Hitachi-DVP705U-cd-sm 维修电路原理图.pdf

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1、TK No.9010ESPECIFICATIONS AND PARTS ARE SUBJECT TO CHANGE FOR IMPROVEMENTDVD PLAYERSERVICE MANUAL2000SeptemberDigital Media Products Division, TokaiDV-P705EDV-P705E(UK)DV-P705UDVD/CD/VIDEO CD PLAYER DV-P705VIRTUALSURROUNDOPEN/CLOSEDISCNAVIGATIONTOP MENUPUSH ENTERMENUSTOPSKIPFWDREVPLAY/ PAUSE/IRadioF

2、ans.CN 收音机爱 好者资料库PRODUCT SAFETY NOTICE Many electrical and mechanical parts have special safety-related characteristics. These are often not evident from visualinspection nor can the protection afforded by them necessarily be obtained by using replacement components rated for ahigher voltage, wattag

3、e, etc. Replacement parts which have these special safety characteristics are identified in thisService Manual. Electrical components having such features are identified by marking with a on the schematics andthe parts list in this Service Manual. The use of a substitute replacement component which

4、does not have the samesafety characteristics as the HITACHI recommended replacement one, shown in the parts list in this Service Manual, maycreate shock, fire, or other hazards. Product safety is continuously under review and new instructions are issued fromtime to time. For the latest information,

5、always consult the current HITACHI Service Manual. A subscription to, oradditional copies for, HITACHI Service Manual may be obtained at a nominal charge from HITACHI SALESCORPORATION.LASER RADIATIONDo not stare atthe laser beamCAUTIONRadioFans.CN 收音机爱 好者资料库NOTICE:Comply with all cautions and safety

6、 related noteslocated on or inside the cabinet and on the chassis.1. When replacing a chassis in the instrument, all theprotective devices must be put back in place, such asbarriers, non-metallic knobs, adjustment andcompartment covers/shields, isolation resistors/capacitors, etc.2. When service is

7、required, observe the original lead-ress. Extra precautions should be taken to assurecorrect lead dress in the high voltage circuit.3. Always use the manufacturers replacementcomponents. Especially critical components asindicated on the circuit diagram should not bereplaced by other manufacturers. F

8、urthermore,where a short-circuit has occurred, replace thosecomponents that indicate evidence of overheating.4. Before returning an instrument to the customer, theservice technician must thoroughly test the unit to becertain that it is completely safe to operate withoutdanger of electrical shock, an

9、d be sure that noprotective device built into the instrument by themanufacturer has become defective or inadvertentlydefeated during servicing. Therefore, the followingchecks should be performed for the continuedprotection of the customer and service technician.Leakage Current Cold CheckWith the AC

10、plug removed from the AC120V, 60Hzsource, place a jumper across the two plug prongs.Turn the AC power switch on. Using an insulationtester (DC500V), connect one lead to the jumperedAC plug and touch the other lead to exposed metalparts (antennas, screwheads, metal overlays,control shafts, etc.), par

11、ticularly any exposed metal parthaving a eturn path to the chassis. Exposed metalparts having a return path to the chassis should have aminimum resistor reading of 0.3 Mohm and a maximumresistor reading of 5 Mohm. Any resistor value belowor above this range indicates an abnormality whichrequires cor

12、rective action. Exposed metal parts nothaving a return path to the chassis will indicate an opencircuit.Leakage Current Hot CheckPlug the AC line cord directly into a AC120V, 60Hzoutlet (do not use an isolation transformer for thischeck).Turn the AC power switch on. Using a LeakageCurrent Tester, me

13、asure for current from allexposed metal parts of the cabinet (antennas,screwheads, metal overlays, control shaft, etc.),particularly an exposed metal part having a returnpath to the chassis, to a known ground (earth) (waterpipe, conduit, etc.). Any current measured must notexceed 0.5 mA.SAFETY PRECA

