HarmanKardon-HK3380-rec-sm1维修电路原理图.pdf

harman/kardon HK3380 HK3380 STEREO RECEIVER SERVICE MANUAL CONTENTS ESD WARNING.2 LEAKAGE TESTING.3 SPECIFICATIONS .4 FRONT PANEL CONTROLS .5 REAR PANEL CONNECTIONS .8 REMOTE CONTROL FUNCTIONS .10 TROUBLESHOOTING GUIDE.12 PROCESSOR RESET.12 AMPLIFIER BIAS ADJUSTMENT.13 BULLETIN HK2003-10. .14 BULLETIN HK2004-02. .16 DISASSEMBLY PROCEDURES17 EXPLODED VIEW .20 BLOCK DIAGRAM.21 FRONT PANEL DISPLAY.22 IC DESCRIPTIONS/PINOUTS26 ELECTRICAL PARTS LIST .40 PCB DRAWINGS.45 SCHEMATICS.47 WIRING DIAGRAM.53 PACKAGE.54 harman/kardon, Inc. 250 Crossways Park Dr. Woodbury, New York 11797 Rev1 8/2004 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 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) 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 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 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 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 chargessufficient 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 are 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 device 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 foot from a carpeted floor can generate static electricity sufficient to damage an ES devices.CAUTION :HK3380 HK3380 harman/kardon RadioFans.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 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 theservicingareproperlyre-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 directlyInto 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 volt, 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.(Thistestshouldbeperformedwiththe0.35voltRMSormoreisexcessiveandindicatesapotentialshockhazardwhichmustbecorrectedbeforereturningtheunittotheowner.HK3380 HK3380 harman/kardon 318 TECHNICAL SPECIFICATIONSHK 3380 TECHNICAL SPECIFICATIONSAudio SectionStereo Mode Continuous Average Power (FTC)80 Watts per channel, 20Hz20kHz 0.07% THD, both channels driven into 8 ohms100 Watts per channel, 20Hz20kHz 80dBIF Rejection100dBTuner Output Level1kHz, 100kHz, Dev 500mVAM Tuner SectionFrequency Range520 1720kHzSignal-to-Noise Ratio40dBUsable SensitivityLoop 500V/MDistortion1kHz, 50% Mod 0.8%Selectivity10kHz, 25dBVideo SectionTelevision SystemNTSC/PAL/SECAMSignal FormatCompositeInput Level1Vp-pInput Impedance75 ohms, unbalancedSync PolarityNegativeOutput Level1Vp-pOutput Impedance75 ohms, unbalancedVideo Frequency Response 10Hz 10MHzGeneralPower RequirementAC 120V/60HzPower Consumption3W standby, 200W maximum (both channels driven)Dimension (Max)(Product)(Shipping)Width17.4 inches (442mm)21.5 inches (545mm)Height6.6 inches (168mm)9.9 inches (251mm)Depth15 inches (382mm)17.9 inches (455mm)Weight20.9 lb (9.48kg)25.1 lb (11.41kg)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 and Power for the Digital Revolution are registered trademarks of Harman International Industries, Incorporated.4H HK K3380 3380 harman/kardon FRONT-PANEL CONTROLS 5FRONT-PANEL CONTROLSFRONT-PANEL CONTROLSSPEAKER 2SPEAKER 1PHONOCDFMVID 1TAPE M.VID 2PRESETAMVID 3AUTOTUNEDSTEREO68 $*79)! #%&(23145202223242526211 System Power Control2 Power Indicator3 Headphone Jack4 Mute5 Speaker 1 Selector6 Phono Input Selector7 Speaker 2 Selector8 T-Mon Input Selector9 Tuning Button) CD Input Selector! Video 1 Input Selector Preset Scan# Video 2 Input Selector$ Video 3 Input Selector% Preset Selector Dimmer Button& FM/AM Selector* Sleep Button( FM Mode Selector Bass Control Treble Control Video 3 Audio/Video Input Balance Control Volume Control Information Display Remote Sensor Window1 System Power Control: Press this button to turnon the HK 3380; press it again to turn the unit off.ThePower Indicator 2 above the switch will initially turnred as the HK 3380 performs a self-check, and it willchange to blue when the unit is on and ready for use.2 Power Indicator: This LED will light in amberwhen the unit is in the Standby mode to signal that the unit is ready to be turned on.When the unit isturned on, the indicator will briefly turn red, and thenchange to blue.A red indicator during normal operation means that the unit is in the Protect mode,and should be turned off and then checked for a possible speaker-wire short circuit.3 Headphone Jack: This jack may be used to listento the HK 3380s output through a pair of headphones.Be certain that the headphones have a standard 14stereo phone plug.4 Mute: Press this button to momentarily silence thespeaker output of the HK 3380.The messageMUTE will flash in the Main Information DisplayB, and the Mute Indicator K will blink.5 Speaker 1 Selector: Press this button to turn thespeakers connected to the Speaker 1OutputTerminals on or off.6 Phono Input Selector: Press this button to selectthe output of a turntable that is connected to thePhono Inputs.7 Speaker 2 Selector: Press this button to turn the speakers connected to the Speaker 2OutputTerminals on or off.8 T-Mon Input Selector: Press this button to listento the output of a tape recorder connected to theTape Monitor Inputs. The dot to the left of theTape Monitor Input Indicator D will flash to indi-cate that the input source is being monitored whenthe HK 3380 is connected to a three-head tapedeck or another unit with off-head playback. Seepage 15 for more information on monitoring taperecordings.9 Tuning Button: Press the left side of the button totune lower-frequency stations and the right side of thebutton to tune higher-frequency stations.When a stationwith a strong signal is tuned, the Tuned Indicator Iwill light.A brief (1/2-second) press of the button willmanually tune to the next frequency increment, whilepressing and holding the button for a longer period willautomatically tune to the next station with a signalstrong enough for acceptable reception.) CD Input Selector: Press this button to listen to the output of a CD player connected to the CDAudio Inputs .NOTE: 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 this productat .5H HK K3380 3380 harman/kardon FRONT-PANEL CONTROLS6 FRONT-PANEL CONTROLS! Video 1 Input Selector: Press this button to listento and/or view the output of a device connected to theVideo 1 Inputs . Preset Scan: Press this button to automaticallyscan through the stations that have been programmedin the HK 3380s memory.The tuner will play five sec-onds of each station before moving to the next presetstation.To stop the scan when the desired station isheard, press the button again. If no preset stationshave been programmed into the HK 3380s memory,the message 0 PRESET will flash in the MainInformation Display B when this button is pressed.