HarmanKardon-AVR120-avr-sm维修电路图 手册.pdf

harman/kardon AVR120 AVR120 A/V DOLBY DIGITAL RECEIVER SERVICE MANUAL CONTENTS ESD WARNING.2 LEAKAGE TESTING.3 BASIC SPECIFICATIONS.4 FRONT PANEL CONTROLS.5 FRONT PANEL DISPLAY.7 REAR PANEL CONNECTIONS.9 REMOTE CONTROL FUNCTIONS.11 TROUBLESHOOTING GUIDE.14 PROCESSOR RESET.14 BULLETIN HK2003-07.15 TECH TIP HKTT2003-01.17 EXPLODED VIEW.18 EXPLODED VIEW PARTS LIST.19 BLOCK DIAGRAM.20 ELECTRICAL PARTS LIST.21 PCB DRAWINGS.54 SEMICONDUCTOR PINOUTS57 SCHEMATICS.100 PACKING.118 harman/kardon, Inc. 250 Crossways Park Dr. Woodbury, New York 11797 Rev3 6/2005 www.freeservicemanuals.infoIts Free www.freeservicemanuals.info RadioFans.CN 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 the parts list in this manual. Leakage-current or resistance measurements must be made to determine that exposed parts are acceptably insulated 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 called Electrostatically Sensitive (ES) Devices. Examples of typical ES devices are integrated circuits and some field effect transistors and semiconductor 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 on your 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, to prevent 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 charges sufficient 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 replacement ES 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 the chassis 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 together or your clothes fabric or the lifting of your foot from a carpeted floor can generate static electricity sufficient to damage an ES devices. CAUTION : AVR120 AVR120 harman/kardon www.freeservicemanuals.infoIts Free www.freeservicemanuals.info RadioFans.CN 2 1. Inspect all lead dress to make certain that leads are not pinched or that hardware is not lodged between the chassis and other metal partsintheunit. 2. Be sure that any protective devices such as nonmetallic control knobs, insulating fish- papers,cabinetbacks,adjustmentand compartment covers or shields, isolation resistor-capacitynetworks,mechanical insulators, etc. Which were removed for the servicingareproperlyre-installed. Before returning the unit to the user, perform the following safety checks : 3. Be sure that no shock hazard exists ; check for leakage currentusingSimpsonModel229LeakageTester,standard equipment item No. 21641, RCA Model WT540A or use alternate method asfollows : Plug the power cord directly Into a 120 volt AC receptacle (do not use an Isolation Transformer for this test). Using two clip leads, connect a 1500ohms,10wattResistorparalleledbya0.15uFcapacitor,inserieswithallexposedmetalcabinetpartsandaknownearthground,such as 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 the resistor. (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.(Thistestshouldbe performedwiththe0.35voltRMSormoreisexcessiveandindicatesapotentialshockhazardwhichmustbecorrectedbeforereturningthe unittotheowner. AVR120 AVR120 harman/kardon www.freeservicemanuals.infoIts Free www.freeservicemanuals.info RadioFans.CN 3 4 TECHNICAL SPECIFICATIONS Technical Specifications Audio Section Stereo Mode Continuous Average Power (FTC) 50 Watts per channel, < 0.07% THD, 20Hz 20kHz, both channels driven into 8 ohms Five-Channel Surround Modes Power Per Individual Channel Front L press it again to turn the unit off. Note that the Power Indicator 3 surrounding the switch will turn green when the unit is on. 3 Power Indicator: This LED will be illumi- nated in amber when the unit is in the Standby mode to signal that the unit is ready to be turned on.When the unit is in operation, the indicator will turn green. Should the indicator turn red, turn the unit off using the Main Power Switch 1 and check the speaker wire connections to make certain that there are no short circuits. 4 Headphone Jack:This jack may be used to listen to the AVR 120s output through a pair of headphones. Be certain that the headphones have a standard 1/4 stereo phone plug. Note that the main room speakers will automatically be turned off when the headphone jack is in use. 5 Selector Buttons:When you are establish- ing the AVR 120s configuration settings,use these buttons to select from the choices available, as shown in the Main Information Display . 