Service Manual
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..., are already known and understood by the users, and have accumulated by YAMAHA and may have therefore not been restated. Should any form. YST-FSW150/ YST-FSW050 SUBWOOFER SYSTEM YST-FSW150/YST-FSW050 SERVICE MANUAL • YST-FSW150 • YST-FSW050 IMPORTANT NOTICE This manual has been provided for the use of YAMAHA are subject to change without permission. It has been assumed that any...
..., are already known and understood by the users, and have accumulated by YAMAHA and may have therefore not been restated. Should any form. YST-FSW150/ YST-FSW050 SUBWOOFER SYSTEM YST-FSW150/YST-FSW050 SERVICE MANUAL • YST-FSW150 • YST-FSW050 IMPORTANT NOTICE This manual has been provided for the use of YAMAHA are subject to change without permission. It has been assumed that any...
Service Manual
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... ANY REASON WHATSOEVER! When soldering, do not inhale solder fumes or expose eyes to each solder. 2 Among some types of the P.C.B.s installed in both polarities. YST-FSW150/ YST-FSW050 YST-FSW150/YST-FSW050 I TO SERVICE PERSONNEL 1. WALL OUTLET EQUIPMENT UNDER TEST AC LEAKAGE TESTER OR EQUIVALENT INSULATING TABLE G Leakage current must be sure to use a soldering iron suitable...
... ANY REASON WHATSOEVER! When soldering, do not inhale solder fumes or expose eyes to each solder. 2 Among some types of the P.C.B.s installed in both polarities. YST-FSW150/ YST-FSW050 YST-FSW150/YST-FSW050 I TO SERVICE PERSONNEL 1. WALL OUTLET EQUIPMENT UNDER TEST AC LEAKAGE TESTER OR EQUIVALENT INSULATING TABLE G Leakage current must be sure to use a soldering iron suitable...
Service Manual
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... improvements. I SPECIFICATIONS Type Advanced Yamaha Active Servo Technology II Output Power / ग़ྗ (100 Hz, 5 ohms, 10% T.H.D.) [YST-FSW150 75 W [YST-FSW050 50 W Dynamic Power 5 ohms) [YST-FSW150 130 W [YST-FSW050 100 W Input Sensitivity 50 Hz, 75 W / 5 ohms, INPUT (PJ)) [YST-FSW150 100 mV [YST-FSW050 50 mV Input Impedance INPUT (PJ 12 k-ohms Frequency Response YST-FSW150 30 Hz to 160 Hz [YST-FSW050 35 Hz to 160...
... improvements. I SPECIFICATIONS Type Advanced Yamaha Active Servo Technology II Output Power / ग़ྗ (100 Hz, 5 ohms, 10% T.H.D.) [YST-FSW150 75 W [YST-FSW050 50 W Dynamic Power 5 ohms) [YST-FSW150 130 W [YST-FSW050 100 W Input Sensitivity 50 Hz, 75 W / 5 ohms, INPUT (PJ)) [YST-FSW150 100 mV [YST-FSW050 50 mV Input Impedance INPUT (PJ 12 k-ohms Frequency Response YST-FSW150 30 Hz to 160 Hz [YST-FSW050 35 Hz to 160...
Service Manual
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...'y. (Fig. 1) c. As a flatblade screwdriver is fixed to the cabinet ass'y. Next, using the metalblade or the like may cause damage to the bottom grille ass'y. YST-FSW150/ YST-FSW050 YST-FSW150/YST-FSW050 I DISASSEMBLY PROCEDURES Disconnect the power cable from the AC outlet. • Required tools • Flatblade screwdriver • Metalblade or the like (with the flatblade screwdriver...
...'y. (Fig. 1) c. As a flatblade screwdriver is fixed to the cabinet ass'y. Next, using the metalblade or the like may cause damage to the bottom grille ass'y. YST-FSW150/ YST-FSW050 YST-FSW150/YST-FSW050 I DISASSEMBLY PROCEDURES Disconnect the power cable from the AC outlet. • Required tools • Flatblade screwdriver • Metalblade or the like (with the flatblade screwdriver...
