Jvc-SPDW-103-Service-Manual电路原理图.pdf

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1、SERVICE MANUALCOPYRIGHT 2003 VICTOR COMPANY OF JAPAN, LIMITEDNo.220562003/6POWERED SUBWOOFER2205620036SP-DW103TABLE OF CONTENTS1 PRECAUTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-32 SPECIFIC S

2、ERVICE INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-43 DISASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-54 ADJUSTME

3、NT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-85 TROUBLE SHOOTING. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4、1-9Area suffixB - U.K.E - Continental Europe1-2 (No.22056)SPECIFICATIONType Powered Subwoofer Bass-reflex type, (magnetically shielded type)Speaker unit 16.0 cm cone ( 1)Frequency range 30 Hz to 200 HzInput impedance 50 k (LOW-LEVEL) 470 (HIGH-LEVEL)Input terminals INPUT 1 (LOW-LEVEL) INPUT 2 (HIGH-

5、LEVEL)Power requirements AC 230 V , 50 HzOutput power of built-in amp 100 W (45 Hz, 4 , 10 % THD)Power consumption 27 WDimensions 210 mm (width) 392 mm (height) 348 mm (depth)Mass 10 kgAccessories Monaural audio cord ( 1)(No.22056)1-3SECTION 1PRECAUTION1.1 Safety Precautions(1) This design of this p

6、roduct contains special hardware andmany circuits and components specially for safety purpos-es. For continued protection, no changes should be madeto the original design unless authorized in writing by themanufacturer. Replacement parts must be identical tothose used in the original circuits. Servi

7、ces should be per-formed by qualified personnel only.(2) Alterations of the design or circuitry of the product shouldnot be made. Any design alterations of the product shouldnot be made. Any design alterations or additions will voidthe manufacturers warranty and will further relieve themanufacture o

8、f responsibility for personal injury or propertydamage resulting therefrom.(3) Many electrical and mechanical parts in the products havespecial safety-related characteristics. These characteris-tics are often not evident from visual inspection nor can theprotection afforded by them necessarily be ob

9、tained by us-ing replacement components rated for higher voltage, watt-age, etc. Replacement parts which have these specialsafety characteristics are identified in the Parts List of Ser-vice Manual. Electrical components having such featuresare identified by shading on the schematics and by ( ) onth

10、e Parts List in the Service Manual. The use of a substitutereplacement which does not have the same safety charac-teristics as the recommended replacement parts shown inthe Parts List of Service Manual may create shock, fire, orother hazards.(4) The leads in the products are routed and dressed with

11、ties,clamps, tubings, barriers and the like to be separated fromlive parts, high temperature parts, moving parts and/orsharp edges for the prevention of electric shock and firehazard. When service is required, the original lead routingand dress should be observed, and it should be confirmedthat they

12、 have been returned to normal, after reassem-bling.(5) Leakage shock hazard testingAfter reassembling the product, 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

13、productis safe to operate without danger of electrical shock.Do notuse a line isolation transformer during this check. Plug the AC line cord directly into the AC outlet. Using a“Leakage Current Tester“, measure the leakage currentfrom each exposed metal parts of the cabinet, particular-ly any expose

14、d metal part having a return path to thechassis, to a known good earth ground. Any leakage cur-rent must not exceed 0.5mA AC (r.m.s.). Alternate check methodPlug the AC line cord directly into the AC outlet. Use anAC voltmeter having, 1,000 per volt or more sensitivityin the following manner. Connec

15、t a 1,500 10W resistorparalleled by a 0.15F AC-type capacitor between an ex-posed metal part and a known good earth ground.Measure the AC voltage across the resistor with the ACvoltmeter. Move the resistor connection to each exposed metalpart, particularly any exposed metal part having a returnpath

16、to the chassis, and measure the AC voltage acrossthe resistor. Now, reverse the plug in the AC outlet andrepeat each measurement. Voltage measured any mustnot exceed 0.75 V AC (r.m.s.). This corresponds to 0.5mA AC (r.m.s.). 1.2 Warning(1) This equipment has been designed and manufactured tomeet int

17、ernational safety standards.(2) It is the legal responsibility of the repairer to ensure thatthese safety standards are maintained.(3) Repairs must be made in accordance with the relevantsafety standards.(4) It is essential that safety critical components are replacedby approved parts.(5) If mains v

18、oltage selector is provided, check setting for localvoltage.1.3 CautionBurrs formed during molding may be left over on some partsof the chassis. Therefore, pay attention to such burrs in the case of pre-forming repair of this system.1.4 Critical parts for safetyIn regard with component parts appeari

19、ng on the silk-screenprinted side (parts side) of the PWB diagrams, the parts that areprinted over with black such as the resistor ( ), diode ( )and ICP ( ) or identified by the “ “ mark nearby are criticalfor safety. When replacing them, be sure to use the parts of thesame type and rating as specif

20、ied by the manufacturer. (This regulation dose not Except the J and C version)Good earth groundPlace this probe on each exposedmetal part.AC VOLTMETER(Having 1000 ohms/volts,or more sensitivity)1500 10W0.15 F AC TYPE1-4 (No.22056)SECTION 2SPECIFIC SERVICE INSTRUCTIONSThis service manual does not des

21、cribe SPECIFIC SERVICE INSTRUCTIONS.(No.22056)1-5SECTION 3DISASSEMBLY3.1 Disassembly method3.1.1 Removing the Amplifier assembly. (See Fig1 and 2.)(1) Remove the eleven screws A attaching the amplifier as-sembly. (See Fig 1.)(2) Remove the amplifier assembly from the main body.(3) Disconnect the wir

22、e connector from the back side of theamplifier assembly. (See Fig 2.)(4) Disconnect the speaker wire from the speaker terminal.(See Fig 2.)Fig.1Fig.23.1.2 Removing the back panel. (See Fig 3.)(1) From the back side of the main body pull out the volumeand frequency knobs.(2) Remove the seven screws B

23、 attaching the back panel.Fig.3AAAAAAmplifier assemblyAmplifier assembly Wire connectorSpeaker terminalBBBFrequency knobVolume knob1-6 (No.22056)3.1.3 Removing the power cord. (See Fig 4 and 5) Prior to performing the following procedures. remove the backpanel.(1) Remove the two screw C attaching th

24、e bracket. (See Fig 4)(2) Pull out the bracket toward you.(3) Disconnect the power cord from the connection CN901 onthe power supply assembly.3.1.4 Removing the amplifier board assembly. (See Fig 5 and 6) Prior to performing the following procedures remove the backpanel and the power cord.(1) Remove

25、 the screw D attaching the bracket b. (See Fig 5.)(2) Remove the three screws E attaching the bracket c. (SeeFig 5.)(3) Disconnect the wire from the connection CN102 andCN103 on the amplifier board assembly. (See Fig 6.)(4) Remove the amplifier board assembly from the connectorCN951 and Cn952 on the

26、 power supply board assembly.(See Fig 6.)(5) Pull out the amplifier board assembly toward you.3.1.5 Removing the power supply board assembly. (See Fig 6.) Prior to performing the following procedures remove the backpanel remove the power cord and amplifier board assembly.(1) Remove the two screws F

27、and four screws G attaching thepower supply board assembly.(2) Pull out the power supply board assembly toward you.Fig.4Fig.5Fig.6Bracket aPower cordCCAmplifier assemblyboardBracket cBracket bPower supplyassembly boardCN901CN503CN102DEEPower supplyassembly boardCN951CN952GGF(No.22056)1-73.1.6 Removi

28、ng the bottomplate. (See Fig 7.)(1) Remove the eight screws H attaching the bottom plate.Referense:When attaching the screw H. attach the plane and springwashers with them.(2) Pull out the bottom plate toward you.Fig.73.1.7 Removing the woofer. (See Fig 8.) Prior to performing the following procedur

29、es. remove the bot-tom plate.(1) Remove the six screws J attaching the woofer.(2) Pull out the woofer toward you.Fig.8Spring washerPlane washerHHHJJ1-8 (No.22056)SECTION 4ADJUSTMENTThis service manual does not describe ADJUSTMENT.(No.22056)1-9SECTION 5TROUBLE SHOOTINGThis service manual does not describe TROUBLE SHOOTING.1-10 (No.22056)SECTION 6Description of major ICs6.1 AN79L05-T (IC592) : Regulator Pin Layout Block Diagram12 3Starter21R1R2Q1RSC3Common(1)Output(3)Input(2)VoltageReferenceError Amp.TerminalProtectionCurrentLimiterPass Tr.+-