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Yamaha Soavo-900SW Service Manual
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Yamaha Soavo-900SW Service Manual

Yamaha Soavo-900SW Service Manual

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See also: Owner's Manual
Soavo-900SW
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:
IMPORTANT:
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:
IMPORTANT:
CONTENTS
TO SERVICE PERSONNEL ......................................... 2
FRONT PANEL ............................................................. 3
REAR PANELS ......................................................... 3-5
REMOTE CONTROL PANEL ....................................... 6
SPECIFICATIONS /
参考仕様 ................................................
DIMENSIONS ................................................................ 7
INTERNAL VIEW .......................................................... 7
1 0 1 0 2 7

SUBWOOFER SYSTEM

POWER
STANDBY
SLEEP
B.A.S.S.
PHASE
MEMORY
PRESET
1
2
3
VOLUME
HIGH CUT
WH64300
IMPORTANT NOTICE
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.
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.
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).
Turn the unit OFF during disassembly and part replacement. Recheck all work before you apply power to the unit.
6
8-10
分解手順 ..............
© 2006 YAMAHA CORPORATION. All rights reserved.
This manual is copyrighted by YAMAHA and may not be copied or
redistributed either in print or electronically without permission.
SERVICE MANUAL
SERVICE MANUAL
REPAIR PROCEDURES /
修理手順 ..........................
DC OFFSET ADJUSTMENT /
IC DATA ...................................................................... 16
BLOCK DIAGRAM ...................................................... 17
PRINTED CIRCUIT BOARDS .............................. 18-20
SCHEMATIC DIAGRAMS .................................... 21-22
REPLACEMENT PARTS LIST ............................. 23-34
REMOTE CONTROL .................................................. 35
11-14
14-15
'06.09

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Summary of Contents for Yamaha Soavo-900SW

  • Page 1: Table Of Contents

    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.

  • Page 2: To Service Personnel

    Soavo-900SW TO SERVICE PERSONNEL 1. Critical Components Information AC LEAKAGE Components having special characteristics are marked Z EQUIPMENT WALL TESTER OR OUTLET UNDER TEST EQUIVALENT and must be replaced with parts having specifications equal to those originally installed. 2. Leakage Current Measurement (For 120V Models Only)

  • Page 3: Front Panel

    Soavo-900SW FRONT PANEL REAR PANELS U, C models...
  • Page 4 Soavo-900SW R model T model K model A model...
  • Page 5 Soavo-900SW B, G models L model J model...

  • Page 6: Remote Control Panel

    VOLUME HIGH CUT WH64300 SPECIFICATIONS / 参考仕様 Type / 型式 ... Advanced Yamaha Active Servo Technology II B, G models ......... AC 230 V, 50 Hz Output Power / 出力 J model ........... AC 100 V, 50/60 Hz 100 Hz, 4 ohms, 10 % T.H.D ......600 W Power Consumption / 消費電力...

  • Page 7: Dimensions

    Soavo-900SW DIMENSIONS 410 (16-1/8") 410 (16-1/8") 21.5 (1-3/16") (7/8") 461.5 (18-3/16") Unit : mm (inch) INTERNAL VIEW q DRIVER r DIGITAL P.C.B. w MAIN (4) P.C.B. t MAIN (2) P.C.B. e MAIN (3) P.C.B. y MAIN (1) P.C.B. u MAIN (7) P.C.B. (R, L models) i POWER TRANSFORMER o MAIN (6) P.C.B.

  • Page 8: Disassembly Procedures / 分解手順

    Soavo-900SW DISASSEMBLY PROCEDURES / 分解手順 （番号順に部品を取り外してください。 ） (Remove parts in the order as numbered.) AC 電源コンセントから、電源コードを抜いてください。 Disconnect the power cable from the AC outlet. 1. Removal of Front Grille Ass'y 1. フロントグリル ASS'Y の外し方 ＊ フロントグリル ASS'Y は 5 箇所のダボで固定されていま...
  • Page 9 Soavo-900SW 2. Removal of Driver 2. スピーカーユニットの外し方 a. Remove 8 screws ( ) and then remove the driver. のネジ８本を外し、スピーカーユニットを取り外し (Fig. 1) ます。 (Fig. 1) ＊ 取り外しには六角レンチ(4 mm)を使用します。 * Use an allen wrench (4mm) to unscrew the driver. b. Disconnect the connector connected to the terminal of b.
  • Page 10 Soavo-900SW 4. Removal of Front Panel Ass’y 4. フロントパネル ASS'Y の外し方 Remove 4 screws ( ) and then remove the front のネジ 4 本を外し、フロントパネル ASS'Y を取り外 panel ass’y. (Fig. 4) します。 (Fig. 4) 5. Removal of Power Transformer 5. 電源トランスの外し方...

