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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.

YST-FSW150/

YST-FSW050

CONTENTS

TO SERVICE PERSONNEL .......................................... 2
SPECIFICATIONS / 

参考仕様

........................................ 3

INTERNAL VIEW ........................................................... 4
FRONT PANELS ............................................................ 5
REAR PANELS .......................................................... 6–7

DISASSEMBLY PROCEDURES

 / 

分解手順

........... 8–11

BLOCK DIAGRAM ....................................................... 12
PRINTED CIRCUIT BOARDS ................................ 13–14
SCHEMATIC DIAGRAMS ...................................... 15–16
REPLACEMENT PARTS LIST .............................. 17–25

1 0 1 0 6 1

SERVICE  MANUAL

SUBWOOFER SYSTEM

YST-FSW150/YST-FSW050

 2007                                         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

 '07.08

• YST-FSW150

• YST-FSW050

Summary of Contents for FSW150 - YST Subwoofer - 75 Watt

Page 1: ...ndicated 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 component...

Page 2: ...vice 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 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 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使用を推奨します ...

Page 3: ...0 Hz Power Consumption 消費電力 YST FSW150 U C R T A B G L models 70 W J model 45 W YST FSW050 U C R T K A B G L models 40 W J model 25 W Dimensions 外形寸法 W x H x D YST FSW150 435 x 151 x 360 mm 17 1 8 x 5 15 16 x 14 3 16 YST FSW050 350 x 163 x 360 mm 13 3 4 x 6 7 16 x 14 3 16 Weight 質量 YST FSW150 9 4 kg 20 lbs 12 oz YST FSW050 8 5 kg 18 lbs 12 oz Finish YST FSW150 Black Color U C R T A B G L J models ...

Page 4: ... MAIN 6 P C B R L models Driver Woofer MAIN 1 P C B MAIN 2 P C B MAIN 3 P C B 6 7 8 1 2 3 5 4 INTERNAL VIEW YST FSW150 YST FSW050 1 2 3 4 5 6 7 8 Power Transformer MAIN 7 P C B U C T K A B G J models MAIN 8 P C B R L models MAIN 6 P C B R L models Driver Woofer MAIN 4 P C B MAIN 1 P C B MAIN 2 P C B MAIN 3 P C B 6 7 8 4 5 1 3 2 ...

Page 5: ...T FSW150 YST FSW050 5 YST FSW150 YST FSW050 Power indicator Power indicator FRONT PANELS R L models U C J models R L models U C J models YST FSW150 YST FSW050 Front view Bottom view Front view Bottom view ...

Page 6: ......

Page 7: ......

Page 8: ...ade screwdriver only without using the metalblade or the like may cause damage to the bottom grille ass y When installing the bottom grille ass y apply quick drying bond or the like to dowels and then fit them into dowel holes for secure instal lation The bottom grille ass y will come off easily if its dowels are fitted into dowel holes without applying quick drying bond or the like AC電源コンセントから 電源...

Page 9: ...ムパネルASSYの外し方 a 2のネジ2本を外し レッグ2個を取り外します Fig 3 b 3のネジ12本を外します Fig 3 取り外す3のネジには矢印 が印刷されています c ボトムパネルASSYを引き出します Fig 3 d CB1 CB5を外し ボトムパネルASSYを取り外します Fig 3 Fig 3 Fig 2 Driver スピーカーユニット Connector コネクター 1 Leg レッグ Leg レッグ Bottom panel ass y ボトムパネルASSY 2 2 3 3 CB1 CB2 CB3 CB4 CB5 MAIN 1 P C B MAIN 2 P C B d 1のネジ4本を外し スピーカーユニットを引き出します Fig 2 e スピーカーユニットの端子に接続されているコネクターを外し ます Fig 2 d Remove 4 screws 1 and the...

Page 10: ...t be reused Be sure to use a new bushing in place of the removed used bushing b First insert a flatblade screwdriver at 2 dowel positions and push up the front panel ass y Fig 4 c Next using the metalblade or the like push the front panel ass y upward until it comes off Fig 4 Note Removing the front panel ass y with the flatblade screwdriver only without using the metalblade or the like may cause ...

Page 11: ...w bushing in place of the removed used bushing d Remove 4 screws 5 and then remove the rear cover Fig 5 Rear panel ass y リアパネルASSY Rear cover リアカバー Bushing ブッシュ 4 4 5 When Checking the P C B Connect all the connectors removed during disassem bly back to the original positions Spread the rubber sheet and cloth for insulation pur pose and place the bottom panel ass y front panel ass y and rear panel...

Page 12: ...T PJ1 VR1 VOLUME POWER AMP RY1 PROTECTION 3 2 10 9 12 B B IC2 Q5 6 7 8 Q2 4 9 12 R59 0 1 POWER SUPPLY D20 D1 AC5 F1 T1 POWER POWER INDICATOR SW1 B B 15 15 IC4 IC5 REGULATOR A N IC LIMITER Q10 11 RY2 JK1 SYSTEM CONTROL 1 3 2 S1 10 S2 IC1A IC6B IC1B DRIVER S3 S0 S4 5 7 L P F 12dB oct IC6A 3 1 AC IN YST FSW150 YST FSW050 ...