Service Manual
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.... (Fig. 2) E 1 JHʣ F JHʣ 1 Driver $POOFDUPS ίωΫλʔ Fig. 2 2. Remove CB1-5 and then remove the bottom panel ass'y. (Fig. 3) MAIN (1) P.C.B. MAIN (2) P.C.B. YST-FSW150/ YST-FSW050 YST-FSW150/YST-FSW050 d. Remove 12 screws (3). (Fig. 3) * Screws (3) are identified with arrow marks ( ). CB5 CB3 CB1 CB2 CB4 44:ͷ֎͠ํ B 2 JHʣ C 3 JHʣ ˞...
.... (Fig. 2) E 1 JHʣ F JHʣ 1 Driver $POOFDUPS ίωΫλʔ Fig. 2 2. Remove CB1-5 and then remove the bottom panel ass'y. (Fig. 3) MAIN (1) P.C.B. MAIN (2) P.C.B. YST-FSW150/ YST-FSW050 YST-FSW150/YST-FSW050 d. Remove 12 screws (3). (Fig. 3) * Screws (3) are identified with arrow marks ( ). CB5 CB3 CB1 CB2 CB4 44:ͷ֎͠ํ B 2 JHʣ C 3 JHʣ ˞...
Service Manual
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... ϔϥ Front panel ass'y 44: 10 Fig. 4 a. When installing the front panel ass'y, apply quick-drying bond or the like to the cabinet ass'y. YST-FSW150/ YST-FSW050 YST-FSW150/YST-FSW050 3. Removal of the removed used for secure installation. (The front panel ass'y will come off . (Fig. 4) Note: • • Removing the front panel ass'y with...
... ϔϥ Front panel ass'y 44: 10 Fig. 4 a. When installing the front panel ass'y, apply quick-drying bond or the like to the cabinet ass'y. YST-FSW150/ YST-FSW050 YST-FSW150/YST-FSW050 3. Removal of the removed used for secure installation. (The front panel ass'y will come off . (Fig. 4) Note: • • Removing the front panel ass'y with...
Service Manual
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b. Remove the rear panel ass'y. (Fig. 5) c. YST-FSW150/ YST-FSW050 YST-FSW150/YST-FSW050 4. Remove 8 screws (4). (Fig. 5) * Screws (4) are identified with arrow marks ( ). bly back to use a new bushing in place of rear panel ass'y a. Be sure to the ...
b. Remove the rear panel ass'y. (Fig. 5) c. YST-FSW150/ YST-FSW050 YST-FSW150/YST-FSW050 4. Remove 8 screws (4). (Fig. 5) * Screws (4) are identified with arrow marks ( ). bly back to use a new bushing in place of rear panel ass'y a. Be sure to the ...
Service Manual
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YST-FSW150/ YST-FSW050 YST-FSW150/YST-FSW050 I BLOCK DIAGRAM YST-FSW150/YST-FSW050 INPUT S1 PJ1 IC1A 6S2 5 + 7 VR1 VOLUME S3 L.P.F. 6dB/oct 3 + IC1B 1 2- IC6A 3+ 1 - L.P.F. 12dB/oct IC6B 5+ 7 - H.P.F. 12dB/oct POWER AMP. +B RY1 S4 3 10 - 12 S0 2 IC3 + 9 -B A.N.IC IC2 DRIVER WOOFER + R59 0.1 SYSTEM CONTROL +10 JK1 DRIVER Q10,11 AC IN LIMITER Q5,6,7,8 RY2 POWER SW1 +B F1 T1 POWER SUPPLY D20 AC5 IC4 REGULATOR IC5 D1 -B POWER INDICATOR PROTECTION Q2,4,9,12 +15 -15 12
