HarmanKardon-AVR230-avr-sm2维修电路原理图.pdf

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1、 harman/kardon AVR230 AVR230 6 X 50W 5.1/7.1 CHANNEL A/V RECEIVER SERVICE MANUAL CONTENTS ESD WARNING.2 LEAKAGE TESTING.3 BASIC SPECIFICATIONS.4 FRONT PANEL CONTROLS.5 REAR PANEL CONNECTIONS.7 REMOTE CONTROL FUNCTIONS.10 TROUBLESHOOTING GUIDE.13 PROCESSOR RESET.13 DISASSEMBLY14 BULLETIN HK2003-10.15

2、 TECH TIP HKTT2004-0317 TECH TIP HKTT2003-01.21 UNIT EXPLODED VIEW.22 BLOCK DIAGRAM.23 AMP BIAS ADJUSTMENT.24 PCB DRAWINGS.25 ELECTRICAL PARTS LIST.31 SEMICONDUCTOR PINOUTS67 SCHEMATICS108 WIRING DIAGRAM.124 PACKAGING.125 harman/kardon, Inc. 250 Crossways Park Dr. Woodbury, New York 11797 Rev1 7/200

3、5 www.freeservicemanuals.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 rep

4、lacement parts designated, 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 th

5、e product to the customer.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

6、components.The following 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 gro

7、und. Alternatively, obtain 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

8、 such as aluminum foil, 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 c

9、hargessufficient to damage 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 a

10、re packaged with leads 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 d

11、evice will be installed.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 fo

12、ot from a carpeted floor can generate static electricity sufficient to damage an ES devices.CAUTION :AVR230 AVR230 harman/kardon www.freeservicemanuals.infoIts Freewww.freeservicemanuals.infoRadioFans.CN 收音机爱 好者资料库2SAFETY PRECAUTIONSThe following check should be performed for the continuedprotection

13、 of the customer and service technician.LEAKAGE CURRENT CHECKMeasure leakage current to a known earth ground (waterpipe, conduit, etc.) by connecting a leakage current testerbetween the earth ground and all exposed metal parts of theappliance (input/output terminals, screwheads, metaloverlays, contr

14、ol shaft, etc.). Plug the AC line cord of theappliance directly into a 120V AC 60Hz outlet and turn theAC power switch on. Any current measured must not exceedo.5mA.ANY MEASUREMENTS NOT WITHIN THE LIMITSOUTLINED ABOVE ARE INDICATIVE OF APOTENTIAL SHOCK HAZARD AND MUST BECORRECTED BEFORE RETURNING TH

15、E APPLIANCETO THE CUSTOMER.DeviceundertestTest allexposed metalsurfacesAlso test withplug reversed(Using AC adapterplug as required)AC Leakage TestLeakagecurrenttesterReading shouldnot be above0.5mAEarthgroundAVR230 AVR230 harman/kardon www.freeservicemanuals.infoIts Freewww.freeservicemanuals.infoT

16、ECHNICAL SPECIFICATIONS 4AVR 230 TECHNICAL SPECIFICATIONSAudio SectionStereo Mode Continuous Average Power (FTC)65 Watts per channel, 20Hz20kHz, 0.07% THD, both channels driven into 8 ohmsSix-Channel Surround Modes Power per Individual ChannelFront L&R channels:50 Watts per channel 0.07% THD, 20Hz20

17、kHz into 8 ohmsCenter channel:50 Watts 0.07% THD, 20Hz20kHz into 8 ohmsSurround (L & R Side, L & R back) channels:50 Watts per channel 0.07% THD, 20Hz20kHz into 8 ohmsInput Sensitivity/ImpedanceLinear (High-Level)200mV/47k ohmsSignal-to-Noise Ratio (IHF-A)100dBSurround System Adjacent Channel Separa

18、tionPro Logic I/II 40dBDolby Digital (AC-3)55dBDTS55dBFrequency Response 1W (+0dB, 3dB)10Hz 130kHzHigh Instantaneous Current Capability (HCC)35 AmpsTransient Intermodulation Distortion (TIM)UnmeasurableSlew Rate40V/secFM Tuner SectionFrequency Range87.5108.0MHzUsable SensitivityIHF 1.3V/13.2dBfSigna

19、l-to-Noise RatioMono/Stereo 70/68dBDistortionMono/Stereo 0.2/0.3%Stereo Separation40dB 1kHzSelectivity400kHz, 70dBImage Rejection80dBIF Rejection90dBAM Tuner SectionFrequency Range2301710kHzSignal-to-Noise Ratio45dBUsable SensitivityLoop 500VDistortion1kHz, 50% Mod 0.8%Selectivity10kHz, 30dBVideo Se

