Marantz-SR4120-avr-sm 维修电路原理图.pdf

ServiceManualPlease use this service manual with referring to the user guide (D.F.U) without fail.309W855010 AOFirst Issue:2000.10SR4120/U1BReceiver SR4120Printed in JapanTABLE OF CONTENTS1.TECHNICAL SPECIFICATION .12.WIRING DIAGRAM .23.BLOCK DIAGRAM .34.SCHEMATIC DIAGRAM AND PARTS LOCATION .55.MICROPROCESSOR AND IC DATA .166.ADJUSTMENT PROCEDURE .187.EXPLODED VIEW AND PARTS LIST.218.ELECTRICAL PARTS LIST.23AUXTAPE MONIFM/AMPHONOCDMINMAXVOLUMEUPTUNING/PRESETDOWNRECEIVER SR4120RLTREBLEBARANCE-+BASS-+FM MODEMEMOP.SCANF/P21SPEAKERSON/STANDBYSTANDBYPOWERPHONESSR4120SR4120RadioFans.CN 收音机爱 好者资料库MARANTZ DESIGN AND SERVICEUsing superior design and selected high grade components, MARANTZ company has created the ultimate in stereo sound.Only original MARANTZ parts can insure that your MARANTZ product will continue to perform to the specifications for whichit is famous.Parts for your MARANTZ equipment are generally available to our National Marantz Subsidiary or Agent.ORDERING PARTS :Parts can be ordered either by mail or by Fax. In both cases, the correct part number has to be specified.The following information must be supplied to eliminate delays in processing your order :1. Complete address2. Complete part numbers and quantities required3. Description of parts4. Model number for which part is required5. Way of shipment6. Signature : any order form or Fax. must be signed, otherwise such part order will be considered as null and void.SHOCK, FIRE HAZARD SERVICE TEST :CAUTION : After servicing this appliance and prior to returning to customer, measure the resistance between either primary ACcord connector pins ( with unit NOT connected to AC mains and its Power switch ON ), and the face or Front Panel of product andcontrols and chassis bottom.Any resistance measurement less than 1 Megohms should cause unit to be repaired or corrected before AC power is applied, andverified before it is return to the user/customer.Ref. UL Standard No. 1492.In case of difficulties, do not hesitate to contact the TechnicalDepartment at above mentioned address.991207A.OUSAUSAMARANTZ AMERICA, INCMARANTZ AMERICA, INC.440 MEDINAH ROADROSELLE, ILLINOIS 60172USAPHONE : 630 - 307 - 3100FAX : 630 - 307 - 2687 BRAZILBRAZILPHILIP DA AMAZONIA IND. ELET. ITDAPHILIP DA AMAZONIA IND. ELET. ITDACENTRO DE INFORMACOES AOCEP 04698-970SAO PAULO, SP, BRAZILPHONE : 0800 - 123123(Discagem Direta Gratuita)FAX : +55 11 534. 8988JAPANJAPAN Technical MARANTZ JAPAN, INC.MARANTZ JAPAN, INC.35- 1, 7- CHOME, SAGAMIONOSAGAMIHARA - SHI, KANAGAWAJAPAN 228-8505PHONE : +81 42 748 1013FAX : +81 42 741 9190EUROPE / TRADING EUROPE / TRADING MARANTZ EUROPE B.V.MARANTZ EUROPE B.V.P.O.BOX 80002, BUILDING SFF25600 JB EINDHOVENTHE NETHERLANDSPHONE : +31 - 40 - 2732241FAX : +31 - 40 - 2735578CANADACANADALENBROOK INDUSTRIES LIMITEDLENBROOK INDUSTRIES LIMITED633 GRANITE