HarmanKardon-DVD38-cd-sm维修电路原理图.pdf

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1、 harman kardon Model DVD 38DVD 38 DVD/CD/CD-R/CD-RW/VCD MP3 Player Service Manual - Contents - SERVICE PRECAUTIONS.2 BASIC SPECIFICATIONS.5 DETAILED SPECIFICATIONS.6 PACKAGING.10 FRONT PANEL CONTROLS.11 INFORMATION DISPLAY.13 REAR PANEL CONNECTIONS.14 REMOTE CONTROL.16 CONNECTIONS/SETUP.19 OPERATION

2、.25 BASIC TROUBLESHOOTING GUIDE38 EXPLODED VIEW (120v).40 BLOCK DIAGRAM.41 ELECTRICAL PARTS LIST (120v) .42 PCB DRAWINGS.57 SEMICONDUCTOR PINOUTS64 SCHEMATICS.140 WIRING DIAGRAM.144 harman/kardon, Inc. 250 Crossways Park Dr. Released 2007 Woodbury, New York 11797 Rev0 8/2007 Discontinued XXXX RadioF

3、ans.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 pressure or impact. 2. Repair notes 1) The pick-up

4、 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, the result may be an operational malfunction

5、 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 damage the eyes! Absolutely never permit lase

6、r 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 used for camera lens). The lens is held by

7、 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 cotton swab. (Do not use any other li

8、quid 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 fingers or other exposed skin. Magnet How to hol

9、d the pick-up Conductive Sheet Cotton swab Pressure Pressure Drop impact DVD38 harman/kardonharman/kardon RadioFans.CN 2 NOTES REGARDING COMPACT DISC PLAYER REPAIRS 1. Preparations 1) Compact disc players incorporate a great many ICs as well as the pick-up (laser diode). These compo- nents are sensi

10、tive 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 components. Care must be taken, there

11、fore, 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 from the unit 2) All equipment, measuring instruments

12、 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 static electricity.) 4) To prevent AC leakage, th

13、e 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 clothing to escape from the armband. 7) The laser be

14、am from the pick-up should NEVER be directly facing the eyes or bare skin. Resistor (1 Mohm) Conductive Sheet Resistor (1 Mohm) Armband DVD38 harman/kardonharman/kardon RadioFans.CN 3 ESD PRECAUTIONS Electrostatically Sensitive Devices (ESD) Some semiconductor (solid state) devices can be damaged ea

15、sily 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 should be used to help reduce the incid

16、ence 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. Alternatively, obtain and wear a commercially available discharging

17、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 aluminum foil, to prevent electrostatic charge buildup or e

18、xposure 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 sufficient to damage ESD devices. 5. Do not use freon-prop

19、elled 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 are packaged with leads electrically shorted together by

20、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 the device will by installed. CAUTION : BE SURE NO POWER

21、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 lifting of your foot from a carpeted floor can gen- erate

22、 static electricity sufficient to damage an ESD device). DVD38 harman/kardonharman/kardon 4 47 DVD 38 TECHNICAL SPECIFICATIONS Please register your product on our Web site at . Note:Youll need your serial number.At the same time, you can choose to be notified about our new products and/or special pr

23、omotions. Applicable Disc: Disc formats:5-inch (12cm) or 3-inch (8cm) DVD- Video, DVD-Audio, standard-conforming DVD-R, DVD+R, DVD-RW, DVD+RW,VCD, CD, CD-R, CD-RW or MP3 discs Region code:DVD video disc with Code 1 or 0 only DVD layers:Single side/single layer, single side/dual layer, dual side/dual

24、 layer Audio formats:DVD Audio MLP lossless, Linear PCM, MPEG,Windows Media9, DolbyDigital or DTSaudio discs Still-image format:JPEG Video Signal System:NTSC HDMIOutput:Video: 480p, 720p, 1080i HDMI Version 1.0-compliant HDCP Version 1.1-compliant Composite Video Output:1V p-p/75 ohms, sync negative

25、 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 Audio Output:2V RMS (1kHz, 0dB) The DVD 38 is Simplay HD-verified for compatibility

26、via the HDMI connection with other Simplay HD-verified products. Frequency Response: DVD (linear PCM):2Hz 22kHz +0/0.5dB (48kHz sampling) 2Hz 44kHz +0/1.5dB (96kHz sampling) 2Hz 88kHz +0/0.5dB (192kHz sampling) CD:2Hz 20kHz +0/0.5dB Signal/Noise Ratio (SNR):105dB (A-weighted) Dynamic Range: DVD:100d

27、B (18-bit)/105dB (20-bit) CD/DVD:96dB (16-bit) THD/1kHz:DVD/CD: 0.0025% Wow to fast-search forward or reverse; and to play, pause or stop the disc. After pressing the Pause button, the Skip buttons may be used to step frame-by-frame through a video presentation, and the Fast-Search buttons may be us

28、ed for slow play. Angle:When a DVD encoded with multiple camera angles is playing and when the Angle Icon appears to indicate that the multiple-angle passage has been reached, press this button to cycle through the various available angles. This button is also used to rotate still images. Each press

29、 rotates the image clockwise 90 degrees. Zoom:When viewing a DVD,VCD or JPEG still image, press this button repeatedly to enlarge the on-screen image by 2x, 3x, 4x or 5x (2x or 3x only for VCDs) before returning to the original size.While enlarged, use the Navigation buttons to explore the image. /N