6 Tone Mode: Pressing this button enables or disables the Bass and Treble tone controls. When the button is pressed so that the words TONE IN appear in the Main Information Display , the settings of the Bass the tuner will automatically scan for the next station with an acceptable signal and then stop. 9 Tuner Band Selector: Pressing this button will automatically switch the AVR 120 to the Tuner mode. Pressing it again will switch between the AM and FM frequency bands. (See page 25 for more information on the tuner.) ) Preset Stations Selector: Press this button to scroll up or down through the list or stations that have been entered into the preset memory. (See page 26 for more information on tuner presets.) ! Input Source Selector: Press this button to change the input by scrolling up or down through the list of input sources. FM Mode Selector: Press this button to select Auto or Manual tuning.When the button is pressed so that the AUTO Indicator R lights, the tuner will search for the next station with an acceptable signal when the Tuning Selector 8u is pressed.When the button is pressed so that the AUTO Indicator R is not lit, each press of the Tuning Selector 8u will increase the frequency.This button may also be used to switch between Stereo and Mono modes for FM radio reception.When weak reception is encountered, press the button until the STEREO Indicator P goes out to switch to Mono reception. Press and hold again to switch back to STEREO mode. (See page 25 for more information on using the tuner.) # Digital Optical 3 Input: Connect the opti- cal digital output of an audio or video product to this jack.When the input is not in use, be certain to keep the plastic cap installed to avoid dust contamination that might degrade future performance. $ Digital Coax 3 Input: This jack is used for connection to the output of portable audio devices, video game consoles or other products that have a coax digital 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 or other portable video products. Video 4 Audio Input Jacks: These audio jacks may be used for temporary connection to video games or portable audio/video products such as camcorders and portable audio players. VMAx N appears when the Near Field VMAx mode is selected. (See page 22 for a description of the VMAx modes.) I Logic 7 Mode Indicators: These indica- tors light when the Logic 7 mode is in use. LOGIC 7C appears for the Cinema version of Logic 7; LOGIC 7M appears for the Music version of Logic 7. (See page 22 for a description of the Logic 7 modes.) J Preset Number/Sleep Timer: When the tuner is in use, these numbers indicate the spe- cific preset memory location in use. (See page 26 for more information on preset stations.) When the Sleep function is in use, these num- bers show how many minutes remain before the unit goes into the Standby mode. K Night Mode Indicator: This indicator lights when the AVR 120 is in the Night mode, which preserves the dynamic range of digital program material at low volume levels. L Speaker/Channel Input Indicators:These indicators are multipurpose, indicating either the speaker type selected for each channel or the incoming data-signal configuration.The left, center, right, right surround and left surround speaker indicators are composed of three boxes, while the subwoofer is a single box.The center box lights when a “small” speaker is selected, and the two outer boxes light when “large” speakers are selected.When none of the boxes are lit for the center, surround or subwoofer channels, no speaker has been assigned to one of those positions. (See page 17 for more infor- mation on configuring speakers.) The letters inside each of the center boxes display active input channels. For standard analog inputs, only the L and R will light, indicating a stereo input. When a digital source is playing, the indicators will light to display the channels being received at the digital input.When the letters flash, the digital input has been interrupted. (See pages 1819 for more information on the Channel Indicators.) M Preset Indicator: This indicator lights