HarmanKardon-AVR144-avr-sm维修电路原理图.pdf

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1、 harman/kardon AVR144 AVR144 5 X 30W 5.1 CHANNEL A/V RECEIVER SERVICE MANUAL CONTENTS ESD WARNING.2 LEAKAGE TESTING.3 BASIC SPECIFICATIONS.4 PACKAGING.5 FRONT PANEL CONTROLS.6 REAR PANEL CONNECTIONS.8 REMOTE CONTROL FUNCTIONS.10 CONNECTIONS/INSTALLATION.13 OPERATION.22 TROUBLESHOOTING GUIDE.27 REMOT

2、E & PROCESSOR RESETS.27 DISASSEMBLY.28 UNIT EXPLODED VIEW.31 EXPLODED VIEW PARTS LIST32 AMP BIAS ADJUSTMENT.33 BLOCK DIAGRAM.34 PCB DRAWINGS35 ELECTRICAL PARTS LIST.42 SEMICONDUCTOR PINOUTS.69 SCHEMATICS151 WIRING DIAGRAM158 harman/kardon, Inc. 250 Crossways Park Dr. Woodbury, New York 11797 Rev 0 2

3、/2007 RadioFans.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

4、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 customer.Some semiconductor (solid state)

5、 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 following techniques should be used to help

6、 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, obtain and wear a commercially availab

7、le 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 foil, toprevent electrostatic charge bui

8、ld-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 damage ES devices.5. Do not use freon-

9、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 leads electrically shorted together by co

10、nductive 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 installed.Be sure no power is applied to the

11、 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 floor can generate static electricity s

12、ufficient to damage an ES devices.CAUTION :AVR144 harman/kardonharman/kardon RadioFans.CN 收音机爱 好者资料库2SAFETY PRECAUTIONSThe following check should be performed for the continuedprotection of the customer and service technician.LEAKAGE CURRENT CHECKMeasure leakage current to a known earth ground (wate

13、rpipe, conduit, etc.) by connecting a leakage current testerbetween the earth ground and all exposed metal parts of theappliance (input/output terminals, screwheads, metaloverlays, control shaft, etc.). Plug the AC line cord of theappliance directly into a 120V AC 60Hz outlet and turn theAC power sw

14、itch 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 THE APPLIANCETO THE CUSTOMER.DeviceundertestTest allexposed metalsurfacesAlso test withplug reversed(Using AC adapte

15、rplug as required)AC Leakage TestLeakagecurrenttesterReading shouldnot be above0.5mAEarthground3AVR144 h ha ar rmmanan/k/karard do on n AVR 144 TECHNICAL SPECIFICATIONSAudio SectionStereo Mode Continuous Average Power (FTC)40 Watts per channel, 20Hz20kHz, 0.07% THD, both channels driven into 8 ohmsF

16、ive-Channel Surround Modes Power per Individual ChannelFront L&R channels:30 Watts per channel 0.07% THD, 20Hz20kHz into 8 ohmsCenter channel:30 Watts 0.07% THD, 20Hz20kHz into 8 ohmsSurround (L & R Side) channels:30 Watts per channel 0.07% THD, 20Hz20kHz into 8 ohmsInput Sensitivity/ImpedanceLinear

17、 (High-Level)200mV/47k ohmsSignal-to-Noise Ratio (IHF-A)100dBSurround System Adjacent Channel SeparationPro Logic I/II 40dBDolby Digital (AC-3)55dBDTS55dBFrequency Response 1W (+0dB, 3dB)10Hz 130kHzHigh Instantaneous Current Capability (HCC)25 AmpsTransient Intermodulation Distortion (TIM)Unmeasurab

18、leSlew Rate40V/secFM Tuner SectionFrequency Range87.5108.0MHzUsable SensitivityIHF 1.3V/13.2dBfSignal-to-Noise RatioMono/Stereo 70/68dBDistortionMono/Stereo 0.2/0.3%Stereo Separation40dB 1kHzSelectivity400kHz, 70dBImage Rejection80dBIF Rejection90dBAM Tuner SectionFrequency Range5201720kHzSignal-to-

