JVC-RXE12B-hccc-sm 维修电路原理图.pdf

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1、SERVICE MANUALCOPYRIGHT 2005 Victor Company of Japan, LimitedNo.MB3872005/2HOME CINEMA CONTROL CENTERMB38720052RX-E11S,RX-E12BTABLE OF CONTENTS1PRECAUTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-

2、32SPECIFIC SERVICE INSTRUCTIONS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-53DISASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6

3、4ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-165TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4、 . . 1-17Area suffixB - U.K.E - Continental EuropeEN - Northern EuropeEV - Eastern EuropeRadioFans.CN 收音机爱 好者资料库1-2 (No.MB387)SPECIFICATION* Corresponding to Linear PCM, Dolby Digital, and DTS (with sampling frequency-32 kHz, 44.1 kHz, 48 kHz).Design and specifications are subject to change without

5、notice.AmplifierOutput PowerAt stereo operationFront channels60 W per channel, min. RMS, both channels driven into 6 at 1 kHz with no more than 10% total harmon-ic distortion. (IEC268-3)At surround operationFront channels60 W per channel, min. RMS, driven into 6 at 1 kHz with no more than 10% total

6、harmonic distortion.Center channel60 W, min. RMS, driven into 6 at 1 kHz, with no more than 10% total harmonic distortion.Surround channels60 W per channel, min. RMS, driven into 6 at 1 kHz, with no more than 10% total harmonic distortion.AudioAudio Input Sensitivity/Im-pedanceDVR/DVD, VCR, TV, VIDE

7、O170 mV(p-p)/47 kAudio Input (DIGITAL IN)* Coaxial: DIGITAL IN 1(DVR/DVD)0.5 V(p-p)/75 Optical: DIGITAL IN 2(VIDEO)-21 dBm to -15 dBm (660 nm 30 nm)Audio Output LevelDVR/DVD, VCR, TV170 mVSignal-to-Noise Ratio (66 IHF/DIN)87 dB/62 dBFrequency Response (6 )20 Hz to 20 kHz (1 dB)Bass Boost+4 dB 1 dB a

8、t 100 HzEqualizationCenter frequency63 Hz, 250 Hz, 1 kHz, 4 kHz, 16 kHzControl range8 dBVideoVideo Input Sensitivity/Im-pedanceComposite video:DVR/DVD, VCR, TV, VIDEO 1 V(p-p)/75 S-video:DVR/DVD, VCRY (luminance):1 V(p-p)/75 C (chrominance, burst):0.3 V(p-p)/75 RGB:DVR/DVD, VCR0.7 V(p-p)/75 Componen

9、t:DVR/DVDY (luminance):1 V(p-p)/75 PB, PR:0.7 V(p-p)/75 Video Output Level/Im-pedanceComposite videoDVR/DVD, VCR, TV1 V(p-p)/75 S-video: TVY (luminance):1 V(p-p)/75 C (chrominance, burst):0.3 V(p-p)/75 RGB:TV0.7 V(p-p)/75 Component:MONITOR OUTY (luminance):1 V(p-p)/75 PB, PR:0.7 V(p-p)/75 Synchroniz

10、ationNegativeFM tuner (IHF)Tuning Range87.50 MHz to 108.00 MHzUsable Sensitivity Monaural17.0 dBf (1.95 V/75 )50 dB Quieting SensitivityMonaural21.3 dBf (3.2 V/75 )Stereo41.3 dBf (31.5 V/75 )Stereo Separation at Rec Out35 dB at 1 kHzAM (MW) tunerTuning Range522 kHz to 1 629 kHzGeneralPower Requireme

11、ntsAC 230 V , 50 HzPower Consumption120 W (at operation)1 W (in standby mode)Dimensions (W H D)435 mm 70 mm 325 mmMass5.6 kgRadioFans.CN 收音机爱 好者资料库(No.MB387)1-3SECTION 1PRECAUTIONS1.1Safety Precautions(1) This design of this product contains special hardware andmany circuits and components specially

12、 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. Services should be per-formed by qualified personnel only.(2) Alterations of th

13、e 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 of responsibility for personal injury or propertydamage resulting therefrom

14、.(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 obtained by us-ing replacement components rated for higher voltage, watt-age