30、avigation and Enter Buttons:These buttons are used together to make selections within the on-screen menu system. Backlight:Press this button to turn on the backlight to make it easier to see the buttons in a darkened room.The backlight will remain on for a few seconds after your last button press be

31、fore going out, or you may turn off the backlight by pressing this button again. Video Off:Some people prefer to turn off the video display when listening to audio-only discs. Pressing this button deactivates the video circuitry, avoiding any possible interference with the audio. Moreover, plasma an

32、d CRT video displays are subject to “burn-in” when a still image, such as a menu, remains on-screen for more than a short time. Although the DVD 38 features a screen saver that appears automatically after a brief period of inactivity, we strongly recommend that plasma and CRT owners use the Video Of

33、f function liberally. Press the button a second time to reactivate the video displays. DVD 38 OM(color).qxd 2/7/07 3:56 PM Page 13 DVD38 harman/kardonharman/kardon 16 Power On IR Transmitter Lens Power Off Subtitle Title Numeric Keys Status Next Step/Skip Search/Slow Forward Transport Controls Zoom

34、Scan Type HD Mode Enter Disc Menu Dimmer Stop Open/Close Audio Clear Playlist Repeat A-B Repeat Random Info Audio Mode Previous Step/Skip Search/Slow Reverse Angle Backlight System Setup Play Video Off Pause / Navigation/ NOTE: To make it easier to follow the instruc- tions throughout the manual tha

35、t refer to this illustration, a copy of this page may be down- loaded from the Product Support section at . REMOTE CONTROL FUNCTIONS DVD 38 OM(color).qxd 2/7/07 3:56 PM Page 14 DVD38 harman/kardonharman/kardon 17 15 REMOTE CONTROL FUNCTIONS Dimmer:Some people find the front-panel displays distractin

36、g, especially while watching a movie in a darkened room. Each press of this button cycles through the Full Brightness, Half Brightness and Off settings.The Power Indicator will always remain lit to remind you that the DVD 38 is turned on. NOTE: Although you may enter commands and operate the DVD 38

37、normally even with the front-panel display fully dimmed, the display will not wake when a command is entered. To view the display messages, press the Dimmer Button to change the brightness setting. Scan Type:Each press of this button toggles between the Progressive- and Interlaced Scan settings of t

38、he Component Video Outputs. It has no effect on the Composite, S-Video or HDMI Outputs.The button also has no effect while the SYSTEM SETUP menu is on-screen. Press the Clear or Setup Button to clear the on-screen displays. Use this button when your video display is not capable of handling progressi

39、ve-scan component video signals, and you have inadvertently selected the progressive scan setting in the VIDEO SETUP menu. Audio Mode:This button adjusts the Bass Management setting, which is also found in the AUDIO SETUP menu. Stop playback of the current disc in order to use this selector. There a

40、re three available settings: Bypass (the default), On and Stereo. The first press displays the current setting, and each additional press cycles through the three settings. Bypass: The analog audio information is passed through the Analog Audio Outputs as is, without applying any bass management adj

41、ustments. This mode is used with receivers and processors that are capable of applying bass management settings (speaker size, output levels and delay times) to their 6-channel analog inputs. On: This setting is used with receivers and processors that pass the audio signals from their 6-channel anal

42、og inputs directly to the outputs without applying any bass management settings.With Bass Management on, use the AUDIO ADJUSTMENTS submenu to set the DVD 38s bass management settings. Stereo: This mode is used when a 2-channel downmix of a multichannel audio signal is desired. For example, if you ar

43、e playing a DVD-Audio disc, in which case the multichannel presentation is only available through the Analog Audio Outputs, and you would like to distribute the program to a multiroom system, select the Stereo mode. NOTE: The 2-channel downmix (Stereo mode) and the 5.1- channel presentation of multi

44、channel audio discs (Bypass or Bass Management On modes) are not available simultaneously. With Bass Management on, only the front left and right channel information will be available at both the 2-channel and 6-channel left and right Analog Audio Outputs. No surround or center channel information w

45、ill be present in the signal output at the 2-channel Analog Audio Outputs. In Stereo mode, the down- mixed 2-channel signal will be available at both the 2-channel and 6-channel left and right Analog Audio Outputs, while none of the remaining 6-channel outputs will have any information. Use the Audi

46、o Mode Selector to conveniently select from the three available settings without having to enter the on-screen menu system. HD Mode:Each time the DVD 38 is turned on while connected via HDMI to a video display or other device, the DVD 38 and the other device exchange information about the other devi

47、ces video resolution capabilities.The DVD 38 sets the resolution of the HDMI Output to match the video display. If the original program materials were recorded at a much lower resolution, you may wish to change the video output resolution to improve the picture quality. Press this button to select f

48、rom the resolution settings available with your display.You will not be able to select a resolution greater than your displays capabilities. This button performs the same function as the HDMI Settings line in the VIDEO SETUP menu.The HDMI Mode setting will not be displayed on the front panel, which

49、indicates the resolution of the source discs video signal.The HDMI Mode setting may be viewed by accessing the VIDEO SETUP menu as described in the Initial Setup section. DVD 38 OM(color).qxd 2/7/07 3:57 PM Page 15 DVD38 harman/kardonharman/kardon 18 17 CONNECTIONS There are different types of audio and video connections used to connect the DVD 38 to your receive