Jvc-SRDVM-700-EU-Service-Manual电路原理图.pdf

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1、SERVICE MANUALCOPYRIGHT 2006 Victor Company of Japan, LimitedNo.YD0912006/3Mini DV & HDD & DVD VIDEO RECORDERYD09120063SR-DVM700EUTABLE OF CONTENTS1 PRECAUTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2、 . . 1-32 SPECIFIC SERVICE INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-63 DISASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3、 . . . 1-84 ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-145 TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4、 . . . . . . . . 1-38Since the whole mechanism assembly unit is replaced, the DVD recordermechanism of this unit need not be adjusted.SR-DVM700EU D5MC29Area SuffixEU - Western EuropeDV HDD DVDDVDTVPR/CHINPUT SELECTPAUSERECREC MODE/REMAINDISPLAY ON SCREENAUDIO SUBTITLEANGLE/EE CHECKPROGRESSIVESCANSLO

5、WSLOW PLAYSTOP/CLEARNAVIGATIONTOP MENURETURNENTERMENUSTANDBY/ONTVTV/VIDEOOUTPUTSELECTTVCANCEL MEMO/MARKPROGEDITF2F1SET UPDUBBINGEENEXTPREVIOUSEJECTEJECTDISPLAYSTANDBY/ONDV/HDD/DVD REC MODE INSTANT REPLAY AUDIO DUB. INSERTS-VIDEOIN F-1VIDEO (MONO)L - AUDIO - RRECDVDRECHDDRECDVDV IN/ OUTRECPAUSEPLAYIN

6、PUTSELECTOUTPUTSELECT FFREWSTOP1-2 (No.YD091)SPECIFICATION Specifications shown are for SP mode unless otherwise specified. E.& O.E. Design and specifications subject to change without notice. Manufactured under license from Dolby Laboratories. “Dolby“ and the double-D symbol are trademarks of Dolby

7、 Laboratories. “DTS“ and “DTS Digital Out“ are trademarks of Digital Theater Systems, Inc. This unit plays back and records PAL and SECAM signals in PAL format. NTSC signals can also be played back on the DVD deck. This product incorporates copyright protection technology that is protected by U.S. p

8、atents and other intellectual property rights. Use of this copy-right protection technology must be authorized by Macrovision, and is intended for home and other limited viewing uses only unless otherwiseauthorized by Macrovision. Reverse engineering or disassembly is prohibited.GENERALPower require

9、ment AC 220 V - 240 V,50 Hz/60 HzPower consumptionPower on 42 WPower off 5 WLaser specificationFor CD Wavelength: 770 to 810 nmOutput: 0.4 mWFor DVD Wavelength: 653 to 663 nmOutput: 1.0 mWTemperatureOperating 5C to 35C Storage -20C to 60COperating position Horizontal onlyDimensions (WxHxD) 435 mm 96

10、 mm 372 mmWeight 5.8 kg Input/OutputVideo input 0.5 - 2.0 Vp-p, 75 (pin jack)Video output 1 Vp-p, 75 (BNC)Audio input -8 dB, 50 k (pin jack), Corresponding to mono (left)Audio output -8 dB, 1 k (pin jack)S-video input Y: 0.8 - 1.2 Vp-p, 75 , C: 0.2 - 0.4 Vp-p, 75 S-video output Y: 1.0 Vp-p, 75 , C:

11、0.3 Vp-p, 75 DV 4-pin for DV IN/OUTRemote Input 3.5 mm JackSerial Command D-SUB 9-PINComponent video output Y: 1.0 Vp-p, 75 , CB/CR, PB/PR: 0.7 Vp-p, 75 Corresponding to copy protectionDigital audio output Optical, CoaxialCorresponding to Dolby Digital and DTS Digital SurroundBit stream Selectable i