20、ctionTelevision FormatNTSCInput Level/Impedance1Vp-p/75 ohmsOutput Level/Impedance1Vp-p/75 ohmsVideo Frequency Response (Composite and S-Video)10Hz8MHz (3dB)Video Frequency Response (Component Video) 10Hz30MHz (3dB)GeneralPower RequirementAC 120V/60HzPower Consumption118W idle, 890W maximum (7 chann

21、els driven)Dimensions (Product)(Shipping)Width17.3 inches (440mm)21.5 inches (545mm) Height6.6 inches (168mm)9.9 inches (251mm) Depth15 inches (382mm)17.9 inches (455mm) (Product)(Shipping)Weight 27.3 lb (12.4kg)31.9 lb (14.5kg)Depth measurement includes knobs, buttons and terminal connections.Heigh

22、t measurement includes feet and chassis.All features and specifications are subject to change without notice.Harman Kardon and Power for the Digital Revolution are registered trademarks of Harman International Industries, Incorporated.is a trademark of Harman International Industries, Incorporated (

23、patent no. 5,386,478).*Manufactured under license from Dolby Laboratories.“Dolby,”“Pro Logic” and the Double-D symbol are trademarks of Dolby Laboratories.DTS, DTS Surround, DTS-ES and DTS Neo:6 are registered trademarks of Digital Theater Systems, Inc.VMAx is a registered trademark of Harman Intern

24、ational Industries, Incorporated, and is an implementation of Cooper Bauck Transaural Stereo under patent license.Logic 7 is a registered trademark of Harman International Industries, Incorporated.Cirrus is a registered trademark of Cirrus Logic, Inc.TMAVR230 AVR230 harman/kardon www.freeservicemanu

25、als.infoIts Freewww.freeservicemanuals.infoFRONT-PANEL CONTROLS1 Main Power Switch: Press this button to applypower to the AVR 230. When the switch is pressedin, the unit is in a Standby mode, as indicated by theamber LED 2 above the Standby/On Switch 3.This button MUST be pressed in to operate the

26、unit.To turn the unit off and prevent the use of the remotecontrol, this switch should be pressed until it popsout from the front panel and the word “OFF” is seenat the top of the switch.NOTE: This switch is normally left in the “ON” position.2 Power Indicator: This LED lights amber when theunit is

27、in the Standby mode to signal that the AVR isready to be turned on.When the unit is in operation,the indicator is blue.3 Standby/On Switch: When the Main PowerSwitch 1 is “ON,” press this button to turn on theAVR 230; press it again to turn the unit off.The PowerIndicator 3 turns blue when the unit

28、is on.4 Headphone Jack: This jack may be used to listento the AVR 230s output through a pair of headphones.The speakers will automatically be turned off when theheadphone jack is in use.5 Tone Mode: Pressing this button enables or dis-ables the Bass and Treble tone controls.When the but-ton is press

29、ed so that TONE IN appears in theLower Display Line , the Bass and Treble controls may be used to adjust the output signals.When the button is pressed once or twice so that thewords TONE OUT appear in the Lower DisplayLine , the output signal will be “flat, ” no matter howthe actual Bass and Treble

30、Controls areadjusted.6 Speaker Selector: Press this button to begin the process of configuring the unit to match the type of speakers used in your listening room. (See pages1820 for more information on speaker setup andconfiguration.)7 Surround Mode Group Selector: Press this but-ton to select the t

31、op-level group of surround modes.Each press of the button will select the current or lastused mode in each of the surround mode groups(e.g., Dolby, DTS, DTS Neo:6, Logic 7, DSP, Stereo).When the button is pressed so that the name of thesurround mode group appears in the on-screen displayand in the L

32、ower Display Line , press theSurround Mode Selector 8 to cycle through theindividual modes available. For example, press this but-ton to select Dolby modes, and then press theSurround Mode Selector 8 to choose from thevarious mode options.1 Main Power Switch2 Power Indicator 3 Standby/On Switch4 Hea

33、dphone Jack5 Tone Mode 6 Speaker Selector7 Surround Mode Group Selector8 Surround Mode Selector9 Tuning Selector)/Buttons! Tuner Band Selector Set Button# Digital Input Selector$ Preset Station Selector% Delay Adjust Selector Input Source Selector& Tuner Mode Selector * Optical 3 Digital Input( Coax

