Hitachi-DVW1U-cd-sm 维修电路原理图.pdf

TK No.9006ESPECIFICATIONS AND PARTS ARE SUBJECT TO CHANGE FOR IMPROVEMENTDVD PLAYER . CD RECORDERSERVICE MANUAL2000MayDigital Media Products Division, TokaiDV-W1URadioFans.CN 收音机爱 好者资料库NOTICE:Comply with all cautions and safety 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 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. Furthermore,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, and 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 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.), particularly 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 corrective 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, measure 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 PRECAUTIONSAC 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 not 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 such 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 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 charge fromHITACHI SALES CORPORATION.DEVICEUNDER TEST(READINGSHOULD NOTBE ABOVE0.5mA)LEAKAGE CURRENTTESTERTEST ALL EXPOSEDMETAL SURFACES2-WIRE CORDALSO TEST WITHPLUGREVERSED(USING ACADAPTER PLUG ASREQUIRED)GROUND(EARTH)RadioFans.CN 收音机爱 好者资料库Notes When Using Service ManualThe 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 values, 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 readthem 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 tolerances 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 strengths 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 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 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.1-4 3-1. VIDEO CIRCUIT.1-4 3-2. AUDIO CIRCUIT.1-5 3-3. RECORDER AUDIO CIRCUIT.1-64. Instructions on Use.1-7 CHAPTER 2DISASSEMBLY1. Before Starting Disassembly.2-12. Disassembly Method.2-1Parts Hierarchy Chart.2-1Disassembly Procedure Diagrams.2-2 2-1. Side cover(L),(R) and Top cover.2-2 2-2. Rear panel.2-2 2-3. JAK and REG board.2-3 2-4. Front cover, IF, FLHP,SW-DVD and SW-CDR board.2-3 2-5. DVD-ROM and DEC board.2-4 2-6. CD-R and Bottom cover.2-4CHAPTER 3EXPLODED VIEW1. CABINET SECTION.3-1CHAPTER 4REPLACEMENT PARTS LIST1. MECHANICAL PARTS LIST.4-12. ELECTRICAL PARTS LIST.4-1SCHEMATIC, CIRCUIT BOARDCHAPTER 5AND BLOCK DIAGRAMSCONNECTION DIAGRAM.5-1 SCHEMATIC/CIRCUIT BOARD LCD DISPLAYFLPH.5-3 / 5-25 DVD SWITCHSW-DVD.5-5 / 5-20 CDR SWITCHSW-CDR.5-5 / 5-20 INTERFACEIF.5-6 / 5-23 REAR JACKJAK.5-7 / 5-21 REGURATORREG.5-9 / 5-23 DECK-1DEC.5-11 / 5-16 DECK-2DEC.5-13 / 5-16BLOCK DIAGRAM.5-271 - 1CHAPTER 1GENERAL INFORMATIONGeneralComponent video outputS Video output terminalVideo outputAudio outputAudio inputOther terminalsHeadphone outputAccessories1. SpecificationsSpecification and exterior aspect of the model may be changed for improvements without advance notice.Operating Laser.Semi-conductor laser: Wave length 650nm (DVD).780nm (CD,VCD)Power supply.AC120V, 60HzPower consumption.27WStand-by power consumption.3.5WWeight.4.8kgOverall size.435(W)330(D)81(H)mmAllowable operating temperature.