Harman-Kardon-DVD-31-Service-Manual 电路图 维修手册.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 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 exter

4、nal pressure 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 o

5、r impact, the 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 b

6、eams may damage 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 bu

7、sh (such as 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 isopropy

8、l alcohol to 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 co

9、ntact fingers 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 2 RadioFans.CN 收音机爱 好者资料库 2 NOTES REGARDING COMPACT DISC PLAYER REPAIRS 1. Preparations 1) Compact disc players incorporate a great m

10、any ICs as well as the pick-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

11、 components and other high-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 po

12、wer supply lead wire from 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

13、possibility of damage by 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 elect

14、ricity changes in the clothing 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 3 RadioFans.CN 收音机爱 好者资料库 3 ESD PRECAUTIONS Electr

15、ostatically Sensitive Devices (ESD) Some 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 s

16、emiconductor chip components. The following 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 touch

17、ing a known earth ground. Alternatively, 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

18、 on a conductive sur- face such as aluminum 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-sta

19、tic can generate electrical charges sufficient 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 insta

20、ll it. (Most replacement ESD devices 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 ch

21、assis or circuit assembly into which 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 to

22、gether of your clothes fabric or the 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 D

23、VD-Audio Standard conforming DVD-R, DVD+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

24、or DTS Audio Discs Still image format: 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-

25、p/75 ohms Pb: 0.7V p-p/75 ohms Analog 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 (1

26、6-bit) THD/1kHz:DVD/CD: 0.0025% Wow use 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 mo

27、re information see the IMPORTANT NOTE 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

28、the use of S-video for higher quality 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

29、SETUP AND CONNECTIONS One of the major 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 capabilit

30、ies and make an optical or coaxial digital 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 preference

31、s, as well as the number of inputs available 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 ma

32、tching inputs on your receiver or proces- 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 re

33、ceiver or processor does not have digital 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

34、 when an analog stereo or multichannel 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 deco

35、ded from the digital audio input, some 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 rec

36、eiver (red/white, optional only; see 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

37、TV or video display, are turned off whenever 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 audi

38、o input connector To coaxial digital 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, proj

39、ector or video display has standard composite 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 (

40、but not component inputs) are available 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,

41、along with the output of other video 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

42、video display has component video inputs, 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 proces

43、sor has component video switching capability, 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

44、your system since the receiver or processor 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 availabl

45、e. If your video display is compatible 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 v

46、ideo output should be changed from Interlaced 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

47、multizone or record outputs, where applicable. 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 recei

48、ver or processor, and your TV or video 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 re

49、corder, note that you may make either 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, proces