14、UTIONSAC Leakage TestANY MEASUREMENTS NOT WITHIN THE LIMITSOUTLINED ABOVE ARE INDICATIVE OF A POTENTIALSHOCK HAZARD AND MUST BE CORRECTEDBEFORE RETURNING THE UNIT TO THE CUSTOMER.PRODUCT SAFETY NOTICEMany electrical and mechanical parts have special safety-related characteristics. These are often no

15、t evident fromvisual inspection nor can the protection afforded by themnecessarily be obtained by using replacementcomponents rated for a higher voltage, wattage, etc.Replacement parts which have these special safetycharacteristics are identified in this Service Manual.Electrical components having s

16、uch features are identifiedby marking with aon the schematics and the parts listin this Service Manual. The use of a substitutereplacement component which does not have the samesafety characteristics as the HITACHI recommendedreplacement one, shown in the parts list in this ServiceManual, may create

17、 shock, fire, or other hazards. Productsafety is continuously under review and new instructionsare issued from time to time. For the latest information,always consult the current HITACHI Service Manual. Asubscription to, or additional copies for, HITACHI ServiceManual may be obtained at a nominal ch

18、arge fromHITACHI SALES CORPORATION.DEVICEUNDER TEST(READINGSHOULD NOTBE ABOVE0.5mA)LEAKAGE CURRENTTESTERTEST ALL EXPOSEDMETAL SURFACES2-WIRE CORDALSO TEST WITHPLUGREVERSED(USING ACADAPTER PLUG ASREQUIRED)GROUND(EARTH)LASER RADIATIONDo not stare atthe laser beamCAUTIONNotes When Using Service ManualT

19、he following shows the contents to be noted when using service manual: 1. Value units used in parts listThis table shows locations of each part on circuit boarddiagrams. The locations are indicated using the guidescales on the external lines of diagrams.1) One diagram indicated for each boardThe val

20、ues, dielectric strength (power capacitance) andtolerances of the resistors (excluding variable resistors)and capacitors are indicated in the schematic diagramsusing abbreviations.ResistorsCertain symbols are indicated below for value units ofresistors, capacitors and coils in parts list. When you r

21、eadthem note the following regular indications:Indication in listRegular indicationKOHM.kUF.FPF.pFUH.HMH.mHPartsResistorCapacitorCoil2) Two diagrams indicated for each board 2. Values in schematic diagramsItemValueTolerancePowercapacitance IndicationNo indication.K.kM.MNo indication. 5%(All toleranc

22、es other than 5% areindicated in schematic diagrams)No indication. 1/8W(1/16W for leadless resistors withoutindication)All capacitances other than the aboveare indicated in schematic diagrams.CapacitorsItemValueDielectricstrength IndicationNo indication.FP.pFNo indication. 50V(All dielectric strengt

23、hs other than 50Vare indicated in schematic diagrams)ItemValue Indication.Hm.mHCoils 3. Identifications of sides A/B incircuit board diagrams1) Board having a pattern on one side and parts onboth sides.Side A:Shows discrete parts, viewed from thepattern side.Side B:Shows leadless parts, viewed from

24、thepattern side.2) Board having patterns on both sides and parts onboth sides.Side A:Shows parts and patterns which can beseen when the case is opened.Side B:Shows parts and the pattern on the back ofside A. 4. Table for indexing locations of partsPartsLocation2 ASymbolNo.ICIC1201Type of partZone A

25、on board diagramCircuit No.Zone 2 on board diagramPartsLocationA - 2 ASymbolNo.ICIC1201Zone 2 on boarddiagramA: Shows side AB: Shows side BZone A on boarddiagramType of partCircuit No.CONTENTS CHAPTER 1GENERAL INFORMATION1. Specifications . 1-12. Comparison with Previous Model. 1-23. Troubleshooting