  • Page 11: 修理手順

    Soavo-900SW REPAIR PROCEDURES / 修理手順 Safety Measures 安全対策 • Some internal parts in this product contain high voltages ・ この製品の内部には高電圧部分があり危険です。修理の and are dangerous. Be sure to take safety measures 際は、絶縁性の手袋を使用するなどの安全対策を行って during servicing, such as wearing insulating gloves. ください。 • C77 and C80 on the MAIN (1) P.C.B. are dangerous, for a high voltage is retained there even after the power ・...
  • Page 12 Soavo-900SW Operation Check 動作確認 Caution: When taking measurement at the following points 注意） 動作チェックをする場合、 下記箇所は電圧計などで測定 をしないでください。故障の原因になります。 for operation check, do not use a voltmeter or the like which may cause a failure. IC102 10 ピン Q125 ベース Pin 10 of IC102 Base of Q125 IC102 14 ピン...
  • Page 13 Soavo-900SW 1. Output Voltage Check 1. 出力電圧の確認 a. Disconnect CB22 of the MAIN (1) P.C.B. so that no a. MAIN (1) P.C.B. の CB22 を外し、無負荷にします。 load is applied. b. 本機の電源コードを AC コンセントに接続します。 b. Connect the power cable of this unit to the AC outlet.

  • Page 14: Dcオフセット調整

    SP+ and SP–. す。 g. Increase the output level of the signal generator and g. 信号発生器の出力レベルおよびSoavo-900SWのボリュー Soavo-900SW volume gradually and measure the ムを徐々に上げて、 オシロスコープで出力波形を測定し output waveform using the oscilloscope. ます。 h. If the output waveform is not distorted until the output h.
  • Page 15 Soavo-900SW DIGITAL P.C.B. VR101 0 ± 80 mV MAIN (1) P.C.B.

  • Page 16: Ic Data

    Soavo-900SW IC DATA IC7 : LC651152N-4N21-E (MAIN (1) P.C.B.) 8-bit Microprocessor PG0/AD4 PA3/AD3 PA0/AD0 PG1/AD5 PA2/AD2 Port A PA3/AD3 PG2/AD6 PA1/AD1 PG3/AD7 PA0/AD0 STACK 1 8 bit PE1/WDR STACK 8 I. DEC PG0/AD4 Port G OSC1 PG3/AD7 System Bus OSC2...

  • Page 17: Block Diagram

    Soavo-900SW BLOCK DIAGRAM MAIN See page 21 SCHEMATIC DIAGRAM A.N.I.C IC13,14,Q20-22 IC1A IC2A IC2B MOSFET DRIVER PHASE IC3A Q108 L.P.F IC3B WOOFER INPUT1 IC4A SELECT VOLUME IC4B DRIVER XL101 L101 IC5A L.P.F. IC5B IC12A IC102 MOSFET C153 L.P.F. IC12B CLOCK 2MHz –...

  • Page 18: Printed Circuit Boards

    Soavo-900SW PRINTED CIRCUIT BOARDS MAIN (1) P.C.B. MAIN (2) P.C.B. (Side A) (Side A) OUTPUT POWER TRANSFORMER INPUT 1 POWER TRANSFORMER 5 k-ohms Point q (Pin 8 of IC7) (U, C, T, K, A, B, G, J models) (R, L models)
  • Page 19 Soavo-900SW MAIN (3) P.C.B. MAIN (4) P.C.B. MAIN (6) P.C.B. (Side A) (Side A) (Side A) STANDBY H-CUT VOLUME AC IN PRESET B.A.S.S. STANDBY PHASE MAIN (1) CB20 MAIN (1) MAIN (1) W5A, W6A MAIN (1) R, L models MAIN (5) P.C.B.
  • Page 20 Soavo-900SW DIGITAL P.C.B. DIGITAL P.C.B. (Side A) (Side B) Point e (Pin 23 of IC101) MAIN (1) DC OFFSET ADJUSTMENT Caution: When taking measurement at the following points for operation check, do not use a voltmeter or the like which may cause a failure.

