HarmanKardon-AVR45-avr-sm维修电路原理图.pdf
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1、harman/kardon AVR45 AVR45 A/V DOLBY DIGITAL RECEIVER SERVICE MANUAL CONTENTS ELECTROSTATICALLY SENSITIVE(ES)DEVICES.2 LEAKAGE TEST. 3 SPECIFICATIONS4 CONTROLS AND FUNCTIONS.6 REAR PANEL CONNECTIONS.8 SERVICE PROCEDURE.9 ALIGNMENT PROCEDURES.9 MAIN AMP IDLING CURRENT ADJUSTMENT10 ALIGNMENT AND TEST P
2、OINTS. 11 CIRCUIT DESCRIPTION .13 BLOCK DIAGRAM. 16 DISASSEMBLY PROCEDURES .17 GENERAL UNIT PARTS LIST.18 GENERAL UNIT EXPLODED VIEW.20 SERVICE BULLETIN HK9804.21 SERVICE BULLETIN HK9903.22 SERVICE BULLETIN HK2000-01.23 SERVICE BULLETIN HK2001-02.25 PC . BOARDS.27 ELECTRICAL PARTS LIST .32 IC BLOCK
3、DIAGRAMS .48 CPU BLOCK DIAGRAM.59 DISPLAY SEGMENTS.67 FLT PIN CONFIGURATION 68 SCHEMATIC DIAGRAMS.69 SCHEMATIC DIAGRAMS (RDS/SG).76 SEMICONDUCTOR PIN DIAGRAM85 WIRING DIAGRAM 86 PACKING MATERIAL AND PARTS LIST .87 harman/kardon, Inc. 250 Crossways Park Dr. Woodbury, New York 11797 Rev1 8/2005 RadioF
4、ans.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 designated, or parts with the same ratings or resistanc
5、e, 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 customer.Some semiconductor (solid state) devices can
6、 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 following techniques should be used to help reduce the
7、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, obtain and wear a commercially available dischargi
8、ng 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 foil, toprevent electrostatic charge build-up or exp
9、osure 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 damage ES devices.5. Do not use freon-propelled ch
10、emicals. 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 leads electrically shorted together by conductive foa
11、m, 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 installed.Be sure no power is applied to the chassis or
12、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 floor can generate static electricity sufficient to
13、 damage an ES devices.CAUTION :2RadioFans.CN 收音机爱 好者资料库1 Inspect all lead dress to make certain thatleads are not pinched or that hardware is notlodged between the chassis and other metalpartsintheunit.2. Be sure that any protective devices such asnonmetallic control knobs, insulating fish-papers,ca
14、binetbacks,adjustmentandcompartment covers or shields, isolationresistor-capacitynetworks,mechanicalinsulators, etc. Which were removed for theservicingareproperlyre-installed.Before returning the unit to the user, perform the following safety checks :3. Be sure that no shock hazard exists ; check f
15、or leakagecurrentusingSimpsonModel229LeakageTester,standardequipment item No. 21641, RCA Model WT540A or usealternate method as follows : Plug the power cord directlyInto a 120 volt AC receptacle (do not use an IsolationTransformer for this test). Using two clip leads, connect a1500ohms,10wattResist
