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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
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