HarmanKardon-DVD31-cd-sm维修电路原理图.pdf

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1、 harman kardon Model DVD 31DVD 31 DVD/CD/CD-R/CD-RW/VCD MP3 Player Preliminary Service Manual - Contents - SERVICE PRECAUTIONS.2 SPECIFICATIONS.5 FRONT PANEL CONTROLS.6 INFORMATION DISPLAY.7 REMOTE CONTROL.8 REAR PANEL CONNECTIONS.10 INSTALLATION/CONNECTIONS.11 CONNECTIONS/SETUP.14 BASIC TROUBLESHOO

2、TING GUIDE.20 RESET INSTRUCTIONS.20 EXPLODED VIEW.21 EXPLODED VIEW PARTS LIST. 22 BULLETIN # HK2004-003.23 MECHANICAL PARTS LIST.25 ELECTRICAL PARTS LIST.27 PCB DRAWINGS36 SEMICONDUCTOR PINOUTS.49 BLOCK DIAGRAM.52 SYSTEM CONFIGURATION SPECS.53 SCHEMATICS.54 PACKAGE.67 harman/kardon, Inc. 250 Crosswa

3、ys Park Dr. Woodbury, New York 11797 RadioFans.CN 收音机爱 好者资料库1SERVICING PRECAUTIONSNOTES REGARDING HANDLING OF THE PICK-UP1. Notes for transport and storage1) The pick-up should always be left in its conductive bag until immediately prior to use.2) The pick-up should never be subjected to external pr

4、essure or impact.2. Repair notes1) The pick-up incorporates a strong magnet, and so should never be brought close to magnetic materials.2) The pick-up should always be handled correctly and carefully, taking care to avoid external pressure andimpact. If it is subjected to strong pressure or impact,

5、the result may be an operational malfunctionand/or damage to the printed-circuit board.3) Each and every pick-up is already individually adjusted to a high degree of precision, and for that reasonthe adjustment point and installation screws should absolutely never be touched.4) Laser beams may damag

6、e the eyes!Absolutely never permit laser beams to enter the eyes!Also NEVER switch ON the power to the laser output part (lens, etc.) of the pick-up if it is damaged.5) Cleaning the lens surfaceIf there is dust on the lens surface, the dust should be cleaned away by using an air bush (such as usedfo

7、r camera lens). The lens is held by a delicate spring. When cleaning the lens surface, therefore, a cot-ton swab should be used, taking care not to distort this.6) Never attempt to disassemble the pick-up.Spring by excess pressure. If the lens is extremely dirty, apply isopropyl alcohol to the cotto

8、n swab. (Donot use any other liquid cleaners, because they will damage the lens.) Take care not to use too much ofthis alcohol on the swab, and do not allow the alcohol to get inside the pick-up.Storage in conductive bagNEVER look directly at the laser beam, and dont let contactfingers or other expo

9、sed skin.MagnetHow to hold the pick-upConductive SheetCotton swabPressurePressureDrop impact harman/kardon harman/kardon DVD31 DVD31 2RadioFans.CN 收音机爱 好者资料库2NOTES REGARDING COMPACT DISC PLAYER REPAIRS1. Preparations1) Compact disc players incorporate a great many ICs as well as the pick-up (laser d

10、iode). These compo-nents are sensitive to, and easily affected by, static electricity. If such static electricity is high voltage,components can be damaged, and for that reason components should be handled with care.2) The pick-up is composed of many optical components and other high-precision compo

11、nents. Care mustbe taken, therefore, to avoid repair or storage where the temperature of humidity is high, where strongmagnetism is present, or where there is excessive dust.2. Notes for repair1) Before replacing a component part, first disconnect the power supply lead wire from the unit2) All equip

12、ment, measuring instruments and tools must be grounded.3) The workbench should be covered with a conductive sheet and grounded.When removing the laser pick-up from its conductive bag, do not place the pick-up on the bag. (This isbecause there is the possibility of damage by static electricity.)4) To

13、 prevent AC leakage, the metal part of the soldering iron should be grounded.5) Workers should be grounded by an armband (1M)6) Care should be taken not to permit the laser pick-up to come in contact with clothing, in order to preventstatic electricity changes in the clothing to escape from the armb

14、and.7) The laser beam from the pick-up should NEVER be directly facing the eyes or bare skin.Resistor(1 Mohm)ConductiveSheetResistor(1 Mohm)Armband harman/kardon harman/kardon DVD31 DVD31 33ESD PRECAUTIONSElectrostatically Sensitive Devices (ESD)Some semiconductor (solid state) devices can be damage

15、d easily by static electricity. Such components com-monly are called Electrostatically Sensitive Devices (ESD). Examples of typical ESD devices are integrated cir-cuits and some field-effect transistors and semiconductor chip components. The following techniques shouldbe used to help reduce the inci

16、dence of component damage caused by static electricity.1. Immediately before handling any semiconductor component or semiconductor-equipped assembly, drain offany electrostatic charge on your body by touching a known earth ground. Alternatively, obtain and wear acommercially available discharging wr

