Hitachi-DVPF74U-cd-sm维修电路原理图.pdf
SERVICE MANUALSERVICE MANUAL Digital Media Division, Tokai DVD PLAYER when removing entire flat pack-IC, first apply soldering iron to center of the flat pack-IC and heat up. 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. The Flat Pack-IC shape may differ by models. Use an appropriate hot-air flat pack-IC desoldering machine, whose shape matches that of the Flat Pack-IC. 2. Do not supply hot air to the chip parts around the flat pack-IC for over 6 seconds because damage to the chip parts may occur. Put masking tape around the flat pack-IC to protect other parts from damage. (Fig. S-1-2) Top View OutIn Bottom View Input 5 10 Pin 1 Pin 1 FFC Cable Connector CBA * Be careful to avoid a short circuit. Fig. S-1-1 1-5 3. The flat pack-IC on the CBA is affixed with glue, so be careful not to break or damage the foil of each pin or the solder lands under the IC when removing it. With Soldering Iron: (1) Using desoldering braid, remove the solder from all pins of the flat pack-IC. When you use solder flux which is applied to all pins of the flat pack-IC, you can remove it easily. (Fig. S-1-3) (2) Lift each lead of the flat pack-IC upward one by one, using a sharp pin or wire to which solder will not adhere (iron wire). When heating the pins, use a fine tip soldering iron or a hot air desoldering machine. (Fig. S-1-4) (3) Bottom of the flat pack-IC is fixed with glue to the CBA; when removing entire flat pack-IC, first apply soldering iron to center of the flat pack-IC and heat up. 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) With Iron Wire: (1) Using desoldering braid, remove the solder from all pins of the flat pack-IC. When you use solder flux which is applied to all pins of the flat pack-IC, you can remove it easily. (Fig. S-1-3) (2) Affix the wire to a workbench or solid mounting point, as shown in Fig. S-1-5. (3) While heating the pins using a fine tip soldering iron or hot air blower, pull up the wire as the solder melts so as to lift the IC leads from the CBA contact pads as shown in Fig. S-1-5 Fig. S-1-2 Hot-air Flat Pack-IC Desoldering Machine CBA Flat Pack-IC Tweezers Masking Tape Fig. S-1-3 Flat Pack-IC Desoldering Braid Soldering Iron Fig. S-1-4 Fine Tip Soldering Iron Sharp Pin 1-6 (4)Bottom of the flat pack-IC is fixed with glue to the CBA; when removing entire flat pack-IC, first apply soldering iron to center of the flat pack-IC and heat up. Then remove (glue will be melted). (Fig. S-1-6) (5)Release the flat pack-IC from the CBA using twee- zers. (Fig. S-1-6) Note: When using a soldering iron, care must be taken to ensure that the flat pack-IC is not being held by glue. When the flat pack-IC is removed from the CBA, handle it gently because it may be damaged if force is applied. 2. Installation (1) Using desoldering braid, remove the solder from the foil of each pin of the flat pack-IC on the CBA so you can install a replacement flat pack-IC more easily. (2) The “I” mark on the flat pack-IC indicates pin 1. (See Fig. S-1-7.) Be sure this mark matches the 1 on the PCB when positioning for installation. Then presolder the four corners of the flat pack-IC. (See Fig. S-1-8.) (3) Solder all pins of the flat pack-IC. Be sure that none of the pins have solder bridges. Fig. S-1-5 To Solid Mounting Point Soldering Iron Iron Wire or Hot Air Blower Fig. S-1-6 Fine Tip Soldering Iron CBA Flat Pack-IC Tweezers Fig. S-1-7 Example : Pin 1 of the Flat Pack-IC is indicated by a mark. Fig. S-1-8 Presolder CBA Flat Pack-IC 1-7 1-3-5 Instructions for Handling Semi-conductors Electrostatic breakdown of the semi-conductors may occur due to a potential difference caused by