19、Noise Ratio45dBUsable SensitivityLoop 500VDistortion1kHz, 50% Mod 0.8%Selectivity10kHz, 30dBVideo SectionTelevision FormatNTSCInput Level/Impedance1Vp-p/75 ohmsOutput Level/Impedance1Vp-p/75 ohmsVideo Frequency Response (Composite and S-Video)10Hz8MHz (3dB)Video Frequency Response (Component Video)

20、10Hz100MHz (3dB)GeneralPower RequirementAC 120V/60HzPower Consumption65W idle, 540W maximum (5 channels driven)Dimensions (Product)(Shipping)Width17-5/16 inches (440mm)21-7/8 inches (555mm) Height6-1/2 inches (165mm)10-1/2 inches (266mm) Depth15 inches (382mm)18-5/16 inches (465mm)(Product)(Shipping

21、)Weight 21.12 lb (9.6kg)26 lb (11.8kg)Depth measurement includes knobs, buttons and terminal connections.Height measurement includes feet and chassis.All features and specifications are subject to change without notice.Harman Kardon, Harman International and Logic 7 are trademarks of Harman Internat

22、ional Industries,Incorporated, registered in the United States and/or other countries. Designed to Entertain is a trademark of Harman International Industries, Incorporated.Dolby, Pro Logic and the double-D symbol are trademarks of Dolby Laboratories.Manufactured under license from Dolby Laboratorie

23、s.“DTS,”“DTS Surround,”“DTS-ESINeo:6” are registered trademarks of DTS, Inc.“96/24” is a trademark, of DTS, Inc.Cirrus Logic is a registered trademark of Cirrus Logic, Inc.SACD is a trademark of Sony Corporation.Blu-ray Disc is a trademark of the Blu-ray Disc Association.HD-DVD is a trademark of the

24、 DVD Format/Logo Licensing Corporation (DVD FLLC).TiVo is a registered trademark of TiVo Inc.Please register your product on our Web site at . Note:Youll need the products serial number.At the same time, you can choose to be notified about our new products and/or special promotions.HKP1482AVR144-om

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29、ard do on n 8Main Power Switch:This is a mechanical switch that turns thepower supply on or off. It is usually left pressed in (On position) at alltimes, and cannot be turned on using the remote control.Standby/On Switch:This is an electrical switch that turns thereceiver on for playback, or leaves

30、it in standby mode for quick turn-onusing this switch or the remote control.Power Indicator:This LED has three possible modes.When mainpower is turned off, the LED is dark and the receiver wont respond toany button presses.When main power is turned on, but before theStandby/On Switch is used, the LE

31、D turns amber to indicate that thereceiver is in Standby mode and ready to be turned on.When thereceiver is turned on, the LED turns blue.Source Select:Press this button to select a source device, which isa component where a playback signal originates, e.g., DVD, CD, cableTV, satellite or HDTV tuner

32、.Source Indicators:The name of the current source input lights up.The indicated input changes each time the Source Select Button ispressed.Volume Knob:Turn this knob to raise or lower the volume, which willbe shown in decibels (dB) in the Message Display.Message Display:Various messages appear in th

33、is two-line displayin response to commands.When the on-screen display menu system(OSD) is in use, the message OSD ON will appear to remind you tocheck the video display.Tuner Band:Press this button to select the tuner as the source, or toswitch between the AM and FM bands.Tuning:Press either side of

34、 this button to tune a radio station.Tuning Mode:This button toggles between manual (one frequencystep at a time) and automatic (seeks frequencies with acceptable signalstrength) tuning mode. It also toggles between stereo and mono modeswhen an FM station is tuned.Preset Stations:Press this button t

35、o select a preset radio station.Headphone Jack:Plug a 1/4 headphone plug into this jack for private listening.Surround Mode:Press this button to select a type of surroundsound (e.g., multichannel) mode. Choose from the Dolby modes, DTSmodes, Logic 7 modes, DSP modes or Stereo modes.Surround Select:A

36、fter you have selected the desired type of sur-round mode, press this button to select a specific variant of that type of mode.Surround Mode Indicators:One or more of these icons may lightup as you select different surround modes.The Message Display alsoindicates the surround mode.Analog Audio,Video