YST-FSW150/ YST-FSW050 YST-FSW150/YST-FSW050 I BLOCK DIAGRAM YST-FSW150/YST-FSW050 INPUT S1 PJ1 IC1A 6S2 5 + 7 VR1 VOLUME S3 L.P.F. 6dB/oct 3 + IC1B 1 2- IC6A 3+ 1 - L.P.F. 12dB/oct IC6B 5+ 7 - H.P.F. 12dB/oct POWER AMP. +B RY1 S4 3 10 - 12 S0 2 IC3 + 9 -B A.N.IC IC2 DRIVER WOOFER + R59 0.1 SYSTEM CONTROL +10 JK1 DRIVER Q10,11 AC IN LIMITER Q5,6,7,8 RY2 POWER SW1 +B F1 T1 POWER SUPPLY D20 AC5 IC4 REGULATOR IC5 D1 -B POWER INDICATOR PROTECTION Q2,4,9,12 +15 -15 12
Service Manual
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... G2 Q13 H1 D19 H3 Q14 I1 D20 F2 CB4 SP- A B 1 I PRINTED CIRCUIT BOARDS MAIN (3) P.C.B. (Side A) VOLUME 2 1 8 S3 3 E S2 +15 -15 LEDG LED IC1 W2 C D E F G YST-FSW150 MAIN (1) P.C.B. (Side A) POWER OFF/SYSTEM ON Power indicator IC3 12 H B, G models 1 W3A WH W3B BE IC2 8 1 W10A3 W10A2 W10A1 W9 W8 MAIN (2) P.C.B. (Side A) 4 BE WH... A) R, L models WH YE RE BR BE BE W11B W7B W12B W13B W14B W6B W6B W7B AC5 -B 15G +B -15 +15 R1B R1A E3 PRT SO E S4 I J YST-FSW150/YST-FSW050 • Semiconductor Location Ref no .
... G2 Q13 H1 D19 H3 Q14 I1 D20 F2 CB4 SP- A B 1 I PRINTED CIRCUIT BOARDS MAIN (3) P.C.B. (Side A) VOLUME 2 1 8 S3 3 E S2 +15 -15 LEDG LED IC1 W2 C D E F G YST-FSW150 MAIN (1) P.C.B. (Side A) POWER OFF/SYSTEM ON Power indicator IC3 12 H B, G models 1 W3A WH W3B BE IC2 8 1 W10A3 W10A2 W10A1 W9 W8 MAIN (2) P.C.B. (Side A) 4 BE WH... A) R, L models WH YE RE BR BE BE W11B W7B W12B W13B W14B W6B W6B W7B AC5 -B 15G +B -15 +15 R1B R1A E3 PRT SO E S4 I J YST-FSW150/YST-FSW050 • Semiconductor Location Ref no .
Service Manual
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Location Ref no . DRIVER SP+ WOOFER C56 K, B, G models G3 W10B3 W10B2 W10B1 W10B3 W10B2 W10B1 A B C YST-FSW150/YST-FSW050 1 MAIN (3) P.C.B. (Side A) VOLUME 2 1 IC1 W2 8 S3 3 E S2 +15 -15 LEDG LED D E F G YST-FSW050 MAIN (1) P.C.B. (Side A) POWER 12 OFF/SYSTEM ON Power indicator H K, B, G models IC3 1 W3A WH W3B BE IC2 8 1 W10A3 W10A2 W10A1 W9 W8 MAIN (2) P.C.B. (Side A) 4 U, C, R, T, A, L, J models K, B, G models...
Location Ref no . DRIVER SP+ WOOFER C56 K, B, G models G3 W10B3 W10B2 W10B1 W10B3 W10B2 W10B1 A B C YST-FSW150/YST-FSW050 1 MAIN (3) P.C.B. (Side A) VOLUME 2 1 IC1 W2 8 S3 3 E S2 +15 -15 LEDG LED D E F G YST-FSW050 MAIN (1) P.C.B. (Side A) POWER 12 OFF/SYSTEM ON Power indicator H K, B, G models IC3 1 W3A WH W3B BE IC2 8 1 W10A3 W10A2 W10A1 W9 W8 MAIN (2) P.C.B. (Side A) 4 U, C, R, T, A, L, J models K, B, G models...
