Philips-DVD-723-743-Service-Manual电路原理图.pdf

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1、Published by MW 0263 Service PaCCopyright 2002 Philips Consumer EAll rights reserved. No part of this publretrieval system or transmitted, in anymechanical, photocopying, or otherwDVD-Video Player DVD723-743DVD723 /001 /021 /051DVD743 /001 /021 /051Power Supply Unit 44 45AV Board: Video & SCART (Dia

2、gram A1) 46 49-52AV Board: Audio (Diagram A2) 47 49-52AV Board: Regulated Supply (Diagram A3) 48 49-52Testpoint Overview 53Front DVD723: Display (Diagram D) 54 55-57Front DVD723: Standby (Diagram S) 58 58E Printed in the Netherlands Subject to modification EN 3122 785 12240lectronics B.V. Eindhoven,

3、 The Netherlands. ication may be reproduced, stored in a form or by any means, electronic, ise without the prior permission of Philips.Front DVD743: Display (Diagram D) 59 60-62Front DVD743: Standby (Diagram S) 63 63Switching 64SCART 65 66-688 Alignments (Not Applicable) 699 Circuit Descriptions, Li

4、st of Abbreviations, and IC Data 6910 Spare Parts List 742 Safety Instructions, Warnings, Notes,and Service Hints 43 Directions for Use 64 Mechanical- and Dismantling Instructions 195 Diagnostic Software, Trouble Shooting and Test Instructions 226 Wiring-, Block DiagramsBlock Diagram 41Wiring Diagra

5、m 42/437 Electrical Diagrams and Print-Layouts Diagram PWBContents Page1 Technical Specs and Connection Facilities 2Technical Specifications and Connection FacilitiesEN 2 DVD 723-7431.1. Technical Specifications and Connection Facilities1.1 DVD723/0X1PLAYBACK SYSTEMDVD VideoVideo CD & SVCDCD (CD-Rec

6、ordable and CD-Rewritable)MP3 CDTV STANDARD (PAL/50Hz) (NTSC/60Hz)Number of lines 625 525Playback Multistandard (PAL/NTSC)VIDEO PERFORMANCEVideo output 1 Vpp into 75 ohmRGB (SCART) output 0.7 Vpp into 75 ohmBlack Level Shift On/OffVideo Shift Left/RightAUDIO FORMATDigital MPEG CompressedDigitalDolby

7、 Digital 16, 20, 24 bitsPCM fs, 44.1, 48, 96 kHzMPEG MP3 MPEG Audio L3Analogue Stereo SoundDolby Surround-compatible downmix from Dolby Digitalmulti-channel sound3D Sound for virtual 5.1 channel sound on 2 speakersAUDIO PERFORMANCEDA Converter 24 bitsDVD fs 96 kHz 4 Hz - 44 kHzDVD/SVCD fs 48 kHz 4 H

8、z - 22 kHzSVCD/VCD/CD fs 44.1 kHz 4 Hz - 20 kHzSignal-Noise (1kHz) 105 dBDynamic Range (1kHz) 100 dBCrosstalk (1kHz) 105 dBDistortion and Noise (1kHz) 90 dBMPEG MP3 MPEG Audio L3CONNECTIONSSCART EuroconnectorS-Video Output Mini DIN, 4 pinsVideo Output Cinch (yellow)Audio L+R output Cinch (white/red)

9、Audio Subwoofer Cinch (black)Digital Output 1 coaxial, 1 opticalIEC958 for CDDA / LPCMIEC1937 for MPEG1/2, DolbyDigitalCABINETDimensions (w x h x d) 435 x 75 x 302 mmWeight Approximately 2.8 Kg* typical playing time for movie with 2 spoken languages and3 subtitle languagesSpecifications subject to c

10、hange without prior noticeTechnical Specifications and Connection Facilities EN 3DVD 723-743 1.1.2 DVD743/0X1PLAYBACK SYSTEMDVD VideoVideo CD & SVCDCD (CD-Recordable and CD-Rewritable)MP3 CDTV STANDARD (PAL/50Hz) (NTSC/60Hz)Number of lines 625 525Playback Multistandard (PAL/NTSC)VIDEO PERFORMANCEVid

