JVC SX-DW303 Service Manual
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SERVICE MANUAL
11
2003
MB082
1
PRECAUTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
2
SPECIFIC SERVICE INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5
3
DISASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6
4
ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-9
5
TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-10
POWERED SUBWOOFER
SX-DW303
TABLE OF CONTENTS
COPYRIGHT © 2003 VICTOR COMPANY OF JAPAN, LIMITED
Area Suffix
J ----------------- U.S.A.
Absolutly Free manuals
No.MB082
2003/11
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Summary of Contents for JVC SX-DW303
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Page 1: Table Of Contents
SERVICE MANUAL POWERED SUBWOOFER MB082 2003 SX-DW303 Area Suffix J ----------------- U.S.A. TABLE OF CONTENTS PRECAUTION............... . . 1-3 SPECIFIC SERVICE INSTRUCTIONS . - Page 2 www.freeservicemanuals.info Absolutly Free manuals SPECIFICATION Type Powered subwoofer Bass-reflex type, (magnetically shielded type) Speaker unit 16.0 cm (6 5/16 in.) cone ( × 1) Frequency range 30 Hz to 200 Hz Input impedance 50 kΩ (LOW-LEVEL) 470 Ω (HIGH-LEVEL) Input terminals INPUT 1 (LOW-LEVEL) INPUT 2 (HIGH-LEVEL) Power requirements...
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Page 3: Precaution
www.freeservicemanuals.info Absolutly Free manuals SECTION 1 PRECAUTION Safety Precautions (1) This design of this product contains special hardware and voltmeter. many circuits and components specially for safety purpos- Move the resistor connection to each exposed metal es. For continued protection, no changes should be made part, particularly any exposed metal part having a return to the original design unless authorized in writing by the path to the chassis, and measure the AC voltage across... - Page 4 www.freeservicemanuals.info Absolutly Free manuals Importance administering point on the safety Power switch board (Forward side) Caution: For continued protection against risk of fire, replace only with same type 3A/250V for F9001. This symbol specifies type of fast operating fuse. 1-4 (No.MB082)
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Page 5: Specific Service Instructions
www.freeservicemanuals.info Absolutly Free manuals SECTION 2 SPECIFIC SERVICE INSTRUCTIONS This service manual does not describe SPECIFIC SERVICE INSTRUCTIONS. (No.MB082)1-5... -
Page 6: Disassembly
www.freeservicemanuals.info Absolutly Free manuals SECTION 3 DISASSEMBLY Removing the amplifier assembly (See Figs.1 and 2) (1) Remove the eleven screws A attaching the amplifier as- Service cabinet sembly. (See Fig.1.) (2) Remove the amplifier assembly from the service cabinet. (See Fig.2.) (3) From the back side of the amplifier assembly, disconnect the wire from the wire connector. - Page 7 www.freeservicemanuals.info Absolutly Free manuals Removing the power cord Bracket (CORD) (See Figs.4 and 5) • Prior to performing the following procedures, remove the back panel. (1) Remove the two screw C attaching the bracket (CORD). (See Fig.4.) (2) Take out the bracket (CORD) toward this side. (3) Disconnect the power cord from the connector CN901.
- Page 8 www.freeservicemanuals.info Absolutly Free manuals Removing the stand (See Figs.7 and 8) (1) Remove the foot spacers. (See Fig.7.) (2) Remove the eight screws H attaching the stand. (See Fig.8.) (3) Remove the stand toward this side. Foot spacer Stand Stand Fig.8 Foot spacers Fig.7...
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Page 9: Adjustment
www.freeservicemanuals.info Absolutly Free manuals SECTION 4 ADJUSTMENT This service manual does not describe ADJUSTMENT. (No.MB082)1-9... -
Page 10: Troubleshooting
www.freeservicemanuals.info Absolutly Free manuals SECTION 5 TROUBLESHOOTING This service manual does not describe TROUBLESHOOTING. 1-10 (No.MB082) - Page 11 www.freeservicemanuals.info Absolutly Free manuals (No.MB082)1-11...
