Hitachi-DVPF2E-cd-sm 维修电路原理图.pdf

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1、SERVICE MANUALSERVICE MANUALDigital Media DivisionDVD PLAYER & VIDEO CASSETTE RECORDERDVD PLAYER & VIDEO CASSETTE RECORDERSPECIFICATIONS AND PARTS ARE SUBJECT TO CHANGE FOR IMPROVEMENTNo. 9208ENo. 9208EDVPF2EDVPF2EUKDVPF2EDVPF2EUKJuly2002PALOPEN/CLOSEDVDVCROPEN/CLOSEDVDVCRTIMER SETTIMER SETSTSTANDBY

2、ANDBYCSTCST.IN.INOUTPUTOUTPUTCHANNELCHANNELVIDEO INVIDEO INL L(mono)(mono)RARAUDIO INUDIO INOPEN/CLOSEDVDVCROPEN/CLOSEDVDVCRTIMER SETTIMER SETSTSTANDBYANDBYCSTCST.IN.INOUTPUTOUTPUTCHANNELCHANNELVIDEO INVIDEO INL L(mono)(mono)RARAUDIO INUDIO INRadioFans.CN 收音机爱 好者资料库CONTENTS SPECIFICATIONS. . . . . .

3、 . . . . . . . . . . . . . . . . . . . . . .E1-1-1LASER BEAM SAFETY PRECAUTIONS. . . . . . . . . .E1-2-1IMPORTANT SAFETY PRECAUTIONS. . . . . . . . . . .E1-3-1Product Safety Notice . . . . . . . . . . . . . . . . . . . . . . . .E1-3-1Precautions during Servicing. . . . . . . . . . . . . . . . . . .E

4、1-3-1Safety Check after Servicing. . . . . . . . . . . . . . . . . . .E1-3-2STANDARD NOTES FOR SERVICING . . . . . . . . . . .E1-4-1Circuit Board Indications . . . . . . . . . . . . . . . . . . . . . .E1-4-1Instructions for Connectors . . . . . . . . . . . . . . . . . . . .E1-4-1How to Remove/Instal

5、l Flat Pack-IC . . . . . . . . . . . . .E1-4-1Instructions for Handling Semi-conductors . . . . . . . .E1-4-3PREPARATION FOR SERVICING . . . . . . . . . . . . . . .E1-5-1How to Enter the Service Mode. . . . . . . . . . . . . . . . .E1-5-1OPERATING CONTROLS AND FUNCTIONS . . . . . .E1-6-1FIRMWARE REN

6、EWAL MODE . . . . . . . . . . . . . . . . .E1-7-1TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . .E1-8-1CABINET DISASSEMBLY INSTRUCTIONS . . . . . . .E2-1-11. Disassembly Flowchart . . . . . . . . . . . . . . . . . . . . .E2-1-12. Disassembly Method. . . . . . . . . . . . . . . . . . .

7、 . . . .E2-1-1DISASSEMBLY/ASSEMBLY PROCEDURES OFDECK MECHANISM. . . . . . . . . . . . . . . . . . . . . . . . .E2-2-1ALIGNMENT PROCEDURES OF MECHANISM . . . .E2-3-1ELECTRICAL ADJUSTMENT INSTRUCTIONS . . . .E2-4-1Test Equipment Required . . . . . . . . . . . . . . . . . . . . .E2-4-1Head Switching Po

8、sition Adjustment. . . . . . . . . . . . .E2-4-1FIXTURE AND TAPE FOR ADJUSTMENT . . . . . . . .E2-5-1How To Use The Fixtures And Tape. . . . . . . . . . . . .E2-5-1MECHANICAL ALIGNMENT PROCEDURES . . . . . .E2-6-1Service Information . . . . . . . . . . . . . . . . . . . . . . . . . .E2-6-11.Tape Int

9、erchangeability Alignment. . . . . . . . . . . . .E2-6-21-A.Preliminary/Final Checking andAlignment of Tape Path . . . . . . . . . . . . . . . . . .E2-6-31-B.X Value Alignment . . . . . . . . . . . . . . . . . . . . . . .E2-6-31-C.Checking/Adjustment of Envelope Waveform . .E2-6-41-D.Azimuth Alignme

10、nt ofAudio/Control/Erase Head . . . . . . . . . . . . . . . .E2-6-4STANDARD MAINTENANCE. . . . . . . . . . . . . . . . . . .E2-7-1Service Schedule of Components. . . . . . . . . . . . . . .E2-7-1Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .E2-7-2EXPLODED VIEWS . . . .