electro- static charge during unpacking or repair work. 1. Ground for Human Body Be sure to wear a grounding band (1M) that is prop- erly grounded to remove any static electricity that may be charged on the body. 2. Ground for Workbench (4)Be sure to place a conductive sheet or copper plate with proper grounding (1M) on the workbench or other surface, where the semi-conductors are to be placed. Because the static electricity charge on clothing will not escape through the body ground- ing band, be careful to avoid contacting semi-con- ductors with your clothing. CBA Grounding Band Conductive Sheet or Copper Plate 1M 1M CBA 2-1 2-1 SPECIFICATIONS Product type:DVD/VCR Combo (DVD player with Video Cassette Recorder) Discs:DVD video Audio CD Video Cassette tape (VHS) Converter output:VHF Channel 3 or 4. Power source:120 V AC +/- 10%, 60 Hz +/- 0.5% Power consumption:21 W (standby: 3.6 W) Operating temperature:41 F (5 C) to 104 F (40 C) Dimensions:W 17-3/16” (435 mm) H 3-3/4” (94 mm) D 9-3/16” (233 mm) Weight:6.0 lbs (2.7 kg) Designs and specifications are subject to change without notice. If there is a discrepancy between languages, the default language will be English. GENERAL INFORMATION2 2-2 2-2 COMPARISON OF MODELS 2-2-1 GeneralO: Yes, -: No, : Same as on left 2-2-2 VCR SectionO: Yes, -: No, : Same as on left ITEMDV-PF74U/PF74U(C)DV-PF73U/PF73U(C)/PF33U Dimensional435(W) x 94(H) x 233(D)mm435(W) x 99(H) x 218(D)mm Weight2.7 kg3.6 kg Tray Panel / FL WindowClear / ClearSilver / Clear Color Front / ButtonSilver / SilverSilver / Silver (DV-PF73U/PF73U(C) Remote Controller Model NameDV-RMPF74U DV-RMPF73U (DV-PF73U/PF73U(C) DV-RMPF33U (DV-PF33U) Jog Shuttle on Remote- TV Control-O ITEMDV-PF74U/PF74U(C)DV-PF73U/PF73U(C)/PF33U Video FormatVHS Y/C SeparationComb Filter YNR (Luminance Noise Reduction) Circuit O New Synchronize Circuit- Picture Control- Video/Audio Input (Rear)1/1 (IN1) Video/Audio Input (Front)1/1 (IN2) Video/Audio Output (Rear)1/1 (OUT1) Stereo CM Skip Feature- Auto Clock Feature- Number of Timer Programming8 Program/year Self Diagnosis FunctionO (4 Modes) Back-up Time30 s SQPB- Surge AbsorberO Auto Power Off FeatureO Local Broadcast SettingO Multi Search FeatureO (Index, Time Search) Search Speed SP: X5 LP: X5/X9 EP: X5/X15 FF/REW Time (T-120 Tape)FF: approx. 4 min, REW: approx. 4 min Head Composition DA4+Hi-Fi SP: 249/58 m EP: 221/21 m Hi-Fi Audio: 228/28 m Video Head Material SP: Ferrite EP: Ferrite Hi-Fi Audio: Ferrite VISSO (Index Search) APPEARANCE REMOTE CONTROLLER VIDEO INPUT/ OUTPUT OTHERMECHANISM 2-3 2-2-3 DVD SectionO: Yes, -: No (: Same as on left) ITEMDV-PF74U/PF74U(C)DV-PF73U/PF73U(C)/PF33U Drive Speed1x Laser2 DVD/VCD/SVCD/CD-DAO / - / - / O CD-R/CD-RW/DVD-R (Video Format)O / O / O DVD-RAM/DVD-RW (Video Format)- / O- / - JPEG Play backO- MP3O OSD languages3 (English, French, Spanish) Jog Shuttle on Front- Headphone Jack / Volume- / - PAL Disc NTSC Out- Video Out Mode NTSC/PAL/PAL60O / - / - S-Video / Component / CompositeO / O / O Video D/A Converter10bit Black Level SelectO Picture Control- Progressive OutO Audio D/A Converter192kHz / 24bit Digital Audio Out Optical / Coaxial- / O Dolby Digital 5.1 ch Decode- DTS Digital OutO- Virtual SurroundO Dynamic Range Compression (Dolby Digital) O DVD Audio- Power on sound- Search Speed 2 to 100 (FORWARD/REWIND) (DVD: 2, 8, 50, 100/CD: 16) Slow Speed1/16, 1/8, 1/2 (FORWARD/REWIND) IP Search (Smooth 2x Play)O 2x Play with Audio- Step Forward / ReverseO / O Still Picture Select (Frame/Field)Frame/Field/AutoAuto Only Disc NavigationO O (DV-PF73U/PF73U(C) - (DV-PF33U) DVD Zoom x2 / x4O / O Program and Random Play of DVD / VCD - A-B RepeatO RepeatO Last