Hitachi-DVPF2E-cd-sm维修电路原理图.pdf

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1、SERVICE MANUALSERVICE MANUAL Digital Media Division 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.

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) 2. The flat pack-IC on the CBA is affixed with glue, so be careful not to break or

3、 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-1-2 E1-4-

4、2 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

5、 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 a

6、nd 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-

7、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

8、 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. S-1-

9、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 Solderi

10、ng 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 E1-4-3 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

11、 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 f

12、lat pack-IC. Be sure that none of the pins have solder bridges. 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

13、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 (1) 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

14、. 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 Grounding B

15、and Conductive Sheet or Copper Plate 1M 1M E1-5-1 PREPARATION FOR SERVICING How to Enter the Service Mode About Optical Sensors Caution: An optical sensor system is used for the Tape Start and End Sensors on this equipment. Carefully read and follow the instructions below. Otherwise the unit may ope

16、rate erratically. What to do for preparation Insert a tape into the Deck Mechanism Assembly and press the PLAY button. The tape will be loaded into the Deck Mechanism Assembly. Make sure the power is on, TP501 (SENSOR INHIBITION) to GND. This will stop the function of Tape Start Sensor, Tape End Sen

17、- sor and Reel Sensors. (If these TPs are connected before plugging in the unit, the function of the sensors will stay valid.) See Fig. 1. Note: Because the Tape End Sensors are inactive, do not run a tape all the way to the start or the end of the tape to avoid tape damage. About REC-Safety Switch

18、Caution: The REC-Safety Switch is directly mounted on the Main CBA. When the Deck Mechanism Assembly is removed from the Main CBA for servicing, this switch does not work automatically. What to do for preparation In order to record, press the Rec button while pushing REC-SAFETY SW on the Main CBA. S

19、ee Fig. 1. (REC-SAFETY SW) SW506 Q504TP501 S-INH Q503 Fig. 1 E1-6-1 FRONT PANEL REMOTE CONTROL +10 CLOSE 3 QUICK-FIND 2 SEARCH MODE/OPEN/ 9 ZOOM DISPLAY 8 AUDIO 0 SETUP SKIPCH 56 1 A-B REPEAT REPEAT 7 SUBTITLE MODE ANGLE DVDSURROUNDVCR SLOWSPEEDREC RETURN MENU 4 ENTER TOP MENU/SHOWVIEW DAILY/WEEKLY

20、INDEX SEARCH TIME SEARCH MENU SELECT ENTER CLEAR/C.RESET 27 28 29 30 31 32 33 34 35 36 37 57 58 56 52 53 54 55 39 42 41 50 48 49 51 47 46 4345 44 40 38 1. Disc loading tray 2. DVD OUTPUT Light (Green) This light appears when the DVD output mode is select- ed. You can only watch DVDs when the green D

21、VD OPEN/ CLOSE DVDVCR TIMER SET STANDBY CST.IN OUTPUT CHANNEL VIDEO IN L (mono) R AUDIO IN 12 364587 9 26 25 24 23 22 21 20 19 18 17 16 15 14 13 10 11 12 OPEN/ CLOSE DVDVCR TIMER SET STANDBY CST.IN OUTPUT CHANNEL VIDEO IN L (mono) R AUDIO IN OUTPUT Light is on. To make the green DVD OUT- PUT light c

22、ome on, press the DVD Button on the remote control or the OUTPUT Button on the front panel. 3. VCR OUTPUT Light (Green) This light appears when the VCR output mode is selected. You can only watch tapes when the green VCR OUTPUT light is on. To make the green VCR OUTPUT light come on, the VCR Button

23、on the remote control or the OUTPUT Button on the front panel. 4. CASSETTE COMPARTMENT 5. REC/OTR Light Lights up during recording. 6. TIMER SET Light This light glows when the DVD/VCR is in standby mode or off for a timer recording or during a One- Touch Recording. It flashes if the TIMER SET Butto