11、. . . . . . . . . . . . . . . . . . . . . . . 3-1-1Cabinet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1-1Deck Mechanism View 1. . . . . . . . . . . . . . . . . . . . . . . 3-1-2Deck Mechanism View 2. . . . . . . . . . . . . . . . . . . . . . . 3-1-2Deck Mechanism View

12、3. . . . . . . . . . . . . . . . . . . . . . . 3-1-3REPLACEMENT PARTS LIST . . . . . . . . . . . . . . . . . . . 3-2-1Mechanical Parts List . . . . . . . . . . . . . . . . . . . . . . . . . 3-2-1Electrical Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2-3SCHEMATIC DIAGRAMS/CBAS

13、ANDTEST POINTS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1-1Wiring Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1-3Main 1/8 Schematic Diagram . . . . . . . . . . . . . . . . . . . 4-1-4Main 2/8 Schematic Diagram . . . . . . . . . . . . . . . . . . . 4-1-

14、5Main 3/8 Schematic Diagram . . . . . . . . . . . . . . . . . . . 4-1-6Main 4/8 Schematic Diagram . . . . . . . . . . . . . . . . . . . 4-1-7Main 5/8 Schematic Diagram . . . . . . . . . . . . . . . . . . . 4-1-8Main 6/8 Schematic Diagram . . . . . . . . . . . . . . . . . . . 4-1-9Waveforms . . . . .

15、 . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1-10Main 7/8 Schematic Diagram . . . . . . . . . . . . . . . . . . 4-1-11Main 8/8 Schematic Diagram . . . . . . . . . . . . . . . . . . 4-1-12Power Supply Schematic Diagram . . . . . . . . . . . . . . 4-1-13Function Schematic Diagram . . . . .

16、 . . . . . . . . . . . . . 4-1-14Front Jack Schematic Diagram. . . . . . . . . . . . . . . . . 4-1-15AFV Schematic Diagram. . . . . . . . . . . . . . . . . . . . . . 4-1-16Main CBA Top View . . . . . . . . . . . . . . . . . . . . . . . . . 4-1-17Main CBA Bottom View. . . . . . . . . . . . . . . . .

17、. . . . . . 4-1-18Power Supply CBA Top/Bottom View . . . . . . . . . . . . 4-1-19Function CBA Top/Bottom View . . . . . . . . . . . . . . . . 4-1-20Front Jack CBA Top/Bottom View. . . . . . . . . . . . . . . 4-1-21AFV CBA Top/Bottom View. . . . . . . . . . . . . . . . . . . . 4-1-22Junction-A CBA To

18、p/Bottom View. . . . . . . . . . . . . . . 4-1-22Junction-B CBA Top/Bottom View. . . . . . . . . . . . . . . 4-1-22Wiring Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1-23DVD Main 1/4 Schematic Diagram . . . . . . . . . . . . . . 4-1-24DVD Main 2/4 Schematic Diagram . . . . .

19、. . . . . . . . . 4-1-25DVD Main 3/4 Schematic Diagram . . . . . . . . . . . . . . 4-1-26DVD Main 4/4 Schematic Diagram . . . . . . . . . . . . . . 4-1-27BLOCK DIAGRAMS . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2-1Servo/System Control Block Diagram. . . . . . . . . . . . . 4-2-1Video B

20、lock Diagram. . . . . . . . . . . . . . . . . . . . . . . . . . 4-2-2Audio Block Diagram. . . . . . . . . . . . . . . . . . . . . . . . . . 4-2-3Hi-Fi Audio Block Diagram . . . . . . . . . . . . . . . . . . . . . 4-2-4Power Supply Block Diagram . . . . . . . . . . . . . . . . . . . 4-2-5DVD System C

21、ontrol Block Diagram. . . . . . . . . . . . . . 4-2-6RF Signal Process/Servo Block Diagram . . . . . . . . . . 4-2-7DVD Signal Process Block Diagram . . . . . . . . . . . . . . 4-2-8DVD Video Block Diagram . . . . . . . . . . . . . . . . . . . . . 4-2-9DVD Audio Block Diagram . . . . . . . . . . . .

