HarmanKardon-AVR335-avr-sm维修电路原理图.pdf

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1、 harman/kardon AVR335 AVR335 7 X 55W 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 INSTALLATION/CONNECTIONS.13 OPERATION.15 TROUBLESHOOTING GUIDE.21 PROCESSOR RESET.2

2、1 UNIT EXPLODED VIEW.22 DISASSEMBLY23 AMP BIAS ADJUSTMENT.24 TECH TIP HKTT2003-01.25 BLOCK DIAGRAM.26 PCB DRAWINGS.27 ELECTRICAL PARTS LIST.34 SEMICONDUCTOR PINOUTS.77 SCHEMATICS119 WIRING DIAGRAM.126 PACKAGING.127 harman/kardon, Inc. 250 Crossways Park Dr. Woodbury, New York 11797 Rev1 5/2005 www.f

3、reeservicemanuals.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 replacemen

4、t 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 produ

5、ct 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 compone

6、nts.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. Al

7、ternatively, 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 a

8、s 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 chargess

9、ufficient 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 pack

10、aged 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 w

11、ill 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

12、 a carpeted floor can generate static electricity sufficient to damage an ES devices.CAUTION :AVR335 AVR335 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 of the

13、 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, control shaf

14、t, 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 THE APPLI

15、ANCETO THE CUSTOMER.DeviceundertestTest allexposed metalsurfacesAlso test withplug reversed(Using AC adapterplug as required)AC Leakage TestLeakagecurrenttesterReading shouldnot be above0.5mAEarthgroundAVR335 AVR335 harman/kardon www.freeservicemanuals.infoIts Freewww.freeservicemanuals.infoAVR 335

16、TECHNICAL SPECIFICATIONSAudio SectionStereo Mode Continuous Average Power (FTC)70 Watts per channel, 20Hz20kHz, 0.07% THD, both channels driven into 8 ohmsSeven-Channel Surround Modes Power per Individual ChannelFront L&R channels:55 Watts per channel 0.07% THD, 20Hz20kHz into 8 ohmsCenter channel:5

17、5 Watts 0.07% THD, 20Hz20kHz into 8 ohmsSurround (L & R side, L & R back) channels:55 Watts per channel 0.07% THD, 20Hz20kHz into 8 ohmsInput Sensitivity/ImpedanceLinear (High-Level)200mV/75k ohmsSignal-to-Noise Ratio (IHF-A)100dBSurround System Adjacent Channel SeparationPro Logic I/II 40dBDolby Di

18、gital (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/13.2dBfSignal-to-Noise RatioMono/Stereo 70/

19、68dBDistortionMono/Stereo 0.2/0.3%Stereo Separation40dB 1kHzSelectivity400kHz, 70dBImage Rejection80dBIF Rejection90dBAM Tuner SectionFrequency Range5201720kHzSignal-to-Noise Ratio45dBUsable SensitivityLoop 500VDistortion1kHz, 50% Mod 0.8%Selectivity10kHz, 30dBVideo SectionTelevision FormatNTSCInput

20、 Level/Impedance1Vp-p/75 ohmsOutput Level/Impedance1Vp-p/75 ohmsVideo Frequency Response (Composite and S-Video)10Hz8MHz (3dB)Video Frequency Response (Component Video) 10Hz50MHz (3dB)GeneralPower RequirementAC 120V/60HzPower Consumption118W idle, 890W maximum (7 channels driven)Dimensions (Product)

21、(Shipping)Width17.3 inches (440mm)21.5 inches (545mm)Height6.6 inches (168mm)9.9 inches (251mm)Depth15 inches (381mm)17.9 inches (455mm)Weight(Product)(Shipping)31 lb (14.1kg)36.1 lb (16.4kg)Depth measurement includes knobs, buttons and terminal connections.Height measurement includes feet and chass

22、is.All features and specifications are subject to change without notice.Harman Kardon, Power for the Digital Revolution and Logic 7 are registered trademarks, and is a trademark, of Harman International Industries, Incorporated.*Manufactured under license from Dolby Laboratories.“Dolby,”“Pro Logic”

23、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 International Industries, Incorporated, and is an implementation of Cooper Bauck Transaural Stereo u

24、nder patent license.54 TECHNICAL SPECIFICATIONSSupplied AccessoriesThe following accessory items are supplied with the AVR 335. If any of these items are missing, please contact Harman Kardon customer service at . A system remote control An AM loop antenna A Zone II remote control An FM wire antenna

25、 The EzSet+ microphone with a plug adaptor Five AAA batteriesat the end of the units cord AVR335 AVR335 harman/kardon www.freeservicemanuals.infoIts Freewww.freeservicemanuals.infoFRONT-PANEL CONTROLS1 Main Power Switch: Press this button to applypower to the AVR 335. When the switch is pressedin, t

