HarmanKardon-AVR245-avr-sm维修电路原理图.pdf

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1、 harman/kardon AVR245 AVR245 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.8 REMOTE CONTROL FUNCTIONS.11 CONNECTIONS/INSTALLATION.14 OPERATION.25 TROUBLESHOOTING GUIDE.32 REMOT

2、E & PROCESSOR RESETS.33 DISASSEMBLY.34 UNIT EXPLODED VIEW.38 EXPLODED VIEW PARTS LIST39 AMP BIAS ADJUSTMENT.40 BLOCK DIAGRAM.41 PCB DRAWINGS42 ELECTRICAL PARTS LIST.53 SEMICONDUCTOR PINOUTS.97 SCHEMATICS220 WIRING DIAGRAM228 harman/kardon, Inc. 250 Crossways Park Dr. Woodbury, New York 11797 Rev 0 1

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 :AVR245 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 above0.5mAEarthground3AVR245 h ha ar rmmanan/k/karard do on n The BridgeTMHKP1477AVR245om 8/29/06 5:47 PM Page 5858AVR 245 TECHNICAL SPECIFICATIONSAudio SectionStereo Mode Continuous Average Power (FTC)65 Watts per channel, 20

16、Hz20kHz, 0.07% THD, both channels driven into 8 ohmsFive-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

17、2000V (MIL STD 883 method 3015); MM 200VDESCRIPTIONThe 74LCX32 is a low voltage CMOS QUAD2-INPUT OR GATE fabricated with sub-micronsilicon gate and double-layer metal wiring C2MOStechnology. It is ideal for low power and highspeed 3.3V applications; it can be interfaced to 5Vsignal environment for i

18、nputs.It has same speed performance at 3.3V than 5VAC/ACT family, combined with a lower powerconsumption.All inputs and outputs are equipped withprotection circuits against static discharge, givingthem 2KV ESD immunity and transient excessvoltage.74LCX32LOW VOLTAGE CMOS QUAD 2-INPUT OR GATEWITH 5V T

19、OLERANT INPUTS Figure 1: Pin Connection And IEC Logic SymbolsTable 1: Order Codes PACKAGET & RSOP74LCX32MTRTSSOP74LCX32TTRTSSOPSOPRev. 6115AVR245 h ha ar rmmanan/k/karardondon GENERAL DESCRIPTION The AK4384 offers the perfect mix for cost and performance based audio systems. Using AKMs multi bit arc

20、hitecture for its modulator the AK4384 delivers a wide dynamic range while preserving linearity for improved THD+N performance. The AK4384 integrates a combination of SCF and CTF filters increasing performance for systems with excessive clock jitter. The 24 Bit word length and 192kHz sampling rate m

21、ake this part ideal for a wide range of applications including DVD-Audio. The AK4384 is offered in a space saving 16pin TSSOP package. FEATURES ? Sampling Rate Ranging from 8kHz to 192kHz ? 128 times Oversampling (Normal Speed Mode) ? 64 times Oversampling (Double Speed Mode) ? 32 times Oversampling

22、 (Quad Speed Mode) ? 24-Bit 8 times FIR Digital Filter ? SCF with High Tolerance to Clock Jitter ? 2nd order Analog LPF ? Single Ended Output Buffer ? Digital de-emphasis for 32k, 44.1k and 48kHz sampling ? Soft mute ? Digital Attenuator (Linear 256 steps) ? I/F format: 24-Bit MSB justified, 24/20/1

23、6-Bit LSB justified or I2S ? Master clock: 256fs, 384fs, 512fs, 768fs or 1152fs (Normal Speed Mode) 128fs, 192fs, 256fs or 384fs (Double Speed Mode) 128fs, 192fs (Quad Speed Mode) ? THD+N: -94dB ? Dynamic Range: 106dB ? Power supply: 4.5 to 5.5V ? Very Small Package: 16pin TSSOP (6.4mm x 5.0mm) LRCK

24、BICKSDTI Audio Data Interface MCLK PDN Modulator AOUTL 8X Interpolator SCF LPF AOUTR VDD VSS VCOM De-emphasis Control P/S P Interface Clock Divider SMUTE/CSN ACKS/CCLKDIF0/CDTI Modulator 8X Interpolator DZFR DZFL SCF LPF ATT ATT 106dB 192kHz 24-Bit 2ch DAC AK4384116AVR245 harman/kardonharman/kardon

25、ASAHI KASEI AK4384 MS0176-E-00 2002/09 - 2 - ? Ordering Guide AK4384VT -40 +85C 16pin TSSOP (0.65mm pitch) AKD4384 Evaluation Board for AK4384 ? Pin Layout 1 MCLK LRCK BICK SMUTE/CSN ACKS/CCLK DIF0/CDTI Top View 2 3 4 5 6 7 8 DZFL DZFR VSS VDD VCOM AOUTL AOUTR P/S 16 15 14 13 12 11 10 9 PDN SDTI PIN