37、 and Digital Audio Inputs:Connect asource component that will only be used temporarily to these jacks,such as a camera or game console. Remember to select only one typeof audio and one type of video connection.Speaker/Channel Input Indicators:The box icons indicatewhich speaker positions you have co

38、nfigured, and the size (frequencyrange) of each speaker.When a digital audio input is used, letters willlight inside the boxes to indicate which channels are present in theincoming signal.FRONT-PANEL CONTROLSHKP1482AVR144-om 9/7/06 3:10 PM Page 86AVR144 harman/kardonharman/kardon SurroundModeTuningP

39、reset StationsSurroundSelectTuner BandTuning ModeSourceSelectHeadphoneJackDigitalAudio InputsVideo InputsAnalog AudioInputsPowerIndicatorMain PowerSwitchStandby/OnSwitchVolumeSourceIndicatorsMessage DisplaySurround Mode IndicatorsSpeaker/ChannelInput IndicatorsNOTE: To make it easier to follow the i

40、nstructions throughout the manual that refer to this illustration, a copy of this page may be downloaded from the Product Support section .HKP1482AVR144-om 9/7/06 3:10 PM Page 97AVR144 harman/kardonharman/kardon 10REAR-PANEL CONNECTIONSAM and FM Antenna Terminals:Connect the included AM andFM antenn

41、as to their respective terminals for radio reception.Front, Center and Surround Speaker Outputs:Use two-conductor speaker wire to connect each set of terminals to the correctspeaker. Remember to observe the correct polarity (positive and negativeconnections).Always connect the positive lead to the c

42、olored terminalon the receiver and the red terminal on the speaker. Connect the negativelead to the black terminal on both the receiver and the speaker. See theConnections section for more information on connecting your speakers.Subwoofer Output:If you have a powered subwoofer, connect it tothis jac

43、k.Video 1,Video 2 and DVD Audio/Video Inputs:These jacksmay be used to connect your video-capable source components (e.g.,VCR, DVD player, cable TV box) to the receiver. Remember to use onlyone type of video connection for each source. See the Connectionssection for more information on audio and vid

44、eo connection options foreach source component.Video 1 Audio/Video Outputs:These jacks may be used to con-nect your VCR or another recorder.Composite and S-Video Monitor Outputs:If some of yoursources use composite or S-video connections, then you will need toconnect one or both of these monitor out

45、puts to the correspondinginputs on your television or video display in order to view the sources.CD and Tape Audio Inputs:These jacks may be used to connectyour audio-only source components (e.g., CD player, tape deck). Do notconnect a turntable to these jacks unless you are using the turntablewith

46、a phono preamp.Tape Outputs:These jacks may be used to connect your CDR oranother audio-only recorder.Coaxial and Optical Digital Audio Inputs:If your source has a compatible digital audio output, connect it to one of these jacks forimproved audio performance. Remember to use only one type of digita

47、laudio connection for each source.6-Channel Inputs:Connect the analog audio outputs of a DVD-Audio, SACD, Blu-ray Discor HD-DVDplayer (or any other externaldecoder) to these jacks to enjoy these proprietary formats.Component Video Inputs:If both your video source (e.g., DVDplayer or HDTV tuner) and

48、your television or video display have analogcomponent video (Y/Pb/Pr) capability, then you may connect the com-ponent video outputs of your source to one of the two component videoinputs. Do not make any other video connections to that source.Component Video Monitor Outputs:If you are using one orbo

49、th of the Component Video Inputs and your television or video displayis component-video-capable, you may connect these jacks to the corre-sponding inputs on your video display.You will also need to connect thecomposite and/or S-video monitor outputs to your video display if someof your sources use t

50、hose types of video connections and to view theon-screen menus.AC Power Cord:After you have made all other connections, plug theAC power cord into an unswitched outlet.HKP1482AVR144-om 9/7/06 3:10 PM Page 108AVR144 harman/kardonharman/kardon FM AntennaAM AntennaVideo 2A/VInputsVideo 1A/VOutputsVideo