR CONTINUED PROTECTION AGAINST RISK OF FIRE, REPLACE ONLY WITH SAME TYPE 10A,
125V FUSE.”
For C model
CAUTION
F1: REPLACE WITH SAME TYPE 10A, 125V FUSE.
ATTENTION
F1: UTILISER UN FUSIBLE DE RECHANGE DE MÉME TYPE DE 10A, 125V.
WARNING: CHEMICAL CONTENT NOTICE!
This product contains chemicals known to the State of California to cause cancer, or birth defects or other reproductive
harm.
DO NOT PLACE SOLDER, ELECTRICAL/ELECTRONIC OR PLASTIC COMPONENTS IN YOUR MOUTH FOR ANY
REASON WHAT SO EVER!
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 and solder joints 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)
本機に搭載されているすべての基板およびハンダ付けによる接合
部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�½�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�½�用ください。
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

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