26、. 1-4 3-1. VIDEO CIRCUIT . 1-4 3-2. AUDIO CIRCUIT . 1-54. Self-Diagnosis Function . 1-65. Instructions on Use. 1-9 CHAPTER 2DISASSEMBLY1. Before Starting Disassembly . 2-12. Disassembly Method . 2-1Parts Hierarchy Chart . 2-1Disassembly Procedure Diagrams . 2-2 2-1. Top cover . 2-2 2-2. Tray panel,

27、Front panel,FSW board and MVR board . 2-3 2-3. Rear panel . 2-4 2-4. VID board and REG board . 2-5 2-5. AUD board and DEC board . 2-5 2-6. DVD-ROM and Bottom cover . 2-6CHAPTER 3EXPLODED VIEW1. CABINET SECTION . 3-1CHAPTER 4REPLACEMENT PARTS LIST1. MECHANICAL PARTS LIST . 4-1SCHEMATIC, CIRCUIT BOARD

28、CHAPTER 5AND BLOCK DIAGRAMCONNECTION DIAGRAM . 5-1 SCHEMATIC/CIRCUIT BOARD FRONT SWITCHFSW . 5-3 / 5-23 POWER SWITCHMVR . 5-5 / 5-23 VIDEO JACKVID. 5-6 / 5-20 AUDIO JACKAUD . 5-7 / 5-21 REGURATORREG . 5-9 / 5-25 DECK-1DEC . 5-11 / 5-16 DECK-2DEC . 5-13 / 5-16BLOCK DIAGRAM . 5-271 - 1CHAPTER 1GENERAL

29、 INFORMATIONGeneralSCART terminalFor DV-P705E/E(UK)Component video outputFor DV-P705US Video output terminalVideo outputAudio outputOther terminalsAccessories1. SpecificationsSpecification and exterior aspect of the model may be changed for improvements without advance notice.Operating Laser.Semi-co

30、nductor laser: Wave length 650nm (DVD).780nm (CD,VCD)Power supply.DV-P705E/E(UK): AC230V, 50Hz.DV-P705U: AC120V, 60HzPower consumption.24WWeight.3.4kgOverall size.434(W)284(D)91(H)mmAllowable operating temperature.+5C+35CAllowable operating humidity.1575%(no condensation)AV connector output.20 pin c

31、onnectorThis connector provides the video and signals for connection to a colour video TVmonitor (or TV set) which has a AV CONNECTOR terminal.Y output level.1 Vp-p (75 ohm)PB output level NTSC.0.7 Vp-p (75 ohm) PAL.0.698 Vp-p (75 ohm)PR output level NTSC.0.7 Vp-p (75 ohm) PAL.0.698 Vp-p (75 ohm)Out

32、put terminal.Pin JackY output level.1 Vp-p (75 ohm)C output level NTSC.0.286 Vp-p(75 ohm) PAL.0.3 Vp-p (75 ohm)Output terminal.S terminalOutput level.1 Vp-p (synchronous when loaded at 75 ohm)Output terminal.pin jackOutput level.200m Vrms (1kHz, -20dB)Mixed 2ch Output.1 system (pin jack 2)5.1 ch Out

33、put.1 system (pin jack 6)Sound characteristicsDigital Audio output Optical/CoaxialCoaxial terminal.1(DTS/AC-3/MPEG2, LPCM, OFF commutable)Optical connector.1Remote control unit.1signal AA batteries.2AV cord.1Power cord.1Frequency characteristicsCD: 4Hz20kHz (EIAJ)DVD: 4Hz22kHz (48k sampling)4Hz44kHz

34、 (96k sampling)SN ratio110dBDynamic range100dBTotal harmonic distorion rate0.003%Wow flutterticsMeasurement limit less than(0.001% W.PEAK) (EIAJ)1 - 22. Comparison with Previous ModelDV-P705E/E(UK)/UDV-P505E/E(UK)/UGeneralDimension434(W)x284(D)x91(H)mm434(W)x284(D)x91(H)mmWeight3.4kg3.7kgRegion Code