34、ial 3 Digital Input Video 4 Video Input Jacks Video 4 Audio Input Jacks Bass Control Balance Control Treble Control Channel Adjust Selector Volume Control Input Indicators Speaker/Channel Input Indicators Upper Display Line Lower Display Line Surround Mode Indicators Remote Sensor WindowDIGITALLOGIC

35、 7VID 1DVDCDFMAMTAPE6 8 CHVID 2VID 3VID 4PRO LOGIC 3 STEREO DSP5 CH. STEREOSURR. OFF1267#(*8)!)&%3459$FRONT-PANEL CONTROLSFRONT-PANEL CONTROLS 5 5NOTE: To make it easier to follow the instructions that refer to this illustration, a larger copy may be downloaded from the Product Support section for t

36、his productat .AVR230 AVR230 harman/kardon www.freeservicemanuals.infoIts Freewww.freeservicemanuals.info8 Surround Mode Selector: Press this button to select from among the available surround modeoptions for the mode group selected.The specificmodes will vary based on the number of speakersavailabl

37、e, the mode group and if the input source isdigital or analog. For example, press the SurroundMode Group Selector 7 to select a main modegrouping such as Dolby or Logic 7, and then pressthis button to see the specific mode choices available.For more information on mode selection, see page 26.9 Tunin

38、g Selector: Press the left side of the buttonto tune lower-frequency stations and the right side ofthe button to tune higher-frequency stations.When thetuner is in the Manual mode, each tap will increase ordecrease the frequency by one increment.When thetuner receives a strong enough signal for adeq

39、uatereception, MANUAL TUNED will appear in theon-screen display and the Lower Display Line.When the tuner is the Auto mode, press the buttononce, and the tuner will scan for a station with accept-able signal strength.When the next station with astrong signal is tuned the scan will stop and the on-sc

40、reen display and Lower Display Linewill indi-cate AUTO TUNED.When an FM Stereo stationis tuned, the display will read AUTO STTUNED.To switch back and forth between the Auto andManual tuning modes, press the Tuner ModeSelector &.)/Buttons: When configuring the AVR 230ssettings,use these buttons to se

41、lect from the availablechoices.! Tuner Band Selector: Press this button to turnthe AVR on and to select the Tuner as the input. Pressit again to switch between the AM and FM frequencybands.(See page 28 for more information on the tuner.) Set Button: When making choices during thesetup and configurat

42、ion process, press this button to enter the desired setting into the AVR 230s memory.# Digital Input Selector: Press this button toselect one of the digital inputs or the analog input forany source. (See pages 2528 for more informationon digital audio.)$ Preset Stations Selector: Press this button t

43、oscroll up or down through the list of stations that havebeen entered into the preset memory. (See page 28for more information on tuner presets.)% Delay Adjust Selector: Press this button tobegin the steps required to enter delay settings. (Seepage 20 for more information on delay times.) Input Sour

44、ce Selector: Press this button tochange the input by scrolling up or down through thelist of Input Indicators .& Tuner Mode Selector: Press this button to selectAuto or Manual tuning.When the button is pressed sothat the AUTO appears in the Lower Display Line, the tuner will search for the next stat

45、ion with anacceptable signal when the Tuning Selector 9uis pressed.When the button is pressed so that MANUAL appears in the Lower Display Line ,each press of the Tuning Selector 9u willincrease the frequency.This button may also be used toswitch between Stereo and Mono modes for FM radioreception.Wh

46、en weak reception is encountered, pressthe button so that MANUAL appears in the LowerDisplay Line and on the on-screen display toswitch to Mono reception. Press it again to switch backto Stereo mode. (See page 28 for more information onusing the tuner.)* Optical 3 Digital Input: Connect the optical

47、digitalaudio output of an audio or video product to this jack.When the input is not in use, be certain to keep theplastic cap installed to avoid dust contamination thatmight degrade future performance.( Coaxial 3 Digital Input: This jack is used forconnection to the output of portable audio devices,

48、video game consoles or other products that have acoax digital audio jack. Video 4 Video Input Jacks: These jacks may be used for temporary connection to the composite orS-Video output of video games, camcorders or otherportable video products.You may make a connectionto either jack at any time,but n

49、ot to both simultaneously. Video 4 Audio Input Jacks: These audio jacksmay be used for temporary connection to videogames or portable audio/video products such as camcorders and portable audio players. Bass Control:Turn this control to modify the low-frequency output of the left/right channels by as

50、 much as 10dB. Balance Control: Turn this control to change therelative volume for the front left/right channels.NOTE: For proper operation of the surround modesthis control should be at the midpoint or “12 oclock”position.Treble Control:Turn this control to modify the highfrequency output of the le