Harman-Kardon-DVD-28-230-Service-Manual(1) 电路图 维修手册.pdf

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1、 harman/kardon Service Manual DVD 26/230 DVD 28/230 DVD players (technically identical to DVD 29 and DVD 37) CONTENTS ESD PRECAUTIONS 2 BASIC SPECIFICATIONS 19 SERVICING PRECAUTIONS 3 PACKAGE LIST AND PARTS 24 OWNERS MANUAL FRONT PAGE 5 DISASSEMBLY 25 OM TABLE OF CONTENTS 6 EXPLODED VIEW 26 REMOTE C

2、ONTROL FUNCTIONS 7 ELECTRICAL PARTS LIST 27 FEATURES 11 SEMICONDUCTOR PINOUTS 46 FRONT PANEL CONTROLS 12 PCB DRAWINGS 67 FRONT PANEL DISPLAY 13 BLOCK DIAGRAM 71 REAR PANEL CONNECTIONS 14 WIRING DIAGRAM 72 SETUP AND CONNECTIONS 15 TROUBLESHOOTING GUIDE 18 SCHEMATIC DIAGRAMS 73-76 Released EU2010 Harm

3、an Consumer Group, Inc. Rev 0, 09/2010 8500 Balboa Boulevard. Northridge, California 91329 harman/kardonDVD 26 and 28/230 Service Manual Page 1 of 76 RadioFans.CN 收音机爱 好者资料库 3 ESD PRECAUTIONS Electrostatically Sensitive Devices (ESD) Some semiconductor (solid state) devices can be damaged easily by

4、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 incidence o

5、f 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 wrist

6、 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 expos

7、ure 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-propell

8、ed 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 con

9、ductive 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 IS

10、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 s

11、tatic electricity sufficient to damage an ESD device). harman/kardonDVD 26 and 28/230 Service Manual Page 2 of 76 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 unti

12、l immediately prior to use. 2) The pick-up should never be subjected to external 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 t

13、o avoid external pressure and impact. If it is subjected to strong pressure or 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

14、 point and installation screws should absolutely never be touched. 4) Laser beams 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

15、 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 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

16、-up. Spring by excess pressure. If the lens is extremely dirty, apply isopropyl 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. St

17、orage in conductive bag NEVER look directly at the laser beam, and dont let contact fingers or other exposed skin. Magnet How to hold the pick-up Conductive Sheet Cotton swab Pressure Pressure Drop impact harman/kardonDVD 26 and 28/230 Service Manual Page 3 of 76 RadioFans.CN 收音机爱 好者资料库 2 NOTES REGA

18、RDING 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 sensitive to, and easily affected by, static electricity. If such static electricity is high voltage, components can be damaged, and for

19、 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, therefore, to avoid repair or storage where the temperature of humidity is high, where strong magnetism is present, or where there is ex

20、cessive 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 and tools must be grounded. 3) The workbench should be covered with a conductive sheet and grounded. When removing the laser pick-

21、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, 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

22、 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 beam from the pick-up should NEVER be directly facing the eyes or bare skin. Resistor (1 Mohm) Conductive Sheet Resistor (1 Mohm) Arm

23、band harman/kardonDVD 26 and 28/230 Service Manual Page 4 of 76 ENGLISH AVR/DVD System AVR Audio/Video Receiver DVD Digital Versatile Disc Player OwneRs MAnuAl 0123CSK - HK AVR-DVD(NoName) System OM RELEASE02.indd 127/03/09 08:33:08 harman/kardonDVD 26 and 28/230 Service Manual Page 5 of 76 This own

24、ers manual covers any combination of AVR 139, AVR 141, DVD 26 and DVD 28. 2 EN55013(2001) the display will always return to full brightness when the AVR is turned on. In addition,both the Power Indicator 2 and the blue accent lighting inside the volume control will always remain at full brightness r

25、egardless of the setting. This is to remind you that the AVR is still turned on. M Transport Buttons: These buttons operate the DVD player. N Skip Up/Down Buttons (DVD): (DWN): Press to go to beginning of current track. Press again quickly to go to beginning of previous track. After pressing the PAU

26、SE button, each press of this button will move the image in reverse frame by frame. (UP): Press to go to beginning of next track. After pressing the PAUSE button, each press of this button will move the image forwards frame by frame. O Night Mode: Press this button to activate the Night mode. This m

27、ode is available only with Dolby Digital encoded digital sources, and it preserves dialog (center channel) intelligibilty at low volume levels (see page 16 for more information). P DTS Digital Mode Selector: When a DTs source is in use the AVR will select the appropriate mode automatically and no ot

28、her mode will be available. Pressing this button will display the mode currently selected by the AVRs decoder, depending on the surround material played and the speaker setting. Q Dolby Mode Selector: This button is used to select one of the available Dolby surround processing modes. Each press of t

29、his button will select one of the Dolby Pro logic II modes, Dolby 3 stereo or Dolby Digital. Note that the Dolby Digital mode is only available with a digital input selected and the other modes only as long as a Dolby Digital source is not playing. R Repeat (DVD): Each press of this button changes t

