Hitachi-DVPF35U-cd-sm 维修电路原理图.pdf

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1、SERVICE MANUALSERVICE MANUALDigital Media Division, YokohamaDVD PLAYER & VIDEO CASSETTE RECORDERDVD PLAYER & VIDEO CASSETTE RECORDERSPECIFICATIONS AND PARTS ARE SUBJECT TO CHANGE FOR IMPROVEMENTTKNo. 0508E TKNo. 0508E April2005DO NOT RESELL OR DIVERT IMPROPERLY.DO NOT RESELL OR DIVERT IMPROPERLY.DV-

2、PF35UDV-PF35U This service manual is for DV-PF35U USA model and DV-PF35U Canada model. For DV-PF35U Canada model, the letter (H9851CD) is printed on rating label in the rear. When servicing, refer to the rating label illustration at right.Rating labelH9851CDRadioFans.CN 收音机爱 好者资料库CONTENTS1 CAUTIONS

3、FOR SAFETY IN PERFORMING REPAIR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-11-1 LASER BEAM SAFETY PRECAUTIONS . . . . . . . . 1-11-2 IMPORTANT SAFETY PRECAUTIONS . . . . . . . . . 1-21-2-1 Product Safety Notice . . . . . . . . . . . . . . . . . . . . . 1-21-2-2 Precautions duri

4、ng Servicing . . . . . . . . . . . . . . . 1-21-2-3 Safety Check after Servicing. . . . . . . . . . . . . . . . 1-31-3 STANDARD NOTES FOR SERVICING. . . . . . . . . . 1-41-3-1 Circuit Board Indications . . . . . . . . . . . . . . . . . . . 1-41-3-2 Instructions for Connectors . . . . . . . . . . . .

5、 . . . . . 1-41-3-3 Pb (Lead) Free Solder. . . . . . . . . . . . . . . . . . . . . 1-41-3-4 Instructions for Handling Semi-conductors . . . . . 1-42 GENERAL INFORMATION . . . . . . . . . . . . . . . . .2-12-1 SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . 2-12-2 COMPARISON OF MOD

6、ELS. . . . . . . . . . . . . . . . . . 2-22-2-1 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-22-2-2 VCR Section . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-22-2-3 DVD Section . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-32-3 COMPARISON OF MAIN

7、CONTROL ICS . . . . . . . . 2-42-4 LIST OF ABBREVIATIONS AND TERMS FOR DVD PLAYER . . . . . . . . . . . . . . . . . . . . . . . . . 2-52-5 FUNCTION INDICATOR SYMBOLS . . . . . . . . . . . . 2-62-6 OPERATING CONTROLS AND FUNCTIONS. . . . . 2-73 MAINTENANCE AND INSPECTION. . . . . . . . . .3-13-1 TROU

8、BLESHOOTING. . . . . . . . . . . . . . . . . . . . . . . 3-13-1-1 Power Supply Section . . . . . . . . . . . . . . . . . . . . . 3-13-1-2 DVD Section . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-43-1-3 VCR Section . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-83-2 HOW TO INI

9、TIALIZE THE DVD PLAYER & VCR . 3-153-3 FIRMWARE RENEWAL MODE. . . . . . . . . . . . . . . 3-163-3-1 How to Update the Firmware Version . . . . . . . . 3-163-3-2 How to Verify the Firmware Version . . . . . . . . . 3-173-4 STANDARD MAINTENANCE. . . . . . . . . . . . . . . . . 3-183-4-1 Service Schedu

10、le of Components. . . . . . . . . . . 3-183-4-2 Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-194 ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . .4-14-1 PREPARATION FOR SERVICING. . . . . . . . . . . . . . 4-14-1-1 How to Enter the Service Mode. . . . . . . . .

11、 . . . . . 4-14-2 FIXTURE AND TAPE FOR ADJUSTMENT. . . . . . . 4-24-2-1 How to Use The Fixtures And Tape. . . . . . . . . . . 4-24-3 ELECTRICAL ADJUSTMENT INSTRUCTIONS . . . 4-34-3-1 Test Equipment Required . . . . . . . . . . . . . . . . . . 4-34-3-2 Head Switching Position Adjustment. . . . . . .

12、. . . 4-34-4 MECHANICAL ALIGNMENT PROCEDURES. . . . . 4-44-4-1 Service Information . . . . . . . . . . . . . . . . . . . . . . . 4-44-4-2 Tape Interchangeability Alignment . . . . . . . . . . . 4-51-A. Preliminary/Final Checking andAlignment of Tape Path . . . . . . . . . . . . . . . . . . . . 4-61-

13、B. X Value Alignment. . . . . . . . . . . . . . . . . . . . . . . . 4-61-C. Checking/Adjustment of Envelope Waveform . . . 4-71-D. Azimuth Alignment ofAudio/Control/Erase Head. . . . . . . . . . . . . . . . . . 4-81-E. Checking and Alignment of Tape Path during reversing . . . . . . . . . . . . . .