17、ist strap device, which should be removed for potential shock reasonsprior to applying power to the unit under test.2. After removing an electrical assembly equipped with ESD devices, place the assembly on a conductive sur-face such as aluminum foil, to prevent electrostatic charge buildup or exposu

18、re of the assembly.3. Use only a grounded-tip soldering iron to solder or unsolder ESD devices.4. Use only an anti-static solder removal device. Some solder removal devices not classified as anti-staticcan generate electrical charges sufficient to damage ESD devices.5. Do not use freon-propelled che

19、micals. These can generate electrical charges sufficient to damage ESDdevices.6. Do not remove a replacement ESD device from its protective package until immediately before you areready to install it. (Most replacement ESD devices are packaged with leads electrically shorted together byconductive fo

20、am, aluminum foil or comparable conductive materials).7. Immediately before removing the protective material from the leads of a replacement ESD device, touch theprotective material to the chassis or circuit assembly into which the device will by installed.CAUTION : BE SURE NO POWER IS APPLIED TO TH

21、E CHASSIS OR CIRCUIT, AND OBSERVE ALLOTHER SAFETY PRECAUTIONS.8. Minimize bodily motions when handing unpackaged replacement ESD devices. (Otherwise harmless motionsuch as the brushing together of your clothes fabric or the lifting of your foot from a carpeted floor can gen-erate static electricity

22、sufficient to damage an ESD device). harman/kardon harman/kardon DVD31 DVD31 4DVD 31 TECHNICAL SPECIFICATIONSApplicable Disc:Disc formats: 5-inch (12cm) or 3-inch (8cm) DVD-Movie, or DVD-Audio Standard conforming DVD-R, DVD+R, DVD-RW, DVD+RW,VCD, CD, CD-R, MP3 or CD-RW discsRegion code: DVD Movie di

23、sc with Code 1 or 0 onlyDVD-Layers: Single Side/Single Layer, Single Side/Dual Layer, Dual Side/Dual LayerAudio formats: Linear PCM, DVD-Audio, MPEG,Windows Media 9, Dolby Digital or DTS Audio DiscsStill image format: JPEGVideo Signal System:NTSCComposite Video Output:1V p-p/75 ohms, sync negative p

24、olarityS-Video Output:Y/Luminance: 1V p-p/75 ohms, sync negative polarityC/Chrominance: 0.286V p-pComponent Video Output:Y: 1V p-p/75 ohms, sync negative polarityPr: 0.7V p-p/75 ohmsPb: 0.7V p-p/75 ohmsAnalog Audio Output:2V rms maxFrequency Response:DVD (Linear PCM):2Hz 22kHz +0/0.5dB (48kHz sampli

25、ng)2Hz 44kHz +0/0.5dB (96kHz sampling)CD:2Hz 20kHz +0/0.5dBSignal/Noise Ratio (SNR):105dB (A-weighted)Dynamic Range:DVD: 100dB (18-bit)/105dB (20-bit)CD/DVD: 96dB (16-bit)THD/1kHz:DVD/CD: 0.0025%Wow & Flutter:Below Measurable LimitsAC Power:100240VAC/5060HzPower Consumption:2 Watts (On/Standby)/20 W

26、atts (Max)Dimensions (W x H x D):17-3/10 x 1-15/16 x 12 (440mm x 49mm x 330mm)Weight:7.3 lb (3.3kg)Depth measurement includes knobs and connectors.Height measurement includes feet and chassis.All specifications subject to change without notice.Harman Kardon and Power for the Digital Revolution are r

27、egistered trademarks of Harman International Industries, Incorporated.*Dolby is a registered trademark of Dolby Laboratories Licensing Corporation. Manufactured under license from Dolby Laboratories.“Dolby” ,“Pro Logic” and the double-D symbol are registered trademarks of Dolby Laboratories. Confide

28、ntial Unpublished Works. 1992-1997 Dolby Laboratories, Inc.All rights reserved.“DTS” is a registered trademark of Digital Theater Systems, Inc.Microsoft and Windows Media are registered trademarks of Microsoft Corporation in the United States and/or other countries.This product incorporates copyrigh

29、t protection technology that is protected by method claims of certain U.S. patents and other intellectual property rights owned byMacrovision Corporation and other rights owners. Use of this copyright protection technology must be authorized by Macrovision Corporation and is intended for home and ot

30、her limited viewing uses only unless otherwise authorized by Macrovision Corporation. Reverse engineering or disassembly is prohibited.250 Crossways Park Drive,Woodbury, New York 2004 Harman International Industries, Incorporated Part No. 312-AB310000-0010 6/04DVD 31 (120V) OM 6/25/04 11:40 AM Page

31、32DVD31 harman/kardon DVD31 harman/kardon 5FRONT-PANEL CONTROLS 7FRONT-PANEL CONTROLS1 Power Indicator: This indicator lights amber whenthe unit is connected to an AC power source, but is notturned on.When the unit is on, the indicator lights blue.1Power On/Off (Standby): Press the button onceto tur

32、n the DVD 31 on. Press it again to put the unit in the Standby mode.2Play: Press to initiate playback or to resume playback after the Pause Button4Chas beenpressed.3Pause: Press this button to momentarily pauseplayback.To resume playback, press the button again.If a DVD is playing, action will freez