PlayO- Closed Caption for NTSC DVDO Front Panel Display DimmerO Screen SaverO Auto Power OffO (always ON)O GENERALVIDEOAUDIOTRICK PLAYFEATURES 2-4 2-3 COMPARISON OF MAIN CONTROL ICS : Same as on left ITEMDV-PF74U/PF74U(C)DV-PF73U/PF73U(C)/PF33U MICRO CONTROLLERMN35202 (IC101)MN35102 (IC101) FLASH ROMMBM29LV160BM90TN (IC103)MBM29LV160BE90TN-K / MBM29LV1661390PFTNSFK / HY29LV160BT-90 / MX29LV160BTC-90 / M29W166DB70N6 (IC103) LATCH-74LVX573MTCX / TC74LVX573FT(EL) (IC104, IC105) SWNC7SB3157P6X / SN74LVC1G3157DCKR (IC201) NC7SB3157P6X (IC201) OP AMPLM324PWR / LM324PT (IC202)KIA324F-EL (IC202) SERVO DRIVESA5694 / FAN8024CDTF / BA5954FP-E2 / BA5888FP-E2 (IC301) SA5694 / BA5954FP-E2 (IC301) CLOCK GENERATOR-BU2363FV-E2 (IC451) RESETPST3229NR (IC461)PST9127NR / BMR-110527 (IC461) BMR-110529 (IC462) SDRAMK4S641632H-UC75 / VDS6616A4A-7G (IC503) K4S643232F-TC60 / HY57V643220CT-(7,55) (IC102) AUDIO D/A CONVERTERPCM1755DBQR (IC601)PCM1751DBQR (IC601) VIDEO/AUDIO SIGNAL PROCESS/HEAD AMP LA71205M-MPB-E (IC301)LA71091M (IC301) MTS/SAP/Hi-Fi AUDIO PROCESS/Hi-Fi HEAD AMP LA726708M-MPB-E (IC451)LA72670M (IC451) SERVO/SYSTEM CONTROLMN101D08DFT (IC501)- SYSTEM CONTROL MICROPROCESSOR -MN101D08EFD1/QSZACORMS006 (IC501) FIP DRIVERPT6313-S-TP (IC571) OUTPUT SELECTTC4053BF(N) / BU4053BCF / CD4053BCSJX (IC751) TC4053BF(N) / BU4053BCF (IC751) ERROR VOLTAGE DETLTV-817B-F / LTV-817C-F / ELB817A / ELB817B / ELB817C / PS2561A-1(Q) / PS2561A-1(W) (IC1001) LTV-817B-F (IC1001) 1.2V REGPQ070XZ5MZP (IC1002)- 1.5V REG-PQ070XF01SZ (IC1002) 3.3V REGBA3948FP-E2 (IC1004)PQ070XF01SZ (IC1004) SHUNT REGULATOR-KIA431-AT / TL431A-TA / KIA431A-AT (IC1006) AMPKIA4558P / NJM4558D (IC1201) VIDEO DRIVERMM1637XVBE (IC1402)MM1622XJBE (IC1402) MM1636XWRE (IC1403) 2-5 2-4 LIST OF ABBREVIATIONS AND TERMS FOR DVD PLAYER IndexAbbreviation/TermExplanation AAC3See Dolby AC3. CCD-ROne type of DVD standard disc, to which writing once is possible (recordable type) CD-RWOne type of CD standard disc, to which writing up to 1000 times is possible Component video output terminals Used for outputs of HDTV video signal format. Since signals for brightness and colors are independently handled for components signals (Y: luminance signal; PR/PB: chrominance signals), degrading of image will be reduced. DDolby AC3Audio coding format developed by Dolby Laboratories in U.S, also simply referred to as AC3 format: Supports 5-channel full-range sound and one channel for sub-woofer sound playback. D terminalThis terminal, specified by EIAJ (currently JEITA), can automatically switch digital hi-vision programs of BS digital broadcast, and digital standard broadcast of current image quality. A tuner and TV can easily be connected to the D terminal. There are 5 types of D terminal, depending on the different format of video signal passing thorough the D terminal. DTSDigital Theater System: Sound system as for movie theaters developed by US Digital Theater Systems, Inc. The number of channels provided by DTS is the same for Dolby AC3. DVDDigital Versatile Disc. A huge amount of digital data for video (movie) and audio can be recorded on this disc, whose size is the same as CD. DVD-AudioOne type of DVD standard disc, on which high-quality audio can be recorded DVD-ROne type of DVD standard disc, to which writing once is possible (recordable type) DVD-RAMOne type of DVD standard disc, to which writing up to 100,000 times is possible DVD-ROMOne type of DVD standard disc, to which data for computer can be recorded DVD-RWOne type of DVD standard disc, to which writing up to 1000 times is possible DVD-VideoOne type of DVD standard disc, on which high-quality video and audio can be recorded DVD Video