- Page 12 www.freeservicemanuals.info Absolutly Free manuals VICTOR COMPANY OF JAPAN, LIMITED AV & MULTIMEDIA COMPANY AUDIO/VIDEO SYSTEMS CATEGORY 10-1,1chome,Ohwatari-machi,Maebashi-city,371-8543,Japan (No.MB082) Printed in Japan...
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Page 13: Parts List
Absolutly Free manuals PARTS LIST [ SX-DW303 ] * All printed circuit boards and its assemblies are not available as service parts. Area suffix J -------------- Northern America - Contents - 3- 2 Exploded view of general assembly and parts list (Block No.M1) 3- 4 Electrical parts list (Block No.01) - Page 14 www.freeservicemanuals.info Absolutly Free manuals Exploded view of general assmbly and parts list...
- Page 15 www.freeservicemanuals.info Absolutly Free manuals General assembly Block No. [M][1][M][M] Symbol No. Part No. Part Name Description Local LV21341-002A SHIELD LV10709-002A COVER LV30225-044A SPACER (x4) LV30225-079A SPACER LV30225-0E4A SPACER LV30225-025A SPACER LV30225-0G8A SPACER QYSBSG3016E TAP SCREW M3 x 16mm(x2) QYSBSF3008Z SCREW 3mm x 8mm(x4) LV43179-002A BKT(SW)
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Page 16: Electrical Parts List
www.freeservicemanuals.info Absolutly Free manuals Electrical parts list Symbol No. Part No. Part Name Description Local Main board Block No. [0][1][0][0] D5006 1SS133-T2 DIODE Symbol No. Part No. Part Name Description Local D5007 MTZJ16B-T2 Z DIODE D5008 M1FL20U-X FR DIODE D5009 MTZJ18B-T2 Z DIODE Dual Operational... - Page 17 www.freeservicemanuals.info Absolutly Free manuals Symbol No. Part No. Part Name Description Local Symbol No. Part No. Part Name Description Local C1027 NCB31HK-103X C CAPACITOR 0.01uF 50V K C9503 NCB31HK-471X C CAPACITOR 470pF 50V K C1028 QETN1HM-475Z E CAPACITOR 4.7uF 50V M C9504 QETN1VM-107Z E CAPACITOR...
- Page 18 www.freeservicemanuals.info Absolutly Free manuals Symbol No. Part No. Part Name Description Local Symbol No. Part No. Part Name Description Local R5003 NRSA63J-103X MG RESISTOR 10kΩ 1/16W J R5729 NRSA63J-683X MG RESISTOR 68kΩ 1/16W J R5004 NRSA63J-103X MG RESISTOR 10kΩ 1/16W J R5730 NRSA63J-104X MG RESISTOR...
- Page 19 www.freeservicemanuals.info Absolutly Free manuals Symbol No. Part No. Part Name Description Local CN505 QGB2016K1-11 CONNECTOR B-B (1-11) CN901 QGA7901F2-02 CONNECTOR W-B (1-2) CN951 QGB2510J1-10 CONNECTOR B-B (1-10) CN952 QGB2016K1-05 CONNECTOR B-B (1-5) EP951 QNZ0136-001Z EARTH PLATE EP952 QNZ0136-001Z EARTH PLATE HS951 LV33802-001A HEAT SINK1...
- Page 20 www.freeservicemanuals.info Absolutly Free manuals Packing materials and accessories parts list Block No. A1,A2,A3,A4...
- Page 21 www.freeservicemanuals.info Absolutly Free manuals Packing and accessories Block No. [M][3][M][M] Symbol No. Part No. Part Name Description Local LVT0951-006A INST BOOK ENG FRE BT-51018-3 WARRANTY CARD YU20333 SAFETY INST. QAM0199-001 PIN CABLE LV43196-003B CAUTION SHEET SXDW303K-SPBOX SPEAKER BOX QPA02503503P POLY BAG 25cm x 35cm LV31492-047A CARTON...
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Page 22: Schematic Diagrams
Absolutly Free manuals SCHEMATIC DIAGRAMS POWERED SUBWOOFER SX-DW303 CD-ROM No.SML200311 Area suffix J ----------------------------- U.S.A. Contents Block diagram Standard schematic diagram 2-5 to 7 Printed circuit boards No.MB082SCH COPYRIGHT 2003 VICTOR COMPANY OF JAPAN, LTD. 2003/11... - Page 23 www.freeservicemanuals.info Absolutly Free manuals In regard with component parts appearing on the silk-screen printed side (parts side) of the PWB diagrams, the parts that are printed over with black such as the resistor ( ), diode ( ) and ICP ( ) or identified by the "...