14、. . . 4-85 DISASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . 5-15-1 CABINET DISASSEMBLY INSTRUCTIONS . . . . . . .5-15-1-1 Disassembly Flowchart. . . . . . . . . . . . . . . . . . . . .5-15-1-2 Disassembly Method. . . . . . . . . . . . . . . . . . . . . . .5-15-1-3 How to Eject Manualy .

15、 . . . . . . . . . . . . . . . . . . . . .5-55-2 DISASSEMBLY/ASSEMBLY PROCEDURES OF DECK MECHANISM . . . . . . . . . . . . . . . . . . . . . .5-65-3 ALIGNMENT PROCEDURES OF MECHANISM . .5-156 EXPLODEDS VIEWS AND PARTS LIST . . . . . 6-16-1 EXPLODED VIEWS . . . . . . . . . . . . . . . . . . . . . . .

16、 . .6-16-1-1 Cabinet Section. . . . . . . . . . . . . . . . . . . . . . . . . . .6-16-1-2 Deck Mechanism View 1 Section . . . . . . . . . . . . .6-26-1-3 Deck Mechanism View 2 Section . . . . . . . . . . . . .6-26-1-4 Deck Mechanism View 3 Section . . . . . . . . . . . . .6-36-2 REPLACEMENT PARTS LI

17、ST. . . . . . . . . . . . . . . . . .6-46-2-1 Mechanical Parts List . . . . . . . . . . . . . . . . . . . . . .6-46-2-2 Electrical Parts List . . . . . . . . . . . . . . . . . . . . . . . .6-67 APPENDIX. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-17-1 SYSTEM CONTROL TIMING CHARTS . .

18、. . . . . . . .7-17-2 IC PIN FUNCTION DESCRIPTIONS. . . . . . . . . . . . .7-77-3 LEAD IDENTIFICATIONS . . . . . . . . . . . . . . . . . . . .7-10S SCHEMATIC, WIRING DIAGRAMSS-1 Schematic Diagrams/CBAs and Test Points . . . . . . S-1S-2 Wiring Diagram . . . . . . . . . . . . . . S-3S-3 Wiring Diagra

19、m . . . . . . . . . . . . . . S-4S-4 Main 1/8 Schematic Diagram. . . . . . . . . . . . . . . . . . S-5S-5 Main 2/8, Sensor & Power SW Schematic Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . S-6S-6 Main 3/8 Schematic Diagram. . . . . . . . . . . . . . . . . . S-7S-7 Main

20、4/8 Schematic Diagram. . . . . . . . . . . . . . . . . . S-8S-8 Main 5/8 Schematic Diagram. . . . . . . . . . . . . . . . . . S-9S-9 Main 6/8 & DVD Open/Close Schematic Diagram . . . . . . . . . . . . . . . . . . . . . . . . S-10S-10Main 7/8 Schematic Diagrams. . . . . . . . . . . . . . . . S-11S-11

21、Main 8/8 Schematic Diagram. . . . . . . . . . . . . . . . . S-12S-12DVD Main 1/3 Schematic Diagram . . . . . . . . . . . . S-13S-13DVD Main 2/3 Schematic Diagram . . . . . . . . . . . . S-14S-14IC101 Voltage Chart . . . . . . . . . . . . . . . . . . . . . . . S-15S-15DVD Main 3/3 Schematic Diagram .

22、 . . . . . . . . . . . S-16S-16Waveforms. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . S-17C CIRCUIT BOARD DIAGRAMSC-1 Main CBA, Sensor CBA, DVD Open/Close CBA, Power SW CBA Top View . . . . . . . . . . . . . . . . . . . . C-1C-2 Main CBA Bottom View . . . . . . . . . . . . . . . . .

23、. . . . . C-2B BLOCK DIAGRAMSB-1 Servo/System Control Block Diagram . . . . . . . . . . . B-1B-2 Video Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . B-2B-3 Audio Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . B-3B-4 Hi-Fi Audio Block Diagram. . . . . . . . . . . . . .

24、. . . . . . B-4B-5 Power Supply Block Diagram. . . . . . . . . . . . . . . . . . B-5B-6 DVD System Control/Servo Block Diagram. . . . . . . B-6B-7 Digital Signal Process Block Diagram . . . . . . . . . . . B-7B-8 DVD Video / Audio Block Diagram. . . . . . . . . . . . . . B-8RadioFans.CN 收音机爱 好者资料库1-

25、11-1 LASER 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 keepyour eyes at least 30cm away from the pickup lens when the diode is turned on. Do not look directly a

26、t the laserbeam.CAUTION: Use of controls and adjustments, or doing procedures other than those specified herein, may result in hazardous radiation exposure.Location: Top of DVD mechanism.Drive Mechanism AssemblyLaser Beam RadiationLaser PickupTurntableLASER RADIATIONWHEN OPEN. DO NOTSTARE INTO BEAM.

