Yamaha YST-SW030 Service Manual
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YST-SW030/YST-SW010
I CONTENTS
TO SERVICE PERSONNEL .......................................... 2
SPECIFICATIONS / 参考仕様 .................................... 3~4
INTERNAL VIEW ........................................................... 4
REAR PANELS .......................................................... 5~8
1 0 0 8 8 6

SUBWOOFER SYSTEM

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.
BLOCK DIAGRAM ....................................................... 10
PRINTED CIRCUIT BOARD .................................. 11~12
SCHEMATIC DIAGRAM ........................................ 13~14
PARTS LIST ........................................................... 15~25
P.O.Box 1, Hamamatsu, Japan

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Summary of Contents for Yamaha YST-SW030

  • Page 1: Table Of Contents

    YST-SW030/YST-SW010 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.
  • Page 2: To Service Personnel

    F1: REPLACE WITH SAME TYPE 2A (YST-SW030) / 1.6A (YST-SW010), 125V FUSE. ATTENTION F1: UTILISER UN FUSIBLE DE RECHANGE DE MEME TYPE DE 2A (YST-SW030) / 1.6A (YST-SW010), 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.
  • Page 3: Specifications / 参考仕様

    YST-SW030/YST-SW010 I SPECIFICATIONS / 参考仕様 Power Consumption / 消費電力 Type / 型式 ..Advanced Yamaha Active Servo Technology [YST-SW030] Output Power / 出力 (100 Hz, 5 ohms, 10% T.H.D.) U, C, A, B, G, L, R, T, K models ........70 W [YST-SW030] ..............
  • Page 4: Internal View

    QD-Bass Technology Advanced Yamaha Active Servo QD-Bass (Quatre Dispersion Technology is a unique system to Bass) technology is a Yamaha let the speaker unit have a per- unique technology to radiate the fectly linear motion by the speaker sound efficiently in four horizontal and amplifier combination.
  • Page 5: Rear Panels

    YST-SW030/YST-SW010 I REAR PANELS YST-SW030 (U, C models) YST-SW030 (A model) YST-SW030 (B, G models) YST-SW030 (L model)
  • Page 6 YST-SW030/YST-SW010 YST-SW030 (R model) YST-SW030 (T model) YST-SW030 (K model) YST-SW030 (J model)
  • Page 7 YST-SW030/YST-SW010 YST-SW010 (U, C models) YST-SW010 (A model) YST-SW010 (B, G models) YST-SW010 (L model)
  • Page 8 YST-SW030/YST-SW010 YST-SW010 (R model) YST-SW010 (T model) YST-SW010 (K model) YST-SW010 (J model)
  • Page 9: Disassembly Procedures / 分解手順

    YST-SW030/YST-SW010 I DISASSEMBLY PROCEDURES / 分解手順 ※ 本項目では、代表としてYST-SW030について記述します。 * The description below uses YST-SW030 as a representative model. (Remove parts in the order as numbered.) (番号順に部品を取り外してください。) Disconnect the power cable from the AC outlet. AC電源コンセントから、電源コードを抜いてください。 1. スピーカーユニットの外し方 1. Removal of Driver a.
  • Page 10: Block Diagram

    YST-SW030/YST-SW010 When Checking the P.C.B.: P.C.B.チェックをする場合には ・ 分解の際に外したコネクターをすべて元通りに接続しま • C o n n e c t a l l t h e c o n n e c t o r s r e m o v e d d u r i n g す。...
  • Page 11: Printed Circuit Board

    YST-SW030/YST-SW010 I PRINTED CIRCUIT BOARD (Foil side) MAN (1) P. C. B. YST-SW030 (Lead Type Device) MAN (3) P. C. B. (Lead Type Device) DRIVER VOLUME INPUT MAIN Circuit No. U, C, A, B, G, J L, R, T, K...
  • Page 12 YST-SW030/YST-SW010 MAIN (1) P. C. B. (Lead Type Device) I PRINTED CIRCUIT BOARD (Foil side) YST-SW010 MAIN (3) P. C. B. (Lead Type Device) DRIVER VOLUME INPUT MAIN Circuit No. U, C, A, B, G, J L, R, T, K CB4, 5 •...
  • Page 13: Schematic Diagram

    YST-SW030/YST-SW010 SCHEMATIC DIAGRAM YST-SW030 POWER AMP. L.P.F. L.P.F. H.P.F. MAIN (3) MAIN (1) LIMITER 41.5 41.4 14.3 -14.4 41.4 INPUT -0.7 -14.3 14.6 VOLUME -1.8 14.3 -14.6 DRIVER A.N.I.C. -1.9 -0.2 24.7 -0.2 -0.3 -14.5 14.5 PROTECTION MAIN (9) MAIN (10) -37.3...
  • Page 14 YST-SW030/YST-SW010 SCHEMATIC DIAGRAM YST-SW010 POWER AMP. MAIN (3) MAIN (1) L.P.F. 14.4 -14.2 LIMITER 33.0 INPUT 32.6 32.9 L.P.F. -0.7 -14.2 H.P.F. 14.5 VOLUME -1.8 DRIVER 14.4 -14.3 PROTECTION -1.8 -0.2 -0.3 -0.2 -14.2 14.4 23.9 A.N.I.C. -30.1 MAIN (10)
  • Page 15: Parts List