12、n digital audio output setting menuVIDEO/AUDIO (DVD deck)Recording time Maximum 8 hours (with 4.7 GB disc) (XP): Approx. 1 hour, (SP): Approx. 2 hours, (LP): Approx. 4 hours (EP): Approx. 6 hours, (FR): Approx. 1 hour - 8 hoursAudio recording system Dolby Digital (2 ch), Linear PCM (XP mode only)Vid

13、eo recording compression system MPEG2 (CBR/VBR)VIDEO/AUDIO (HDD Deck)Video recording compression system MPEG2 (VBR)Audio recording system Dolby Digital (2 ch), Linear PCM (XP mode only)Recording time Maximum 473 hours (with 250 GB HDD)(DV): Approx. 18 hours,(XP): Approx. 53 hours,(SP): Approx. 109 h

14、ours,(LP): Approx. 218 hours,(EP): Approx. 328 hours,(FR): Approx. 473 hoursVIDEO/AUDIO (DV Deck)Signal system PAL colour signal, 625 lines/50 fieldsRecording system Digital Component RecordingFormat DV format (SD mode)Cassette Mini DV CassetteMaximum recording time(SP) (SP): 80 min. with M-DV80ME c

15、assette(LP) (LP): 120 min. with M-DV80ME cassetteAudio recording system PCM 48 kHz, 16 bit (2 ch)/32 kHz, 12 bit (4 ch)ACCESSORIESProvided accessories Audio/Video cable,3-pin conversion plug (for UK use only),Infrared remote control unit,”R6” battery x 2(No.YD091)1-3SECTION 1PRECAUTION1.1 SAFTY PREC

16、AUTIONSPrior to shipment from the factory, JVC products are strictly in-spected to conform with the recognized product safety and elec-trical codes of the countries in which they are to besold.However,in order to maintain such compliance, it is equallyimportant to implement the following precautions

17、 when a set isbeing serviced.1.1.1 Precautions during Servicing(1) Locations requiring special caution are denoted by labelsand inscriptions on the cabinet, chassis and certain parts ofthe product.When performing service, be sure to read andcomply with these and other cautionary notices appearingin

18、the operation and service manuals.(2) Parts identified by the symbol and shaded ( ) partsare critical for safety.Replace only with specified part numbers.NOTE :Parts in this category also include those specified tocomply with X-ray emission standards for productsusing cathode ray tubes and those spe

19、cified forcompliance with various regulations regarding spu-rious radiation emission.(3) Fuse replacement caution notice.Caution for continued protection against fire hazard.Replace only with same type and rated fuse(s) as speci-fied.(4) Use specified internal wiring. Note especially: Wires covered

20、with PVC tubing Double insulated wires High voltage leads(5) Use specified insulating materials for hazardous live parts.Note especially: Insulation Tape PVC tubingSpacers Insulation sheets for transistorsBarrier(6) When replacing AC primary side components (transformers,power cords, noise blocking

21、capacitors, etc.) wrap ends ofwires securely about the terminals before soldering.Fig.1-1-1(7) Observe that wires do not contact heat producing parts(heatsinks, oxide metal film resistors, fusible resistors, etc.)(8) Check that replaced wires do not contact sharp edged orpointed parts.(9) When a pow

22、er cord has been replaced, check that 10-15kg of force in any direction will not loosen it.Fig.1-1-2(10) Also check areas surrounding repaired locations.(11) Products using cathode ray tubes (CRTs)In regard to suchproducts, the cathode ray tubes themselves, the high volt-age circuits, and related ci

23、rcuits are specified for compli-ance with recognized codes pertaining to X-ray emission.Consequently, when servicing these products, replace thecathode ray tubes and other parts with only the specifiedparts. Under no circumstances attempt to modify these cir-cuits.Unauthorized modification can incre

24、ase the high volt-age value and cause X-ray emission from the cathode raytube.(12) Crimp type wire connectorIn such cases as when replacingthe power transformer in sets where the connections be-tween the power cord and power trans former primary leadwires are performed using crimp type connectors, i