26、/FUNCTION No. Pin Name I/O Function 1 MCLK I Master Clock Input Pin An external TTL clock should be input on this pin. 2 BICK I Audio Serial Data Clock Pin 3 SDTI I Audio Serial Data Input Pin 4 LRCK I L/R Clock Pin 5 PDN I Power-Down Mode Pin When at “L”, the AK4384 is in the power-down mode and is

27、 held in reset. The AK4384 should always be reset upon power-up. SMUTE I Soft Mute Pin in parallel mode “H”: Enable, “L”: Disable 6 CSN I Chip Select Pin in serial mode ACKS I Auto Setting Mode Pin in parallel mode “L”: Manual Setting Mode, “H”: Auto Setting Mode 7 CCLK I Control Data Clock Pin in s

28、erial mode DIF0 I Audio Data Interface Format Pin in parallel mode 8 CDTI I Control Data Input Pin in serial mode 9 P/S I Parallel/Serial Select Pin (Internal pull-up pin) “L”: Serial control mode, “H”: Parallel control mode 10 AOUTR O Rch Analog Output Pin 11 AOUTL O Lch Analog Output Pin 12 VCOM O

29、 Common Voltage Pin, VDD/2 Normally connected to VSS with a 0.1F ceramic capacitor in parallel with a 10F electrolytic cap. 13 VSS - Ground Pin 14 VDD - Power Supply Pin 15 DZFR O Rch Data Zero Input Detect Pin 16 DZFL O Lch Data Zero Input Detect Pin Note: All input pins except pull-up pin should n

30、ot be left floating. 117AVR245 harman/kardonharman/kardon L7900SERIESNEGATIVE VOLTAGE REGULATORS November 1999IOUTPUT CURRENT UP TO1.5 AIOUTPUT VOLTAGESOF -5;-5.2; -6;-8; -9;-12;-15; -18; -20; -22;-24VITHERMAL OVERLOADPROTECTIONISHORTCIRCUIT PROTECTIONIOUTPUT TRANSITION SOAPROTECTIONDESCRIPTIONThe L

31、7900 series ofthree-terminal negativeregulators is available in TO-220, ISOWATT220TO-3 and D2PAK packages and several fixedoutput voltages, making it useful in a wide rangeof applications.Theseregulators can provide localon-card regulation, eliminating the distributionproblems associated with single

32、 point regulation;furthermore, having the same voltage option asthe L7800 positive standard series, they areparticularly suited for split power supplies. Inaddition, the -5.2V is also available for ECLsystem.If adequate heat sinking is provided,theycandeliverover1.5Aoutputcurrent.Although designed p

33、rimarily as fixed voltageregulators, these devices can be used withexternalcomponentstoobtainadjustablevoltagesand currents.12TO-3TO-220ISOWATT22012313D2PAKSCHEMATIC DIAGRAM1/13118AVR245 h ha ar rmmanan/k/karard do on n CONNECTION DIAGRAM AND ORDERING NUMBERS (top view)TO-220 & ISOWATT220TO-3D2PAKTH

34、ERMALDATASymbolParameterD2PAKTO-220ISOWATT220TO-3UnitRthj-caseRthj-ambThermal Resistance Junction-caseMaxThermal Resistance Junction-ambientMax362.5350460435oC/WoC/WTypeTO-220D2PAK (*)ISOWATT220TO-3Output VoltageL7905CL7952CL7906CL7908CL7912CL7915CL7918CL7920CL7922CL7924CL7905CVL7952CVL7906CVL7908CV

35、L7912CVL7915CVL7918CVL7920CVL7922CVL7924CVL7905CD2TL7952CD2TL7906CD2TL7908CD2TL7912CD2TL7915CD2TL7918CD2TL7920CD2TL7922CD2TL7924CD2TL7905CPL7906CPL7908CPL7912CPL7915CPL7918CPL7920CPL7924CPL7905CTL7952CTL7906CTL7908CTL7912CTL7915CTL7918CTL7920CTL7922CTL7924CT-5V-5.2V-6V-8V-12V-15V-18V-20V-22V-24V(*)

36、AVAILABLE IN TAPE AND REEL WITH ”-TR” SUFFIXABSOLUTE MAXIMUM RATINGSSymbolParameterValueUnitViDC InputVoltage (for VO= 5to 18V)(forVO= 20,24V)-35-40VVIoOutputCurrentInternally limitedPtotPower DissipationInternally limitedTopOperating Junction TemperatureRange0 to 150oCTstgStorageTemperature Range-

37、65 to 150oCAPPLICATION CIRCUITL79002/13119AVR245 h ha ar rmmanan/k/karard do on n 1A LOWDROP OUT VOLTAGE REGULATOR (ADJUSTABLE & FIXED) LM1117FEATURES1A LOWDROP OUT VOLTAGE REGULATOR (ADJUSTABLE & FIXED) LM1117FEATURES Output Current up to 1 A Low Dropout Voltage ( 700mV at 1A Output Current )Low Dr

38、opout Voltage ( 700mV at 1A Output Current ) Three Terminal Adjustable or Fixed 1.5V, 1.8V, 2.5V, 2.85V, 3.0V, 3.3V, 5.0V 2.85V Device for SCSI-II Active Terminator 0.04% Line Regulaion, 0.1% Load Regulation 0.04% Line Regulaion, 0.1% Load Regulation Very Low Quiescent Current Internal Current andTe

