HarmanKardon-AVR220-avr-sm维修电路原理图.pdf
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1、 harman/kardon AVR220 AVR220 A/V DOLBY DIGITAL RECEIVER SERVICE MANUAL CONTENTS ESD WARNING.2 LEAKAGE TESTING.3 BASIC SPECIFICATIONS.4 FRONT PANEL CONTROLS.5 FRONT PANEL DISPLAY.7 REAR PANEL CONNECTIONS.9 REMOTE CONTROL FUNCTIONS.11 TROUBLESHOOTING GUIDE.14 PROCESSOR RESET.14 BULLETIN HK2003-07.15 T
2、ECH TIP HKTT2003-01.17 TECH TIP HKTT2004-03.18 EXPLODED VIEW.22 EXPLODED VIEW PARTS LIST.23 BLOCK DIAGRAM.24 ELECTRICAL PARTS LIST.25 PCB DRAWINGS.58 SEMICONDUCTOR PINOUTS61 SCHEMATICS.104 PACKING.122 harman/kardon, Inc. 250 Crossways Park Dr. Woodbury, New York 11797 Rev3 6/2005 www.freeservicemanu
3、als.infoIts Freewww.freeservicemanuals.infoRadioFans.CN 收音机爱 好者资料库Eachprecautioninthismanualshouldbefollowedduringservicing.Components identified with the IEC symbolin the parts list are special significance to safety. When replacing a component identified with, use only the replacement parts design
4、ated, or parts with the same ratings or resistance, wattage, or voltage that are designated in theparts list in this manual. Leakage-current or resistance measurements must be made to determine that exposed parts are acceptablyinsulated from the supply circuit before retuming the product to the cust
5、omer.Some semiconductor (solid state) devices can be damaged easily by static electricity. Such components commonly are calledElectrostatically Sensitive (ES) Devices. Examples of typical ES devices are integrated circuits and some field effect transistors andsemiconductor chip components.The follow
6、ing 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 onyour body by touching a known earth ground. Alternatively, o
7、btain 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 ES devices, place the assembly on a conductive surface such as aluminum foi
8、l, toprevent electrostatic charge build-up or exposure of the assembly.3. Use only a grounded-tip soldering iron to solder or unsolder ES devices.4. Use only an anti-static solder removal device. Some solder removal devices not classified as anti-static can generate electrical chargessufficient to d
9、amage ES devices.5. Do not use freon-propelled chemicals. These can generate electrical change sufficient to damage ES devices.6. Do not remove a replacement ES device from its protective package until immediately before you are ready to install it. (Most replacementES devices are packaged with lead
10、s electrically shorted together by conductive foam, aluminum foil or comparable conductive material.)7. Immediately before removing the protective material from the leads of a replacement ES device, touch the protective material to thechassis or circuit assembly into which the device will be install
11、ed.Be sure no power is applied to the chassis or circuit, and observe all other safety precautions.8. Minimize bodily motions when handling unpackaged replacement ES devices. (Otherwise harmless motion such as the brushing togetheror your clothes fabric or the lifting of your foot from a carpeted fl
12、oor can generate static electricity sufficient to damage an ES devices.CAUTION :AVR220 AVR220 harman/kardon www.freeservicemanuals.infoIts Freewww.freeservicemanuals.infoRadioFans.CN 收音机爱 好者资料库21. Inspect all lead dress to make certain thatleads are not pinched or that hardware is notlodged between
13、the chassis and other metalpartsintheunit.2. Be sure that any protective devices such asnonmetallic control knobs, insulating fish-papers,cabinetbacks,adjustmentandcompartment covers or shields, isolationresistor-capacitynetworks,mechanicalinsulators, etc. Which were removed for theservicingareprope
