HarmanKardon-DVD28_230-cd-sm维修电路原理图.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 ManualPage 1 of 76RadioFans.CN 收音机爱 好者资料库3ESD PRECAUTIONSElectrostatically Sensitive Devices (ESD)Some semiconductor (solid state) devices can be damaged easily by static
4、 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 incidence of compone
5、nt 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 wrist strap devic
6、e, 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 exposure of the asse
7、mbly .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 chemicals. These
8、 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 foam, aluminum
9、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 THE CHASSIS OR
10、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 sufficient t
11、o damage an ESD device). harman/kardonDVD 26 and 28/230 Service ManualPage 2 of 76RadioFans.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 pic
12、k-up should never be subjected to external pressure 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 i
13、t is subjected to strong pressure or impact, 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 absolut
14、ely 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 surfaceIf there is dust on the lens surface, the dust should be clea
15、ned away by using an air bush (such as usedfor 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 extreme
16、ly dirty, apply isopropyl alcohol to the cotton 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 b
17、eam, and dont let contactfingers or other exposed skin.MagnetHow to hold the pick-upConductive SheetCotton swabPressurePressureDrop impact harman/kardonDVD 26 and 28/230 Service ManualPage 3 of 762NOTES REGARDING COMPACT DISC PLAYER REPAIRS1. Preparations1) Compact disc players incorporate a great m
18、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 co
19、mponents and other high-precision components. 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 sup
20、ply lead wire from the unit2) 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 isbecause there is the possibility
21、 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 preventstatic electricity changes
22、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)ConductiveSheetResistor(1 Mohm)Armband harman/kardonDVD 26 and 28/230 Service ManualPage 4 of 76ENGLISHAVR/DVD SystemAVR Audio/Video Receiver DVD Digita
23、l Versatile Disc PlayerOwneRs MAnuAl0123CSK - HK AVR-DVD(NoName) System OM RELEASE02.indd 127/03/09 08:33:08harman/kardonDVD 26 and 28/230 Service ManualPage 5 of 76This owners manual covers any combination of AVR 139, AVR 141, DVD 26 and DVD 28.2EN55013(2001) & + A2(2006)EN55020(2002) & + A2(2005)E
24、N60065:2002EN61000-3-2(2000)+A2(2005)EN61000-3-3 (1995)+A1(2001)+A2(2005)EN61000-4-2(1995) & + A1(1998) & + A2(2001)EN61000-4-3(2002) & + A1(2002)EN61000-4-4(2004) Jurjen Amsterdam Harman Consumer Group Inc. 03/09TAblE of CoNTENTsTable of Contents 3 safety Information 3 Unpacking 4 Remote Control fu
25、nctions AVR 8 front Panel Controls 10 Rear Panel Connections 12 Installation and Connections 12 Audio Equipment Connections 12 Video Equipment Connections 13 HDMI Connections 14 system Configuration 14 first Turn on 14 settings to be Made With Each Input Used 14 Input setup 14 speaker setup 15 surro
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