(See page 15 for more information on the tuner mem-ory system.)# Video 2 Input Selector: Press this button to lis-ten to and/or view the output of a device connected tothe Video 2 Inputs .$ Video 3 Input Selector: Press this button to listen to and/or view the output of a device connectedto the Video 3 Inputs on either the front orrear panel. If devices are connected to both the front-and rear-panel Video 3 Inputs , then thedevice connected to the rear-panel Video 3 Inputs will be selected first, as indicated by the dot to theleft of the Video 3 Input Indicator D being steadilylit.To select the device connected to the front-panelVideo 3 Inputs , press the Video 3 Input Selector$ again so that the dot to the left of the Video 3Input Indicator D flashes. Each subsequent press ofthe Video 3 Input Selector $ will toggle betweenthe front and rear Video 3 Inputs .% Preset Selector: Press this button to step up ordown through the list of stations that has been enteredinto the preset memory. If no preset stations have been programmed into the HK 3380s memory,the message 0 PRESET will flash in the Main Information Display B when this button ispressed. (See page15 for more information on tunerprogramming.) Dimmer Button: Press this button to dim thefront-panel displays and indicators.The first press ofthe button will dim the displays to one-half normalbrightness and turn off the blue light inside theVolume Control , but the Power Indicator 2will remain lit.The next press of the Dimmer Button will turn off all displays, including the light insidethe Volume Control , but the Power Indicator2will remain lit to remind you that the unit is turnedon. Press the button again to return the display to nor-mal brightness.When the panel is dimmed, it willreturn to normal brightness after the unit is turned off,then on again.& FM/AM Selector: Press this button to select thetuner as the input to the receiver. Press the left side ofthis button to select the FM frequency band, or theright side to select the AM frequency band.* Sleep Button: Press this button to place the unitin the Sleep mode. Each press of the button selectsthe amount of time that will remain before the unitautomatically goes into the Standby mode, as indicatedby the Sleep Timer C, in the following order:( FM Mode Selector: Press this button to selectthe Auto Stereo or Mono mode for FM tuning. In theAuto Stereo mode, the Auto Indicator J and StereoIndicator Hwill light, and stereo reception will beprovided when stations are transmitting stereo signals.In the Mono mode, the left and right signals fromstereo broadcasts will be mixed together and repro-duced through all channels. Select Mono mode for better reception of weak signals. Bass Control: Turn this control to modify the low-frequency output of the left/right channels by as muchas 10dB. Set this control to a suitable position foryour taste and room acoustics. Treble Control: Turn this control to modify thehigh-frequency output of the left/right channels by asmuch as 10dB. Set this control to a suitable positionfor your taste and room acoustics. Video 3 Audio/Video Inputs: The front-panelVideo 3 Audio/Video Inputs are convenient forconnecting devices that will only be used temporarily,such as when you wish to view vacation videos directlyfrom the camera. Connect these jacks to the PLAY/OUT jacks of an audio or video device, such as acamcorder or video-game console.To select the front-panel inputs, press the Video 3 Input Selector $repeatedly until the dot to the left of the Video 3Input Indicator D flashes. In order to view the videosignal of a video device connected to this input,remember to connect the Video Monitor Output to the video input of your TV or video display. Balance Control: Turn this control to change therelative volume for the front left/right channels. Volume Control: Turn the knob clockwise toincrease volume, counterclockwise to decrease volume.When the unit has been muted by pressingthe Mute Button 4, the message MUTE willflash in the Main Information Display B, and theMute Indicator K will blink. Information Display: This display delivers mes-sages and status indications to help you operate thereceiver. Remote Sensor Window: The sensor behindthis window receives infrared signals from the remotecontrol.Aim the remote at this area and do not blockor cover it unless an external remote sensor isinstalled.90min80min70min60min50min40min30min20min10minOFF6H HK K3380 3380 harman/kardon FRONT-PANEL INFORMATION DISPLAYFRONT-PANEL INFORMATION DISPLAY 7F EGABHIJKCSPEAKER 2SPEAKER 1PHONOCDFMVID 1TAPE M.VID 2PRESETAMVID 3AUTOTUNEDSTEREOMUTESLEEPMEMORYDA Speaker Selection IndicatorsB Main Information DisplayC Preset Number/Sleep TimerD Input IndicatorsE Sleep IndicatorF Preset IndicatorG Memory IndicatorH Stereo IndicatorI Tuned IndicatorJ Auto IndicatorK Mute IndicatorA Speaker Selection Indicators: The dot to theleft of the indicator for each speaker pair will lightwhen that pair is active. Press the Speaker 1 5 orSpeaker 2 7 selectors to activate either or bothpairs of speakers.B Mai