+5C+35CAllowable operating humidity.1575%(no condensation)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)Output terminal.pinj ackY 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 OUTPUT.1 system (pin jack 6)Sound characteristicsInput level.200mVrms (1kHz,-20dB) 1 system (pin jack 2)Digital Audio output Optical/CoaxialCoaxial terminal.1(DTS/AC-3/MPEG2, LPCM, OFF commutable)Optical connector.1Digital Audio input optical/coaxialCoaxial terminal.1(DTS/AC-3/MPEG2, LPCM, OFF commutable)Optical connector.1Output level.15 mW, 32 ohm (mini jack)Remote control unit.1signal AA batteries.2AV cord.1Ferrite core.1Frequency characteristicsCD: 4Hz20kHz (EIAJ)DVD: 4Hz22kHz (48k sampling)4Hz44kHz (96k sampling)SN ratio110dBDynamic range100dBTotal harmonic distorion rate0.003%Wow flutterticsMeasurement limit less than(0.001% W.PEAK) (EIAJ)1 - 22. Comparison with Previous ModelDimensionWeightRegion CodeOSD languagesPlaying DefaultPower Requirement (Common Power Supply)Power ConsumptionRegulationFront-End Solution(Drive)Remote ControllerPlayable Disc TypeDVD/VCD/CD-DACVD/SVCD/DVCDCD-R/CD-RWDisc SizePAL/NTSC DiscRAM ReadRecordable Disc TypeCD-R/CD-RW for AudioVideoUniversal Video Output SelectVideo Digital to Analog ConverterVideo DefaultBlack Level Select (0/7.5) by Setup MenuClosed Caption for NTSC DVDS-Video Output ConnectorComponent Video Output Connector (US pin)Composite Video Output ConnectorD TerminalSCART ConnectorSCART RGB Signal ON/OFF by Setup MenuSharpness Select by Setup MenuStill picture selection with Setup MenuY-Level Control by Setup MenuHUE Level Control by Setup MenuSharpness Control(Picture Button by Remote Control)Hue Control (Picture Button by Remote Control)AudioAudio Digital to Analog ConverterAudio output ConnectorDigital Audio Output-OpticalDigital Audio Output-CoaxialHeadphone Jack with Volume ControlNew KaraokeMic JackMPEG2 Audio Down -Mix 2chMPEG2 Multi channelAC-3 Audio Down-mix 2chAC-3 Dolby Multi Channel outputOSD Speaker ConfigurationDTS OutputDolby Pro Logic DecodeVirtual Surround (Spatializer N-2-2) 5.1ch SourceDV-W1U435mm(W) 330mm(D) 81mm(H)4.8kg13 (English,French,Spanish)English120V 60Hz27WUL/CSA/FCCDVD:GD-2501(2-laser 2-lens)-CD-R/RW:CRD-RA1WO2w/ Jog/ShuttleO/O/OO/O/(O)O/O8cm/12cmO/OO/OAuto/NTSC/PAL/PAL6010 bitNTSCOO1111Sharp, Natural, SoftAuto, Hi-Resolution, FlickerlessOOOO96kHz/24bit2ch L/R+5.1ch111 (3.5 Jack)Analog/LPCMDigitalAnalog/LPCMAnalog/DigitalDigitalAnalogDV-P250U434mm(W) 315mm(H) 98mm(D)3.9kg13 (English,French,Spanish)English120V 60Hz27WUL/C-UL/FCCGD-2501w/o Jog/ ShuttleO/O/OO/O/(O)O/O8cm/12cmO/OAuto/NTSC/PAL/PAL6010 bitNTSCOO111OSharp, Natural, SoftAuto, Hi-Resolution, Flickerless96kHz/24bit2ch L/R+5.1ch11Analog/LPCMDigitalAnalog/LPCMAnalog/DigitalDigitalAnalog1 - 3AnalogOOOOF 1/2, 1/8, 1, 2, 5, 10, 30R 1, 2, 5, 10, 30F(Full Frame), R(I)OOOO16 any discsOOOOOOOOAnalogOOOOO1 moving video without audioForward 1/2,1/8, 1 (these with full-frame); 2(IP search); 1, 2, 10,30, 120 x (these in search)Reverse 1, 2, 10, 30, 120(these in search)Forward(full-frame), Reverse(I only)OO (W/ Indicater)OBoth DVD and CDR: A-B Repeat,DVD: Disc, Title/Chapter,Track (with VCD/CD)16 any discsOx2OOOOOOBright, Dim, Dark, Auto DimmingOOOVirtual Surround (Wide)2ch SourceSurround Select by Remote Controller on/offDynamic Range Compression(only AC-3)MP3 ReadAudio Input ConnectorDigital Audio Input-OpticalDigital Audio