    YST-SW030/YST-SW010 PARTS LIST I ELECTRICAL PARTS I WARNING Components having special characteristics are marked s and must be replaced with parts having specifications equal to those originally installed. Carbon resistors (1/6W or 1/4W) are not included in the ELECTRICAL PARTS List. For the parts No. of the carbon resistors, refer to last page.
  • Page 16 YST-SW030/YST-SW010 YST-SW030 P.C.B. MAIN Schm Ref. PART NO. Description Remarks Markets 部 品 名 Rank WC740200 P.C.B. MAIN PCB メイン WC740300 P.C.B. MAIN RTKL PCB メイン WC740400 P.C.B. MAIN PCB メイン s CB2 VG879900 CN.BS.PIN ベースピン VB390100 CN.BS.PIN ベースピン WC050700 HOLDER.FUS EYF52BCY RTKL ヒューズホルダー WC050700 HOLDER.FUS...
  • Page 17 YST-SW030/YST-SW010 YST-SW030 P.C.B. MAIN Schm Ref. PART NO. Description Remarks Markets 部 品 名 Rank VD631600 DIODE 1SS133,176 ダイオード VD631600 DIODE 1SS133,176 ダイオード VD631600 DIODE 1SS133,176 ダイオード VG442500 DIODE.ZENR MTZJ24B ツェナーダイオード VD631600 DIODE 1SS133,176 ダイオード VD631600 DIODE 1SS133,176 ダイオード VD631600 DIODE 1SS133,176 ダイオード...
  • Page 18 YST-SW030/YST-SW010 YST-SW030 YST-SW010 P.C.B. MAIN Schm Ref. PART NO. Description Remarks Markets 部 品 名 Rank WA789600 SCR.TERM スクリューターミナル * s SW1 WD018300 SW.PUSH PS4E-A-040 U.C.S プッシュSW * s SW2 WC906700 SW.SLIDE SDKPA40300 RTKL スライドSW VT658100 TERM.WRAP 352-TX119 ラッピング端子 VT658100 TERM.WRAP 352-TX119 ラッピング端子...
  • Page 19 YST-SW030/YST-SW010 YST-SW010 P.C.B. MAIN Schm Ref. PART NO. Description Remarks Markets 部 品 名 Rank s C35 WB121400 C.CE.SAFTY 0.01uF 295V 規格認定コン VE326800 C.MYLAR.ML 0.47uF 積層マイラーコン UA653220 C.MYLAR 2200pF マイラーコン UR867100 C.EL 10uF ケミコン UR868100 C.EL 100uF ケミコン V6476700 C.EL 4700uF ケミコン...
  • Page 20 YST-SW030/YST-SW010 YST-SW010 P.C.B. MAIN Schm Ref. PART NO. Description Remarks Markets 部 品 名 Rank HV754220 R.CAR.FP 22Ω 1/4W 不燃化カーボン抵抗 VC751900 R.MTL.OXD 0.22Ω 酸化金属被膜抵抗 HV754100 R.CAR.FP 10Ω 1/4W 不燃化カーボン抵抗 WC796900 R.MTL.FLM 2.7KΩ 1/4W 金属被膜抵抗 WC800700 R.MTL.FLM 100KΩ 1/4W 金属被膜抵抗 HV755100 R.CAR.FP 100Ω...
  • Page 21 YST-SW030/YST-SW010 Parts List for 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...
  • Page 22 YST-SW030/YST-SW010 I EXPLODED VIEW YST-SW030 4-32 4-1 (3) 4-20 4-19 4-34 4-14 4-17 4-32 4-24 4-36 4-34 4-36 4-32 4-11 4-31 4-1 (2) 4-35 4-35 4-16 4-33 4-34 4-32 4-1 (4) 4-23 (7)(10) 4-18 4-24 4-21 R, T, K, L models...
  • Page 23 YST-SW030/YST-SW010 I MECHANICAL PARTS Schm Ref. PART NO. Description Remarks Markets 部 品 名 Rank WC727900 CABINET ASS'Y キャビネットASSY WC727800 CABINET ASS'Y キャビネットASSY WC727700 CABINET ASS'Y キャビネットASSY X5399A00 DRIVER, WOOFER 20cm 6Ω JA2025 スピーカーユニット WC740200 P.C.B. ASS'Y MAIN PCB メイン WC740300 P.C.B. ASS'Y...
  • Page 24 YST-SW030/YST-SW010 I EXPLODED VIEW YST-SW010 4-20 4-34 4-17 4-19 4-38 4-32 4-24 4-34 4-34 4-35 4-11 4-38 4-1 (1) 4-31 4-33 4-16 4-34 4-23 4-1 (7)(10) R, T, K, L models 4-24 4-18 4-21 4-11 4-1 (9) 4-28...
  • Page 25 YST-SW030/YST-SW010 I MECHANICAL PARTS Schm Ref. PART NO. Description Remarks Markets 部 品 名 Rank WC781500 CABINET ASS'Y キャビネットASSY WC781400 CABINET ASS'Y キャビネットASSY WC781300 CABINET ASS'Y キャビネットASSY X5400A00 DRIVER, WOOFER 16cm 6Ω JA1690 スピーカーユニット WC785400 P.C.B. ASS'Y MAIN PCB メイン WC785500 P.C.B. ASS'Y...
  • Page 26 YST-SW030/YST-SW010...

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