- Page 24 www.freeservicemanuals.info Absolutly Free manuals < M E M O >...
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Page 25: Block Diagram
www.freeservicemanuals.info Absolutly Free manuals Block diagram Switch board PHASE SW VOLUME ON -- CANCEL NORMAL-- REVERSE CN151 W1001 Terminal board L.P FILTER / IN PUT L / H AMP PHASE / & H.P FIL TER A.H.B J1001 INPUT IC102 IC103 IC101 (LOW-LEVEL) IC103... - Page 26 www.freeservicemanuals.info Absolutly Free manuals Volume board Power switch board POWER MAIN PLUG IC501 Amp. VR501 W9001 to 4 Off set IC502 W9001 to 4 Comparator Regulator board POWER-SUPPLY IC503 CIRCUIT IC504 Driver T9501 VR502 IC951 TRANS. Carrier Freq. CN951 CN502 Amplifier board Q5902 Q5903 Q5904...
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Page 27: Standard Schematic Diagram
www.freeservicemanuals.info Absolutly Free manuals Standard schematic diagram S1501 C1502 0.0033 CN861 R8601 D8601 D8602 SPR325MVW QGA2001C1-08 S1001 VR101 CN151 20KB W1001 QJB001-080701 C1003 R1003 C1005 R1030 4.7/50 0.0022 5.6k R1005 IC102 BA15218F R1031 C1004 C1010 C1011 C1016 R1004 5.6k C1014 4.7/50 R1020 R1021... - Page 28 www.freeservicemanuals.info Absolutly Free manuals R5034 R5021 IC503 TC74HC00AF-W R5028 R5003 R5011 D5003 R5013 1SS133 R5036 4.7k Q5001 2SA1037AK IC501 IC502 BA15218F NJM311M-XE Q5002 C5913 C5914 2SC2412K Q5003 R5005 2SA1037AK R5014 R5023 IC504 10/16 10/16 VR501 4.7k TC74HC14AF-X R5007 R5012 R5027 R5008 C5916 C5915...
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Page 29: Printed Circuit Boards
www.freeservicemanuals.info Absolutly Free manuals Printed circuit boards Main board (1/3) (Terminal board) CN101 D1003 W1001 D1002 R1016 IC103 R1041 R1033 C1022 C1021 C1018 R1044 R1001 C1017 C1011 R1032 C1037 R1028 IC102 C1004 J1001 C1023 K1001 C1010 C1008 R1010 IC101 D1001 C1032 IC104 C1033... - Page 30 www.freeservicemanuals.info Absolutly Free manuals Main board (2/3) (Amplifier board) R5905 CN505 D5716 R5911 D5013 C5907 C5909 C5711 C5024 L5903 Q5904 D5911 Q5905 RY502 D5703 C5023 R5747 CN102 R5914 L5904 R5906 TH501 L5902 R5057 Q5903 C5908 R5702 R5912 R5743 CN502 R5701 C5022 R5744 L5001...
- Page 31 www.freeservicemanuals.info Absolutly Free manuals Main board (3/3) (Regulator board) EP951 C9512 C9511 C9509 R9518 R9522 C9508 C9507 Q9508 Q9509 R9519 R9523 D9510 D9509 R9526 R9525 Q9510 HS953 HS952 T9501 R9524 R9527 PC951 R9508 R9504 D9506 R9510 D9504 R9529 R9528 IC951 R9503 R9501 W9002...
- Page 32 www.freeservicemanuals.info Absolutly Free manuals < M E M O >...
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Page 33: No.mb082Sch
www.freeservicemanuals.info Absolutly Free manuals VICTOR COMPANY OF JAPAN, LIMITED AV & MULTIMEDIA COMPANY AUDIO/VIDEO SYSTEMS CATEGORY 10-1,1chome,Ohwatari-machi,Maebashi-city,371-8543,Japan Printed in Japan (No.MB082SCH)