  • Page 21: Schematic Diagrams

    Soavo-900SW SCHEMATIC DIAGRAMS MAIN Point q (Pin 8 of IC7) Page 22 To DIGITAL CB101 INPUT 1/ OUTPUT 14.8 14.8 14.8 -14.9 L/MONO Point w CH 1 : Out of IC11 -14.9 INPUT 3 CH 2 : Pin 11 of IC7 (NORMAL) –...

  • Page 22: Schematic Diagrams

    Soavo-900SW Caution: When taking measurement at the following points for 注意）動作チェックをする場合、下記箇所は電圧計などで測定を DIGITAL しないでください。故障の原因になります。 operation check, do not use a voltmeter or the like which may cause a failure. IC102 10 ピン Q125 ベース Pin 10 of IC102 Base of Q125 IC102 14 ピン...

  • Page 23: Replacement Parts List

    Soavo-900SW REPLACEMENT PARTS LIST ELECTRICAL COMPONENT PARTS WARNING Components having special characteristics are marked Z and must be 印のある部分は、安全確保部品を示しています。部品の交換が必要な場合、 replaced with parts having specifications equal to those originally installed. パーツリストに記載されている部品を使用してください。 部品価格ランクは、予告なく変更することがあります。 ABBREVIATIONS IN THIS LIST ARE AS FOLLOWS : C.A.EL.CHP : CHIP ALUMI.
  • Page 24 Soavo-900SW P.C.B. MAIN Ref. No. Part No. Description Remarks Markets 部品名 Rank WH695100 P.C.B. MAIN ＰＣＢ メイン     WH695200 P.C.B. MAIN ＰＣＢ メイン     WH695300 P.C.B. MAIN ＰＣＢ メイン     WH695400 P.C.B. MAIN ＰＣＢ メイン     WH695500 P.C.B. MAIN ＰＣＢ メイン     WH695600 P.C.B. MAIN ＰＣＢ メイン     VB390100 CN.BS.PIN ベースピン CB3-4 VB390300 CN.BS.PIN...
  • Page 25 Soavo-900SW P.C.B. MAIN Ref. No. Part No. Description Remarks Markets 部品名 Rank C37-39 UR867100 C.EL 10uF ケミコン         01 VY675000 C.CE.SAFTY 0.01uF 250V 規格認定コン       VY675100 C.CE.SAFTY 4700pF 250V UCRTKABGL 規格認定コン ＫＨ    01 VY675000 C.CE.SAFTY 0.01uF 250V 規格認定コン       VY675100 C.CE.SAFTY 4700pF 250V UCRTKABGL 規格認定コン ＫＨ    01 C45-46 UR867100 C.EL...
  • Page 26 Soavo-900SW P.C.B. MAIN Ref. No. Part No. Description Remarks Markets 部品名 Rank VD631600 DIODE 1SS133,176 ダイオード        01 VD631600 DIODE 1SS133,176 ダイオード        01 VR253700 DIODE.BRG S1NB20 1A 200V ＤＩブリッジ Ｘ４ VG437500 DIODE.ZENR MTZJ5.1C 5.1V ツェナーダイオード    VG440300 DIODE.ZENR MTZJ12C ツェナーダイオード    VD631600 DIODE 1SS133,176 ダイオード       ...
  • Page 27 Soavo-900SW P.C.B. MAIN & DIGITAL Ref. No. Part No. Description Remarks Markets 部品名 Rank R127 V6146800 R.CEMENT 0.22Ω+0.22Ω セメント抵抗       R131-132 HV753100 R.CAR.FP 1Ω 1/4W 不燃化カーボン抵抗    01 R134 HV753100 R.CAR.FP 1Ω 1/4W 不燃化カーボン抵抗    01 R139 HV755220 R.CAR.FP 220Ω 1/4W 不燃化カーボン抵抗    R140 VC751800 R.MTL.OXD...
