Hitachi-DVP325U-cd-sm维修电路原理图.pdf

《Hitachi-DVP325U-cd-sm维修电路原理图.pdf》由会员分享，可在线阅读，更多相关《Hitachi-DVP325U-cd-sm维修电路原理图.pdf（54页珍藏版）》请在收音机爱好者资料库上搜索。

1、SERVICE MANUALSERVICE MANUAL Digital Media Products Division, Tokai DVD PLAYERDVD PLAYER SPECIFICATIONS AND PARTS ARE SUBJECT TO CHANGE FOR IMPROVEMENT TKNo. 9202ETKNo. 9202E DV-P325UDV-P325U DV-P323UDV-P323U February2002 REV SURROUNDAUDIOSUB TITLE OPEN / CLOSE FWD POWER / STANDBY RadioFans.CN 收音机爱

2、好者资料库 CONTENTS SPECIFICATIONS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-1-1 COMPARISON OF MODELS . . . . . . . . . . . . . . . . . . . . . . .1-2-1 LASER BEAM SAFETY PRECAUTIONS. . . . . . . . . . . . . .1-3-1 IMPORTANT SAFETY PRECAUTIONS . . . . . . . . . . . . . . .1-4-1 Prod

3、uct Safety Notice . . . . . . . . . . . . . . . . . . . . . . . . . . .1-4-1 Precautions during Servicing. . . . . . . . . . . . . . . . . . . . . .1-4-1 Safety Check after Servicing . . . . . . . . . . . . . . . . . . . . . .1-4-2 STANDARD NOTES FOR SERVICING . . . . . . . . . . . . . . .1-5-1 Circ

4、uit Board Indications . . . . . . . . . . . . . . . . . . . . . . . . .1-5-1 Instructions for Connectors . . . . . . . . . . . . . . . . . . . . . . .1-5-1 How to Remove/Install Flat Pack-IC . . . . . . . . . . . . . . . .1-5-1 Instructions for Handling Semi-conductors . . . . . . . . . . .1-5-3 ORE

5、RATING CONTROLS AND FUNCTIONS . . . . . . . . . .1-6-1 CABINET DISASSEMBLY INSTRUCTIONS . . . . . . . . . . .1-7-1 1. Disassembly Flowchart . . . . . . . . . . . . . . . . . . . . . . . .1-7-1 2. Disassembly Method . . . . . . . . . . . . . . . . . . . . . . . . . .1-7-1 ROM RENEWAL MODE . . . . . .

6、 . . . . . . . . . . . . . . . . . . . . .1-8-1 TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-9-1 BLOCK DIAGRAMS . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-10-1 System Control Block Diagram . . . . . . . . . . . . . . . . . . .1-10-1 RF Signal Process/Servo

7、 Block Diagram . . . . . . . . . . .1-10-2 DVD Signal Process Block Diagram . . . . . . . . . . . . . . .1-10-3 Video Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . .1-10-4 Audio Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . .1-10-5 Power Supply Block Diagram .

8、 . . . . . . . . . . . . . . . . . . .1-10-6 SCHEMATIC DIAGRAMS/CBAS AND TEST POINTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-11-1 DVD Main 1/4 Schematic Diagram . . . . . . . . . . . . . . . .1-11-3 DVD Main 2/4 Schematic Diagram . . . . . . . . . . . . . . . .1-11-4 DVD Main 3/

9、4 Schematic Diagram . . . . . . . . . . . . . . . .1-11-5 DVD Main 4/4 Schematic Diagram . . . . . . . . . . . . . . . .1-11-6 AV 1/3 Schematic Diagram . . . . . . . . . . . . . . . . . . . . . .1-11-7 AV 2/3 Schematic Diagram . . . . . . . . . . . . . . . . . . . . . .1-11-8 AV 3/3, Function when r

10、emoving 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) Caution: 1. Do not supply hot air to the chip parts around the flat pack-IC for

11、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 damage the foil of each pin or the solder lands under the IC when re

12、moving 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 1-5-2 With Soldering Iron: (1)Using desoldering braid, remove the solder f

13、rom 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, u

14、se 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

15、 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 work

16、bench 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 (4) Bottom of the flat pack-IC is fixed with glue to th

17、e 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 tha

18、t 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 Soldering Iron Sharp Pin Fig. S-1-4 To Solid Mounting Point Soldering Iron Ir

19、on Wire or Hot Air Blower Fig. S-1-5 Fine Tip Soldering Iron CBA Flat Pack-IC Tweezers Fig. S-1-6 1-5-3 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 can install a replacement flat pack-IC more easily. (2)The “I” mark on

20、 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. Instruc

21、tions 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

22、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 thr

23、ough 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 Band Conductive Sheet or Copper Plate 1M 1M 1-6-1 REV SURROUNDAUDIOSUB T

24、ITLE OPEN / CLOSE FWD POWER / STANDBY 123 4 5 6 7 1213 8 91011 DV-P325U only FRONT PANEL REMOTE CONTROL +10 CLOSE 3 MODE 2 SEARCHOPEN 9 ZOOM DISPLAY 8 AUDIO 0 TOP MENU SETUP FF PLAY SKIP SEARCH CH 56 1 A-B REPEAT REPEAT 7 CLEAR SUBTITLE MODE ANGLE RETURN MENU STOP FR SEARCH TV POWER VIDEO/TV 4 SURRO

25、UND DV-P325U only PAUSE/STEP VOL TV DV RM ENTER 24 25 26 27 29 30 31 32 6 15 5 14 1 23 3 21 9 20 10 19 18 17 16 12 7 4 22 28 33 34 11 1.(POWER/STANDBY) Button 2. Disc loading tray 3. OPEN/CLOSE Button 4. PLAY Button 5. STOP Button 6. SKIP DOWN/REV Button Plays back from the beginning of the current

26、chapter or track. Hold down to fast reverse play- back. 7. SKIP UP/FWD Button Plays back from the beginning of the next chap- ter or track. Hold down to fast forward playback. 8. Shuttle Ring (REV/FWD) Turn to make rewind or fast forward speed faster in the forward or backward direction in the Play

27、mode or Still mode. The further the Shuttle Ring is rotated, the faster the playback speed. 9. AUDIO Button Press to select a desired audio language or sound mode. 10. SUBTITLE Button Press to select a desired subtitle language. 11. SURROUND Button 12. PAUSE/STEP Button 13. Display, Remote Sensor Wi

28、ndow 14. TV POWER Button 15. VIDEO/TV Button 16. VOL Button 17. CH Button 18. FF SEARCH Button 19. SETUP Button 20. TOP MENU Button 21. DISPLAY Button 22. Numeric Buttons 23. SEARCH MODE Button 24. A-B REPEAT Button 25. REPEAT Button 26. MODE Button 27. ZOOM Button 28. CLEAR Button 29. ANGLE Button

29、Press to change the camera angle to see the sequence being played back from a different angle. 30.MENU Button 31. ENTER Button 32. Arrow Buttons Use when making settings while watching the display on a TV screen. 33. RETURN Button 34. FR SEARCH Button OPERATING CONTROLS AND FUNCTIONS 1-6-2 DISPLAY D

30、ISPLAYS DURING OPERATION LOADING THE BATTERIES Power on No disc inserted Tray open Tray closed Loading the Disc Power off 1. Open the battery compartment cover. 2. Insert two AA batteries, with each one oriented correctly. 3. Close the cover. Notes Do not mix alkaline and manganese batteries. Do not

31、 mix old and new batteries. 1-6-3 DESCRIPTION-REAR PANEL S-VIDEO OUT COMPONENT VIDEO OUT ANALOG AUDIO OUT DIGITAL AUDIO OUT VIDEO OUT Y CB CR RLCOAXIALOPTICAL 12345 1. DIGITAL AUDIO OUT JACKS: Use either an optical or coaxial digital cable to connect to a comcompatible Dolby Digital receiber. Use to

32、 connect to a Dolby Digital decoder or DTS decoder. 2. ANALOG AUDIO OUT JACKS Connect to the Audio input jacks of A/V-compatible TV or wide screen TV, Stereo system. 3. VIDEO OUT JACK Use a video cable to connect one of the jack to Video input on your A/V-compatible TV or wide screen TV, Stereo syst

33、em. 4. COMPONENT VIDEO OUT JACKS Use these jacks if you have a TV with Component Video in jacks. These jacks provide CR, CBand Y video. Along with S-Video, Component Video provides the best picture quality. 5. S-VIDEO OUT JACK Use the S-Video cable to connect this jack to the S-Video jack on your A/

34、V-compatible TV or wode screen TV for a higher quality picture. DV-P325U only 1-7-1 CABINET DISASSEMBLY INSTRUCTIONS 1. Disassembly Flowchart This flowchart indicates the disassembly steps to gain access to item(s) to be serviced. When reassembling, follow the steps in reverse order. Bend, route, an

35、d dress the cables as they were originally. 2. Disassembly Method (1): Identification (location) No. of parts in the figures (2): Name of the part (3): Figure Number for reference (4): Identification of parts to be removed, unhooked, unlocked, released, unplugged, unclamped, or desoldered. P=Spring,

36、 L=Locking Tab, S=Screw, CN=Connector *=Unhook, Unlock, Release, Unplug, or Desolder e.g. 2(S-2) = two Screws (S-2), 2(L-2) = two Locking Tabs (L-2) (5): Refer to “Reference Notes.” Reference Notes CAUTION 1: Locking Tabs (L-1), (L-2) and (L-3) are fragile. Be careful not to break them. 1-1. Connect

37、 the wall plug to an AC outlet and press the OPEN/CLOSE button to open the Tray. 1-2. Remove the Tray Panel by releasing two Locking Tabs (L-1). 1-3. Press the OPEN/CLOSE button again to close the Tray. 1-4. Press the POWER/STANDBY button to turn the power off and unplug an AC cord. 1-5. Disconnect