Page 13: ...T SYSTEM CONNECTOR VOLTAGE SELECTOR 220 240V 110 120V 1 8 WH BE YE BR BR BE BE RE YE WH BE RE BE WH AC2 BE WH AC1 LED LEDG 15 15 S2 E S3 S1 10 E S4 E SO PRT E3 R1A R1B 15 15 S4 E SO PRT E3 R1A R1B 15 15 AC5 B 15G B AC5 B 15G B S1 10 E AC IN BE SP SP WH S3 S2 15 15 LEDG LED E DRIVER WOOFER COM COM IN OUT IN OUT 1 8 1 12 1 8 B G models B G models B G models U C R T A L J models B G models PRINTED CI...

Page 14: ...TOR 1 8 WH BE YE BR YE WH BE RE BR BE RE BE WH AC2 BE WH AC1 LED LEDG 15 15 S2 E S3 S1 10 E S4 E SO PRT E3 R1A R1B 15 15 S4 E SO PRT E3 R1A R1B 15 15 AC5 B 15G B AC5 B 15G B S1 10 E AC IN BE SP SP WH BE S3 S2 15 15 LEDG LED E DRIVER WOOFER COM COM IN OUT IN OUT 1 8 1 12 1 8 OFF SYSTEM ON K B G models K B G models K B G models K B G models VOLTAGE SELECTOR 220 240V 110 120V U C R T A L J models Pow...

Page 15: ... 6 1 1 1 8 42 4 0 0 0 0 42 4 42 4 42 4 11 2 24 6 0 42 4 42 6 AC 62 4V V723510 JG 11 T FG64410 0 01 50 FG65122 22P s16 s17 L2 J502 O O O O PIN CONNECTION DIAGRAM OF TRANSISTORS DIODES AND ICS IC5 NJM79M15FA Voltage regulator COMMON OUTPUT INPUT INPUT OUTPUT COMMON IC4 NJM78M15FA Voltage regulator IC1 2 6 NJM4558L Dual operational amplifier 8 7 6 5 4 3 2 1 OUT 1 Vcc IN 2 IN 2 OUT 2 Vcc IN 1 IN 1 IC3...

Page 16: ... 0 0 0 2 0 2 0 1 8 34 3 15 0 1 2 1 2 34 8 34 7 0 0 V723510 JG 11 T FG64410 0 01 50 FG65122 22P s16 s17 L2 J502 O O O O PIN CONNECTION DIAGRAM OF TRANSISTORS DIODES AND ICS IC5 NJM79M15FA Voltage regulator COMMON OUTPUT INPUT INPUT OUTPUT COMMON IC4 NJM78M15FA Voltage regulator IC1 2 6 NJM4558L Dual operational amplifier 8 7 6 5 4 3 2 1 OUT 1 Vcc IN 2 IN 2 OUT 2 Vcc IN 1 IN 1 IC3 STK404 120 Power a...

Page 17: ...MIT LIGHT EMITTING MODULE LED DSPLY LED DISPLAY LED INFRD LED INFRARED MODUL RF MODULATOR RF PHOT CPL PHOTO COUPLER PHOT INTR PHOTO INTERRUPTER PHOT RFLCT PHOTO REFLECTOR PIN TEST PIN TEST POINT PLST RIVET PLASTIC RIVET R ARRAY RESISTOR ARRAY R CAR CARBON RESISTOR R CAR CHP CHIP RESISTOR R CAR FP FLAME PROOF CARBON RESISTOR R FUS FUSABLE RESISTOR R MTL CHP CHIP METAL FILM RESISTOR R MTL FLM METAL ...

Page 18: ...LAR 0 47uF 50V 150 マイラーコン 01 C17 UR838100 C EL 100uF 16V 150 ケミコン 01 C18 FG644100 C CE 0 01uF 50V 150 セラコン 01 C19 UR838100 C EL 100uF 16V 150 ケミコン 01 C20 UA654150 C MYLAR 0 015uF 50V J 150 マイラーコン 01 C21 22 UR837470 C EL 47uF 16V 150 ケミコン 01 C23 26 UR867220 C EL 22uF 50V 150 ケミコン 01 C27 FG652100 C CE 100pF 50V 150 セラコン 01 C28 UA654150 C MYLAR 0 015uF 50V J 150 マイラーコン 01 C29 UA654100 C MYLAR 0 01uF ...

Page 19: ...42300 JACK PIN 1P MSP 241V2 150 ピンジャック 02 PN1 2 WB543700 PIN WB54370 L 70 18 150 スタイルピン Q2 iC287820 TR 2SC2878 A B 150 トランジスタ 01 Q4 iC287820 TR 2SC2878 A B 150 トランジスタ 01 Q5 iC1815I0 TR 2SC1815 Y 150 トランジスタ 01 Q6 iA1015I0 TR 2SA1015 Y 150 トランジスタ 01 Q7 iC1815I0 TR 2SC1815 Y 150 トランジスタ 01 Q8 iA1015I0 TR 2SA1015 Y 150 トランジスタ 01 Q9 10 iC224030 TR 2SC2240 GR BL 150 トランジスタ 01 Q11 iA097030 TR 2SA970 GR BL...

Page 20: ...YLAR 0 47uF 50V 050 マイラーコン 01 C17 UR838100 C EL 100uF 16V 050 ケミコン 01 C18 FG644100 C CE 0 01uF 50V 050 セラコン 01 C19 UR838100 C EL 100uF 16V 050 ケミコン 01 C20 UA654150 C MYLAR 0 015uF 50V J 050 マイラーコン 01 C21 22 UR837470 C EL 47uF 16V 050 ケミコン 01 C23 26 UR867220 C EL 22uF 50V 050 ケミコン 01 C27 FG652100 C CE 100pF 50V 050 セラコン 01 C28 UA654150 C MYLAR 0 015uF 50V J 050 マイラーコン 01 C29 UA654100 C MYLAR 0 01uF...

Page 21: ...50 ピンジャック 02 PN1 2 WB543700 PIN WB54370 L 70 18 050 スタイルピン Q2 iC287820 TR 2SC2878 A B 050 トランジスタ 01 Q4 iC287820 TR 2SC2878 A B 050 トランジスタ 01 Q5 iC1815I0 TR 2SC1815 Y 050 トランジスタ 01 Q6 iA1015I0 TR 2SA1015 Y 050 トランジスタ 01 Q7 iC1815I0 TR 2SC1815 Y 050 トランジスタ 01 Q8 iA1015I0 TR 2SA1015 Y 050 トランジスタ 01 Q9 10 iC224030 TR 2SC2240 GR BL 050 トランジスタ 01 Q11 iA097030 TR 2SA970 GR BL 050 トランジスタ 01 Q12 13 iC22403...

Page 22: ...1 202 203 204 x 2 205 203 204 205 205 YST FSW150 1 Used bushing once removed cannot be reused Be sure to use a new bushing in place of the removed used bushing 一度外した古いブッシュは使用できません 古いブッシュを外した場合 新しいブッシュに交換してください 2 Packing B C and D are not available as re placement parts To replace packing B C and D use packing A and cut it to each length of packing as speci fied below パッキンB C Dはサービス部品として供 給できません パッ...

Page 23: ...873800 REAR PANEL J リアパネル 4 11 WK873900 REAR PANEL UC リアパネル 4 11 WK874300 REAR PANEL RL リアパネル 4 11 WK874000 REAR PANEL T リアパネル 4 11 WK874100 REAR PANEL A リアパネル 4 11 WK874200 REAR PANEL BG リアパネル 4 13 WK872900 REAR COVER リアカバー 4 14 WC736000 BUSH ブッシュ 01 4 15 WK917100 PACKING F 96x62x1 パッキン F 4 20 WF268000 BIND HEAD P TIGHT SCREW 3x10 MFZN2B3 バインドPタイトネジ 01 5 WM038800 BOTTOM GRILLE ASS Y ボトムグリルASSY 8 ...

Page 24: ...R J 電源トランス s 8 4 X9202A00 POWER TRANSFORMER UC 電源トランス s 8 4 X9203A00 POWER TRANSFORMER RL 電源トランス s 8 4 X9204A00 POWER TRANSFORMER TK 電源トランス s 8 4 X9205A00 POWER TRANSFORMER A 電源トランス s 8 4 X9206A00 POWER TRANSFORMER BG 電源トランス 8 11 WK875500 BOTTOM PANEL JUCTKABG ボトムパネル 8 11 WK875600 BOTTOM PANEL RL ボトムパネル 8 19 WK916500 PACKING A 270x6x1 パッキン A 8 26 WF874300 GASKET RL ガスケット 8 31 WE994800 BIND HEAD S ...

Page 25: ...HT SCREW 3x8 MFZN2B3 バインドBタイトネジ 01 37 WE971200 BIND HEAD TAPPING SCREW 3x16 MFZN2B3 バインドTPネジ 01 ACCESSORIES 付属品 201 WB918400 SUBWOOFER CABLE 1P 5m 1pc サブウーファーケーブル 06 202 WB918300 SYSTEM CONTROL CABLE 1P 5m 1pc システム接続ケーブル 06 203 WB365800 NONSKID PAD M32 t2 4pcs set 滑止パッド 04 New Parts 新規部品 Ref No Part No Description Remarks Markets 部 品 名 ランク ...

Page 26: ...YST FSW150 YST FSW050 ...

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