11、eo output 1 Vpp into 75 ohmRGB (SCART) output 0.7 Vpp into 75 ohmBlack Level Shift On/OffVideo Shift Left/RightAUDIO FORMATDigital MPEG CompressedDigitalDolby Digital 16, 20, 24 bitsPCM fs, 44.1, 48, 96 kHzMPEG MP3 MPEG Audio L3Analogue Stereo SoundDolby Surround-compatible downmix from Dolby Digita

12、lmulti-channel sound3D Sound for virtual 5.1 channel sound on 2 speakersAUDIO PERFORMANCEDA Converter 24 bitsDVD fs 96 kHz 4 Hz - 44 kHzDVD/SVCD fs 48 kHz 4 Hz - 22 kHzSVCD/VCD/CD fs 44.1 kHz 4 Hz - 20 kHzSignal-Noise (1kHz) 110 dBDynamic Range (1kHz) 100 dBCrosstalk (1kHz) 105 dBDistortion and Nois

13、e (1kHz) 90 dBMPEG MP3 MPEG Audio L3CONNECTIONSSCART 2x EuroconnectorS-Video Output Mini DIN, 4 pinsVideo Output Cinch (yellow)Audio L+R output 2x Cinch (white/red)Audio Subwoofer Cinch (black)Digital Output 1 coaxial, 1 opticalIEC958 for CDDA / LPCMIEC1937 for MPEG1/2, DolbyDigitalCABINETDimensions

14、 (w x h x d) 435 x 77.5 x 303.5 mmWeight Approximately 2.8 Kg* typical playing time for movie with 2 spoken languages and3 subtitle languagesSpecifications subject to change without prior noticeSafety Instructions, Warnings, Notes, and Service HintsEN 4 DVD 723-7432.2. Safety Instructions, Warnings,

15、 Notes, and Service Hints2.1 Safety Instructions2.1.1 General SafetySafety regulations require that during a repair: Connect the unit to the mains via an isolation transformer.Replace safety components, indicated by the symbol g19, only by components identical to the original ones. Any other compone

16、nt substitution (other than original type) may increase risk of fire or electrical shock hazard.Safety regulations require that after a repair, you must return the unit in its original condition. Pay, in particular, attention to the following points:Route the wires/cables correctly, and fix them wit

17、h the mounted cable clamps.Check the insulation of the mains lead for external damage.Check the electrical DC resistance between the mains plug and the secondary side:1. Unplug the mains cord, and connect a wire between the two pins of the mains plug.2. Set the mains switch to the on position (keep

18、the mains cord unplugged!).3. Measure the resistance value between the mains plug and the front panel, controls, and chassis bottom. 4. Repair or correct unit when the resistance measurement is less than 1 M. 5. Verify this, before you return the unit to the customer/user (ref. UL-standard no. 1492)

19、.6. Switch the unit off, and remove the wire between the two pins of the mains plug.2.1.2 Laser SafetyThis unit employs a laser. Only qualified service personnel may remove the cover, or attempt to service this device (due to possible eye injury).Laser Device UnitType : Semiconductor laser GaAlAsWav

20、elength : 650 nm (DVD): 780 nm (VCD/CD)Output Power : 20 mW(DVD+RW writing):0.8 mW(DVD reading):0.3 mW(VCD/CD reading)Beam divergence : 60 degreeFigure 2-1 Note: Use of controls or adjustments or performance of procedure other than those specified herein, may result in hazardous radiation exposure.

21、Avoid direct exposure to beam.2.2 Warnings2.2.1 GeneralAll ICs and many other semiconductors are susceptible to electrostatic discharges (ESD, g34). Careless handling during repair can reduce life drastically. Make sure that, during repair, you are at the same potential as the mass of the set by a w

22、ristband with resistance. Keep components and tools at this same potential.Available ESD protection equipment: Complete kit ESD3 (small tablemat, wristband, connection box, extension cable and earth cable) 4822 310 10671. Wristband tester 4822 344 13999.Be careful during measurements in the live vol

23、tage section. The primary side of the power supply (pos. 1005), including the heatsink, carries live mains voltage when you connect the player to the mains (even when the player is off!). It is possible to touch copper tracks and/or components in this unshielded primary area, when you service the pl

24、ayer. Service personnel must take precautions to prevent touching this area or components in this area. A lightning stroke and a stripe-marked printing on the printed wiring board, indicate the primary side of the power supply.Never replace modules, or components, while the unit is on.2.2.2 LaserThe

