Hitachi-DVPF2U-cd-sm 维修电路原理图.pdf

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1、SERVICE MANUALSERVICE MANUALDigital Media Division, TokaiDVD PLAYER & VIDEO CASSETTE RECORDERDVD PLAYER & VIDEO CASSETTE RECORDERSPECIFICATIONS AND PARTS ARE SUBJECT TO CHANGE FOR IMPROVEMENTTKNo. 9206ETKNo. 9206EDV-PF2UDV-PF2UApril2002OPEN/CLOSESTOPSKIPPLAYSEARCHSKIPDVDVCRSTOP/EJECTREWPLAYPOWER/STA

2、NDBYF.FWDREC/ITRTIMER SETVCR/TVCST.INOUTPUTCHANNELVIDEO INL(mono)RAUDIO INThis video deck is VHS type video recorder. For proper operation, only the VHS type cassette must be used.RadioFans.CN 收音机爱 好者资料库CONTENTS SPECIFICATIONS. . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-1-1COMPARISON O

3、F MODELS . . . . . . . . . . . . . . . . . . . .1-2-1LASER BEAM SAFETY PRECAUTIONS. . . . . . . . . . . 1-3-1IMPORTANT SAFETY PRECAUTIONS. . . . . . . . . . . .1-4-1Product Safety Notice . . . . . . . . . . . . . . . . . . . . . . . . . 1-4-1Precautions during Servicing. . . . . . . . . . . . . . .

4、. . . . . 1-4-1Safety Check after Servicing. . . . . . . . . . . . . . . . . . . . 1-4-2STANDARD NOTES FOR SERVICING . . . . . . . . . . . . 1-5-1Circuit Board Indications . . . . . . . . . . . . . . . . . . . . . . . 1-5-1Instructions for Connectors . . . . . . . . . . . . . . . . . . . . . 1-5-1Ho

5、w to Remove/Install Flat Pack-IC . . . . . . . . . . . . . . 1-5-1Instructions for Handling Semi-conductors . . . . . . . . . 1-5-3PREPARATION FOR SERVICING . . . . . . . . . . . . . . . . 1-6-1How to Enter the Service Mode. . . . . . . . . . . . . . . . . . 1-6-1ORERATING CONTROLS AND FUNCTIONS . .

6、 . . . . . 1-7-1FIRMWARE RENEWAL MODE . . . . . . . . . . . . . . . . . . 1-8-1TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . 1-9-1CABINET DISASSEMBLY INSTRUCTIONS . . . . . . . . 2-1-11. Disassembly Flowchart . . . . . . . . . . . . . . . . . . . . . . 2-1-12. Disassembly Method.

7、 . . . . . . . . . . . . . . . . . . . . . . . 2-1-1DISASSEMBLY/ASSEMBLY PROCEDURES OFDECK MECHANISM. . . . . . . . . . . . . . . . . . . . . . . . . .2-2-1ALIGNMENT PROCEDURES OF MECHANISM . . . . . 2-3-1ELECTRICAL ADJUSTMENT INSTRUCTIONS . . . . . 2-4-1Test Equipment Required . . . . . . . . . . .

8、 . . . . . . . . . . . 2-4-1Head Switching Position Adjustment. . . . . . . . . . . . . . 2-4-1FIXTURE AND TAPE FOR ADJUSTMENT . . . . . . . . . 2-5-1How to Use The Fixtures. . . . . . . . . . . . . . . . . . . . . . . 2-5-1MECHANICAL ALIGNMENT PROCEDURES . . . . . . . 2-6-1Service Information . . .

9、 . . . . . . . . . . . . . . . . . . . . . . . . 2-6-11.Tape Interchangeability Alignment. . . . . . . . . . . . . . 2-6-21-A.Preliminary/Final Checking andAlignment of Tape Path . . . . . . . . . . . . . . . . . . . 2-6-31-B.X Value Alignment . . . . . . . . . . . . . . . . . . . . . . . . 2-6-31-C

10、.Checking/Adjustment of Envelope Waveform . . .2-6-41-D.Azimuth Alignment ofAudio/Control/Erase Head . . . . . . . . . . . . . . . . .2-6-4STANDARD MAINTENANCE. . . . . . . . . . . . . . . . . . . . 2-7-1Service Schedule Components. . . . . . . . . . . . . . . . . . 2-7-1Cleaning . . . . . . . . . .