26、he unit is in a Standby mode, as indicated by theamber Power Indicator 2 above the Standby/OnSwitch 3. This button MUST be pressed in tooperate the unit. To turn the unit off and prevent theuse of the remote control, this switch should bepressed until it pops out from the front panel and theword “OF

27、F” is seen at 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 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 Ma

28、in PowerSwitch 1 is “ON,” press this button to turn on theAVR 335; press it again to turn the unit off.The PowerIndicator 3 turns blue when the unit is on.4 Headphone Jack: This jack may be used to listento the AVR 335s output through a pair of headphones.The speakers will automatically be turned of

29、f when theheadphone jack is in use.When configuring your sys-tem using EzSet+, the calibration microphone shouldbe plugged into this jack using the supplied adaptorthat converts the small mini-plug at the end of themicrophones cord to a 1/4 plug.5 Tone Mode: Pressing this button enables or dis-ables

30、 the Bass and Treble tone controls.When the but-ton is pressed 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 sign

31、al will be “flat, ” no matter howthe actual Bass and Treble Controls areadjusted.6 Speaker Select Button: Press this button tobegin the process of configuring the unit to match thetype of speakers used in your listening room. (Seepages 2224 for more information on speaker setupand configuration.)7 S

32、urround Mode Group Selector: Press this but-ton to select the top-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 thed

33、esired surround mode group appears in the on-screen display and in the Lower Display Line ,press the Surround Mode Selector 8 to cyclethrough the individual modes available. For example,press this button to select Dolby modes, and thenpress the Surround Mode Selector 8 to choosefrom the various mode

34、 options.1 Main Power Switch2 Power Indicator 3 Standby/On Switch4 Headphone 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 Inpu

35、t Source Selector& Tuner Mode Selector * Optical 4 Digital Input( Coaxial 4 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

36、Display Line Surround Mode Indicators Remote Sensor WindowFRONT-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 this product at . AVR335 AVR335 harman/kardon

37、 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 speakersavailable, the mode group and if the input source

38、isdigital or analog. For example, press the SurroundMode Group Selector 7 to select a mode groupingsuch as Dolby or Logic 7, and then press this buttonto see the specific mode choices available. For moreinformation on mode selection, see page 28.9 Tuning Selector: Press the left side of the buttonto

39、 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 adequatereception, MANUAL TUNED will appear in theo

40、n-screen display and the Lower Display Line.When the tuner is in 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 andthe on-screen display and the Lower Display Linewillin

41、dicate AUTO TUNED.When an FM Stereo station is tuned, the display will read AUTO STTUNED.To switch back and forth between the Auto andManual tuning modes, press the Tuning ModeSelector &.)/Buttons: When configuring the AVR 335ssettings,use these buttons to select from the availablechoices.! AM/FM Se

42、lector: Press this button to turn theAVR on and to select the Tuner as the input source.Press it again to switch between the AM and FM fre-quency bands. (See page 31 for more information onthe tuner.) Set Button: When making choices during thesetup and configuration process, press this button to ent

43、er the desired setting into the AVR 335s memory.# Digital Input Selector: Press this button toselect one of the digital inputs or the analog input forany source. (See pages 2831 for more informationon digital audio.)$ Preset Station Selector: Press this button toscroll up or down through the list of

44、 stations that havebeen entered into the preset memory. (See page 32for more information on tuner presets.)% Delay Adjust Selector: Press this button tobegin the steps required to enter delay settings. (Seepage 24 for more information on delay times.) Input Source Selector: Press this button tochang

45、e 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 AUTO appears in the Lower Display Line ,the tuner will search for the next station with an accept-able signal when the Tu

46、ning 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.When weak reception is encountered, presst

47、he button so that MANUAL appears in the LowerDisplay Line and in the on-screen display toswitch to Mono reception. Press it again to switch backto Stereo mode. (See pages 3132 for more informa-tion on using the tuner.)* Optical 4 Digital Input: Connect the optical digitalaudio output of an audio or

48、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 4 Digital Input: This jack is used forconnection to the output of portable audio devices,video game consoles or other produc

49、ts that have acoax digital audio jack. Video 4 Video Input Jacks: These jacks may be used for temporary connection to the composite or S-video output of video games, camcorders orother portable video products.You may make a connection to either jack at any time, but not to bothsimultaneously. Video

50、4 Audio Input Jacks: These audio jacksmay be used for temporary connection to videogames or portable audio/video products such as cam-corders and portable audio players. Bass Control:Turn this control to modify the low-frequency output of the left/right channels by as much as 10dB. Balance Control: