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 1 SERVICING PRECAUTIONS NOTES REGARDING HANDLING OF THE PICK-UP 1. Notes for transport and storage 1) 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 pressur

4、e or impact. 2. Repair notes 1) 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 and impact. If it is subjected to strong pressure or impact, t

5、he result may be an operational malfunction and/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 reason the adjustment point and installation screws should absolutely never be touched. 4) Laser beams may da

6、mage 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 surface If there is dust on the lens surface, the dust should be cleaned away by using an air bush (such as

7、 used for 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 t

8、o the cotton swab. (Do not use any other liquid cleaners, because they will damage the lens.) Take care not to use too much of this alcohol on the swab, and do not allow the alcohol to get inside the pick-up. Storage in conductive bag NEVER look directly at the laser beam, and dont let contact finge

9、rs or other exposed skin. Magnet How to hold the pick-up Conductive Sheet Cotton swab Pressure Pressure Drop impact harman/kardon harman/kardon DVD31 DVD31 RadioFans.CN 2 NOTES REGARDING COMPACT DISC PLAYER REPAIRS 1. Preparations 1) Compact disc players incorporate a great many ICs as well as the p

10、ick-up (laser diode). 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 hi

11、gh-precision components. Care must be taken, therefore, to avoid repair or storage where the temperature of humidity is high, where strong magnetism is present, or where there is excessive dust. 2. Notes for repair 1) Before replacing a component part, first disconnect the power supply lead wire fro

12、m the unit 2) All equipment, 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 is because there is the possibility of damage by

13、 static electricity.) 4) To 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 prevent static electricity changes in the cl

14、othing to escape from the armband. 7) The laser beam from the pick-up should NEVER be directly facing the eyes or bare skin. Resistor (1 Mohm) Conductive Sheet Resistor (1 Mohm) Armband harman/kardon harman/kardon DVD31 DVD31 RadioFans.CN 3 ESD PRECAUTIONS Electrostatically Sensitive Devices (ESD) S

15、ome semiconductor (solid state) devices can be damaged 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 fol

16、lowing techniques should be used to help reduce the incidence of component damage caused by static electricity. 1. Immediately before handling any semiconductor component or semiconductor-equipped assembly, drain off any electrostatic charge on your body by touching a known earth ground. Alternative

17、ly, obtain and wear a commercially available discharging wrist strap device, which should be removed for potential shock reasons prior 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 al

18、uminum foil, to prevent electrostatic charge buildup or exposure 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-static can generate electrical charges s

19、ufficient to damage ESD devices. 5. Do not use freon-propelled chemicals. These can generate electrical charges sufficient to damage ESD devices. 6. Do not remove a replacement ESD device from its protective package until immediately before you are ready to install it. (Most replacement ESD devices

20、are packaged with leads electrically shorted together by conductive foam, aluminum foil or comparable conductive materials). 7. Immediately before removing the protective material from the leads of a replacement ESD device, touch the protective material to the chassis or circuit assembly into which

21、the device will by installed. CAUTION : BE SURE NO POWER IS APPLIED TO THE CHASSIS OR CIRCUIT, AND OBSERVE ALL OTHER SAFETY PRECAUTIONS. 8. Minimize bodily motions when handing unpackaged replacement ESD devices. (Otherwise harmless motion such as the brushing together of your clothes fabric or the

22、lifting of your foot from a carpeted floor can gen- erate static electricity sufficient to damage an ESD device). harman/kardon harman/kardon DVD31 DVD31 4 DVD 31 TECHNICAL SPECIFICATIONS Applicable Disc:Disc formats: 5-inch (12cm) or 3-inch (8cm) DVD-Movie, or DVD-Audio Standard conforming DVD-R, D

23、VD+R, DVD-RW, DVD+RW, VCD, CD, CD-R, MP3 or CD-RW discs Region code: DVD Movie disc with Code 1 or 0 only DVD-Layers: Single Side/Single Layer, Single Side/Dual Layer, Dual Side/Dual Layer Audio formats: Linear PCM, DVD-Audio, MPEG,Windows Media 9, Dolby Digital or DTS Audio Discs Still image format

24、: JPEG Video Signal System:NTSC Composite Video Output:1V p-p/75 ohms, sync negative polarity S-Video Output:Y/Luminance: 1V p-p/75 ohms, sync negative polarity C/Chrominance: 0.286V p-p Component Video Output:Y: 1V p-p/75 ohms, sync negative polarity Pr: 0.7V p-p/75 ohms Pb: 0.7V p-p/75 ohms Analog

25、 Audio Output:2V rms max Frequency Response:DVD (Linear PCM):2Hz 22kHz +0/0.5dB (48kHz sampling) 2Hz 44kHz +0/0.5dB (96kHz sampling) CD:2Hz 20kHz +0/0.5dB Signal/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 u

26、se only one of them. When the audio signal is to be fed to an analog receiver rather than to the TV, connect the audio out jacks to any analog audio input on your amplifier/ decoder/receiver.The DVD 31 will “downmix” Dolby Digital recordings to Pro Logic.* For more information see the IMPORTANT NOTE

27、 on next page. Connecting to a TV and Analog Receiver 240240 31 TV To power outlet (AC 120V/60Hz) To S-video input connector To analog audio input connectors (red/white) on the TV or analog receiver To video input connector (yellow) DVD 31 NOTE: While we suggest the use of S-video for higher quality

28、 pictures, you may use the standard composite video connection if your TV does not have an S-video input. Only one video connection is needed, not both. DVD 31 (120V) OM 6/25/04 11:40 AM Page 12 DVD31 harman/kardon DVD31 harman/kardon 11 SETUP AND CONNECTIONS 13 SETUP AND CONNECTIONS One of the majo

29、r advantages of the DVD format is its ability to use a variety of digital audio formats for the ultimate in sonic performance. However, in order to enjoy the benefits of digital audio, you must use a receiver or processor that has digital audio decoding capabilities and make an optical or coaxial di

30、gital audio connection between the DVD 31 and your home theater system.This simple connection is made as shown below with an optional coax or optical cable. Note that only one of these connec- tions is required, and the choice is determined by personal preferences, as well as the number of inputs av

31、ailable on your receiver or processor as compared to the number of digital audio sources it must accommodate. In order to take advantage of the high-resolution DVD-Audio output of the DVD 31, you must connect the 5.1-channel direct outputs on the DVD 31 to the matching inputs on your receiver or pro

32、ces- sor.This includes both the left/center/right/surround left/surround right outputs and the subwoofer output. This is important, as the output of DVD-Audio discs is not available through the standard optical and coaxial digital audio output jacks. When your receiver or processor does not have dig

33、ital audio capability, connect the left/right audio outputs (red/white colored jacks) to an available left/right audio input on your receiver or processor. You may also connect these outputs directly to the left/right audio inputs on a television or video display when an analog stereo or multichanne

34、l receiver is not used. Even when making a digital audio connection, we recommend that you also connect the left/right analog audio outputs of the DVD 31 to your receiver or processor.While your primary listening will be done using multichannel audio that is decoded from the digital audio input, som

35、e receivers and proces- sors also require an analog connection for use with multizone systems or recording outputs.This optional connection is shown below. Audio Connections 240240 31 TV To power outlet (AC 120V/60Hz) To analog audio input connectors on TV or receiver (red/white, optional only; see

36、NOTE at right) Front Speaker (Left/Right)Center SpeakerSurround Speakers (Left/Right)Subwoofer Dolby Digital/DTS Receiver or Processor DVD 31 IMPORTANT NOTE: Make certain that any device being connected, including the DVD 31, your receiver or processor, and your TV or video display, are turned off w

37、henever you make connections between products. NOTE: Only one digital connection is required. You may use either optical or coaxial, according to the requirements of your system. To S-video input connector To video input connector (yellow) To optical digital audio input connector To coaxial digital

38、audio input connectorTo coaxial digital audio input connector To 6-channel direct input connectors DVD 31 (120V) OM 6/25/04 11:40 AM Page 13 DVD31 harman/kardon DVD31 harman/kardon 12 14SETUP AND CONNECTIONS SETUP AND CONNECTIONS If your television, monitor, projector or video display has standard c

39、omposite and S-video connections only, connect one or the other (but not both) either to the matching video inputs on your receiver or processor, or directly to the inputs on your television or other video display. When both composite (yellow) and S-video jacks (but not component inputs) are availab

40、le on the video display, we recommend using the S-video connection for higher video quality. If your receiver or processor has video switching capability, we recommend that the composite or S-video outputs of the DVD 31 be connected to the receiver or processor, along with the output of other video

41、sources in your system, such as a VCR and cable or satellite receiver.This simplifies the operation of your system since the receiver or processor will switch multiple sources and feed the selected output to the display. If your television, monitor, projector or video display has component video inp

42、uts, we strongly recom- mend that you connect the Y/Pr/Pb (green/red/blue) video output jacks on the DVD 31 to the matching video inputs on your receiver or processor, or directly to the inputs on your television or other video display. If your receiver or processor has component video switching cap

43、ability, we recommend that the video outputs of the DVD 31 be connected to the receiver or processor, along with the out- put of other component video sources in your system, such as an HDTV tuner or cable or satel- lite receiver.This simplifies the operation of your system since the receiver or pro

44、cessor will switch multiple sources and feed the selected output to the display. If your video display is compatible with high- resolution video signals, be certain that the connections are made to the input jacks on the display marked “HD Component,” if available. If your video display is compatibl

45、e with high- resolution video signals, you may need to configure the input settings on the display for use with “480P” input signals. If you use the component video outputs with a video display that is compatible with high- resolution video signals, the DVD 31s video output should be changed from In

46、terlaced to Progressive, as shown on page 20. When the component video outputs are used, we recommend that you also connect the standard composite or S-video outputs to your receiver or processor so that standard-rate video signals are available for use with the multizone or record outputs, where ap

47、plicable. 240240 31 TV/Video Display or A/V Receiver To power outlet (AC 120V/60Hz) Y Pr Pb To composite video input connector (yellow) DVD 31 Video Display Connections IMPORTANT NOTE: Make certain that any device being connected, including the DVD 31, your receiver or processor, and your TV or vide

48、o display, are turned off whenever you make connections between products. NOTES: If an S-video or composite video connection is made either as your primary video connection or in addition to a component video connection for use in feeding a multizone system or recorder, note that you may make either

49、 type of connection, but not both. Only one type is needed. When video connections are made to an A/V receiver, surround processor or other device that switches the video signals, make the connections between that device and your video display in accordance with the instructions for that product. Depending on the capabilities of the receiver, processor or other switcher, you may need t