when the tuner is in use to show that the Preset Number/Sleep Timer J is showing the stations preset memory number. (See page 26 for more information on tuner presets.) N Sleep Indicator: This indicator lights when the Sleep function is in use.The numbers in the Preset Number/Sleep Timer Indicators will show the minutes remaining before the AVR 120 goes into the Standby mode. (See page 21 for more information on the Sleep function.) AVR120 AVR120 harman/kardon www.freeservicemanuals.infoIts Free www.freeservicemanuals.info RadioFans.CN 8 FRONT PANEL INFORMATION DISPLAY Front Panel Information Display OMemory Indicator: This indicator flashes when entering presets and other information into the tuners memory. P Stereo Indicator: This indicator lights when an FM station is being tuned in stereo. QTuned Indicator:This indicator lights when a station is being received with sufficient signal strength to provide acceptable listening quality. R Auto Indicator: This indicator lights when the tuners Auto mode is in use. S Analog Input Indicator: This indicator lights when an analog input source has been selected. T Coaxial Digital Input Indicators: These indicators light to show when a Coaxial Digital Input has been selected. U Optical Digital Input Indicators: These indicators light to show when an Optical Digital Input has been selected. AVR120 AVR120 harman/kardon www.freeservicemanuals.infoIts Free www.freeservicemanuals.info RadioFans.CN 9 REAR PANEL CONNECTIONS Rear Panel Connections AC INPUT 120V/60HZ A TAPE FRONT SPKRS (8) RIGHTLEFT CENTER SPKR (8) ANTENNA DIGITAL IN DIGITAL OUT VID 3VID 3 VID 2 VID 2 OPT OPT COAX COAX VID 1VID 1 DVDDVD CD MON. OUT IN OUT AM GND FM 75 1 2 1 2 IN OUT IN OUT L RL R VIDEO S-VIDEO + + SURR. SPKRS (8) SERIAL NO. RIGHTLEFT fi fl SUBWOOFER b cd ef g a MODEL NO. AVR 120 Tape Inputs Tape Outputs Video 1 Audio Inputs AM Antenna Video 1 Audio Outputs DVD Audio Inputs FM Antenna CD Inputs Optical Digital Output Coaxial Digital Output DVD Video Inputs Video Monitor Outputs Subwoofer Output Front Speaker Outputs fi Surround Speaker Outputs fl Switched AC Accessory Outlet Unswitched AC Accessory Outlet AC Power Cord Video 1 Video Outputs a Video 1 Video Inputs b Video 2 Video Inputs c Video 3 Video Inputs d Optical Digital Inputs e Coaxial Digital Inputs f Video 3 Audio Inputs g Video 2 Audio Inputs AVR120 AVR120 harman/kardon www.freeservicemanuals.infoIts Free www.freeservicemanuals.info RadioFans.CN 10 REAR PANEL CONNECTIONS Rear Panel Connections Tape Inputs: Connect these jacks to the PLAY/OUT jacks of an audio recorder. Tape Outputs: Connect these jacks to the RECORD/INPUT jacks of an audio recorder. Video 1 Audio Inputs: Connect these jacks to the PLAY/OUT audio jacks on a VCR or other video source. AMAntenna: Connect theAM loop antenna supplied with the receiver to these terminals.If an externalAM antenna is used,make connections to the AM and GND terminals in accordance with the instructions supplied with the antenna. Video 1 Audio Outputs: Connect these jacks to the RECORD/INPUT audio jacks on a VCR. DVD Audio Inputs: Connect these jacks to the analog audio jacks on a DVD or other video source. NOTE: The default setting for the audio input associated with DVD is the Coaxial Digital Input 1 e. If you connect the audio outputs of a DVD player to these jacks, change the input setting as shown on page 20. FM Antenna: Connect the supplied indoor or an optional external FM antenna to this terminal. CD Inputs: Connect these jacks to the out- put of a compact disc player or CD changer. Optical Digital Output: Connect this jack to the matching digital input connector on a digital recorder such as CD-R or MiniDisc recorder. Coaxial Digital Output: Connect this jack to the matching digital input connector on a digital recorder such as a CD-R or MiniDisc recorder. DVD Video Inputs: Connect these jacks to the composite or S-Video output jacks on a DVD or other video source. Video Monitor Outputs: Connect this jack to the composite or S-Video input of a TV monitor or video projector to view the output of any standard video source selected by the receivers video switcher. Subwoofer Output: Connect this jack to the l