14、rlyre-installed.Before returning the unit to the user, perform the following safety checks :3. Be sure that no shock hazard exists ; check for leakagecurrentusingSimpsonModel229LeakageTester,standardequipment item No. 21641, RCA Model WT540A or usealternate method asfollows : Plug the power cord dir
15、ectlyInto a 120 volt AC receptacle (do not use an IsolationTransformer for this test). Using two clip leads, connect a1500ohms,10wattResistorparalleledbya0.15uFcapacitor,inserieswithallexposedmetalcabinetpartsandaknownearthground,suchas a water pipe or conduit. Use a VTVM or VOM with 1000 ohms per v
16、olt, or higher sensitivity to measure the AC voltage drop across theresistor. (See diagram) Move the resistor connection to each exposed metal part having a return path to the chassis (antenna, metal,cabinet,screwheads,knobsandcontrolshafts,escutcheon,etc.)andmeasuretheACvoltagedropacrosstheresistor
17、.(Thistestshouldbeperformedwiththe0.35voltRMSormoreisexcessiveandindicatesapotentialshockhazardwhichmustbecorrectedbeforereturningtheunittotheowner.AVR220 AVR220 harman/kardon www.freeservicemanuals.infoIts Freewww.freeservicemanuals.info34 TECHNICAL SPECIFICATIONSTechnical SpecificationsAudio Secti
18、onStereo Mode Continuous Average Power (FTC)55 Watts per channel, 0.07% THD, 20Hz 20kHz,both channels driven into 8 ohmsFive-Channel Surround Modes Power Per Individual ChannelFront L&R channels:45 Watts per channel 0.07% THD, 20Hz20kHz into 8 ohmsCenter channel:45 Watts 0.07% THD, 20Hz20kHz into 8
19、ohmsSurround channels:45 Watts per channel 0.07% THD, 20Hz20kHz into 8 ohmsInput Sensitivity/ImpedanceLinear (High-Level)200mV/47k ohmsSignal-to-Noise Ratio (IHF-A)95dBSurround System Adjacent Channel SeparationAnalog Source Decoding 45dBDolby Digital 55dBDTS55dBFrequency Response 1W (+0dB, 3dB)10Hz
20、100kHzHigh Instantaneous Current Capability (HCC)28 AmpsTransient Intermodulation Distortion (TIM)UnmeasurableSlew Rate40V/secFM Tuner SectionFrequency Range87.5108.0MHzUsable SensitivityIHF 1.3 V/13.2dBfSignal-to-Noise RatioMono/Stereo 70dB/68dBDistortionMono/Stereo 0.2%/0.3%Stereo Separation40dB 1
21、kHzSelectivity400kHz, 70dBImage Rejection80dBIF Rejection90dBAM Tuner SectionFrequency Range5201720kHzSignal-to-Noise Ratio45dBUsable SensitivityLoop 500VDistortion1kHz, 50% Mod 0.8%Selectivity10kHz, 30dBVideo SectionTelevision FormatNTSCInput Level/Impedance1Vp-p/75 ohmsOutput Level/Impedance 1Vp-p
22、/75 ohmsVideo Frequency Response10Hz8MHz (3dB)GeneralPower RequirementAC 120V/60HzPower Consumption68W idle, 540W maximum (2 channels driven)Dimensions (Max)Width17.3 inches (440mm)Height6.5 inches (165mm)Depth17.1 inches (435mm)Weight31 lb (14.1kg)Depth measurement includes knobs, buttons and termi
23、nal connections.Height measurement includes feet and chassis.All features and specifications are subject to change without notice.Harman Kardon is a registered trademark, and Power for the Digital Revolution is a trademark,of Harman International Industries, Inc.is a trademark of Harman Internationa
24、l Industries, Inc. (Patent No. 5,386,478).*Manufactured under license from Dolby Laboratories.Dolby, Pro Logic II,AC-3 and the Double-D symbol aretrademarks of Dolby Laboratories. Confidential UnpublishedWorks. 19921999 Dolby Laboratories, Inc.All rights reserved.DTS and DTS Surround are trademarks
25、of Digital Theater Systems, Inc.UltraStereo is a trademark of UltraStereo Corp.VMAx is a registered trademark of Harman International Industries, Inc., and is an implementation of Cooper Bauck Transaural Stereo under patent license.Logic 7 is a registered trademark of Lexicon, Inc.Crystal is a regis
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