HarmanKardon-AVR254-avr-sm维修电路原理图.pdf

harman/kardon AVR254 AVR254 7 X 50W 7.1 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.9 REMOTE CONTROL FUNCTIONS.12 CONNECTIONS/INSTALLATION.15 OPERATION.28 TROUBLESHOOTING GUIDE.32 REMOTE & PROCESSOR RESETS.33 DISASSEMBLY.34 UNIT EXPLODED VIEW.35 EXPLODED VIEW PARTS LIST36 AMP BIAS ADJUSTMENT.37 BLOCK DIAGRAM.38 PCB DRAWINGS39 ELECTRICAL PARTS LIST.46 SEMICONDUCTOR PINOUTS.88 SCHEMATICS.176 WIRING DIAGRAM.189 harman/kardon, Inc. 250 Crossways Park Dr. Released 2008 Woodbury, New York 11797 Rev0 5/2008 Discontinued XXXX 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 : AVR254 harman/kardonharman/kardon RadioFans.CN 收音机爱 好者资料库SAFETY 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 (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 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 THE APPLIANCETO THE CUSTOMER.DeviceundertestTest allexposed metalsurfacesAlso test withplug reversed(Using AC adapterplug as required)AC Leakage TestLeakagecurrenttesterReading shouldnot be above0.5mAEarthground3 AVR254 h ha ar rmmanan/k/karard do on n Audio SectionStereo Mode Continuous Average Power (FTC)65 Watts per channel, 20Hz20kHz, 0.07% THD, both channels driven into 8 ohmsSeven-Channel Surround Modes Power per Individual ChannelFront L & R channels:50 Watts per channel 0.07% THD, 20Hz20kHz 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 SeparationPro 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/13.2dBfSignal-to-Noise RatioMono/Stereo 70/68dBDistortionMono/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 Level/Impedance1Vp-p/75 ohmsOutput Level/Impedance1Vp-p/75 ohmsVideo Frequency Response (Composite and S-Video)10Hz8MHz (3dB)Video Frequency Response (Component Video) 10Hz100MHz (3dB)HDMIVersion 1.3a with 10-bit Deep ColorGeneralPower RequirementAC 120V/60HzPower Consumption65W idle, 540W maximum (7 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)Weight 27.1 lb (12.3kg)32.8 lb (14.9kg)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 Logic 7 are trademarks of Harman International Industries, Incorporated, registered in the United States and/or other countries. EzSet/EQ, Designed to Entertain and The Bridge logo are trademarksof Harman International Industries, Incorporated.iPod is a trademark of Apple Inc., registered in the U.S. and other countries.Audiovox is a registered trademark of Audiovox Corporation.Blu-ray Disc is a trademark of the Blu-ray Disc Association.CEA is a registered trademark of the Consumer Electronics Association.Cirrus Logic is a registered trademark of Cirrus Logic, Inc.Dolby and Pro Logic are registered trademarks, and MLP Lossless is a trademark, of Dolby Laboratories.Manufactured under license from Dolby Laboratories. Dolby and the double-D symbol are trademarks of Dolby Laboratories. Copyright 1999-2004 Dolby Laboratories.All rights reserved.DTS, DTS-ES and DTS Neo:6 are registered trademarks, and DTS 96/24, DTS-HD and DTS-HD Master Audio are trademarks, of DTS, Inc. Manufactured under license under U.S. Patent #s:5,451,942; 5,956,674; 5,974,380; 5,978,762; 6,226,616; 6,487,535; 7,003,467 and other U.S. and worldwide patents issued and pending. 1996-2007 DTS, Inc.All Rights Reserved.Faroudja DCDi Cinema is a registered trademark of Genesis Microchip Inc.HD-DVD is a trademark of the DVD Format/Logo Licensing Corporation (DVD FLLC).HDMI is a trademark or registered trademark of HDMI Licensing LLC.SACD is a trademark of Sony Corporation.TiVo is a registered trademark of TiVo Inc.XM and XM Ready are registered trademarks of XM Satellite Radio.AVR 254 TECHNICAL SPECIFICATIONSPlease register your AVR 254 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.AVR254om.qxd 3/31/08 3:28 PM Page 754 AVR254 h ha ar rmmanan/k/karard do on n POLY BAGNODESCRIPTIONPARTS NO.Q,ty123456711CPB1061WPOLY BAG1. Instruction manual assy - AccessoriesSHEET GUIDE(QUICK START GUIDE)STAPLE8CPL0905CQE1A380Z311CARTAVR254CSA1A020ZREMOCON TRANSMITTER ASSYAM LOOP ANTENNA11CARD WARRANTYCQE1A172X1INSTRUCTION MANUALFM 1 POL ANT(UL)CQX1A1310ZCSA1A019Z11CARD WARRANTYSHEET GUIDE24REMOCONTRANSMITTER ASSY873AM LOOP ANTENNA ASSYMANUAL INSTRUCTION5FM 1 POLE ANT(UL)6STAPLESHEET,FRONT COVERCOVER BCOVER ABAG,POLYPAD, COVERCQE1A219ZCGR1A332H63CPS1A676CPB1A176ZCGR1A331H631 11111COVER ASSYCGRAVR154ZA154321COVER ASSY910IMAGE BROCHURES10HQE1A273Z1IMAGE BROCHURES9SNOW PAD (R)3BOX ,OUT CARTON5SET4SNOW PAD (L)2MICROPHONE ASSY6MANUAL ASSY1 Item Description Part Number Qty 1 Manual, remote, antenna assy 1 2 Foam End Pad, Left CPS5A564Z 1 3 Foam End Pad, Right CPS5A565Z 1 4 AVR254 Receiver AVR 254 1 5 AVR254 Outer Carton CPG1A854Y 1 6 Microphone Assembly CJXAVR340MICRO1 5 AVR254 harman/kardonharman/kardon visit FRONT-PANEL CONTROLSMain Power Switch:This mechanical switch turns the power supplyon or off. It is usually left pressed in (On position), and cannot be turnedon using the remote control.Standby/On Switch:This electrical switch turns the receiver on for playback, or leaves it in Standby mode for quick turn-on using thisswitch or the remote control.Power Indicator:This LED has four possible modes: Main Power Off: When the AVR is unplugged or the Main PowerSwitch is off, this LED is off. Standby: The LED is amber, indicating that the AVR is ready to be turned on. On: The