25、f replac-ing the connectors is unavoidable, in order to prevent safe-ty hazards, perform carefully and precisely according to thefollowing steps. Connector part number :E03830-001 Required tool : Connector crimping tool of the propertype which will not damage insulated parts. Replacement procedurea)

26、 Remove the old connector by cutting the wires at apoint close to the connector.Important : Do not re-use a connector (discard it).Fig.1-1-3b) Strip about 15 mm of the insulation from the endsof the wires. If the wires are stranded, twist thestrands to avoid frayed conductors.Fig.1-1-4c) Align the l

27、engths of the wires to be connected. In-sert the wires fully into the connector.Fig.1-1-5d) As shown in Fig.1-1-6, use the crimping tool tocrimp the metal sleeve at the center position. Besure to crimp fully to the complete closure of thetool.Fig.1-1-6e) Check the four points noted in Fig.1-1-7.Fig.

28、1-1-7Power cordcut close to connector15 mmConnectorMetal sleeve1.252.05.5Crimping toolNot easily pulled freeCrimped at approx. centerof metal sleeveConductors extendedWire insulation recessedmore than 4 mm1-4 (No.YD091)1.1.2 Safety Check after ServicingExamine the area surrounding the repaired locat

29、ion for damageor deterioration. Observe that screws, parts and wires have beenreturned to original positions, Afterwards, perform the followingtests and confirm the specified values in order to verify compli-ance with safety standards.(1) Insulation resistance testConfirm the specified insulation re

30、sistance or greater be-tween power cord plug prongs and externally exposedparts of the set (RF terminals, antenna terminals, video andaudio input and output terminals, microphone jacks, ear-phone jacks, etc.).See table 1 below.(2) Dielectric strength testConfirm specified dielectric strength or grea

31、ter betweenpower cord plug prongs and exposed accessible parts ofthe set (RF terminals, antenna terminals, video and audioinput and output terminals, microphone jacks, earphonejacks, etc.). See Fig.1-1-11 below.(3) Clearance distanceWhen replacing primary circuit components, confirm spec-ified clear

32、ance distance (d), (d) between soldered termi-nals, and between terminals and surrounding metallicparts. See Fig.1-1-11 below.Fig.1-1-8(4) Leakage current testConfirm specified or lower leakage current between earthground/power cord plug prongs and externally exposed ac-cessible parts (RF terminals,

33、 antenna terminals, video andaudio input and output terminals, microphone jacks, ear-phone jacks, etc.).Measuring Method : (Power ON)Insert load Z betweenearth ground/power cord plug prongs and externally ex-posed accessible parts. Use an AC voltmeter to measureacross both terminals of load Z. See F

34、ig.1-1-9 and follow-ing Fig.1-1-12.Fig.1-1-9(5) Grounding (Class 1 model only)Confirm specified or lower grounding impedance betweenearth pin in AC inlet and externally exposed accessibleparts (Video in, Video out, Audio in, Audio out or Fixingscrew etc.).Measuring Method:Connect milli ohm meter bet

35、ween earth pin in AC inlet andexposed accessible parts. See Fig.1-1-10 and groundingspecifications.Fig.1-1-10Fig.1-1-11Fig.1-1-12NOTE :These tables are unofficial and for reference only. Be sure to confirm the precise values for your particular country and locality.ChassisPower cord primary wireddab

36、cVAExternallyexposedaccessible partZExposed accessible partGrounding SpecificationsAC inletRegionUSA & CanadaEurope & AustraliaGrounding Impedance (Z)Z 0.1 ohmZ 0.5 ohmEarth pinMIlli ohm meterAC Line Voltage RegionJapanEurope & AustraliaR 1 M /500 V DCUSA & Canada 1 M R 12 M /500 V DCR 10 M /500 V D