24、n is pressed for a timer recording, but there is no tape in the DVD/VCR. It flashes when all timer recordings or One Touch Recording are finished. 7.(Standby/Power ON) Button Press to turn the power on and off. 8.(Standby/Power ON) Light Lights up when the power is on. 9. VIDEO In Jack Connect a vid

25、eo cable coming from the video out jack of a camcorder, another VCR, or a video source (laser disc player, etc.) here. 10. AUDIO In Jacks Connect audio cables coming from the audio out jacks of a camcorder, another VCR, or an audio source here. 11. TIMER SET Button Press to put the DVD/VCR into stan

26、dby mode for a timer recording. 12. STANDBY Light Lights up when the DVD/VCR is plugged in. 13. CST. IN Light Lights up when a cassette is in the DVD/VCR. 14. CHANNEL Buttons In VCR mode, press to change TV channels on the DVD/VCR; press to adjust the tracking during nor- mal or slow motion playback

27、; press to remove verti- cal jitter in a Still picture. 15. REC/OTR Button (VCR) Press once to start a recording. Press repeatedly to start an One Touch Recording Timer. VCR operation Buttons : Blue DVD operation Buttons : Green Common operation Buttons : White OPERATING CONTROLS AND FUNCTIONS DV-PF

28、2E E1-6-2 16. g(F.FWD) Button (VCR) Press to rapidly advance the tape, or view the picture rapidly in forward during playback. (Forward Search). When setting programme (For example:set- ting clock or timer programme), press to determine your selection and proceed to the next step you want to input.

29、Press to determine the setting modes from the on screen menu. 17. B(PLAY) Button (VCR) Press to begin playback. Press to enter digits when setting programme (For example: setting clock or timer programme). Press to select the setting modes from the on screen menu. 18. h(REW) Button (VCR) Press to re

30、wind the tape, or to view the picture rapid- ly in reverse during the playback mode (Rewind Search). Press to cancel a setting of timer pro- gramme. Press to correct digits when setting pro- gramme (For example: setting clock or timer pro- gramme). 19. C/A(STOP/EJECT) Button (VCR) EJECT Button Press

31、 to remove the tape from the DVD/VCR. STOP Button Press to stop the tape motion. Press to enter digits when setting programme (For example:setting clock or timer programme). Press to select the set- ting modes from the on screen menu. 20. OUTPUT Button Press to select DVD mode or VCR mode. You can s

32、witch the output mode of the DVD/VCR either by pressing the OUTPUT Button on the front panel, or by pressing the DVD or VCR Button on the remote control. However, pressing only the OUTPUT Button on the front panel does not switch the output mode of the remote control. If you want to use the remote c

33、ontrol, you always need to select the correct output mode on the remote control, too. 21. g/G(SKIP) Button (DVD) Plays back from the beginning of the next chapter or track. Hold down to fast forward playback. 22. B(PLAY) Button (DVD) Starts playback of the disc contents. 23.j/h(SKIP) Button (DVD) Pl

34、ays back from the beginning of the current chapter or track. Hold down to fast reverse playback. 24. C(STOP) Button (DVD) Stops operation of the disc. 25. OPEN/CLOSE Button Press to insert discs into or remove them from the tray. 26. Display, Remote Sensor Window 27.(Standby/Power ON) Button Press t

35、o turn the power on and off. 28. A-B REPEAT Button Repeats playback of a selected section. 29. REPEAT Button Repeats playback of the current disc, title, chapter or track. 30. MODE Button Activates programme playback or random playback mode when playing CDs or MP3. Sets Black level or SRS TruSurroun

36、d. 31. ZOOM Button Enlarges part of a DVD-reproduced image. 32. CLEAR/C.RESET Button DVD mode Press to reset the setting. VCR mode Press to reset the counter. 33. ANGLE Button Press to change the camera angle to see the sequence being played back from a different angle. 34. MENU Button DVD mode Pres