22、 . . . . . . . . 4-2-10SYSTEM CONTROL TIMING CHARTS . . . . . . . . . . . . 4-3-1IC PIN FUNCTION DESCRIPTIONS . . . . . . . . . . . . . . 4-4-1LEAD IDENTIFICATIONS. . . . . . . . . . . . . . . . . . . . . . . 4-5-1CHAPTER 1GENERAL INFORMATIONCHAPTER 2DISASSEMBLY AND ADJUSTMENT CHAPTER 3EXPLODED VIEW

23、S AND PARTS LISTCHAPTER 4SCHEMATIC AND BLOCK DIAGRAMS/CBASRadioFans.CN 收音机爱 好者资料库E1-1-1SPECIFICATIONSManufactured under license from Dolby Laboratories. Dolby and the double-D symbol are trademarks of Dolby Laboratories. DTS and DTS Digital Out are trademarks of Digital Theater Systems Inc.CHAPTER 1

24、GENERAL INFORMATIONProduct type:DVD/VCR player with Video Cassette RecorderDiscs:DVD videoAudio CDVideo Cassette tapeConverter output:UHF Channel 22 to 69.Power source:220-240V +/- 10%, 50Hz +/- 0.5%Power consumption:30 W (standby: 5.7 W)Operating temperature:5C to 40CDimensions:W 17-1/8 (435 mm)H 4

25、 (99 mm)D 10-1/2 (266 mm)Weight:8.8 lbs (4 kg)Designs and specifications are subject to change without notice.E1-2-1Drive Mecha AssemblyLaser Beam RadiationLaser PickupTurntableCAUTION - VISIBLE LASER RADIATION WHEN OPEN AND INTERLOCK DEFEATED.AVOID EXPOSURE TO BEAM.LASER BEAM SAFETY PRECAUTIONSThis

26、 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 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 contro

27、ls and adjustments, or doing procedures other than those specified herein, may result inhazardous radiation exposure.Do not look directly at the laser beam comingfrom the pickup or allow it to strike againstyour skin.Location: Inside Top of DVD mechanism.E1-3-1IMPORTANT SAFETY PRECAUTIONSProduct Saf

28、ety NoticeSome electrical and mechanical parts have specialsafety-related characteristics which are often not evi-dent from visual inspection, nor can the protectionthey give necessarily be obtained by replacing themwith components rated for higher voltage, wattage,etc. Parts that have special safet

29、y characteristics areidentified by a ! on schematics and in parts lists. Useof a substitute replacement that does not have thesame safety characteristics as the recommendedreplacement part might create shock, fire, and/or otherhazards. The Products Safety is under review contin-uously and new instru

30、ctions are issued wheneverappropriate. Prior to shipment from the factory, ourproducts are carefully inspected to confirm with therecognized product safety and electrical codes of thecountries in which they are to be sold. However, inorder to maintain such compliance, it is equally impor-tant to imp

31、lement the following precautions when a setis being serviced.Precautions during ServicingA. Parts identified by the ! symbol are critical forsafety. Replace only with part number specified.B. In addition to safety, other parts and assembliesare specified for conformance with regulationsapplying to s

32、purious radiation. These must also bereplaced only with specified replacements.Examples: RF converters, RF cables, noise block-ing capacitors, and noise blocking filters, etc.C. Use specified internal wiring. Note especially:1)Wires covered with PVC tubing2)Double insulated wires3)High voltage leads

33、D. Use specified insulating materials for hazardouslive parts. Note especially:1)Insulation tape2)PVC tubing 3)Spacers4)Insulators for transistorsE. When replacing AC primary side components(transformers, power cord, etc.), wrap ends ofwires securely about the terminals before solder-ing.F. Observe

34、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 contact 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

35、 check areas surrounding repaired locations.J. Be careful that foreign objects (screws, solderdroplets, etc.) do not remain inside the set.K. Crimp type wire connectorThe power transformer uses crimp type connectorswhich connect the power cord and the primary sideof the transformer. When replacing t