Input-CoaxialPlayback FeaturesJog/Shuttle on Front PanelNew Disc NavigationMulti Speed Scan (Forward)Multi Speed Scan (Reverse)Step ModeParental Look (DVD)Zoom 2 4 (DVD)Skip/Program and Random Play by SetupMenuRepeatLast Play (DVD)Easy Play (Papa-Mamma Mode)Recording Features (for Audio CD-R/RW)Digital high-speed dubbing(from CD-DA to CD-R/RW)Simple Dubbing ButtonRecording Level Control for Analog Audio InputProgram RecordingDisplay/Operating ConvenienceOSD Display On/Off User SelectableScreen SaverAuto Power OffVFD Dimming Select by Setup MenuAccessoriesRemote Control UnitBatteries 1 pair for Remote ControllerAV cable1 - 43. Troubleshooting3-1. VIDEO CIRCUITARE SIGNALSOUTPUT FROM VIDEOOUTPUT TERMINAL?YesNoCHECK SIGNALCABLE/ MONITORCHECK VIDEO OUTPUTSECTOR (PG1302/ J1307/ J1302/ J1306/ J1361) OF JAK PWBCHECK IC3301/ IC3302 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 LEVEL?IS CLOCK INIC2202 pin 48?YesNoYesNoNoYesNoYesNoYesNoYesARE SIGNALSOUTPUT FROM IC2202 pins 35, 33, 29, 28, 25, 24?NO IMAGE1 - 5IS THEREAN IMAGE?NoYesBREAKDOWN BEFORE IC1201CHECK IC1505 OR +8V LINE ETC.CHECK IC1101/ IC1601BREAKDOWN OF Q1505 OR Q1506 OR D1504BREAKDOWN OF IC1501, IC1507ARE IC1501pins 8, 9, 15, 205V?ARE THERE SIGNALS AT IC1501PINS 13, 15 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 Q1507, Q1501COLLECTOR VOLTAGE 8V?YesARE SIGNALS ATIC1507, IC1508,IC1509, IC1510pins 7, 8?YesBREAKDOWN OF Q1305, Q1307-Q1311, Q3503, Q3504NoBREAKDOWN OF IC1201BREAKDOWN OF IC1506YesARE IC1505 pin 3 +5V & pin 1 +8VARE THERE SIGNALS AT IC1501pins 26,27,28 andIC1507 pins 34, 35, 36?BREAKDOWN OF IC1501NoBREAKDOWN OF Q1507, Q1501NoBREAKDOWN OF IC1507, IC1508, IC1509, IC1510No3-2. AUDIO CIRCUIT1 - 63-3. RECORDER AUDIO CIRCUITARE THERE SIGNALSAT PG1304 pins 1, 3?NoYesBREAKDOWN CRD-RA1CHECK Q3510, Q3511 AND Q3512CHECK IC1512 AND IC1513CHECK IC1507, IC1508, D3301, D1302, Q3543, Q3544, Q1310, Q1311, Q3505, Q3506,Q1312, Q1313, ZD3501, ZD1303CHECK C3515, C3516, C1503, C1504, R3517, R3518, R1579, R1580ARE IC1512 pins 6, 12 AND IC1513 pins 6, 120V?ARE THERE SIGNALS AT IC1507 pins 7, 8 AND IC1508 pins 7, 8?NoYesNoYesNoYesARE THERE SIGNALSAT IC1507 pins 5, 10AND IC1508 pins 5, 10?NO SOUND1 - 74. Instructions on Use (The following are extracts from the instruction manual. )FRONTDisplays the status and message of this unitLights when the input level exceeds 0 dB during dubbing or recording.Type of disc inserted into the playerLights when the angle can be switchedTitle, track or chapter being selected or played back ,SurroundPlayback controlRemaining disc playback time or recordable timeType of disc inserted into the recorderLights when the track number is automatically advanced during recordingDouble-speed dubbing (x2)Repeat play Lights when the stop position is in memory.41474650544220191924455237 /IPOWER/STANDBYOPEN/CLOSEDISPLAYOPEN/CLOSEDUB MODEPHONESLEVEL REC LEVEL DUB STARTACTIVEACTIVESOURCEFINALIZEUNFINALIZEERASESYNCTRACKNO.AUTO/MANUALSTOPPLAY/PAUSESTOPPLAY/PAUSEREC STANDBYSKIPSKIPMINMAXHeadphone jack (PHONES)Player trayRecorder trayDUB START buttonDUB MODE buttonSOURCE buttonFINALIZE buttonUNFINALIZE buttonERASE buttonRecorder OPEN/CLOSE buttonSYNC buttonPOWER/STANDBY buttonSTANDBY indicatorSTOP buttonPLAY/PAUSE buttonSKIP butto