Hitachi-DVPF73U-cd-sm维修电路原理图.pdf

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1、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) (1) Release the flat pack-IC from the CBA using twee- zers. (Fig. S-1-6) Caut

2、ion: 1. 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) 2. The flat pack-IC on the CBA is affixed with glue, so be careful not to b

3、reak or damage the foil of each pin or the solder lands under the IC when removing it. 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 Hot-air Flat Pack-IC Desoldering Machine CBA Flat Pack-IC Tweezers Masking Tape Fig. S-1-

4、2 1-5 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

5、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-

6、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 p

7、ack-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 s

8、hown in Fig. S-1-5 (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.

9、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. Flat Pack-IC Desoldering Braid Soldering Iron Fig. S-1-3 Fine Tip Sol

10、dering Iron Sharp Pin Fig. S-1-4 To Solid Mounting Point Soldering Iron Iron Wire or Hot Air Blower Fig. S-1-5 Fine Tip Soldering Iron CBA Flat Pack-IC Tweezers Fig. S-1-6 1-6 2. Installation (1)Using desoldering braid, remove the solder from the foil of each pin of the flat pack-IC on the CBA so yo

11、u 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

12、flat pack-IC. Be sure that none of the pins have solder bridges. 1-3-4 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 t

13、o 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

14、 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. Example : Pin 1 of the Flat Pack-IC is indicated by a mark.Fig. S-1-7 Presolder CBA Flat Pack-IC Fig. S-1-8 CBA CBA Groun

15、ding Band Conductive Sheet or Copper Plate 1M 1M 2-1 Product type:DVD/VCR Combo (DVD player with Video Cassette Recorder) Discs:DVD video Audio CD Video Cassette tape Converter output:VHF Channel 3 or 4. Power source:120 V AC +/- 10%, 60 Hz +/- 0.5% Power consumption:24 W (standby: 7.0 W) Operating

16、temperature:41F(5C) to 104(F40C) Dimensions:W 17-1/8” (435 mm) H 3-7/8” (99 mm) D 8-5/8” (218 mm) Weight:8.1 lbs (3.7 kg) Designs and specifications are subject to change without notice. 2-1 SPECIFICATIONS GENERAL INFORMATION2 2-2 2-2 COMPARISON OF MODELS 2-2-1 General 2-2-2 VCR Section: Same as on

17、left ITEMDV-PF73U/PF73U(C)/PF33UDV-PF2U Dimensional435(W) x 99(H) x 218(D)mm435(W) x 99(H) x 266(D)mm Weight3.7kg4.0kg Tray PanelClear Color Front/BUtton Silver/Silver (DV-PF73U/PF73U(C) Black/Silver (DV-PF33U) Silver/Silver Hot Stamp- Remote Controller Model Name DV-RMPF73U (DV-PF73U/PF73U(C) DV-RM

18、PF33U (DV-PF33U) DV-RMPF2 Jog Shuttle on Remote- TV Control O (DV-PF73U/PF73U(C) - (DV-PF33U) O ITEMDV-PF73U/PF73U(C)/PF33UDV-PF2U 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

19、 Input (Front)1/1 (IN2) Video/Audio Output (Rear)1/1 (OUT1) Stereo CM Skip FeatureO Auto Clock FeatureO Number of Timer Programming8 Program/year7 Program/year Self Diagnosis FunctionO (4 Modes)- Back-up Time30 s60 s SQPBO Surge AbsorberO Auto Power Off FeatureO Local Broadcast SettingO Multi Search

20、 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) APPEA

21、RANCE REMOTE CONTROLLER VIDEO INPUT/ OUTPUT OTHERMECHANISM 2-3 2-2-3 DVD Section: Same as on left ITEMDV-PF73U/PF73U(C)/PF33UDV-PF2U Drive Speed1x Laser2 DVD/VCD/SVCD/CD-DAO / - / - / O CD-R/CD-RW/DVD-R (Video Format)O / O / O DVD-RAM (VR Format)- MP3O OSD languages3 (English, French, Spanish) Jog S

22、huttle 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- / OO

23、/ O Dolby Digital 5.1 ch Decode- DTS Digital Out- O 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) 2 to 60 (FORWARD/REWIND) (DVD: 2, 8, 30, 60/CD: 16) Slow Speed1/16, 1/8, 1/2 (FORWARD/REWIND