16、orparalleledbya0.15uFcapacitor,inserieswithallexposedmetalcabinetpartsandaknownearthground,suchas a water pipe or conduit. Use a VTVM or VOM with 1000 ohms per volt, or higher sensitivity to measure the AC voltage drop across theresistor. (See diagram) Move the resistor connection to each exposed me
17、tal part having a return path to the chassis (antenna, metal,cabinet,screwheads,knobsandcontrolshafts,escutcheon,etc.)andmeasuretheACvoltagedropacrosstheresistor.(Thistestshouldbeperformedwiththe0.35voltRMSormoreisexcessiveandindicatesapotentialshockhazardwhichmustbecorrectedbeforereturningtheunitto
18、theowner.3Continuous Power OutputRMS Output PowerRMS Output PowerLine level at pre-outSurround mode : BYPASS(STEREO)Input Signal : L ch (only) 200mVMaster Volume :5dBLow pass crossover frequencySlope (Low Pass Filter)Input Sensitivify / ImpedenceVID1/VID2/VID3Output Level / ImpedanceVID1/VID2/VID3Fr
19、equency Response at-3dBTuning Cover Range 100kHz Step for AVR-45(STEREO MODE), Input : CDTHD : 0.08%, 8 ohmsBoth Channel Driven(20Hz-20kHz)(SURROUND MODE)THD : 0.5%, 8 ohms, 1kHzTHD : at 60W, 8 ohms, Input : CD20Hz1kHz20kHzIM Distortion at 70W, 8 ohms, Vol : Max.THD(0.5%, 8 ohms, 1kHz)All Channel Dr
20、ivenTHD(0.5%, 8 ohms, 1kHz)All Channel DrivenS/N Ratio(Input Shorted, IHF-A WTD)Delay : 20ms, Input Level : 200mVFrequency Response at-3dB8 ohms, Dolby Pro LogicS/N Ratio(Input Level : 200mV)Input Shorted, IHF-A WTDFrequency Respones at-3dB8 ohms, Dolby Pro LogicInput Sensitivity for Rated Power Out
21、put(60W)CD/DVD/TAPE MONITORVID1/VID2/VID3S/N Ratio Input Shorted at 1 kHz 1W Output(WTD IHF-A)CDTone ControlBass : 100HzTreble : 10kHz100Hz1kHz10kHzFrequency Response at-3dBChannel Crosstalk Input Shorted by 1 K OhmsMode : Stereo(1Watt)NominalLimit5W5W0W5W65dB100Hz-20kHz 150Hz-20kHz50W60dB55W65dB100
22、Hz-20kHz 150Hz-20kHz50W60dB1Vp-p/75DC-8 MHzohm/1dBDC-6 MHz70Hz cut off24dB/octave0W0.08%0.08%0.08%0.03%0.03%0.03%0.08%170230mV170230mV0.03%200mV200mV10dB3dB10dB3dB10dB3dB10dB3dB10Hz-80kHz82dB10dB10dB10dB10dB63dB63dB62dB10Hz-70kHz55dB55dB45dB87.50-108.00MHz1Vp-p/75ohm/1dB417.2dbf0dB0dB3.3dbf0.5%60dB.
23、0dB.0dB50B39.2dbf65dbf2.5dBdB350-650mV65dbfTuning Cover Range(MW)AVR-45 : 10kHz/StepAVR-45RDS/SG : 9kHz StepUsable Sensitivity(MW, at 999 / 1000kHz)NominalLimit520-1710kHz522-1611kHz500uV/m00uV/mTuning Cover Range 50 kHz Step for AVR-45RDS/SGImage Rejection(at 999kHz)IF Rejection(at 999/1000kHz)AGC
24、Figure of Merit(From 100mV/m at 999/1000kHz)Distortion(999/1000kHz, 30% MOD, 50mV/m Input)Frequency Response(999/1000Hz)At-3dBSelectivity(999/1000Hz)9kHz/10kHzS/N Ratio(999/1000kHz, With Antenna Input 5mV/m)Overload Break-up at 999/1000kHz(THD 10%)Tape Output Level at 999/1000kHz(5mV/m Input)Mono Us
25、able Sensitivity(75 ohms Input, 98MHz)Image Rejection(at 98MHz)IF Rejection(at 90MHz)46dB Queting Sensitivity(at 98MHz, 100% MOD.)StereoDistortion(1kHz, 75kHz dev. At 98MHz, 71dbf Input)MonoS/N Ratio(500uV Input, 100% MOD. At 98MHz)StereoFrequency Response(30Hz-15kHz)AVR-45 De-Emphasis : 75AVR-45RDS
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