35、2For E/E(UK), 1For U2For E/E(UK), 1For UPower Requirement230V 50HzFor E/E(UK),230V 50HzFor E/E(UK),120V 60HzFor U120V 60HzFor UPower Consumption24W24WRegulationCE(CB)For E/E(UK),CE(CE)For E/E(UK),C-UL/DOCFor UC-UL/DOCFor UDVD-ROM DriveHAD-2505GD-2501 or(2X Speed /2-Laser 1-lens)HAD-2505(2X Speed /2-

36、Laser 1-lens)Playable Disc TypeDVD/VCD/CD-DAO/O/OO/O/OCVD/SVCD-/-/-CD-R/CD-RWO/OO/ODisc Size8cm/12cm8cm/12cmPAL/NTSC DiscO/OO/OVideoDigital Analog Converter10 bit10 bitComposite Video Output Connectorx1(US pin)x1(US pin)S-Video Output Connectorx1(S Terminal)x1(S Terminal)Component Video Output Conne

37、ctor(525i)x1(US 3pin)For Ux1(US 3pin)For USCART Connectorx1For E/E(UK)x1For E/E(UK)D Terminal-Universal Video OutputAuto, NTSC, PAL, PAL60Auto, NTSC, PAL, PAL60Universal Video Output DefaultPAL For E/E(UKI, NTSCFor UPALFor E/E(UK), NTSCFor UBlack Level0, 7.5IRE0IREFor E/E(UK), 7.5IREFor UClosed Capt

38、ion for NTSC DVDOOSharpnessSharp,Natural,Soft-Still PictureAuto,Hi-Resolution,- FlickerlessY-Level ControlO-HUE Level ControlO-NR(Digital Noise Reduction) ON/OFF-Gamma Correction Control-Progressive Output-24 Frame Source Progressive Output-24 Frame Source Indicator-AudioDigital Analog Converter96KH

39、z/24bit96KHz/24bitAudio output Connector2ch L/R+5.1ch(US 8pin)2ch L/R+5.1ch(US 8pin)Digital Audio Output-Opticalx1x1Digital Audio Output-Coaxialx1(US pin)x1(US pin)Headphone Jack with Volume Control-Karaoke-Mic Jack-MPEG2 Audio Down -Mix 2chAnalog/LPCMAnalog/LPCMMPEG2 Multi channelDigitalDigitalDolb

40、y Digital Down-mix 2chAnalog/LPCMAnalog/LPCMDolby Digital Multi ChannelAnalog/DigitalAnalog/DigitalOSD Speaker Configuration(Level, Delay)OODTS OutputDigitalDigitalDolby Pro Logic Decode-OVirtual Surround (Spatializer N-2-2)Analog-WideAnalog-1 - 3Dynamic Range CompressionOO(only Dolby Digital)MP3 Re

41、ad-Playback FeaturesJog/Shuttle on Front PanelO-Disc NavigationNew Mark2 : Moving-Picture(I search) & Quick Title ChangeFF2x(IP search),10 x,30 x,120 x(I search)2x(IP search),5,10 x,100 x(I search)Reverse Play, FR1x,2x,10 x,30 x,120 x(I search)1x,2x,5x,10 x,100 x(I search)Slow Forward1/8,1/2(full fr

42、ame)1/8,1/4,1/2(full frame)Slow Reverse-1/8,1/4,1/2(full frame)StepForward(full frame), Reverse(I picture)Forward, Reverse(ull Frame)Parental LookOOZoom x2/x4(DVD)OOProgram and Random PlayOVCD,CD onlyRepeatA-B, Disc, Title(DVD),A-B(DVD),A-B, Track(VCD, CD) Chapter(DVD), Track(VCD, CD)Last PlayNewODi