COURT, PICKERING, ONTARIO L1W 3K1CANADAPHONE : 905 - 831 - 6333FAX : 905 - 831 - 6936AUSTRALIAAUSTRALIAJAMO AUSTRALIA PTY LTDJAMO AUSTRALIA PTY LTD1 EXPO COURT, P.O. BOX 350 MT. WAVERLEY VIC 3149AUSTRALIAPHONE : +61 - 3 - 9543 - 1522FAX : +61 - 3 - 9543 - 3677THAILANDTHAILANDMRZ STANDARD CO., LTDMRZ STANDARD CO., LTD746 - 754 MAHACHAI ROAD.,WANGBURAPAPIROM, PHRANAKORN, BANGKOK, 10200 THAILANDPHONE : +66 - 2 - 222 - 9181FAX : +66 - 2 - 224 - 6795TAIWANTAIWANPAI- YUING CO., LTD.PAI- YUING CO., LTD.6 TH FL NO, 148 SUNG KIANG ROAD, TAIPEI, 10429, TAIWAN R.O.C.PHONE : +886 - 2 - 25221304FAX : +886 - 2 - 25630415MALAYSIAMALAYSIAWO KEE HONG ELECTRONICS SDN. BHD.WO KEE HONG ELECTRONICS SDN. BHD.SUITE 8.1, LEVEL 8, MENARA GENESIS,NO. 33, JALAN SULTAN ISMAIL,50250 KUALA LUMPUR, MALAYSIAPHONE : +60 3 - 2457677FAX : +60 3 - 2458180 AMERICASAMERICASSUPERSCOPE TECHNOLOGIES, INC.SUPERSCOPE TECHNOLOGIES, INC.MARANTZ PROFESSIONAL PRODUCTS2640 WHITE OAK CIRCLE, SUITE AAURORA, ILLINOIS 60504 USAPHONE : 630 - 820 - 4800FAX : 630 - 820 - 8103 AUSTRALIAAUSTRALIATECHNICAL AUDIO GROUP PTY, LTDTECHNICAL AUDIO GROUP PTY, LTD558 DARLING STREET,BALMAIN, NSW 2041,AUSTRALIAPHONE : 61 - 2 - 9810 - 5300FAX : 61 - 2 - 9810 - 5355KOREAKOREAMK ENTERPRISES LTD.MK ENTERPRISES LTD.ROOM 604/605, ELECTRO-OFFICETEL, 16-58, 3GA, HANGANG-RO, YONGSAN-KU, SEOULKOREAPHONE : +822 - 3232 - 155FAX : +822 - 3232 - 154SINGAPORESINGAPOREWO KEE HONG (S) PTE LTDWO KEE HONG (S) PTE LTDWO KEE HONG CENTRE NO.23, LORONG 8, TOA PAYOH SINGAPORE 319257PHONE : +65 2544555FAX : +65 2502213NEW ZEALANDNEW ZEALANDWILDASH AUDIO SYSTEMS NZ WILDASH AUDIO SYSTEMS NZ 14 MALVERN ROAD MT ALBERTAUCKLAND NEW ZEALANDPHONE : +64 - 9 - 8451958FAX : +64 - 9 - 8463554RadioFans.CN 收音机爱 好者资料库11. TECHNICAL SPECIFICATIONSFM TUNER SECTIONFREQUENCY RANGE.87.5 - 108.0 MHzUSABLE SENSITIVITY . IHF 2.0 V/11.3 dBfSIGNAL TO NOISE RATIO . MONO/STEREO 70/65 dBDISTORTION . MONO/STEREO 0.3/0.5 %STEREO SEPARATION.1 kHz 32 dBA.C.S. 400 kHz 50 dBIMAGE REJECTION .98 MHz 40 dBTUNER OUTPUT LEVEL. 1 kHz, 75 kHz Dev 600 mVAM TUNER SECTIONFREQUENCY RANGE. 520 - 1710 kHzUSABLE SENSITIVITY . LOOP 500 V/mSIGNAL TO NOISE RATIO . 40 dBDISTORTION .1 kHz, 30 % Mod. 1.0 %SELECTIVITY . 10 kHz 25 dBAUDIO SECTIONRATED POWER. 20 Hz - 20 kHz 8 ohms 60 W/ChTHD.20 Hz - 20 kHz 8 ohms 0.09 %INPUT SENSITIVITY/IMPEDANCELINEAR . 200 mV/47k ohmsSIGNAL TO NOISE RATIO (IHF-A)LINEAR . 95 dBOTHERSPOWER SUPPLY.AC 120V 60 HzPOWER CONSUMPTION. 1.8 ADIMENSIONS (MAX)WIDTH . 17 - 5/16 inches (440 mm)HEIGHT. 5 - 3/8 inches (137 mm)DEPTH . 