11、 . . . . . . . . . . . . . . . . . . . . . . . . . 2-7-2EXPLODED VIEWS . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1-1Cabinet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1-1Deck Mechanism View 1. . . . . . . . . . . . . . . . . . . . . . . 3-1-2Deck Mechanis

12、m View 2. . . . . . . . . . . . . . . . . . . . . . . 3-1-2Deck Mechanism View 3. . . . . . . . . . . . . . . . . . . . . . . 3-1-3REPLACEMENT PARTS LIST . . . . . . . . . . . . . . . . . . . 3-2-1Mechanical Parts List . . . . . . . . . . . . . . . . . . . . . . . . . 3-2-1Electrical Parts List . .

13、. . . . . . . . . . . . . . . . . . . . . . . . . 3-2-3SCHEMATIC DIAGRAMS/CBAS ANDTEST POINTS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1-1Wiring Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1-3Main 1/5 Schematic Diagram . . . . . . . . . . . . . . . . .

14、 . . 4-1-4Main 2/5 Schematic Diagram . . . . . . . . . . . . . . . . . . . 4-1-5Main 3/5 Schematic Diagram . . . . . . . . . . . . . . . . . . . 4-1-6Main 4/5 Schematic Diagram . . . . . . . . . . . . . . . . . . . 4-1-7Main 5/5 Schematic Diagram . . . . . . . . . . . . . . . . . . . 4-1-8Waveforms

15、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1-9Function Schematic Diagram . . . . . . . . . . . . . . . . . . 4-1-10Jack Schematic Diagram. . . . . . . . . . . . . . . . . . . . . . 4-1-11Main CBA Top View . . . . . . . . . . . . . . . . . . . . . . . . . 4-1-12Main CBA Botto

16、m View. . . . . . . . . . . . . . . . . . . . . . . 4-1-13Function CBA Top/Bottom View . . . . . . . . . . . . . . . . 4-1-14Jack CBA Top/Bottom View. . . . . . . . . . . . . . . . . . . 4-1-15Wiring Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1-16DVD Main 1/4 Schematic Diagr

17、am . . . . . . . . . . . . . . 4-1-17DVD Main 2/4 Schematic Diagram . . . . . . . . . . . . . . 4-1-18DVD Main 3/4 Schematic Diagram . . . . . . . . . . . . . . 4-1-19DVD Main 4/4 Schematic Diagram . . . . . . . . . . . . . . 4-1-20BLOCK DIAGRAMS . . . . . . . . . . . . . . . . . . . . . . . . . . .

18、 4-2-1 VTR Section Servo/System Control Block Diagram. . . . . . . . . . . . . 4-2-1Video Block Diagram. . . . . . . . . . . . . . . . . . . . . . . . . . 4-2-2Audio Block Diagram. . . . . . . . . . . . . . . . . . . . . . . . . . 4-2-3Hi-Fi Audio Block Diagram . . . . . . . . . . . . . . . . . . .

19、. . 4-2-4Power Supply Block Diagram . . . . . . . . . . . . . . . . . . . 4-2-5 DVD Section DVD System Control Block Diagram. . . . . . . . . . . . . . 4-2-6RF Signal Control/Servo Block Diagram. . . . . . . . . . . 4-2-7DVD Signal Process Block Diagram . . . . . . . . . . . . . . 4-2-8DVD Video Blo

20、ck Diagram . . . . . . . . . . . . . . . . . . . . . 4-2-9DVD Audio Block Diagram . . . . . . . . . . . . . . . . . . . . 4-2-10SYSTEM CONTROL TIMING CHARTS . . . . . . . . . . . . 4-3-1IC PIN FUNCTION DESCRIPTIONS . . . . . . . . . . . . . . 4-4-1LEAD IDENTIFICATIONS. . . . . . . . . . . . . . . .

21、. . . . . . . 4-5-1CHAPTER 1GENERAL INFORMATIONCHAPTER 2DISASSEMBLY AND ADJUSTMENT CHAPTER 3EXPLODED VIEWS AND PARTS LISTCHAPTER 4SCHEMATIC AND BLOCK DIAGRAMS/CBASRadioFans.CN 收音机爱 好者资料库1-1-1Product type:DVD player with Video Cassette RecorderDiscs & Tapes:DVD videoAudio CDVHS Video Cassette tapeCon

22、verter output:VHF Channel 3 or 4.Power source:120 V AC +/- 10%, 60 Hz +/- 0.5%Power consumption:25 W (standby: 7.2 W)Operating temperature:5C to 40CDimensions:W 17-1/8” (435 mm)H 4” (99 mm)D 10-1/2” (266 mm)Weight:8.8 lbs (4 kg)SPECIFICATIONSManufactured under license from Dolby Laboratories. Dolby