39、rminal Limit Logic-Controlled Electronics Shutdown Surface Mount Package SOT-223 & TO-263 (D2-Pack) 100% Thermal Limit Burn-InAPPLICATIONAPPLICATION Active SCSI Terminators Portable/Plan Top/Notebook Computers High Efficiency Linear Regulators SMPS Post RegulatorsORDERING INFORMATIONORDERING INFORMA

40、TION Mother B/D Clock Supplies Package Disk Drives Battery ChargersDESCRIPTIONDESCRIPTION(X=Output Voltage=1.5V, 1.8V, 2.5V, 2.85V, 3.0V, 3.3V, 5.0V, Adjustable=AD)The LM1117 is a low power positive-voltage regulator designed to meet 1A output current and complywith SCSI-II specifications with a fix

41、ed output voltage of 2.85V. This device is an excellent choice for usein battery-powered applications, as active terminators for the SCSI bus, and portable computers.The LM1117 features very low quiescent current and very low dropout voltage of 700mV at a full loadlow dropout voltage of 700mV at a f

42、ull load andlower as output current decreases. LM1117 is available as an adjustable or fixed 1.5V, 1.8V, 2.5V, 2.85V, 3.0V, 3.3V, and 5.0V output voltages.The LM1117 is offered in a 3-pin surface mount package SOT-223 & TO-263. The output capacitor of10 or larger is needed for output stability of LM

43、1117 as required by most of the other regulator circuits.ABSOLUTE MAXIMUM RATINGSHTCABSOLUTE MAXIMUM RATINGSHTC LM1117T LM1117T-XX TO-263 (D2) Device (Marking) SOT-223 LM1117S LM1117S-XXMIN.UNITV07125-65150Lead Temperature (Soldering, 5 Seconds) TSOL1CHARACTERISTICDC Input VoltageOperating Junction

44、Temperature RangeSYMBOLVINTOPRStorage Temperature RangeTSTGMAX.260 1 2 3SOT-223 PKG (FRONT VIEW)SOT-223 PKG (FRONT VIEW)PIN FUNCTION1. Adj/Gnd2. Vout3. VinTO-263 (D2 PKG, FRONT VIEW)TO-263 (D2 PKG, FRONT VIEW)PIN FUNCTION 1. Adj/Gnd 2. Vout 3. Vin1 2 3120AVR245 h ha ar rmmanan/k/karard do on n 121AV

45、R245 harman/kardonharman/kardon NJM2391 PIN FUNCTION 1.VIN 2.GND 3.VOUT NJM2391DL1 LOW DROPOUT VOLTAGE REGULATOR ? GENERAL DESCRIPTION ? PACKAGE OUTLINE The NJM2391 is low dropout voltage regulators featuring high precision voltage. It is suitable for Notebook PCs, PC cards and hard disks where 3.3V

46、 need to be generated from 5V supply. A small TO-252 package is adopted for the space saving. ? FEATURES ?Output Current Io(max.)=1A ?High Precision Output Voltage Vo1% ?Low Dropout Voltage VI-O =1.1V typ. At Io=1A ?Internal Excessive Voltage Protection Circuit ?Internal Short Circuit Current Limit

47、?Internal Thermal Overload Protection ?Bipolar Technology ?Package Outline TO-252 ? PIN CONFIGURATION ? ABSOLUTE MAXIMUM RATINGS (Ta=25C) PARAMETER SYMBOL RATINGS UNIT Input Voltage V+ +10 V Power Dissipation PD TO-2528 (Tc=25C)0.8(Ta25C)W Operating Temperature Topr 40 +85 C Storage Temperature Tstg

48、 50 +125 C ? OUTPUT VOLTAGE RANK LIST Device Name VOUT NJM2391DL1-25 2.5V NJM2391DL1-26 2.6V NJM2391DL1-28 2.85V NJM2391DL1-03 3.0V NJM2391DL1-33 3.3V NJM2391DL1-35 3.5V NJM2391DL1-05 5.0V NJM2391DL1 312122AVR245 h ha ar rmmanan/k/karard do on n 123AVR245 harman/kardonharman/kardon ST202EST232E 15KV

49、 ESD PROTECTED5V RS-232 TRANSCEIVER April 2000IESDPROTECTIONFOR RS-232I/OPINS: 15KVHUMAN BODYMODELIGUARANTEED120kbpsDATERATEIGUARANTEEDSLEWRATERANGE3 to30V/sIOPERATEFROMASINGLE5VPOWERSUPPLYDESCRIPTIONThe ST202E/ST232E are a 2 driver 2 receiverdevicesdesignedforRS-232andV.28communications inharsh env

50、iroments.Eachtransmitter output and receiver input is protectedagainst 15KV electrostatic discharge (ESD)shocks. The drivers meet all EIA/TIA-232E andCCITT V.28 specifications at data rates up to120Kbps, when loaded in accordance with theEIA/TIA-232Especification.TheST202E/232E useasingle 5Vsupplyvo