30、he playback mode to repeat a chapter or track or the entire disc. A repeat icon will appear in the upper right corner of the screen indicating the current repeat mode. If the Player Information screen is active, the changes will be displayed on screen. S Random (DVD): Press for RANDoM playback in ra

31、ndom order. T Tone Mode/Progressive Scan/Interlaced Button: Pressing this button enables or disables the bass and Treble tone controls. When the button is pressed so that the words TONE IN appear in the Main Information Display F, the settings of the Bass and Treble controls will affect the output s

32、ignals. When the button is pressed so that the words TONE OUT appear in the Main Information Display F, the output signal will be “flat,” without any bass or treble alteration. for DVD: Press this button to change the resolution of the Component Video output between standard definition and progressi

33、ve definition (PAl interlaced and PAl progressive; NTsC interlaced and NTsC progressive). The new setting will become effective after quitting the setup menu. U Tuning Up/Down: When the tuner is in use, these buttons will tune up or down through the selected frequency band. If the Tuner Mode button

34、W has been pressed or the Band button 8 on the front panel was held pressed so that aUTO appears in the Main Information Display F, pressing either of the buttons will cause the tuner to seek the next station with acceptable signal strength for quality reception. When the maNUal appears in the Main

35、Information Display F, pressing these buttons will tune stations in single-step increments. (see page 22 for more information). V Direct Button: Press this button when the tuner is in use to start the sequence for direct entry of a stations frequency. After pressing the button simply press the prope

36、r Numeric Keys X to select a station (see page 22 for more information on the tuner). W Tuner Mode/Zoom: Press this button when the tuner is in use to select between automatic tuning and manual tuning. When the button is pressed so maNUal appears in the Main Information Display F, pressing the Tunin

37、g buttons U7 will move the frequency up or down in single-step increments. When the fM band is in use and aUTO appears in the Main Information Display F, pressing this button will change to monaural reception making even week stations audible. (see page 22 for more information.) When a DVD or VCD is

38、 playing, press this button to zoom the picture so that it is enlarged. There are 4 steps to the zoom function, each progressively larger. Press through each of the zoom stages to return to a normal picture. X Numeric Keys: These buttons serve as a ten- button numeric keypad to enter tuner preset po

39、sitions. for DVD play you may enter track numbers directly, followed by oK to go to the track. Y Digital Select/Audio Mode: Press this button to assign one of the digital inputs 4G9L to a source. (see page 12 for more information on using digital inputs.) Audio Mode: When operating the DVD, press th

40、is button to switch between Audio Modes. Z Navigation Buttons: These are multi-purpose buttons. They will be used most frequently to select a surround mode. These buttons are also used to increase or decrease output levels when configuring the unit, to select speaker configuration or to select the d

41、igital inputs. a Channel Select /Disc Menu Button: This button is used to start the process of setting the AVRs output levels with an external source. once this button is pressed, use the KL buttons Z to select the channel being adjusted, then press the OK button A, followed by the KL buttons again,

42、 to change the level setting. (see page 21 for more information.) DVD Disc Menu: Displays the actual DVD Disc Menu on the TV screen in play mode. When playing discs with JPEG images, pressing this button will access the thumbnails. b V.OFF/Test Button: Press to turn off video output for improved per

43、formance from audio-only discs. Press again to restore video output. Tone: Press this button to begin the sequence used to calibrate the AVRs output levels. (see page 16 for more information on calibrating the AVR). 0123CSK - HK AVR-DVD(NoName) System OM RELEASE02.indd 627/03/09 08:34:49 harman/kard

44、onDVD 26 and 28/230 Service Manual Page 9 of 76 7 ENGLISH Remote Control Functions, common for AVR and DVD REMoTE CoNTRol fUNCTIoNs c Surround Mode Selector/Program Down/ Subtitle Button: Press this button to begin the process of changing the surround mode. After the button has been pressed, use the

45、 KL buttons Z to select the desired surround mode. (see page 18 for more information). When a DVD is playing, press to select a subtitle language or to turn subtitles off. Note: Due to the variations in how DVD discs are authored, the subtitle languages selected with the subtitle button may not accu

46、rately reflect the actual languages available on the disc. It is recommended that subtitles be selected using the discs menu. d Sleep/Program Up/Audio Select Button: Press this button to place the unit in the sleep mode. After the time shown in the display, the AVR will automatically go into the sta

47、ndby mode. Each press of the button changes the time until turn-off in the following order: Hold the button pressed for two seconds to turn off the sleep mode setting. Note that this button is also used to change channels on your TV, VCR and sAT receiver when selected. DVD: Press to access various a

48、udio languages on a DVD (If the DVD contains multiple audio streams). e Title: When a disc is playing, press to make the player go back to the first section of the disc. If you are playing a DVD-Audio disc that contains other formats the DVD is capable of playing, such as linear PCM or Dolby Digital

49、 5.1, pressing this button may enable you to switch playback from one audio format to another. f AM/FM Tuner Select: Press this button to select the AVRs tuner as the listening choice. Pressing this button when the tuner is in use will select between the AM and fM bands. g AVR Selector: Pressing this button will switch the remote so that it will operate the AVRs functions. If t