25、 use of optical instruments with this product, will increase eye hazard.Only qualified service personnel may remove the cover or attempt to service this device, due to possible eye injury.Repair handling should take place as much as possible with a disc loaded inside the player.Text below is placed

26、inside the unit, on the laser cover shield:Figure 2-2 2.2.3 NotesDolbyManufactered under licence from Dolby Laboratories. “Dolby”, “Pro Logic” and the double-D symbol are trademarks of Dolby Laboratories. Confidential Unpublished Works.1992-1997 Dolby Laboratories, Inc. All rights reserved.Figure 2-

27、3 TrusurroundTRUSURROUND, SRS and symbol (fig 2-4) are trademarks of SRS Labs, Inc. TRUSURROUND technology is manufactured under licence frm SRS labs, Inc.Figure 2-4 CAUTION VISIBLE AND INVISIBLE LASER RADIATION WHEN OPEN AVOID EXPOSURE TO BEAM ADVARSEL SYNLIG OG USYNLIG LASERSTRLING VED BNING UNDG

28、UDSTTELSE FOR STRLINGADVARSEL SYNLIG OG USYNLIG LASERSTRLING NR DEKSEL PNES UNNG EKSPONERING FOR STRLEN VARNING SYNLIG OCH OSYNLIG LASERSTRLNING NR DENNA DEL R PPNAD BETRAKTA EJ STRLENVARO! AVATT AESSA OLET ALTTIINA NKYVLLE JA NKYMTTMLLE LASER STEILYLLE L KATSO STEESEEN VORSICHT SICHTBARE UND UNSICH

29、TBARE LASERSTRAHLUNG WENN ABDECKUNG GEFFNET NICHT DEM STRAHL AUSSETSENDANGER VISIBLE AND INVISIBLE LASER RADIATION WHEN OPEN AVOID DIRECT EXPOSURE TO BEAM ATTENTION RAYO NNEMENT LASER VISIBLE ET INVISIBLE EN CAS DOUVERTURE EXPOSITION DANGEREUSE AU FAISCEAU!Safety Instructions, Warnings, Notes, and S

30、ervice Hints EN 5DVD 723-743 2.2.3 Service Hints2.3.1 Switched Mode Power SupplyThe power supply unit has to be replaced in case of failure. The schematic provided in the manual is only for information and no service parts will be available.2.3.2 DVD ModuleThis module can be repaired as follows:1. T

31、he VAL6013/01 is a combination of loading mechanism and DVD-mechanism. Both are not repairable units and in case of failure, it has to be replaced with a new loader VAL6013/01.Note: When replacing with a new VAL6013/01, two solder joints have to be removed after connecting the OPU flex foil to the m

32、ono board.The solder joints, which shortcircuits the laser diodes to ground, are for protection against ESD. Refer to figures 2-5 and 2-6 for location of solder joints.2. The mono board has to be repaired down to component level. Repair handling of the monoboard requires a workshop with sophisticate

33、d desoldering tools.VAL6013/01 Solder JointsFigure 2-5 VAL6013/01 Solder JointsFigure 2-6 2.3.3 ComPairFor assistance with the repair process of the monoboard an electronic fault finding guidance has been developed. This program is called ComPair.This ComPair program is available on CDROM.The versio

34、n of the CDROM for repair of the monoboard is V1.3 or higher and can be ordered with codenumber 4822 727 21637. This is an update CDROM, so when the ComPair CDROM is used for the first time, one has to install the ComPair Engine CDROM V1.2 first.The V1.2 CDROM can be ordered with code number 4822 72

35、7 21634 and has to registered after instalation. The procedure for registration is explained in the help file of the program and in the CDROM booklet.The cable to connect the monoboard with a PC can be ordered with codenumber: 3122 785 90017.All the hardware and software requirements of the systems,

36、 necessary for working with ComPair, are described on the CDROM.2.3.4 Service PositionsRefer to dismantling instructions for dismounting of the board.Figures 2-7 to 2-8 shows the service position that are recommended during repair of the boards.DVD723/0X1 modelFigure 2-7 DVD743/0X1 modelFigure 2-8 Directions for UseEN 6 DVD 723-7433.3. Directions for UseDirections for Use EN 7DVD 723-743 3.Directions for UseEN 8 DVD 723-7433.Directions for Use EN 9DVD 723-743 3.Directions for UseEN 10 DVD 723-7433.