38、connector CN2002. 1-7. Release two Locking Tabs (L-2). Then, release five Locking Tabs (L-3) (to do this, first release two Locking Tabs (A) at the side, and then three Locking Tabs (B) at the bottom.) CAUTION 2: Electrostatic breakdown of the laser diode in the optical system block may occur as a p

39、otential difference caused by electrostatic charge accumulated on cloth, human body etc, during unpacking or repair work. To avoid damage of pickup follow next procedures. 2-1. Slide out the pickup unit as shown in Fig. 5. 2-2. Short the three short lands of FPC cable with sol- der before removing t

40、he FFC cable (CN101) from it. If you disconnect the FFC cable (CN101), the laser diode of pickup will be destroyed. (Fig. 5) 2-3. Disconnect Connector (CN401). Remove three Screws (S-3) and lift the DVD Mecha. (Fig. 4) CAUTION 3: When reassembling, confirm the FFC cable (CN101) is connected complete

41、ly. Then remove the solder from the three short lands of FPC cable. (Fig. 5) ID/ LOC. No. PART REMOVAL Fig. No. REMOVE/*UNHOOK/ UNLOCK/RELEASE/ UNPLUG/DESOLDER Note 1Top Cover15(S-1)- 2 Front Assembly 2 *2(L-1), Tray Panel, *2(L-2), *CN2002, *5(L-3), 1-1 1-2 1-3 1-4 1-5 1-6 3 Function CBA 3 5(S-2),

42、Jog Shuttle Key - 4 DVD Mecha 4,5 3(S-3), *CN101, *CN401 2 2-1 2-2 2-3 3 5AV CBA6 4(S-4), (S-5)- DV-P325U only, 4(S-6),*2(L-4), *CN1001, *CN1601 - 6 DVD Main CBA Unit 63(S-7)- 7 Rear Panel 73(S-8)- (1) (2) (3) (4) (5) 1 Top Cover 2 Front Assembly3 Function CBA 4 DVD Mecha 6 DVD Main CBA Unit5 AV CBA

43、 7 Rear Panel 1-7-2 (S-1) (S-1) 1 Top Cover (S-1) Fig. D1 2 Front Assembly Tray Panel (A) (A) (L-3) (L-2) (L-1) (L-1) (B) Fig. D2 3 Function CBA Jog Shuttle Key (S-2) Fig. D3 4 DVD Mecha (S-3) (S-3) CN101 CN401 Fig. D4 DVD Mecha Bottom View Pickup Unit A Short the three short lands by soldering View

44、 for A Slide Fig. D5 5 AV CBA 6 DVD Main CBA Unit (S-7) (L-4) (S-4) DV-P325U only (S-5) (S-6) CN1601 CN1001 (S-6) Fig. D6 1-7-3 7 Rear Panel (S-8) Fig. D7 HOW TO MANUAL EJECT 1. Remove the Top Case. 2. Insert the eject-bar (length = approximately 80 mm, diameter = approximately 3 mm) into the manual

45、 eject hole on the DVD Mecha. Then, press it until the tray is ejected. Eject-Bar (Length = approximately 80 mm, Diameter = approximately 3 mm) Manual Eject Hole DVD Mecha Tray Top Case 1-8-1 ROM RENEWAL MODE 1. Turn the power on and remove the disc on the tray. 2. To put the DVD player into version

46、 up mode, press 9, 8, 7, 6, and SEARCH MODE buttons on the remote control unit in that order. The tray will open automatically. Fig. a appears on the screen and Fig. b appears on the VFD. The DVD player can also enter the version up mode with the tray open. In this case, Fig. a will be shown on the

47、screen while the tray is open. 3. Load the disc for version up. (For closing the tray, only the OPEN/CLOSE button is available.) 4. The DVD player enters the F/W version up mode automatically. Fig. c appears on the screen and Fig. d appears on the VFD. The appearance shown in (*2) of Fig. c is descr

48、ibed as follows: 5. After programming is finished, the tray opens auto- matically. Fig. e appears on the screen and the checksum in (*3) of Fig. e appears on the VFD. (Fig. f) At this time, no buttons are available. 6. For tray opening, plug the AC cord into the AC out- let. 7. Turn the power on by

49、pressing the power button and the tray will close. BE F/W VERSION UP MODE PLEASE INSERT A DISC FOR BE F/W VERSION UP. EXIT: POWER Fig. a Version Up Mode Screen Fig. b VFD in Version Up Mode BE F/W VERSION UP MODE VERSION:H1223S1E Reading.(*2) Fig. c Programming Mode Screen Fig. d VFD in Programming Mode (Example) AppearanceNo.State Reading.Sending files into the memory Erasing.Erasing previous version data Programming. 1 2 3Writing new version data BE F/W VERSION UP MODE VERSION: * COMPLETED SUM:7abc(*3) Fig. e Completed Program Mode Screen F