36、he transformer,follow these steps carefully and precisely to pre-vent shock hazards.Replacement procedure1)Remove the old connector by cutting the wires at apoint 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

37、. 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 connector.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 connec

38、ting or disconnecting the internal con-nectors, first, disconnect the AC plug from the ACoutlet.E1-3-2AC Voltmeter(High Impedance)Exposed Accessible PartBOne side ofPower Cord Plug ProngsZChassis or Secondary ConductorddPrimary Circuit TerminalsSafety Check after ServicingExamine the area surroundin

39、g the repaired location fordamage or deterioration. Observe that screws, parts,and wires have been returned to their original posi-tions. Afterwards, do the following tests and confirmthe specified values to verify compliance with safetystandards.1. Clearance DistanceWhen replacing primary circuit c

40、omponents, confirmspecified clearance distance (d) and (d) between sol-dered terminals, and between terminals and surround-ing metallic parts. (See 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 Curren

41、t TestConfirm the specified (or lower) leakage currentbetween B (earth ground, power cord plug prongs)and externally exposed accessible parts (RF termi-nals, antenna terminals, video and audio input andoutput terminals, microphone jacks, earphone jacks,etc.) is lower than or equal to the specified v

42、alue in thetable below. Measuring Method (Power ON) :Insert load Z between B (earth ground, power cordplug prongs) and exposed accessible parts. Use anAC voltmeter to measure across the terminals of loadZ. See Fig. 2 and the following table.AC Line VoltageClearance Distance (d) (d)230 V 3mm(d) 6 mm(

43、d)Table 2: Leakage current ratings for selected areasNote: This table is unofficial and for reference only. Be sure to confirm the precise values.AC Line VoltageLoad ZLeakage Current (i)One side of power cord plugprongs (B) to:230 V2k RES. Connected in paralleli0.7mA AC Peaki2mA DCRF orAntenna termi

44、nals50k RES. Connected in paralleli0.7mA AC Peaki2mA DCA/V Input, OutputFig. 1Fig. 2E1-4-1STANDARD NOTES FOR SERVICINGCircuit Board Indicationsa. The output pin of the 3 pin Regulator ICs is indi-cated as shown.b. For other ICs, pin 1 and every fifth pin are indicatedas shown.c. The 1st pin of every

45、 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 beinserted parallel into the connector, not at an angle.How to Remove / Insta

46、ll Flat Pack-IC1. RemovalWith Hot-Air Flat Pack-IC Desoldering Machine:.(1) Prepare the hot-air flat pack-IC desolderingmachine, then apply hot air to the Flat Pack-IC(about 5 to 6 seconds). (Fig. S-1-1)(2) Remove the flat pack-IC with tweezers while apply-ing the hot air.(3) Bottom of the flat pack

47、-IC is fixed with glue to theCBA; when removing entire flat pack-IC, first applysoldering iron to center of the flat pack-IC and heatup. Then remove (glue will be melted). (Fig. S-1-6)(4) Release the flat pack-IC from the CBA using twee-zers. (Fig. S-1-6)Caution:1. Do not supply hot air to the chip

48、parts around theflat pack-IC for over 6 seconds because damage tothe chip parts may occur. Put masking tape aroundthe flat pack-IC to protect other parts from damage.(Fig. S-1-2)2. The flat pack-IC on the CBA is affixed with glue, sobe careful not to break or damage the foil of eachpin or the solder

49、 lands under the IC when removingit.Top ViewOutInBottom ViewInput510Pin 1Pin 1FFC CableConnectorCBA* Be careful to avoid a short circuit.Fig. S-1-1Hot-airFlat Pack-ICDesolderingMachineCBAFlat Pack-ICTweezersMasking TapeFig. S-1-2E1-4-2With Soldering Iron:(1)Using desoldering braid, remove the solder

50、 from allpins of the flat pack-IC. When you use solder fluxwhich is applied to all pins of the flat pack-IC, youcan remove it easily. (Fig. S-1-3)(2)Lift each lead of the flat pack-IC upward one byone, using a sharp pin or wire to which solder willnot adhere (iron wire). When heating the pins, usea