FormatVideo recording/playback standard that applies to DVD-Video, DVD-R and DVD-RW DVD Video Recording Format Video recording/playback standard that applies to DVD-RAM and DVD-RW: This allows versatile editing functions, differing from the DVD Video Format. DVD ForumInternational organization that formulates the technical standards of DVD EEIAJElectronic Industries Association of Japan: An organization of manufacturers of consumer electronic devices, industrial electronic devices and electronic components, established in April 1948. EIAJ merged with JEIDA (Japan Electronic Industry Development Association) in November 2000 to become JEITA (Japan Electronics and Information Technology Industries Association). JJPEGJoint Photographic Expert Group: International standard format for compressing still images. LLinear PCMLinear Pulse Code Modulation: LPCM is a format that digitizes analog audio signal during recording and converts it back to analog signal during playback. MMPEGMoving Picture Experts Group: Standard related to compression of digital video and audio. MPEG2 is a higher standard of MPEG and is applied to video (movie) requiring higher quality. MPEG Audio Layer 2One of three audio compression standards (layers 1-3) defined by MPEG MP3MPEG1 Audio Layer-3: Audio data digital compression technology. PProgressive playback function This function converts interlaced images to non-interlaced images and displays them. It can play back 24-frame/second images included in DVD movie software, etc. SSDMISecure Digital Music Initiative: This conference was established by hardware makers, the Recording Industry Association of America (RIAA) and music industry companies, to protect copyrights of musical compositions. VVirtual surroundThis technology localizes sound at any position using only two front speakers, by subjecting the L and R signals to matrix operation. It uses the four transfer functions from L/R speakers located at specified positions to both ears of listener located in a specified position, taking into account the shape of head and the effect of earlobes, and the two transfer functions from any position to both ears. 2-6 2-5 FUNCTION INDICATOR SYMBOLS Note: The following symbols will appear on the indicator panel to indicate the current mode or operation of the VCR. On-screen modes will also be momentarily displayed on the tv screen when you press the operation buttons. TV screen Note: OSD for mechanical error will be displayed for 5 sec. after the mechanical error occurs. When reel and capstan mechanism is not functioning correctly When tape loading mechanism is not functioning cor- rectly When cassette loading mechanism is not functioning correctly When the drum is not working properly Led ModeIndicator Active When reel and capstan mechanism is not functioning correctly “EJECT R” is displayed on a TV screen. (Refer to Fig. 1.) When tape loading mechanism is not func- tioning correctly “EJECT T” is displayed on a TV screen. (Refer to Fig. 2.) When cassette loading mechanism is not functioning correctly “EJECT C” is displayed on a TV screen. (Refer to Fig. 3.) When the drum is not working properly “EJECT D” is displayed on a TV screen. (Refer to Fig. 4.) A R Fig. 1 A T Fig. 2 A C Fig. 3 A D Fig. 4 2-7 2-6 OPERATING CONTROLS AND FUNCTIONS POWER/STANDBY LINES VIDEO INL modeAUDIO IN R REWF.FWDSTOP/EJECTPLAYREC/OTR REC TIMER P R O G R E S S I V E S C A N DIGITAL AUTO TRACKING DVD/VCR Combo DV-PF74U MP3 / JPEG PLAY BACK DVD / CD / CD-R / CD-RW COMPATIBLE STOPPLAY OPEN/CLOSE CHANNEL VCR OUTPUT DVD 1342 681012 14 2079111317 15518 16 19 FRONT PANEL REMOTE CONTROL +10 EJECT 32 SEARCH MODE OPEN/CLOSE 9 ZOOM DISPLAY 8 A