  • Page 28 Soavo-900SW P.C.B. DIGITAL Ref. No. Part No. Description Remarks Markets 部品名 Rank C130 UR837470 C.EL 47uF ケミコン C131 UR848470 C.EL 470uF ケミコン         C132 WD418300 C.CE.CHP 0.33uF 25V K チップセラコン    C133 UR848470 C.EL 470uF ケミコン         C134 WD418300 C.CE.CHP 0.33uF 25V K チップセラコン   ...
  • Page 29 Soavo-900SW P.C.B. DIGITAL Ref. No. Part No. Description Remarks Markets 部品名 Rank D150 VU992600 DIODE.ZENR MA8051-M 5.1V ツェナーダイオード    01 IC101 X5148A00 IC YDA133-EZE2 ＩＣ           IC102-103 X7761A00 IC IRS20954STRPBF ＩＣ      IC109 X3505A00 IC NJM2068MD-TE2 アンプＩＣ    IC110 XJ757A00 IC NJM78L05A-T3 ＩＣ IC111...
  • Page 30 Soavo-900SW Chip Resistors The chip resistor is not supplied as a replacement part. チップ抵抗はサービス部品として供給しません。 ※ チップ抵抗が必要な場合は、下記の部品をご利用ください。 * When a chip resistor is necessary, use the following part. AAX60720: CHIP RESISTOR SAMPLE BOOK AAX60720: CHIP RESISTOR SAMPLE BOOK Ref.No. Part No.
  • Page 31 Soavo-900SW Carbon Resistors Value 1/4W Type Part No. 1/6W Type Part No. Value 1/4W Type Part No. 1/6W Type Part No. 1.0 Ω 3100 3100 10 kΩ 7100 7100 HJ35 HF85 HF45 HF45 1.8 Ω 3180 11 kΩ 7110 7110...
  • Page 32 Soavo-900SW 5-2 (2) OVERALL ASS’Y 5-2 (5) 5-55 5-56 200-1 5-54 5-57 5-2 (1) 5-55 J model 5-54 5-56 J model 5-56 5-52 R, L models 5-31 5-54 5-52 5-2 (6) 5-2 (7) R, L models 5-52 5-54 5-16 5-1-13...
  • Page 33 Soavo-900SW Ref. Part No. Description Remarks Markets 部品名 Rank WH693100 CABINET ASS'Y キャビネットＡＳＳＹ  WH794400 CABINET ASS'Y キャビネットＡＳＳＹ  WH693200 CABINET ASS'Y キャビネットＡＳＳＹ  WH693000 CABINET ASS'Y キャビネットＡＳＳＹ  V2729700 EMBLEM エンブレム      X8084A00 DRIVER WOOFER 25cm 5Ω JA2567 スピーカーユニット  * 3-1 WH621200 FRONT COVER フロントカバー     ...
  • Page 34 Soavo-900SW Ref. Part No. Description Remarks Markets 部品名 Rank * 20 WH622100 WINDOW PANEL LID ウインドウ       V7902100 HEXAGON SOCKET TAPPING SCREW 5x30 MFNI33 ６角穴付タッピングネジ WF459800 BIND HEAD TAPPING SCREW #1 4x25 MFZN2B3 バインドＴＰネジ ＃１ * 23 WH725500 PAN HEAD SCREW 6x20 MFZN2W3 ナベ小ネジ    ...

  • Page 35: Remote Control

    Soavo-900SW REMOTE CONTROL SCHEMATIC DIAGRAM MIE-554A2 2 ohms 47µF 27 ohms 2SC3440-T112 CARR IC1 : M34283G2GP-W5/U1 3.0V 0.1µF XOUT 4.00MHz PANEL KEY LAYOUT KEY CODE CUSTOM CODE (HEX): 7B-84 Data Code Name (HEX) SLEEP POWER STANDBY POWER B.A.S.S. B.A.S.S. PHASE...
  • Page 36 Soavo-900SW...

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