24、)1/16, 1/8, 1/2 (FORWARD only) IP Search (Smooth 2x Play)O 2x Play with Audio- Step Forward / ReverseO / OO / - Still Picture Select (Frame/Field)Auto Only Disc Navigation O (DV-PF73U/PF73U(C) - (DV-PF33U) - DVD Zoom x2 / x4O / O Program and Random Play of DVD / VCD -O / O A-B RepeatO RepeatO Last P

25、layO Closed Caption for NTSC DVDO Front Panel Display DimmerO Screen SaverO Auto Power OffO GENERALVIDEOAUDIOTRICK PLAYFEATURES 2-4 POWER/STANDBY CHANNEL PLAYSTOP/EJECT VIDEO IN F.FWDREWREC/IRTTIMERRECDVD OUTPUT VCRSTOPPLAY OPEN/CLOSE L (mono) AUDIO IN R LINE 2 1342 6810121420 79111317192115 5 1816

26、FRONT PANEL REMOTE CONTROL +10 EJECT 3 MODE 2 SEARCHOPEN/CLOSE 9 ZOOM DISPLAY 8 AUDIO 0 TOP MENU SETUP PLAY SKIPCH CH 56 1 A-B REPEAT REPEAT 7 CLEAR/C. RESET SUBTITLE/TIMER MODE ANGLE DVDVCR/TV DISC NAVIGATION VCR SLOWSPEEDREC RETURN MENU STOP TV POWER VIDEO/TV 4 SURROUND PAUSE/STEP VOL TV ENTER 23

27、22 24 25 26 27 28 29 30 31 33 32 34 58 59 57 54 53 55 56 36 39 38 51 49 50 52 48 47 40 41 42 46 45 44 43 37 35 1. Disc loading tray 2. OPEN/CLOSE Button Press to insert discs into or remove them from the tray. 3. CASSETTE COMPARTMENT 4. POWER Light Lights up when the power is on. 5. POWER/STANDBY Bu

28、tton Press to turn the power on and off. 6. CHANNEL Buttons In VCR mode, press to change TV channels on the VCR; press to adjust the tracking during normal or slow motion playback; press to remove vertical jitter in a Still picture. 7. PLAY Button(VCR) Press to begin playback. 8. STOP/EJECT Button (

29、VCR) EJECT Button Press to remove the tape from the VCR. STOP Button Press to stop the tape motion. 9. AUDIO In Jacks Connect audio cables coming from the audio out jacks of a camcorder, another VCR, or an audio source here. 10. VIDEO In Jack Connect a video cable coming from the video out jack of a

30、 camcorder, another VCR, or a video source (laser disc player, camcorder, etc.) here. 11. F.FWD Button (VCR) Press to rapidly advance the tape, or view the picture rapid- ly in forward during playback. (Forward Search). 12. REW Button (VCR) Press to rewind the tape, or to view the picture rapidly in

31、 reverse during the playback mode (Rewind Search). 13. REC/IRT Button Press once to start a recording. Press repeatedly to start a Instant Recording Timer. 14. REC Light Lights up during recording. 15. TIMER Light This light glows when the DVD/VCR is in standby mode or off for a timer recording or d

32、uring a Instant Recording Timer. It flashes if TIMER is pressed for a timer recording, but there is no tape in the DVD/VCR. It flashes when all timer recordings or Instant Recording Timer, are finished. 16 VCR OUTPUT Light (Green) This light appears when the VCR output mode is selected. You can only

33、 watch tapes when the green VCR OUTPUT light is on. To make the green VCR OUTPUT light come on, VCR on the remote control or OUTPUT on the front panel. 17. OUTPUT Button Press to select DVD mode or VCR mode. You can switch the output mode either by pressing OUTPUT on the front panel, or by pressing

34、DVD or VCR on the remote control. However, if you press OUTPUT on the front panel first, you need to re- select the corresponding mode by pressing DVD or VCR on the remote control. 18. DVD OUTPUT Light (Green) This light appears when the DVD output mode is selected. You can only watch DVDs when the

35、green DVD OUTPUT Light is on. To make the green DVD OUTPUT light come on, press DVD on the remote control or OUTPUT on the front panel. 19. Display, Remote Sensor Window 20. PLAY Button (DVD) Press to begin playback. 21. STOP Button (DVD) Stops operation of the disc. 22. SURROUND Button Press to act

