Yamaha YST-SW005 Service Manual
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YST-SW005
CONTENTS
TO SERVICE PERSONNEL .......................................... 1
1 0 0 7 9 9

SUBWOOFER SYSTEM

........................................ 1
...................................... 2
................. 2
......................................... 3
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.
CONFIRMATION OF AUTO STANDBY
OPERATION
............................................... 9~15
YST-SW005
................. 4
5
.................... 6~7
.............................. 8
P.O.Box 1, Hamamatsu, Japan

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Summary of Contents for Yamaha YST-SW005

  • Page 1: Table Of Contents

    YST-SW005 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

    If you come in contact with solder or components located inside the enclosure of this product, wash your hands before handling food. SPECIFICATIONS Power Consumption Type ..Advanced Yamaha Active Servo Technology U, C, R, T, K, A, B, G models ......60 W J model ..............32 W Output Power J, U, C models ....
  • Page 3: Internal View

    YST-SW005 • DIMENSIONS INTERNAL VIEW (1-1/4") 200 (7-7/8") 335 (13-3/16") 8 (5/16") 375 (14-3/4") Unit : mm (inch) 1 MAIN P. C. B. (3) 5 MAIN P. C. B. (4) 2 MAIN P. C. B. (2) 6 MAIN P. C. B. (5) 3 MAIN P.
  • Page 4: Rear Panels

    – – OUTPUT OUTPUT TO SPEAKERS TO SPEAKERS POWER POWER MODEL NO. YST-SW005 120 VOLTS 60 WATTS 60Hz MODEL NO. YST-SW005 MODEL NO. YST-SW005 110 - 120/220 - 240 VOLTS MADE IN CHINA 60 WATTS 50/60Hz 100 V 32 W 50/60Hz SER.
  • Page 5: Disassembly Procedures

    YST-SW005 DISASSEMBLY PROCEDURES (Remove parts in the order as numbered.) For exchanging the driver unit 1. Removal of Front Grille The front grille is fixed to the cabinet with dowels at 6 locations. As a screwdriver (for slotted head screw) is used for removal, use special care not to cause damage to the cabinet.
  • Page 6: Confirmation Of Auto Standby Operation

    YST-SW005 Precaution for installation of power cord After connecting the power cord, be sure to apply the rapid cures bond (such as 5 minutes epoxy) at the cord stopper to prevent the air leakage as shown in Fig. 4. Apply rapid cures bond...
  • Page 7: Printed Circuit Board

    YST-SW005 PRINTED CIRCUIT BOARD (Component side) To MAIN (4) MAIN P. C. B. (1) VOLTAGE SELECTOR 220V-240V 110V-120V To MAIN (5) R, T, K models • Semiconductor Location Ref. No. Location From MAIN (5) SUBO To MAIN (6) AUTO STANDBY OPERATION 1kΩ...
  • Page 8: Printed Circuit Board

    YST-SW005 PRINTED CIRCUIT BOARD (Component side) MAIN P. C. B. (6) To MAIN (1) From MAIN (1) SWH1 SWH2 MAIN MAIN P. C. B. (3) HIGH CUT HIGH VOLUME From MAIN (1) POWER MAIN P. C. B. (4) MAIN P. C. B. (2)
  • Page 9: Schematic Diagram

    YST-SW005 SCHEMATIC DIAGRAM MAIN (2) MAIN (1) POWER AMP. 14.3 -14.3 LIMITTER 13.2 -13.2 PROTECTION IC2 : STK404-050AF AF Power Amp. -1.5 MAIN (3) 13.2 14.3 -13.2 -14.3 AUTO POWER ON/OFF CIRCUIT MAIN (6) R, T, K models 33.2 14.3 14.8...
  • Page 10: Parts List

    YST-SW005 PARTS LIST ELECTRICAL PARTS 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 11 YST-SW005 P. C. B. MAIN New Parts...
  • Page 12 YST-SW005 P. C. B. MAIN New Parts...
  • Page 13 YST-SW005 P. C. B. MAIN New Parts...
  • Page 14: Exploded View

    EXPLODED VIEW R, T, K models...
  • Page 15 YST-SW005 MECHANICAL PARTS New Parts...
  • Page 16 YST-SW005 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. YST-SW005 1.0 Ω 3100 3100 10 kΩ 7100 7100 HJ35 HF85 HF45 HF45 1.8 Ω 3180 11 kΩ...

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