LED is white, when the AVR is on and operating normally. Protect: If the PROTECT message ever appears, turn off the AVR and unplug it. Check all speaker wires for a possible short. If none isfound, bring the unit to an authorized Harman Kardon service centerfor inspection and repair before using it again.Source List:Press this button to select a source device, which is a component where a playback signal originates, such as DVD,cable TV, satellite or the tuner.Volume Knob:Turn this knob to raise or lower the volume.Message Display:Various messages appear in this two-line displayin response to commands and changes in the incoming signal. In normaloperation, the current source name appears on the upper line, while thesurround mode is displayed on the lower line.When the on-screen dis-play menu system (OSD) is in use, the current menu settings appear.Headphone Jack/EzSet/EQ Microphone Input:Plug a 1/4headphone plug into this jack for private listening.This jack is also used to connect the supplied microphone for theEzSet/EQ procedure described in the Initial Setup section.To beginEzSet/EQ, plug the supplied microphone into this jack, place the micro-phone at the listening position, and follow the directions given in theSpeaker Setup-Automatic Setup-EzSet/EQ on-screen menu.Surround Modes:Press this button to select a surround sound (e.g., multichannel) mode.The Surround Modes menu will appear onscreen, and the menu line will appear in the front-panel display.Use the front-panel or remote /Buttons to highlight a differentmenu line:Auto Select,Virtual Surround, Stereo, Movie, Music or VideoGame. Each line represents a type of audio signal, and is set to the preferred surround mode that you manually select.Press the OK Button when the menu line is highlighted, and the available surround mode options for the current signal will appear.Use the /Buttons to select the desired mode, and press the OK Button to engage it. Press the Back/Exit Button to exit the SurroundModes menu.See the Advanced Functions section for more information on surroundmodes.Analog Audio,Video and Digital Audio Inputs:Connect asource component that will only be used temporarily, such as a digitalcamera or game console, to these jacks. Use only one type of audioand one type of video connection.NOTES: Each of these connections (analog audio, digital audio andvideo) may be independently assigned to any source. See theInitial Setup section for information on setting up sources,including assigning audio and video inputs to a source. Although these jacks are labeled Optical 3, Coaxial 3 andVideo 4 on the AVR, the AVRs menus refer to them as theOptical Front, Coaxial Front, Composite Front, S-Video Frontand Analog Front inputs.Speaker/Channel Input Indicators:The box icons indicatewhich speaker positions you have configured (see the Initial SetupSection), and the size (frequency range) of each speaker.The letters will light inside the boxes to indicate which channels are present in the incoming signal.Navigation:These buttons are used to navigate the AVRs menus and to operate the tuner.Remote IR Sensor:This sensor receives infrared (IR) commands from the remote control. It is important to ensure that it is not blocked.If covering the sensor is unavoidable, such as when the AVR 254 isplaced inside a cabinet, you may use an optional Harman Kardon HE 1000, or other infrared receiver, connecting it to the Remote IRInput on the AVR 254s rear panel.Alternatively, connect the Remote IROutput of another compatible component to the AVR 254s Remote IR Input. Point the remote at the other devices remote sensor, and thecommand will be transmitted to the AVR 254.An external IR “blaster”may also be used, positioned to point at this area.AVR Settings Button:Press this button to access the AVRs main menu.Info Settings Button:Press this button to directly access the AVRs Source Info submenu, which contains the settings for the current source.Resolution:Each press of this button changes the AVRs video outputresolution to these settings: 480i, 480p, 720p, 1080i or 1080p.IMPORTANT NOTE: If the AVRs video output resolution is sethigher than the capabilities of the actual connection, you will notsee a picture. If the best video connection from the AVR to theTV is either composite or S-video, press this button until theresolution is set to 480i.AVR254om.qxd 3/28/08 12:45 PM Page 86 AVR254 h ha ar rmmanan/k/karard do on n ResolutionSourceListNavigationVideoModesOKBack/ExitNavigationHeadphoneJack/EzSet/EQMicrophoneInputDigitalAudio Inputs(Optical 3 andCoaxial 3)Video 4 Video InputsVideo 4 Analog Audio InputsSurroundModesAudio EffectsAVRInfoPowerIndicatorMain PowerSwitchStandby/OnSwitchVolumeMessage DisplaySpeaker/ChannelInput IndicatorsRemoteIR Sensor/NOTE: To make it easier to follow the instructions throughout the manual that refer to this illustration, a copy of this page may be downloaded from the Product Support section .AVR254om.qxd 3/28/08 12:45 PM Page 97 AVR254 h ha ar rmmanan/k/karard do on n FRONT-PANEL CONNECTIONSAudio Effects:Press this button to directly access the Audio Effectssubmenu, which allows adjustment of the tone and other controls.See the Initial Setup section for more information.Video Modes:Press this button for direct access to the Video Modessubmenu, which contain