15、, 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 ( ) onthe Parts List in the Service Manual. The use of a substitutereplacement whi

16、ch 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 ties,clamps, tubings, barriers and the like to be separated fromlive parts

17、, 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 have been returned to normal, after reassem-bling.(5) Leakage shock hazar

18、d 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 productis safe to operate without danger of electrical shock.Do notuse a l

19、ine isolation transformer during this check. Plug the AC line cord directly into the AC outlet. Using aLeakage Current Tester, measure the leakage currentfrom each exposed metal parts of the cabinet, particular-ly any exposed metal part having a return path to thechassis, to a known good earth groun

20、d. 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. Connect a 1,500 10W resistorparalleled by a 0.15F AC-type capacitor between an ex-

21、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 to the chassis, and measure the AC voltage acrossthe resistor. Now, reverse

22、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.). 1.2Warning(1) This equipment has been designed and manufactured tomeet international safety standards.(2) It is the legal responsibility of the repaire

23、r 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 voltage selector is provided, check setting for localvoltage.1.3CautionBurrs f

24、ormed 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.1.4Critical parts for safetyIn regard with component parts appearing on the silk-screenprinted side (parts side) of the PWB diagrams, the parts t

25、hat 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 specified by the manufacturer. (This regulation dose not Except the J and C version)Good

26、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.MB387)1.5 Safety Precautions (U.K only)(1) This design of this product contains special hardware and many circuits and components specially for safety purposes

27、. For con-tinued protection, no changes should be made to the original design unless authorized in writing by the manufacturer. Replace-ment parts must be identical to those used in the original circuits.(2) Any unauthorised design alterations or additions will void the manufacturers guarantee; furt

28、hermore the manufacturer cannotaccept responsibility for personal injury or property damage resulting therefrom.(3) Essential safety critical components are identified by ( ) on the Parts List and by shading on the schematics, and must neverbe replaced by parts other than those listed in the manual.

29、 Please note however that many electrical and mechanical parts inthe product have special safety related characteristics. These characteristics are often not evident from visual inspection. Partsother than specified by the manufacturer may not have the same safety characteristics as the recommended

30、replacement partsshown in the Parts List of the Service Manual and 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/or sharp edges f

31、or the prevention of electric shock and fire hazard. When service isrequired, the original lead routing and dress should be observed, and it should be confirmed that they have been returned tonormal, after re-assembling.1.5.1Warning(1) Service should be performed by qualified personnel only.(2) This

32、 equipment has been designed and manufactured to meet international safety standards.(3) It is the legal responsibility of the repairer to ensure that these safety standards are maintained.(4) Repairs must be made in accordance with the relevant safety standards.(5) It is essential that safety criti

33、cal components are replaced by approved parts.(6) If mains voltage selector is provided, check setting for local voltage.Burrs formed during molding may be left over on some parts of the chassis. Therefore, pay attention to such burrs in the case of preforming repair of this system.(No.MB387)1-5SECT

34、ION 2SPECIFIC SERVICE INSTRUCTIONSThis service manual does not describe SPECIFIC SERVICE INSTRUCTIONS.1-6 (No.MB387)SECTION 3DISASSEMBLY3.1Main body section3.1.1Removing the top cover (See Figs. 1 and 2)(1) From the both sides of the main body, remove the twoscrews A attaching the top cover. (See Fi

35、g.1)(2) From the back side of the main body, remove the fivescrews B attaching the top cover. (See Fig.2)Fig.1Fig.2Top coverATop coverB(No.MB387)1-73.1.2Removing the front panel assembly (See Figs. 3 to 5) Rremove the top cover.(1) From the top side of the main body, disconnect the wirefrom the conn

36、ector CN412 on the regulator board. (SeeFig.3)Reference:After reassembling, fix the wires with the wire holders asbefore. (See Fig.3.)(2) Disconnect the wire from the connector CN421 on the con-nection 2 board. (See Fig.3)(3) Remove the two screws C and screw C attaching the frontpanel assembly. (Se

37、e Fig.3)Reference: When attaching the screw C, attach the earth wireswith them. (See Fig.3.) When attaching the screw C, attach a wire holder withit. (See Fig.3.)(4) From the bottom side of the main body, remove the fourscrews D attaching the front panel assembly and releasethe joint a. (See Fig.4)(