43、splay/Operating ConvenienceEasy PlayOOOSD languages5 (English, French, German, Italian,5 (English, French, German, Italian,Spanish)For E/E(UK)Spanish)For E/E(UK)8 (English, French,German,Italian,8 (English, French,German,Italian,Spanish, Chinese, Simple Chinese,Spanish, Chinese, Simple Chinese,Japan

44、ese)For UJapanese)For UOSD Display On/OffOOScreen SaverOOAuto Power OffOOVacuum Fluorescent Display DimmingBright, Dim, Dark, Auto DimmingLight, Dim, NormalOpening Logo Screen with SoundO-AccessoriesRemote Control Unitwith Jog/Shuttle & PictureOBatteries 1pair for Remote ControllerOOAV cableOOAC Pow

45、er CordRound 2P/3P (UK)For E/E(UK)Round 2P/3P (UK)For E/E(UK)Flat 2p(U)For UFlat 2p(U)For U1 - 43. Troubleshooting3-1. VIDEO CIRCUITARE SIGNALSOUTPUT FROM VIDEOOUTPUT TERMINAL?YesNoCHECK SIGNALCABLE/ MONITORCHECK VIDEO OUTPUTSECTOR (PG1302/ J1307/ J1302/ J1306/ J1361) OF JAK PWBCHECK IC3301/ IC3302

46、of JAK PWBCHECK IC1201/ IC1101/ IC1601CHECK POWER SUPPLY CIRCUITCHECK IC1601CHECK X2201/ R1218REPLACE IC2202ARE SIGNALSOUTPUT FROM PG2201pins 17, 15, 13, 11, 9, 7, 3?ARE SIGNALS IC2202 pins14, 15, 16, 20, 21?+5V AT IC2202pins 46, 34, 32, 30, 27, 19, 11, 1 (VDD)?IS VOLTAGE ATIC2202 pins 44(RESET) H L

47、EVEL?IS CLOCK INIC2202 pin 48?YesNoYesNoNoYesNoYesNoYesNoYesARE SIGNALSOUTPUT FROM IC2202 pins 35, 33, 29, 28, 25, 24?NO IMAGE1 - 5IS THEREAN IMAGE?NoYesBREAKDOWN BEFORE IC1201CHECK IC1506 OR +8V LINE ETC.CHECK IC1101/ IC1601BREAKDOWN OF Q1505 OR Q1506 OR D1504BREAKDOWN OF IC1501, IC1507ARE IC1501pi

48、ns 8, 9, 15, 205V?ARE THERE SIGNALS AT IC1501PINS 13, 16 and IC1507 pins 9-14?IS Q1505BASE VOLTAGE0V?IS Q1505COLLECTOR VOLTAGE8V?IS IC1501 pin 21and IC1507 pin 3-6 VOLTAGE 5V?NoYesNoYesNoYesNoYesNoYesNoYesARE THERE SIGNALS AT IC1501 pins 1, 2, 3, 5 AND IC1507 pins 40, 41, 45, 46, 47, 38?NO SOUNDIS Q

49、1507, Q1501COLLECTOR VOLTAGE 8V?YesARE SIGNALS ATIC1507-IC1514pins 7, 8?YesBREAKDOWN OF Q1306-Q1311, Q3503, Q3504NoBREAKDOWN OF IC1201BREAKDOWN OF IC1506YesARE IC1506 pin 3 +5V & pin 1 +8VARE THERE SIGNALS AT IC1501pins 26,27,28 andIC1507 pins 34, 35, 36?BREAKDOWN OF IC1501NoBREAKDOWN OF Q1507, Q150

50、1NoBREAKDOWN OF IC1507-IC1514No3-2. AUDIO CIRCUIT1 - 61. OverviewThis DVD player has two types of self-diagnosis function for differing operation methods:(1) Self-diagnosis started automatically when power is turned on(2) Self-diagnosis activated when test mode is selected by pressing buttons on pla