33、e and a still picturewill be displayed when the button is pressed.4Stop: Press this button once to place the disc inthe Resume mode, which means that playback willstop, but as long as the tray is not opened or the discchanged, DVD playback will continue from the samepoint on the disc when the Play B

34、utton2Gispressed again. Resume will also work if the unit wasturned off.To stop a disc and have play start from thebeginning, press the button twice.6 Skip/Search Reverse: Press this button once toreturn to the start of the current chapter for a DVD ortrack for a CD. Subsequent individual presses wi

35、ll skipbackwards through the available chapters or tracks.Press and hold the button to play the disc in the fastreverse mode at the speed indicated in the on-screendisplay and by the Playback Mode Indicators K.7 Skip/Search Forward: Press this button once tomove to the start of the next chapter for

36、a DVD ortrack for a CD. Subsequent presses will skip forwardthrough the available chapters or tracks. Press andhold the button to play the disc in the Fast Play modeat the speed indicated in the on-screen display and bythe Playback Mode Indicators K.8 Remote Sensor: The sensor that receives com-mand

37、s from the remote control is behind the frontpanel in this area.To ensure proper operation of theplayer with the remote, it is important that this area notbe covered. In the event that the player is enclosed ina cabinet or if the remote sensor is covered, you mayextend the remote sensor by connectin

38、g an optional,external remote sensor to the Remote Control Input on the rear panel (see page 11).When optional,external IR “blasters” are used for system control, theyshould be positioned so that they point at this area.8Display Dimmer: Press this button to reduce thebrightness of the Information Di

39、splay by 50% or to turnthe display off completely in the following order: FULLBRIGHTNESS HALF BRIGHTNESS OFF FULL BRIGHTNESS.) Disc Drawer: This drawer is used to hold thediscs played in the unit. Be certain to seat all discscarefully within the recess in the drawer. Do not pressdown on the drawer w

40、hen it is open, to avoid damageto the player.!Open/Close: Press this button to open or closethe disc tray. Information Display: The Information Displayprovides status information on the player and the discbeing played through a series of specific indicators and messages that appear in the dot matrix

41、 display.See page 8 for more information on the display.?Power Indicator 1Power On/Off (Standby)2Play3Pause4Stop5Skip/Search Reverse 6Skip/Search Forward7Remote Sensor8Display Dimmer9Disc Drawer!Open/Close Information DisplayNOTE: To make it easier to follow the instructions that refer to the contro

42、ls and connectors in this illustration, a larger copy may be downloaded from the Product Support section for this product at .DVD 31 (120V) OM 6/25/04 11:40 AM Page 7DVD31 harman/kardon DVD31 harman/kardon 68FRONT-PANEL INFORMATION DISPLAYFRONT-PANEL INFORMATION DISPLAYA Playback Mode IndicatorsB Di

43、sc Type IndicatorsC Program IndicatorD Random IndicatorE VCD Playback Control IndicatorF Repeat IndicatorsG V-OFF IndicatorH A-B Repeat IndicatorI Angle IndicatorJ Progressive Scan IndicatorK Test Signal IndicatorL Parental Lock IndicatorM Time IndicatorsN Chapter/Track IndicatorsO Group/Title Indic

44、atorsA Playback-Mode Indicators: These indicatorslight to show the current playback mode:Lights when a disc is playing in the normal mode. When the DVD 31 is in the Fast Search playmode, two or three of these indicators will light toshow that the unit is in a Fast Play mode, dependingon the speed. L

45、ights when the disc is paused.Lights when the disc is in the Fast SearchReverse mode.B Disc Type Indicators: These indicators will lightto show the type of disc or program material beingplayed.C Program Indicator: This indicator lights when theprogramming functions are in use.D Random Indicator: Thi

46、s indicator lights when theunit is in the Random Play mode.E VCD Playback Control Indicator: This indicatorlights when the Playback Control function is turned onwith VCDs.F Repeat Indicators: These indicators light whenany of the Repeat functions are in use.G V-OFF Indicator: This indicator lights i

47、n red whenthe units video output has been turned off by pressingthe V-OFF button on the remote control.H A-B Repeat Indicator: This indicator lights whena specific passage for repeat playback has beenselected.I Angle Indicator: This indicator blinks when alternative viewing angles are available on t

48、he DVD currently playing.J Progressive Scan Indicator: This indicator lightswhen the unit sends out a progressive scan signal.K Test Signal Indicator: This indicator lights whenthe test pattern signal is in use.L Parental Lock Indicator: This indicator lightswhen the parental-lock system is engaged

49、in order toprevent anyone from changing the rating level withouta code.M Time Indicators: These positions in the indicatorwill show the running time of a DVD in play.When aCD is playing, these indicators will show the currenttrack time, time remaining in the current track, or thetotal remaining time

50、 on the disc.NOTE: The indicators MNO will also display text messages about the DVDs status, includingReading when a disc is loading, Standbywhen the unit is turned off, and Disc Errorwhen a disc not compatible with the DVD is put into play.N Chapter/Track Number Indicators: When aDVD disc is playin