27、CAUTIONDo not look directly at the laser beam comingfrom the pickup or allow it to strike against yourskin.CAUTIONS FOR SAFETY IN PERFORMING REPAIR11-21-2 IMPORTANT SAFETY PRECAUTIONS1-2-1 Product Safety NoticeSome electrical and mechanical parts have specialsafety-related characteristics which are

28、often not evi-dent from visual inspection, nor can the protection theygive necessarily be obtained by replacing them withcomponents rated for higher voltage, wattage, etc.Parts that have special safety characteristics are iden-tified by a # on schematics and in parts lists. Use of asubstitute replac

29、ement that does not have the samesafety characteristics as the recommended replace-ment part might create shock, fire, and/or other haz-ards. The Products Safety is under reviewcontinuously and new instructions are issued when-ever appropriate. Prior to shipment from the factory,our products are car

30、efully inspected to confirm withthe recognized product safety and electrical codes ofthe countries 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.1-2-2 Precautions during Servicin

31、gA. 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 spurious radiation. These must also bereplaced only with specified replacements.Examples:

32、 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 leadsD. Use specified insulating materials for hazardouslive parts. Note especially:1)Insulat

33、ion 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 that the wires do not contact heat produc-ing parts (heatsinks, oxide metal film resisto

34、rs, 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 check areas surrounding repaired locations.J. Be careful that foreign objects (screws,

35、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 the transformer,follow these steps carefully and precisely to preventshock hazards.Replac

36、ement 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. If the wires are stranded, twist thestrands to avoid frayed conductors.3)Align the lengt

37、hs 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 connecting or disconnecting the internalconnectors, first, disconnect the AC plug from theAC out

38、let.1-31-2-3 Safety 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. Afterwards, do the following tests and confirmthe specified values to verify compliance with s

39、afetystandards.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 Fig. 1)Table 1 : Ratings for selected areaNote: This table is unofficial and for ref

40、erence 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 termi-nals, antenna terminals, video and audio input andoutput terminals, microphone j

41、acks, 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. Use anAC voltmeter to measure across the terminals of loadZ. See Fig. 2 and the followi

42、ng 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 values.AC Line VoltageLoad ZLeakage Current (i)Earth Ground (B) to:120 V0.15F CAP. & 1

43、.5k RES. Connected in paralleli0.5mA PeakExposed accessible partsChassis or Secondary ConductorddPrimary Circuit TerminalsAC Voltmeter(High Impedance)Exposed Accessible PartBEarth Ground Power Cord Plug ProngsZ1.5k0.15 FFig. 1Fig. 21-41-3 STANDARD NOTES FOR SERVICINGGeneral Note: CBA is an abbreviat

44、ion forCircuit Board Assembly.1-3-1 Circuit 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 male connector is indicated asshown.1-3-2 Instructions for Connectors1. When you

45、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.1-3-3 Pb (Lead) Free SolderWhen soldering, be sure to use the Pb free solder.1-3-4 Instructions f

46、or Handling Semi-conductorsElectrostatic breakdown of the semi-conductors mayoccur due to a potential difference caused by electro-static charge during unpacking or repair work.1. Ground for Human BodyBe sure to wear a grounding band (1M) that is prop-erly grounded to remove any static electricity t

47、hat maybe charged on the body.2. Ground for Workbench(1) Be sure to place a conductive sheet or copper platewith proper grounding (1M) on the workbench orother surface, where the semi-conductors are to beplaced. Because the static electricity charge onclothing will not escape through the body ground

48、-ing band, be careful to avoid contacting semi-con-ductors with your clothing.Top ViewOutInBottom ViewInput510Pin 1Pin 1FFC CableConnectorCBA* Be careful to avoid a short circuit.CBAGrounding BandConductive Sheet orCopper Plate1M1MCBA2-12-1 SPECIFICATIONSDesigns and specifications are subject to cha

49、nge without notice.If there is a discrepancy between languages, the default language will be English.PRODUCT TYPEDVD Player with Video Cassette recorderCONNECTIONSFront panel:Video inputOne RCAconnectorAudio inputTwo RCA connectors (one leftchannel, one right channel)Rear panel:Audio inputTwo RCA co

50、nnectors (one leftchannel, one right channel)Video inputOne RCAconnectorAudio outputTwo RCA connectors (one leftchannel, one right channel)Video outputOne RCAconnectorS-Video outputMini DIN 4-pin jack (75 )Analog audio outputTwo RCA connectors (one leftchannel, one right channel) 2 Vrms (47 k )Coaxi