38、5) From the both sides of the main body, release the joints band take out the front panel assembly in the direction of thearrow. (See Fig.5)Fig.3Fig.4Fig.53.1.3Removing the rear panel (See Fig. 6) Remove the top cover.(1) From the back side of the main body, remove strain relieffrom the rear panel i

39、n the direction of the arrow.(2) Remove the nineteen screws E attaching the rear panel.Fig.6Front panel assemblyConnection 2 boardRegulator boardCN412CN421CCCWire holdersEarth wireEarth wireWire holderFront panel assemblyaDFront panel assemblybRear panelEERear panel1-8 (No.MB387)3.1.4Removing the tu

40、ner (See Figs. 7 and 8) Remove the top cover.(1) From the top side of the main body, disconnect the cardwire from the connector CN1 on the tuner. (See Fig.7)(2) From the back side of the main body, remove the twoscrews F attaching the tuner to the rear panel. (See Fig.8)3.1.5Removing the PAL prg boa

41、rd (See Figs. 7 and 8) Remove the top cover.(1) From the back side of the main body, remove the fourscrews G attaching the PAL prg board to the rear panel.(See Fig.8)(2) From the top side of the main body, remove the tie band fix-ing the power cord. (See fig.7.)Reference:After reassembling, fix the

42、power cord with a new tieband as before. (See Fig.7.)(3) Take out the PAL prg board and disconnect the card wirefrom the connector CN751 on the forward side of the PALprg board. (See Fig.7)3.1.6Removing the DSP board (See Figs. 7 and 8) Remove the top cover.(1) From the back side of the main body, r

43、emove the twoscrews H attaching the DSP board to the rear panel. (SeeFig.8)(2) From the top side of the main body, disconnect the connec-tor CN601 on the DSP board from the connection 1 board.(See Fig.7)(3) Take out the DSP board and disconnect the card wire fromthe connector CN602 on the forward si

44、de of the DSPboard. (See Fig.7)3.1.7Removing the S.S.S. board (See Fig 7) Remove the top cover.(1) From the top side of the main body, remove the tie bandand disconnect the wire from the connector CN725 on theS.S.S. board.Reference:After attaching the S.S.S. board, fix the wire with a newtie band as

45、 before.(2) Disconnect the connector CN728 on the S.S.S. board fromthe SPK term. board.(3) Take out the S.S.S. board.Fig.7Fig.8Tie bandDSP boardDSP boardPAL prg boardS.S.S. boardCN1TunerCN751CN601CN602CN728CN725SPK term. boardTie bandPower cordConnection 1boardCN601Rear panelJHKFG(No.MB387)1-93.1.8R

46、emoving the SPK term. board (See Figs. 8 and 9) Remove the top cover, DSP board and S.S.S. board.(1) From the back side of the main body, remove the twoscrews J attaching the SPK term. board to the rear panel.(See Fig.8)(2) From the top side of the main body, disconnect the wiresfrom the connectors

47、(CN301, CN801) on the SPK term.board. (See Fig.9)(3) Take out the SPK term. board.Fig.93.1.9Removing the SCART board (See Figs. 8 and 10) Remove the top cover and DSP board.(1) From the back side of the main body, remove the twoscrews K attaching the SCART board to the rear panel.(See Fig.8)(2) From

48、 the top side of the main body, disconnect the cardwires from the connectors (CN513, CN514) on the SCARTboard. (See Fig.10)(3) Take out the SCART board.3.1.10 Removing the connection 1 board (See Fig. 10) Remove the top cover and DSP board.(1) From the top side of the main body, disconnect the conne

49、c-tor CN571 on the connection 1 board from the input Mboard.(2) Take out the connection 1 board.Fig.10SPK term. boardCN301CN801SCART boardCN513CN514Connection 1 boardCN571Input M board1-10 (No.MB387)3.1.11 Removing the regulator board (See Fig. 11) Remove the top cover, tuner and DSP board.(1) From

50、the top side of the main body, disconnect the wiresfrom the connectors (CN201, CN207, CN208, CN261,CN412, CN510, CN520, CN721) on the regulator board.(2) Remove the four screws L attaching the regulator board.(3) Take out the regulator board.Fig.113.1.12 Removing the amp. board (See Fig. 12) Remove