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Yamaha YST- SW 012 Service Manual
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Yamaha YST- SW 012 Service Manual

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3 7 63 1515 0
TE
L 13942296513
I CONTENTS
TO SERVICE PERSONNEL .......................................... 2
SPECIFICATIONS .......................................................... 3
INTERNAL VIEW ........................................................... 4
REAR PANELS .......................................................... 5~6
DISASSEMBLY PROCEDURES ............................... 7~8
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http://www.xiaoyu163.com
YST-SW012
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i
2005
This manual is copyrighted by YAMAHA and may not be copied or
redistributed either in print or electronically without permission.
8
SUBWOOFER SYSTEM
SERVICE MANUAL
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:
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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:
BLOCK DIAGRAM ......................................................... 8
PRINTED CIRCUIT BOARD .......................................... 9
SCHEMATIC DIAGRAM .............................................. 10
PARTS LIST ........................................................... 11~15
.
All rights reserved.
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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
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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.
m
co
P.O.Box 1, Hamamatsu, Japan
9 9
2 8
9 9
'05.12

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Summary of Contents for Yamaha YST- SW 012

  • Page 1: Table Of Contents

    DISASSEMBLY PROCEDURES ....... 7~8 u163 2005 All rights reserved. 1 0 0 9 9 4 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 '05.12 http://www.xiaoyu163.com...

  • Page 2: To Service Personnel

    http://www.xiaoyu163.com YST-SW012 3 7 63 1515 0 AC LEAKAGE I TO SERVICE PERSONNEL WALL EQUIPMENT TESTER OR OUTLET UNDER TEST EQUIVALENT 1. Critical Components Information Components having special characteristics are marked s and must be replaced with parts having specifications equal to those originally installed.

  • Page 3: Specifications

    YST-SW012 3 7 63 1515 0 I SPECIFICATIONS Type ....Advanced Yamaha Active Servo Technology Accessories Nonskid pad x 4, Subwoofer Cable (5m) x 1 Output Power ..... 50 W (100 Hz, 5 ohms 10% T.H.D) Input Sensitivity ......50 mV (50 Hz, 50 W / 5 ohms) * Specifications are subject to change without notice due to Dynamic Power ..........

  • Page 4: Internal View

    http://www.xiaoyu163.com YST-SW012 3 7 63 1515 0 I INTERNAL VIEW MAIN (1) P.C.B. MAIN (3) P.C.B. MAIN (5) P.C.B. (U, C, A, B, G models) MAIN (4) P.C.B. (R, T, K, L models) MAIN (2) P.C.B. MAIN (9) P.C.B. (R, T, K, L models) Power Transformer MAIN (7) P.C.B.

  • Page 5: Rear Panels

    http://www.xiaoyu163.com YST-SW012 3 7 63 1515 0 I REAR PANELS U, C models R model Power Indicator Power Indicator T model K model L 13942296513 Power Indicator Power Indicator u163 http://www.xiaoyu163.com...
  • Page 6 http://www.xiaoyu163.com YST-SW012 3 7 63 1515 0 A model B, G models Power Indicator Power Indicator L model Power Indicator L 13942296513 u163 http://www.xiaoyu163.com...

  • Page 7: Disassembly Procedures

    http://www.xiaoyu163.com YST-SW012 3 7 63 1515 0 I DISASSEMBLY PROCEDURES (Remove parts in the order as numbered.) Disconnect the power cable from the AC outlet. 1. Removal of Front Grille Ass’y 2. Removal of Driver * The Front Grille Ass’y is fixed to the cabinet with dowels at 5 a.

  • Page 8: Block Diagram

    http://www.xiaoyu163.com YST-SW012 3 7 63 1515 0 When Checking the P.C.B.. • Connect all the connectors removed during disassembly back to the original positions. • Spread the Rubber Sheet and Cloth for insulation purpose and place the Rear Panel Ass’y on the Rubber Sheet and Cloth. (Fig. 2) Rubber Sheet and Cloth Fig.

  • Page 9: Printed Circuit Board

    http://www.xiaoyu163.com YST-SW012 MAIN (1) P.C.B. (Side A) 3 7 6 3 1 5 1 5 0 I PRINTED CIRCUIT BOARD Lead Free Solder Used MAIN (3) P.C.B. (Side A) DRIVER VOLUME • Semiconductor Location INPUT Ref. no. Location Ref. no. Location Ref.

  • Page 10: Schematic Diagram

    http://www.xiaoyu163.com YST-SW012 3 7 6 3 1 5 1 5 0 I SCHEMATIC DIAGRAM MAIN (3) MAIN (1) POWER AMP L.P.F. INPUT 35.1 -14.6 14.5 35.0 35.0 LIMITER -8.1 -14.6 14.5 L.P.F. H.P.F. DRIVER VOLUME -1.9 23.6 -14.5 A.N.I.C 14.5 -8.0 PROTECTION -30.7...

  • Page 11: Parts List

    http://www.xiaoyu163.com YST-SW012 3 7 63 1515 0 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. ABBREVIATIONS IN THIS LIST ARE AS FOLLOWS: C.A.EL.CHP : CHIP ALUMI.ELECTROLYTIC CAP L.EMIT...
  • Page 12 http://www.xiaoyu163.com YST-SW012 3 7 63 1515 0 P.C.B. MAIN P.C.B. MAIN Ref. No. Part No. Description Markets Ref. No. Part No. Description Markets WG587200 P.C.B. VD631600 DIODE 1SS133,176 WG587300 P.C.B. VD631600 DIODE 1SS133,176 WG587400 P.C.B. VD631600 DIODE 1SS133,176 WG587500 P.C.B. VG442500 DIODE.ZENR MTZJ24B WG587600 P.C.B.

  • Page 13: Ao Y U163

    http://www.xiaoyu163.com YST-SW012 3 7 63 1515 0 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...
  • Page 14 http://www.xiaoyu163.com YST-SW012 3 7 63 1515 0 I EXPLODED VIEW 4-34 R, T, K, L models 4-20 4-17 4-21 4-34 4-34 4-19 4-11 4-34 4-38 4-1 (9) 4-38 4-1 (3) 4-34 4-24 4-32 4-28 4-35 4-21 4-31 4-1 (1) 4-21 4-33 4-11 4-21...
  • Page 15 http://www.xiaoyu163.com YST-SW012 3 7 63 1515 0 I MECHANICAL PARTS Ref. Part No. Description Remarks Markets WG568200 CABINET ASS'Y WG568100 CABINET ASS'Y WG568000 CABINET ASS'Y X5399A00 DRIVER WOOFER 20cm 6Ω JA2025 WG569300 FRONT GRILLE ASS'Y CH,BL WG569200 FRONT GRILLE ASS'Y WG587200 P.C.B.
  • Page 16 http://www.xiaoyu163.com 3 7 63 1515 0 YST-SW012 L 13942296513 u163 http://www.xiaoyu163.com...

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