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A B C D E F G H I J K L M N SCHEMATIC DIAGRAMS YST-FSW150 MAIN 1 YST-FSW150/YST-FSW050 MAIN (1) POWER AMP. IC3 0 0.2 0.2 -42.1 +14.8 +1.8 +1.2 -1.1 -42.6 +42.4 0 0 OUT1 +IN1 -IN1 -Vcc +IN2 -IN2 OUT2 +Vcc 2 +42.4 +42.4 +42.4 -11.2 0 0 3 INPUT JK1 SYSTEM CONNECTOR 4 L.P.F. +14.8 0 ...
A B C D E F G H I J K L M N SCHEMATIC DIAGRAMS YST-FSW150 MAIN 1 YST-FSW150/YST-FSW050 MAIN (1) POWER AMP. IC3 0 0.2 0.2 -42.1 +14.8 +1.8 +1.2 -1.1 -42.6 +42.4 0 0 OUT1 +IN1 -IN1 -Vcc +IN2 -IN2 OUT2 +Vcc 2 +42.4 +42.4 +42.4 -11.2 0 0 3 INPUT JK1 SYSTEM CONNECTOR 4 L.P.F. +14.8 0 ...
Service Manual
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... D3SBA20 4A 200V 1 2 34 NJM4558L 1 NJM78M15FA NJM79M15FA STK404-120 8 12 3: IN 3: COM 1: OUT 2: COM 1: OUT 2: IN 1 V723510 JG-11-T FG64410 0.01/50 FG65122 22P O O A B C D E F G H I J K L M N YST-FSW150/YST-FSW050 1 MAIN YST-FSW050 2 INPUT 3 JK1 SYSTEM CONNECTOR 4 L.P.F. +15.0 0 IC1 0 0 5 MAIN (3) 6 (R, L models) MAIN (8) W11B POWER TRANSFORMER W7B W10B1 W12B 7 W13B W10B2 W14B W6B W10B3 W6A 8 W7A MAIN (6) CB12 CB11...
... D3SBA20 4A 200V 1 2 34 NJM4558L 1 NJM78M15FA NJM79M15FA STK404-120 8 12 3: IN 3: COM 1: OUT 2: COM 1: OUT 2: IN 1 V723510 JG-11-T FG64410 0.01/50 FG65122 22P O O A B C D E F G H I J K L M N YST-FSW150/YST-FSW050 1 MAIN YST-FSW050 2 INPUT 3 JK1 SYSTEM CONNECTOR 4 L.P.F. +15.0 0 IC1 0 0 5 MAIN (3) 6 (R, L models) MAIN (8) W11B POWER TRANSFORMER W7B W10B1 W12B 7 W13B W10B2 W14B W6B W10B3 W6A 8 W7A MAIN (6) CB12 CB11...
Service Manual
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YST-FSW150/ YST-FSW050 YST-FSW150/YST-FSW050 I REPLACEMENT PARTS LIST • ELECTRICAL COMPONENT PARTS WARNING G Components having special characteristics are marked s and must be replaced with parts having specifications equal to those ...
YST-FSW150/ YST-FSW050 YST-FSW150/YST-FSW050 I REPLACEMENT PARTS LIST • ELECTRICAL COMPONENT PARTS WARNING G Components having special characteristics are marked s and must be replaced with parts having specifications equal to those ...
Service Manual
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... 2 8-1 (7) 23 8-4 205 9 205 37 23 Packing B 5 R, L models 8-19 *2 8-1 (8) 6 8-1 (6) Packing B 8-11 8-19 *2 8-1 (2) 8-26 23 23 8-37 8-11 9 8-34 36 8-32 8-32 8-31 8-37 7 22 placement parts. A B C D E YST-FSW150/YST-FSW050 1 • OVERALL ASS'Y YST-FSW150 *1 Used bushing, once removed, cannot be reused.
... 2 8-1 (7) 23 8-4 205 9 205 37 23 Packing B 5 R, L models 8-19 *2 8-1 (8) 6 8-1 (6) Packing B 8-11 8-19 *2 8-1 (2) 8-26 23 23 8-37 8-11 9 8-34 36 8-32 8-32 8-31 8-37 7 22 placement parts. A B C D E YST-FSW150/YST-FSW050 1 • OVERALL ASS'Y YST-FSW150 *1 Used bushing, once removed, cannot be reused.