23、and the double-D symbol are trademarks of Dolby Laboratories. DTS and DTS Digital Out are trademarks of Digital Theater Systems Inc.CHAPTER 1GENERAL INFORMATION1-2-1COMPARISON OF MODELS VTR Section: Same as on leftDVD Section: Same as on leftITEMDV-PF2UVT-FX665A/FX665ACVideo FormatVHSY/C SeparationC

24、omb FilterYNR (Luminance Noise Reduction) CircuitVVNew Synchronise CircuitPicture ControlVideo/Audio Input (Rear)1/1 (IN1)Video/Audio Input (Front)1/1 (IN2)Video/Audio Output (Rear)1/1 (OUT1)Remote ControllerDV-RMPF2VT-RMF1Stereo CM Skip FeatureVVAuto Clock FeatureVVNumber of Timer Programming7 Prog

25、ram/yearSelf Diagnosis FuntionVV (4 Modes)Back-up Time30 sSQPBVVSurge AbsorberVVAuto Power Off FeatureVVLocal Broadcast SettingVVMulti Search FeatureVV (Index, Time Search)Search SpeedSP: X5LP: X5/X9EP: X5/X15SP: X5EP: X5/X15FF/REW Time (T-120 Tape)FF: approx. 4 min, REW: approx. 4 minHead Compositi

26、onDA4+Hi-FiSP: 249/58 mEP: 221/21 mHi-Fi Audio: 228/28 mVideo Head MaterialSP: FerriteEP: FerriteHi-Fi Audio: FerriteVISSVV (Index Search)VVITEMDV-PF2UDV-P315U/P313UDrive Speed1xLaser21DVD/VCD/SVCD/CD-DAO / - / - / OO / O / O / OCD-R/CD-RW/DVD-R (Video Format)O / O / O- / - / - DVD-RAM (VR Format)-

27、MP3O-OSD languages3 (English, French, Spanish)Jog Shuttle on Front-Headphone Jack / Volume-/-VIDEOINPUT/OUTPUTOTHERMECHANISMGENERAL1-2-2PAL Disc NTSC Out-Video Out Mode NTSC/PAL/PAL60O / - / -S-Video / Component / CompositeO / O / OVideo D/A Converter10bitBlack Level SelectOPicture Control-Progressi

28、ve OutO-Audio D/A Converter192kHz / 24bit96kHz / 24bitDigital Audio Out Optical / Coaxial- / OO / ODolby Digital 5.1 ch Decode-DTS Digital OutOVirtual SurroundODynamic Range Compression (Dolby Digital)ODVD Audio-Power on sound-Search Speed (DVD: 2, 8, 30, 60/VCD: 2, 8, 30/CD: 16)2 to 60 (FORWARD/REW

29、IND)2 to 128 (FORWARD/REWIND)Slow Speed1/16, 1/8, 1/2 (FORWARD only)1/8, 1/4, 1/2 (FORWARD only)IP Search (Smooth 2x Play)O2x Play with Audio-Step Forward / ReverseO / -Still Picture Select (Frame/Field)Auto Only ODisc Navigation-O (DV-P315U)- (DV-P313U)DVD Zoom x2 / x4 / x16O / O / -Program and Ran

30、dom Play of DVD / VCD-O / OA-B RepeatORepeatOLast PlayOClosed Caption for NTSC DVDOFront Panel Display DimmerOScreen SaverOAuto Power OffOJog Shuttle on Remote-TV ControlO-Remote ControllerOBatteryOAV CableOS Cable-AC Socket-Warranty CardOVIDEOAUDIOTRICK PLAYFEATURESREMOTECONTROLACCESSORY1-3-1Drive

31、Mecha AssemblyLaser Beam RadiationLaser PickupTurntableLASER RADIATIONWHEN OPEN. DO NOTSTARE INTO BEAM.CAUTIONLASER BEAM SAFETY PRECAUTIONSThis DVD player uses a pickup that emits a laser beam.The laser beam is emitted from the location shown in the figure. When checking the laser diode, be sure to

32、keepyour eyes at least 30cm away from the pickup lens when the diode is turned on. Do not look directly at the laserbeam.Caution: Use of controls and adjustments, or doing procedures other than those specified herein, may result inhazardous radiation exposure.Do not look directly at the laser beam c

33、omingfrom the pickup or allow it to strike againstyour skin.Location: Inside Top of DVD mechanism.1-4-1IMPORTANT SAFETY PRECAUTIONSProduct Safety NoticeSome electrical and mechanical parts have specialsafety-related characteristics which are often not evi-dent from visual inspection, nor can the pro

34、tectionthey give necessarily be obtained by replacing themwith components rated for higher voltage, wattage,etc. Parts that have special safety characteristics areidentified by a # on schematics and in parts lists. Useof a substitute replacement that does not have thesame safety characteristics as t