37、CInsulation Resistance (R) Dielectric Strength Clearance Distance (d), (d)100 V100 to 240 V110 to 130 V110 to 130 V200 to 240 VAC 1 kV 1 minuteAC 1.5 kV 1 minuteAC 1 kV 1 minute(Class )(Class )AC 3 kV 1 minuteAC 1.5 kV 1 minuted, d 3 mmd, d 4 mmd, d 3.2 mmd 8 mm (Power cord)d 6 mm (Primary wire)d 4

38、mmAC Line Voltage RegionJapanEurope & AustraliaUSA & CanadaLoad Z Leakage Current (i) a, b, c100 V110 to 130 V110 to 130 V220 to 240 Vi 1 mA rmsi 0.5 mA rmsi 0.7 mA peaki 2 mA dci 0.7 mA peaki 2 mA dcExposed accessible partsExposed accessible partsAntenna earth terminalsOther terminals11.52500.15(No

39、.YD091)1-51.2 Hard Disk Drive (HDD) Handling PrecautionsThe HDD is a precision device for use in reading and writing a large amount of data on or from a disk rotating at a high speed. If it isnot handled carefully, either abnormal operation may result or it may not be possible to read data. The HDD

40、is sensitive to the followingitems and special care is required in safeguarding against them when handling an HDD. Also take care in handling a set incorporatingan HDD.(1) Vibrations and impacts(2) Static electricity(3) Rough handling1.2.1 Handling in transport, etc. Be sure to place the HDD in the

41、manufacturers specified pack-age carton before transport. When receiving a package containing an HDD, check that thepackage carton is not damaged (such as having holes in thecarton, crushed corners, etc.). Do not impact the packaging carton when loading or unloadingit. It is not permitted to use the

42、 inner package carton only fortransporting an HDD. Do not stack package cartons one upon another.1.2.2 Handling an HDD in the stand-alone status When handling an HDD on a hard workbench, place an anti-static mat (rubber sheet) or similar object on the hard surface(to prevent any impacts occurring be

43、tween the HDD andbench). Do not stack the HDDs one upon another. Do not knock an HDD with a hard object (such as a screwdriv-er). Do not place an HDD on its side panel without using a support(do not place an HDD in an unstable position).1.2.3 Handling the installation of an HDD Place antistatic mats

44、 or similar sheets on all of the surfaces on which work is conducted or when the HDD is transported. Do not permit the HDD to knock against the sets brackets. When screwing the brackets, be careful not to knock the HDD. When using a power screwdriver, use a low-shock model and arrangethe tightening

45、torque properly. When mounting an HDD in a main body, take care not to apply excessive force to the brackets.HDDDo not throw or drop packages.Be sure to package and transport the HDDs correctly.1-6 (No.YD091)SECTION 2SPECIFIC SERVICE INSTRUCTIONS2.1 Service positionThis unit has been designed so tha

46、t the Mechanism and Mainboard assemblies can be removed together from the bottomchassis. Before diagnosing or servicing the circuit boards, takeout the major parts from the bottom chassis.2.1.1 How to set the “Service position“(1) Refer to the disassembly procedure and perform the disas-sembly of th

47、e major parts before removing the Mechanismassembly.(2) Remove the screws that fix the Mechanism, Main board as-sembly to the bottom chassis. If any other screws are usedto fix the boards, remove them also.(3) Remove the combined Mechanism, HDD, DVD unit,switching regulator, digital, DV jack, juncti

48、on and Mainboard assemblies.(4) If any other major parts are used, remove them also.(5) Connect the wires and connectors of the major parts thathave been removed in steps (1) to (4). (Refer to Fig. 2-1a.)(6) Place the combined Mechanism, Main board and otherboard assemblies upside down.(7) Insert th

49、e power cord plug into the power outlet and thenproceed with the diagnostics and servicing of the board as-sembly.Notes: Before inserting the power cord plug into the power out-let, make sure that none of the electrical parts are ableto short-circuit between the workbench and the boardassembly. For the disassembly procedure of the major parts anddetails of the precautions to be taken, see “Removingthe major parts“. If ther