JVC-SPDWF10-sub-sm 电路图 维修手册.pdf

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1、SERVICE MANUAL COPYRIGHT 2004 Victor Company of Japan, Limited No.MB251 2004/6 POWERED SUB WOOFER MB25120046 SP-DWF10 TABLE OF CONTENTS 1PRECAUTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3 2SP

2、ECIFIC SERVICE INSTRUCTIONS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5 3DISASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6 4A

3、DJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-9 5TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4、 . . 1-10 Area suffix J - U.S.A. A - Australia E - Continental Europe US - Singapore UF - China UP - Korea UT - Taiwan UX - Saudi Arabia UJ - U.S.Military RadioFans.CN 收音机爱 好者资料库 1-2 (No.MB251) SPECIFICATION Design and specifications are subject to change without notice. TypePowered Subwoofer Bass-r

5、eflex type (magnetically shielded type) Speaker16.0 cm cone 1 (6-5/16) Frequency Range32 Hz 200 Hz Impedance4 Input terminalsINPUT (LOW-LEVEL) Power requirementsAC 120 V , 60 Hz Output power of built-in amp100 W (45 Hz, 4 , 10 % THD) Power Handling Capacity25 W Dimensions (W H D)185 mm 374 mm 345 mm

6、 (7-5/16 14-3/4 13-5/8) Mass8.86 kg (19.6 lbs) RadioFans.CN 收音机爱 好者资料库 (No.MB251)1-3 SECTION 1 PRECAUTION 1.1Safety Precautions (1) This design of this product contains special hardware and many circuits and components specially for safety purpos- es. For continued protection, no changes should be m

7、ade to the original design unless authorized in writing by the manufacturer. Replacement parts must be identical to those used in the original circuits. Services should be per- formed by qualified personnel only. (2) Alterations of the design or circuitry of the product should not be made. Any desig

8、n alterations of the product should not be made. Any design alterations or additions will void the manufacturers warranty and will further relieve the manufacture of responsibility for personal injury or property damage resulting therefrom. (3) Many electrical and mechanical parts in the products ha

9、ve special safety-related characteristics. These characteris- tics are often not evident from visual inspection nor can the protection afforded by them necessarily be obtained by us- ing replacement components rated for higher voltage, watt- age, etc. Replacement parts which have these special safet

10、y characteristics are identified in the Parts List of Ser- vice Manual. Electrical components having such features are identified by shading on the schematics and by ( ) on the Parts List in the Service Manual. The use of a substitute replacement which does not have the same safety charac- teristics

11、 as the recommended replacement parts shown in the Parts List of Service Manual may create shock, fire, or other hazards. (4) The leads in the products are routed and dressed with ties, clamps, tubings, barriers and the like to be separated from live parts, high temperature parts, moving parts and/o

12、r sharp edges for the prevention of electric shock and fire hazard. When service is required, the original lead routing and dress should be observed, and it should be confirmed that they have been returned to normal, after reassem- bling. (5) Leakage shock hazard testing After reassembling the produ

13、ct, always perform an isola- tion check on the exposed metal parts of the product (an- tenna terminals, knobs, metal cabinet, screw heads, headphone jack, control shafts, etc.) to be sure the product is safe to operate without danger of electrical shock.Do not use a line isolation transformer during

14、 this check. Plug the AC line cord directly into the AC outlet. Using a Leakage Current Tester, measure the leakage current from each exposed metal parts of the cabinet, particular- ly any exposed metal part having a return path to the chassis, to a known good earth ground. Any leakage cur- rent mus

15、t not exceed 0.5mA AC (r.m.s.). Alternate check method Plug the AC line cord directly into the AC outlet. Use an AC voltmeter having, 1,000 per volt or more sensitivity in the following manner. Connect a 1,500 10W resistor paralleled by a 0.15F AC-type capacitor between an ex- posed metal part and a

16、 known good earth ground. Measure the AC voltage across the resistor with the AC voltmeter. Move the resistor connection to each exposed metal part, particularly any exposed metal part having a return path to the chassis, and measure the AC voltage across the resistor. Now, reverse the plug in the A

17、C outlet and repeat each measurement. Voltage measured any must not exceed 0.75 V AC (r.m.s.). This corresponds to 0.5 mA AC (r.m.s.). 1.2Warning (1) This equipment has been designed and manufactured to meet international safety standards. (2) It is the legal responsibility of the repairer to ensure

18、 that these safety standards are maintained. (3) Repairs must be made in accordance with the relevant safety standards. (4) It is essential that safety critical components are replaced by approved parts. (5) If mains voltage selector is provided, check setting for local voltage. 1.3Caution Burrs for

19、med during molding may be left over on some parts of the chassis. Therefore, pay attention to such burrs in the case of pre- forming repair of this system. 1.4Critical parts for safety In regard with component parts appearing on the silk-screen printed side (parts side) of the PWB diagrams, the part

20、s that are printed over with black such as the resistor ( ), diode ( ) and ICP ( ) or identified by the mark nearby are critical for safety. When replacing them, be sure to use the parts of the same type and rating as specified by the manufacturer. (This regulation dose not Except the J and C versio

21、n) Good earth ground Place this probe on each exposed metal part. AC VOLTMETER (Having 1000 ohms/volts, or more sensitivity) 1500 10W 0.15 F AC TYPE RadioFans.CN 收音机爱 好者资料库 1-4 (No.MB251) 1.5Importance administering point on the safety Caution: For continued protection against risk of fire, replace

22、only with same type 3 A/125 V for F901. This symbol specifies the type of fast operating fuse. Precaution: Pour la protection continue contre les risques dincendie, remplacer uniquement par le meme type: fusible 3 A/125 V pour les F901. Ce symbole specifie le type de fusible a action rapide. Power s

23、witch board F9001 (No.MB251)1-5 SECTION 2 SPECIFIC SERVICE INSTRUCTIONS This service manual does not describe SPECIFIC SERVICE INSTRUCTIONS. 1-6 (No.MB251) SECTION 3 DISASSEMBLY 3.1Removing the Amplifier assembly (See Figs.1 and 2) (1) From the back side of the main body, remove the eleven screws A

24、attaching the amplifier assembly. (See Fig.1.) (2) Take out the amplifier assembly from the main body. (3) Disconnect the wire connector from the back side of the amplifier assembly. (See Fig. 2.) (4) Disconnect the speaker wire from the speaker terminal. (See Fig.2.) 3.2Removing the back panel (See

25、 Figs.1 to 3) (1) From the back side of the main body, remove the eleven screws A attaching the amplifier assembly. (See Fig.1.) Reference: Remove the amplifier assembly from the main body as required. (See Fig.2.) (2) Remove the five screws B attaching the back panel. (See Fig.3.) Fig.1 Fig.2 Fig.3

26、 A A A Amplifier assembly A A Amplifier assembly Speaker terminal Wire connector B B (No.MB251)1-7 3.3Removing the power cord (See Figs.4 and 5) Prior to performing the following procedures, remove the back panel. (1) Remove the two screws C attaching the bracket a. (See Fig.4.) (2) Pull out the bra

27、cket a toward you. (3) Disconnect the power cord from the connector CN901 on the power switch board. (See Fig.5.) 3.4Removing the amplifier board assembly (Amp board, volume board, switch board) (See Figs.5 and 6) Prior to performing the following procedures, remove the back panel and the power cord

28、. Remove the amplifier assembly from the main body as re- quired. (See Figs.1 and 2.) (1) Remove the three screws D attaching the bracket b. (See Fig 5.) (2) Disconnect the wire from the connectors CN102 and CN503 on the amp board. (See Fig.5.) (3) Remove the amplifier board assembly from the connec

29、tors CN951 and CN952 on the regulator board. (See Fig.6.) (4) Take out the amplifier board assembly. 3.5Removing the power supply board assembly (Regula- tor board, power switch board) (See Fig.6) Prior to performing the following procedures, remove the back panel, power cord and amplifier board ass

30、embly. Remove the amplifier assembly from the main body as re- quired. (See Figs.1 and 2.) (1) Remove the screw E attaching the bracket c. (See Fig.6.) (2) Remove the two screws F and four screws G attaching the regulator board. (3) Take out the power supply board assembly. Fig.4 Fig.5 Fig.6 Bracket

31、 a Power cord C C Switch board Bracket b Amp board Volume board CN901 CN503 CN102 D D Power switch board Regulator board Power switch board Bracket c CN951 CN952 GG E F 1-8 (No.MB251) 3.6Removing the net assembly (See Fig 7) (1) From side of the main body, insert the tip of the flat-bladed screwdriv

32、er or similar tool into the space between the main body and net assembly, and lift the net assembly little by little to remove. (See Fig 7) Note: To prevent damaging the net assembly and main body, insert cushioning plates etc. and below the tip of the flat-bladed screwdriver or similar tool. From r

33、ight side of the main body, release the eight joints d, and take out the net assembly from the main body. (See Fig 7) Fig.7 3.7Removing the speaker. (See Fig 8 and Fig 9) Prior to performing the following procedures, remove the net assembly. (1) Remove the six screws H attaching the speaker. (Fig 8)

34、 (2) Take out the speaker from the main body. (3) Disconnect the wires from the terminal of the speaker. (See Fig 9) Fig.8 Fig.9 Net assembly Flat-bladed screwdriver,etc. Cushioning plate,etc. Main body H H Joint d (eight joints) Speaker Terminal Main body (No.MB251)1-9 SECTION 4 ADJUSTMENT This ser

35、vice manual does not describe ADJUSTMENT. 1-10 (No.MB251) SECTION 5 TROUBLESHOOTING This service manual does not describe TROUBLESHOOTING. (No.MB251)1-11 (No.MB251) AV & MULTIMEDIA COMPANY AUDIO/VIDEO SYSTEMS CATEGORY 10-1,1chome,Ohwatari-machi,Maebashi-city,371-8543,Japan Victor Company of Japan, L

36、imited WPC Printed in Japan SCHEMATIC DIAGRAMS No.MB251SCH 2004/6 SP-DWF10 Contents Block diagram Standard schematic diagram Printed circuit boards 2-1 2-2 2-3 to 4 CD-ROM No.SML200406 POWERED SUBWOOFER COPYRIGHT 2004 Victor Company of Japan, Limited. Area suffix J - U.S.A. A - Australia E - Contine

37、ntal Europe US - Singapore UF - China UP - Korea UT - Taiwan UX - Saudi Arabia UJ - U.S.Military 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 i

38、dentified by the mark nearby are critical for safety. (This regulation does not correspond to J and C version.) 2-1 Block diagram MAIN PLUG POWER CIRCUIT Amp board Switch board INPUT CN101 +B SPEAKER OUT IN MUTE MUTE RY502 W9001 to 4 W9001 to 4 IC104 1/2 AUTO POWER ON IC951 IC571 INV. Q5706 IC505 IN

39、V. IC506 DRV. Q5006 Q5007 REDGREEN INDICATOR Q5902 Q5903 Q5904 Q5905 REGULATOR +B LED CN501 CN503CN102 CN861 CN901 CN505 CN504 CANCEL / ON IC501 Amp. VR501 IC502 Comparator Off set VR502 Carrier Freq. POWER- SUPPLY Volume board Power switch board Regulator board IC104 2/2 LED CONT. IC101 1/2 AMP IC1

40、02 IC103 1/2 AMP IC103 2/2 AMP T9501 TRANS CN951 CN502 IC503 IC504 Driver J101 2-2 Parts are safety assurance parts. When replacing those parts make sure to use the specified one. Standard schematic diagram R1004 C1011 R1005 R1003 C1003 C1004 C1005 R5732 IC101 IC101 R5750 C1010 R1021R1020 R1015 R101

41、7 Q1002 Q1001 R1047 R1046C1023 Q5902 IC104 IC103 Q5903 K1001 R1030R1031 C1016 S1001 C1015 R5023 IC102 C1028 R1051 C1029 C1030 R1053 IC104 R1061 CN952 R1065 Q5706 Q1006 CN103 Q1007 S9001 C9005 RY502 IC103 R1040 C1020 Q5713 W9001 R9001 IC501 IC502 Q5001 Q5002 R5005 IC503 IC504 R5013 R5014 R5011 R5012

42、R5021 R5022 R5007 R5003 VR501 R5008 Q5003 R5027 R5028 C5015 R5036 D5003 R5034 D5905 C5915 C5913 C5916 C5914 D5906 Q5005 IC505 D5006 D5005 R5046 R5045 R5044 R9529 IC506 Q5721 R5048 R5050 R5049 R5916 D5009 D5010 Q5006 Q5007 R5055 R5056 Q5708 L5001 CN503 R5742 Q5901 R5901 Q5722 R5702 D5703 R5701 CN102

43、D5911 CN504 CN505 Q1003 Q5723 R5743 R5749 R5720 R1068 Q5712 R5721 R5723 D5706 D5707 R5729R5728 D5710 D5712 Q5709 Q5711 R5718 D1003 D5704 Q5707 D1002 Q5904 Q5905 L5904 L5903L5901 L5902 C1014R1032 IC571 Q5715 Q5716 R5731 Q5717Q5718Q5719 R5733 R5739 D5912 Q5720 F9001 T9501 EP952 TH901 D9001 IC951 D9506

44、 Q9504 D9503 D9504 R9508 W9001 D9502 D9501 LF901LF902 R9510 D9509 C9515 W9002 D9510 C9507 C9508 K5001 PC951 D9511 R9517 R5746 C9513 Q9508 D9512 C9514 Q9509 Q9510 D5717 C5711 CN861 R9503 R5915 EP951 R8601 D8601 D8602 D5013 R5059 IC102 C1013 R1028 R1044 R1064 W9002 W9003 W9004 W9003 W9004 J1001 R1023

45、R1022 R1048 R1002R1001 C1002C1001 C1009 C1008 R5024 C5007 R1050 R1052 C1027 C1031 Q1004 D1001 R1049 R1054 R1057 R1056 C1032 R1059 R1060 C5706 C5025 R1055 R1062 C1034 C1033 R1016 R9002 R1067 CN101 CN501 R1039 C1012 C1021 C5022 R5009 R5017R5018 C5005 R5015 R5016 C5006 R5010 C5004 C5001 R5002R5001 C500

46、2 R5006 R1041 C5008 C5009 R5026 Q5004 R5030 R5029 D5001D5002 R5032 C5003 R5020 C5010 C5011 C5012 C5013 C5014 D5004 R5039 R5035 R5031 R5038 VR502 R5037 R5033 R5025 R5019 IC591 IC592 R5043 R5041R5040 R5042 C5017 C5016 C5018 D5007 C5020 C5019 D5008 R5053R5054 C5021 D5011D5012 CN951 D5708 CN502 R5057 C5

47、903 C5904 C5901 C5902 C5918 C5905 D5901 R5902 C5906 D5902 C5702 R5910 C5026 R1066 D5907 D5908 R9528 R5744 D5716 R5905 D5903 C5909 C5911 R5906 D5904 C5910 C5912 C5704 C5907 C5908 D5709 C5705 R5722 R5727 R5909 R5724 R5725 R5726 Q5714 D5711 D5713 Q5710 R5716 R5717 C5703 R5719 D5705 R5715 R5713R5714 TH5

48、01 D5909 D5910 R5911 R5912 C5710 R5730 R5734 R5735 R5736 R5737 R5738 C5707 C5708 C5709 D5714 D5715 R5740 R5745 CN901 C9001 C9002 C9003C9004 C9504 D9505 R9506 R9505 C9505 R9527 R9504 R5051 C9503 R9502 R9501 K9501 C9502 C9501 D9507C9506 C5917 K5002 C9509 TH591 C9510 C9511C9512 R9516 TH592 TH594 TH593 R5748R5747 D5718 R9518 R9519 R9520 R9521 R9522 R9523 R9526 R9524 R9525 R5913R5914 R5052 R5058 C5023 C5024 C1022 R1025 R5004 R