37、s to display the menu of the Disc. VCR mode Press to access the VCR menu. 35. ENTER Button Press to accept a setting. 36. Arrow Buttons (L/K/s/B) Use when making settings while watching the display on a TV screen. 37. RETURN Button Returns to the previous operation. 38. SURROUND Button Press toenjoy

38、 stereophonic sound system when you playback Dolby Digital and PCM 48kHz sound. 39. DVD Button Press to select DVD mode for the remote control. You can switch the output mode of the DVD/VCR either by pressing the OUTPUT Button on the front panel, or by pressing the DVD or the VCR Button on the remot

39、e control. However, pressing only the OUTPUT Button on the front panel does not switch the output mode of the remote control. If you want to use the remote control, you always need to select the correct output mode on the remote control, too. 40. SLOW Button (VCR) During tape playback, press to view

40、 the video tape in slow motion. Press the BButton to resume normal playback. This Button does not affect DVD playback. 41. SKIP Buttons (j/G) (DVD) Press to skip Chapters or Tracks. INDEX SEARCH Button (j) (VCR) Press to perform Index Search. TIME SEARCH Button (G) (VCR) Press to perform Time Search

41、. 42. C(MENU SELECT/STOP) Button DVD mode Stops operation of the disc. VCR mode Press to stop the tape motion. Press to enter digits when setting programme (For example: setting clock or timer programme). Press to select the set- ting modes from the on screen menu. 43. h (REV/REW) Button DVD mode Pr

42、ess 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 rapid- ly in reverse during the playback mode (Rewind Search). Press to cancel a setting of timer pro- gramme. Press to correct digits when setting pro-

43、 gramme (For example: setting clock or timer pro- gramme). E1-6-3 44. F(PAUSE/STILL) Button DVD mode Press to pause Disc playback. Press repeatedly to advance the DVD picture step by step (or one frame at a time). VCR mode While recording, press to temporarily stop the recording (pause). Press a sec

44、ond time to resume normal recording. You can not pause a One Touch Recording. Or, press during tape playback to freeze the picture. Press to advance the picture one frame at a time during still mode. 45. g(ENTER/FWD/F.FWD) Button DVD mode Press to fast forward the Disc. Press the F Button, then pres

45、s this Button to begin slow motion play- back. Press this Button repeatedly to change the forward speed of slow motion. VCR mode Press to rapidly advance the tape, or view the pic- ture rapidly in forward during playback (Forward Search). When setting programme (For example: setting clock or timer p

46、rogramme), press to deter- mine your selection and proceed to the next step you want to input. Press to determine the setting modes from the on screen menu. 46. B(MENU SELECT/PLAY) Button DVD mode Press to begin playback. VCR mode Press to begin playback. Press to enter digits when setting programme

47、 (For example: setting clock or timer programme). Press to select the setting modes from the on screen menu. 47. CH Buttons (L/K) (VCR) In VCR mode, press to change TV channels on the DVD/VCR; press to adjust the tracking during nor- mal or slow motion playback; press to remove verti- cal jitter in

48、a Still picture. 48. REC Button (VCR) Press once to start a recording. 49. SPEED Button (VCR) Press to select the VCRs recording speed (SPor LP). 50. VCR Button Press to select VCR mode for the remote control. You can switch the output mode of the DVD/VCR either by pressing the OUTPUT Button on the

49、front panel, or by pressing the DVD or the VCR Button on the remote control. However, pressing only the OUTPUT Button on the front panel does not switch the output mode of the remote control. If you want to use the remote control, you always need to select the correct output mode on the remote control, too. 51. SETUP Button Press to enter the setup mode. 52. SUBTITLE Button Press to select the desired subtitle language. 53. TOP MENU/SHOWVIEWButton DVD mode Press to bring up the Top Menu on a disc. VCR mode Press to programme timer recording with the SHOWVIEWsystem. 54