Sony SA-WG99 Service Manual
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Sony SA-WG99 Service Manual

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SERVICE MANUAL
Ver. 1.0 2007.01
• SA-WG99 is the sub woofer section
in MHC-GX99.
Sony Corporation
9-887-535-01
Home Audio Division
2007A16-1
Published by Sony Techno Create Corporation
© 2007.01

SPECIFICATIONS

Speaker system: bass-reflex type
Speaker units
Woofer: 20 cm, cone type
Nominal impedance: 6 Ω
Power requirement:
North American model: AC 120 V, 60 Hz
Power consumption:
US model: 115 W
Canadian model: 155 VA
Dimensions (w/h/d): Approx. 280 × 306 × 405 mm
Mass: Approx. 8.7 kg
Design and specifications are subject to change without notice.
SA-WG99
Canadian Model
ACTIVE SUBWOOFER
US Model

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  • Page 1 SA-WG99 SERVICE MANUAL US Model Canadian Model Ver. 1.0 2007.01 • SA-WG99 is the sub woofer section in MHC-GX99. SPECIFICATIONS Speaker system: bass-reflex type Speaker units Woofer: 20 cm, cone type Nominal impedance: 6 Ω Power requirement: North American model: AC 120 V, 60 Hz...
  • Page 2 THE PARTS LIST ARE CRITICAL TO SAFE OPERATION. FONCTIONNEMENT. NE REMPLACER CES COM- POSANTS REPLACE THESE COMPONENTS WITH SONY PARTS WHOSE QUE PAR DES PIÈCES SONY DONT LES NUMÉROS SONT PART NUMBERS APPEAR AS SHOWN IN THIS MANUAL OR DONNÉS DANS CE MANUEL OU DANS LES SUPPLÉMENTS IN SUPPLEMENTS PUBLISHED BY SONY.
  • Page 3 SA-WG99 SECTION 1 DIAGRAMS THIS NOTE IS COMMON FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS. (In addition to this, the necessary note is printed in each block.) Note on Printed Wiring Boards: Note on Schematic Diagrams: • All capacitors are in µF unless otherwise noted. (p: pF) 50 •...
  • Page 4 SA-WG99 • IC Block Diagram – MAIN Board – IC400 STK404-130S Power STAGE Bias Pre DRIVER –...
  • Page 5 SA-WG99 • See page 3 for Circuit Boards Location. 1-1. PRINTED WIRING BOARDS — MAIN SECTION — • :Uses unleaded solder. POWER BOARD • Semiconductor CN702 MAIN BOARD INPUT BOARD Location (Page 7) (CHASSIS) Ref. No. Location SPEAKER D300 J100...
  • Page 6 SA-WG99 1-2. SCHEMATIC DIAGRAM — MAIN SECTION — • See page 4 for IC Block Diagram. MAIN BOARD R213 2.2k R202 100k 11.5 Q200 2SC3052EF-T1-LEF BUFFER R206 R208 C200 11.5 Q202 C202 C203 Q201 2SC3052EF-T1-LEF 0.22 R205 0.22 2SC3052EF-T1-LEF 3.3k BUFFER 11.5...
  • Page 7 SA-WG99 • See page 3 for Circuit Boards Location. 1-3. PRINTED WIRING BOARDS — POWER SECTION — • :Uses unleaded solder. POWER BOARD MAIN BOARD CN600 (Page 5) CN702 A002 T700 POWER TRANSFORMER AC IN JW702 replaceable Built in transformer...
  • Page 8 SA-WG99 1-4. SCHEMATIC DIAGRAM — POWER SECTION — POWER BOARD T700 POWER TRANSFORMER POWER SWITCH BOARD CN702 F700 FH700 FH701 AC-1 S700 T6.3AL/ 250V AC-1 SUBWOOFER ON/OFF MAIN BOARD F701 FH703 FH702 CN600 AC-1 CN701 (Page 6) CN700 T6.3AL/ 250V...
  • Page 9 SA-WG99 SECTION 2 EXPLODED VIEWS NOTE: • -XX and -X mean standardized parts, so they • The mechanical parts with no reference The components identified by mark 0 or may have some difference from the original number in the exploded views are not supplied.

  • Page 10: Electrical Parts List

    SA-WG99 SECTION 3 INPUT MAIN ELECTRICAL PARTS LIST NOTE: • Due to standardization, replacements in the • COILS When indicating parts by reference number, uH: µH parts list may be different from the parts please include the board name. specified in the diagrams or the components •...
  • Page 11 SA-WG99 MAIN POWER POWER SWITCH VOL-LED Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark < RESISTOR > R524 1-249-393-11 CARBON 1/4W R525 1-216-833-11 METAL CHIP 1/10W R200 1-216-845-11 METAL CHIP 100K 1/10W R526 1-216-829-11 METAL CHIP 4.7K...
  • Page 12 SA-WG99 VOL-LED Ref. No. Part No. Description Remark < RESISTOR > R300 1-216-823-11 METAL CHIP 1.5K 1/10W < VARIABLE RESISTOR > RV300 1-225-483-21 RES, VAR, CARBON (SUBWOOFER LEVEL) ************************************************************* MISCELLANEOUS ************** 1-787-344-11 FAN, DC 1-830-190-11 CORD, POWER 0 F700 1-532-325-00 FUSE, TIME-LAG 6.3AL/250V 0 F701 1-532-325-00 FUSE, TIME-LAG 6.3AL/250V...
  • Page 13 SA-WG99 MEMO...
  • Page 14 SA-WG99 REVISION HISTORY Clicking the version allows you to jump to the revised page. Also, clicking the version at the upper right on the revised page allows you to jump to the next revised page. Ver. Date Description of Revision...

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