36、ivate the 3D sound. 23. yy/I(POWER/STANDBY) Button Press to turn the power on and off. (As to the indication of the Operate switch, “I” shows ON and “yy/I” shows electrical power stand-by.) 24. A-B REPEAT Button Repeats playback of a selected section. 25. REPEAT Button Repeats playback of the curren

37、t disc, title, chapter or track. 26. MODE Button Activates program playback or random playback mode when playing CDs or MP3. Sets Black level and virtual surround. 27. ZOOM Button Enlarges part of a DVD-reproduced image. 2-3 OPERATING CONTROLS AND FUNCTIONS DV-PF73U/PF73U(C) 2-5 28. CLEAR/C.RESET Bu

38、tton DVD mode Press to reset the setting. VCR mode Press to reset the counter. Press to exit from the MENU screen. 29. ANGLE Button Press to change the camera angle to see the sequence being played back from a different angle. 30. SUBTITLE Button Press to select the desired subtitle language. 35. TI

39、MER Button Press to put the VCR into standby mode for a timer record- ing. 31. MENU Button DVD mode Press to display the menu of the Disc. VCR mode Press to access the VCR menu. 32. Arrow Buttons DVD mode 44.p/oB sButtons Move the cursor and determines its position. VCR mode 44.p/o Buttons Press to

40、enter digits when setting program (For example: setting clock or timer program). Press to select the setting modes from the on screen menu. B Button When setting program (For example: setting clock or timer program), press to determine your selection and proceed to the next step you want to input. P

41、ress to determine the set- ting modes from the on screen menu. Press to add or delete channel numbers during channel preset. s Button Press to cancel a setting of timer program. Press to correct digits when setting program (For example: setting clock or timer program). Press to add or delete channel

42、 numbers during channel preset. 33. ENTER Button Press to accept a setting. 34. RETURN Button Returns to the previous operation. 35. VCR/TV Button Use to select VCR or TV position. This DVD/VCR does not have VCR/TV light. If noise appears on your TV when you turn on DVD/VCR(VCR mode), press this but

43、ton. VCR Position To view playback, to monitor video recordings or to watch TV using the VCR tuner. TV Position To watch TV or to view one program while recording another. DISC NAVIGATION Button Use to DISC NAVIGATION function. 36.DVD Button Press to select DVD mode for the remote control. You can s

44、witch the OUTPUT mode either by pressing OUTPUT on the front panel, or by pressing DVD or VCR on the remote control. However, if you press OUTPUT on the front panel first, you need to re-select the corre- sponding mode by pressing DVD orVCR on the remote control. 37. SLOW Button During tape playback

45、, press to view the video tape in slow motion. Press again to resume normal playback. This but- ton does not affect DVD playback. 38. SKIP Buttons DVD mode Press to skip Chapters or Tracks. 39. STOP Button DVD mode Press to stop the disc motion. VCR mode Press to stop the tape motion. 40. h Button D

46、VD mode Press to view the DVD picture in fast reverse motion or to reverse playback of an Audio CD. VCR mode Press to rewind the tape, or to view the picture rapidly in reverse during the playback mode (Rewind Search). 41. TV POWER Button To exclusively turn ON/OFF the TV. 42. VIDEO/TV Button Press

47、to select the external input mode or TV mode of the TV. 43.VOL p/o Buttons Press to exclusively control the TV volume. 44. TV CH p/o Buttons Press to exclusively control the TV channels. 45. PAUSE/STEP Button DVD mode Press to pause Disc playback. Press repeatedly to advance the DVD picture step by

48、step (or one frame at a time). VCR mode While recording, press to temporarily stop the recording (pause). Press a second time to resume normal recording. You can not pause a Instant Recording Timer. Or, press during tape playback to freeze the picture. Press to advance the picture one frame at a tim

49、e during still mode. 46. D Button DVD mode Press to fast forward the Disc. Press PAUSE/STEP, then press this button to begin slow motion playback. Press this button repeatedly to change the forward speed of slow motion. VCR mode Press to rapidly advance the tape, or view the picture rapidly in forward during playback (Forward Search). 47. PLAY Button DVD mode Press to begin playback. VCR mode Press to begin playback. 48. CH Button Press to change TV channels on the DVD/VCR. 49. REC Button Press once to start a recordin