35、he recommendedreplacement part might create shock, fire, and/or otherhazards. The Products Safety is under review contin-uously and new instructions are issued wheneverappropriate. Prior to shipment from the factory, ourproducts are carefully inspected to confirm with therecognized product safety an

36、d electrical codes of thecountries in which they are to be sold. However, inorder to maintain such compliance, it is equally impor-tant to implement the following precautions when a setis being serviced.Precautions during ServicingA. Parts identified by the # symbol are critical forsafety. Replace o

37、nly with part number specified.B. In addition to safety, other parts and assembliesare specified for conformance with regulationsapplying to spurious radiation. These must also bereplaced only with specified replacements.Examples: RF converters, RF cables, noise block-ing capacitors, and noise block

38、ing filters, etc.C. Use specified internal wiring. Note especially:1)Wires covered with PVC tubing2)Double insulated wires3)High voltage leadsD. Use specified insulating materials for hazardouslive parts. Note especially:1)Insulation tape2)PVC tubing 3)Spacers4)Insulators for transistorsE. When repl

39、acing AC primary side components(transformers, power cord, etc.), wrap ends ofwires securely about the terminals before solder-ing.F. Observe that the wires do not contact heat produc-ing parts (heatsinks, oxide metal film resistors, fus-ible resistors, etc.).G. Check that replaced wires do not cont

40、act sharpedges or pointed parts.H. When a power cord has been replaced, check that5 - 6 kg of force in any direction will not loosen it.I.Also check areas surrounding repaired locations.J. Be careful that foreign objects (screws, solderdroplets, etc.) do not remain inside the set.K. Crimp type wire

41、connectorThe power transformer uses crimp type connectorswhich connect the power cord and the primary sideof the transformer. When replacing the transformer,follow these steps carefully and precisely to pre-vent shock hazards.Replacement procedure1)Remove the old connector by cutting the wires at ap

42、oint close to the connector.Important: Do not re-use a connector. (Discard it.)2)Strip about 15 mm of the insulation from the endsof the wires. If the wires are stranded, twist thestrands to avoid frayed conductors.3)Align the lengths of the wires to be connected.Insert the wires fully into the conn

43、ector.4)Use a crimping tool to crimp the metal sleeve at itscenter. Be sure to crimp fully to the complete clo-sure of the tool.L. When connecting or disconnecting the internal con-nectors, first, disconnect the AC plug from the ACoutlet.1-4-2Chassis or Secondary ConductorddPrimary Circuit Terminals

44、AC Voltmeter(High Impedance)Exposed Accessible PartBEarth Ground Power Cord Plug ProngsZ1.5k0.15 FSafety Check after ServicingExamine the area surrounding the repaired location fordamage or deterioration. Observe that screws, parts,and wires have been returned to their original posi-tions. Afterward

45、s, do the following tests and confirmthe specified values to verify compliance with safetystandards.1. Clearance DistanceWhen replacing primary circuit components, confirmspecified clearance distance (d) and (d) between sol-dered terminals, and between terminals and surround-ing metallic parts. (See

46、 Fig. 1)Table 1 : Ratings for selected areaNote: This table is unofficial and for reference only. Be sure to confirm the precise values.2. Leakage Current TestConfirm the specified (or lower) leakage currentbetween B (earth ground, power cord plug prongs)and externally exposed accessible parts (RF t

47、ermi-nals, antenna terminals, video and audio input andoutput terminals, microphone jacks, earphone jacks,etc.) is lower than or equal to the specified value in thetable below. Measuring Method (Power ON) :Insert load Z between B (earth ground, power cordplug prongs) and exposed accessible parts. Us

48、e anAC voltmeter to measure across the terminals of loadZ. See Fig. 2 and the following table.AC Line VoltageClearance Distance (d) (d)120 V 3.2mm (0.126 inches)Table 2: Leakage current ratings for selected areasNote: This table is unofficial and for reference only. Be sure to confirm the precise va

49、lues.AC Line VoltageLoad ZLeakage Current (i)Earth Ground (B) to:120 V0.15F CAP. & 1.5k RES. Connected in paralleli0.5mA PeakExposed accessible partsFig. 1Fig. 21-5-1STANDARD NOTES FOR SERVICINGCircuit Board Indicationsa. The output pin of the 3 pin Regulator ICs is indi-cated as shown.b. For other

50、ICs, pin 1 and every fifth pin are indicatedas shown.c. The 1st pin of every male connector is indicated asshown.Instructions for Connectors1. When you connect or disconnect the FFC (FlexibleFoil Connector) cable, be sure to first disconnectthe AC cord.2. FFC (Flexible Foil Connector) cable should b