15 - 7/16 inches (392 mm)WEIGHT.16.5 lbs(7.5kg)Specifications subject to change without prior notice.22. WIRING DIAGRAM343. BLOCK DIAGRAM564. SCHEMATIC DIAGRAM AND PARTS LOCATIONSMAIN SCHEMATIC DIAGRAM78MAIN BOARDQ329 Q381 Q382 Q385 Q384IC51 Q501 Q411 Q412Q315 Q309 Q307 Q311Q394Q303 Q396Q305 Q319 Q313 Q330Q321 Q325Q327Q323Q317 Q318 Q322 Q326Q328Q324Q202 Q201 IC22 IC23 Q312Q304 Q308 Q314 Q316 Q310 Q320IC21 Q413 Q415 Q414910FRONT SCHEMATIC DIAGRAM1112FRONT BOARDQ909 Q913Q905 Q910 Q908Q903 Q914 Q902IC02 Q915IC61 IC91Q911 Q905Q912Q904Q901 Q9071314TUNER SCHEMATIC DIAGRAM15TUNER BOARDQ14IC2Q16 Q15 Q17IC1Q12Q11IC5IC4 Q13ANAM1313AFIP SEG-20FIP SEG-19FIP SEG-18FIP SEG-17FIP SEG-16FIP SEG-15FIP SEG-14FIP SEG-13FIP SEG-12FIP SEG-11FIP SEG-10FIP SEG-9FIP SEG-8FIP SEG-7FIP SEG-6FIP SEG-5FIP SEG-4FIP SEG-3FIP SEG-2FIP SEG-1FIP QRID-1FIP QRID-2FIP QRID-3FIP QRID-4FIP QRID-5FIP QRID-6FIP QRID-7FIP QRID-8FIP QRID-9NC-27VNCCLOCKDATASTBNCNCPLL-STPLL-D/IPLL-CLOCKPLL-D/ONCKEY INGNDNCNCNCNCVOL-UPVOL-DOWNTUNING-UPTUNING-DOWNNCNCFUNCTION MUTENCFIP SEG-21FIP SEG-22AREA OPTIONNCRDS ON OPTIONNCNCSTANDBY OPTIONMODEL OPTIONNCPOWER ON/OFFSTBY LEDNCNCNCNCNCNCVDDVSSBACK UPVDDVREFVASSVSSTUNED-INSTEREO-INRDS CLOCKRDS DATAPROTECT -INSP-2SP-1REMOTE INREMOTE INREMOTE OUTRESETX-OUTX-IN165. MICROPROCESSOR DESCRIPTIONS1. Block Diagram2. Pin Configuration173. Pin FunctionsPIN NO. SYMBOL DESCRIPTION 1VDD+5V POWER SUPPLY2,4,5N.CNOT USED 3FUNCTION MUTEMUTING WHEN CHANGE THE FUNCTION BUTTON 6TUNING DOWNINPUT OF ENCODER FOR TUNING DOWN 7TUNING UPINPUT ENCODER TUNING UP 8VOLUME DOWNOUTPUT TO CONTROL MOTOR VOLUME DOWN 9VOLUME UPOUTPUT TO CONTROL MOTOR VOLUME UP10,11N.CNOT USED 12RDS DATATUNER RDS DATA OUTPUT 13RDS CLOCKTUNER RDS CLOCK OUTPUT 14STEREO-ININPUT FOR DETECTING FM STEREO, ACTIVE LOW (0V) 15TUNED-ININPUT FOR DETECTING THE STATION IS DURING TUNING WHEN THESTATION IS DETECTED, ACTIVE LOW (0V) 16PROTECT-INSIGNAL INPUT FOR PROTECTION, ACTIVE LOW (0V)1721KEY-INDATA INPUT FOR KEY SCAN22,27VSSGROUND 23VASSGROUND 24VREFVOLTAGE FOR REFERENCE 25VDD+5V POWER SUPPLY 26BACK UPIF PORT IS LOW, POWER IS OFFED AND LAST MOMERY IS ACTIVATED.28,29N.CNOT USED 30GNDGROUND 31X-ININPUT FOR CRYSTAL OSCILATOR 32X-OUTOUTPUT FOR CRYSTAL OSCILATOR 33RESETOUTPUT FOR SETTING CPU, ACTIVE LOW (0V) 34REMOTE-OUTOUTPUT FOR REMOTE CONTROL DATA35,36REMOTE-ININPUT FOR REMOTE CONTROL DATA 37SP-1SWITING THE SPEAKER SYSTEM-1 OUTPUT 38SP-2SWITING THE SPEAKER SYSTEM-2 OUTPUT 39N.CNOT USED 40PLL D/OTUNER PLL IC (LC72131M) DATA-OUT PORT 41PLL CLOCKTUNER PLL IC (LC72131M) CLOCK PORT 42PLL D/ITUNER PLL IC (LC72131M) DATA-IN PORT 43PLL STTUNER PLL IC (LC72131M) CHIP ENABLE PORT44,45N.CNOT USED 46STBSTROBE PORT FOR FUNCTION SWITCHING IC (LC78211) 47DATADATA PORT FOR FUNCTION SWITCHING IC (LC78211) 48CLOCKCLOCK PORT FOR FUNCTION SWITCHING IC (LC78211)49,51NCNOT USED 50-27V-27V POWER SUPPLY FOR FIP5260FIP GRIDPORTS FOR FIP GRID6182FIP SEGMENTPORTS FOR FIP SEGMENT 83OPTIONAREA OPTION (“H” IS EUROPE, “L” IS USA) 84OPTIONAREA OPTION (“L” IS EUROPE, “H” IS USA) 85OPTIONAREA OPTION (“H” IS EUROPE, USA “L” IS EXCEPT) 86N.CNOT USED 87OPTIONRDS OPTION (“L” IS RDS ON, “H” IS RDS OFF)8890N.CNOT USED 91OPTIONSTANDBY OPTION (“L” IS STANDBY, “H” IS POWER ON DIRECTLY) 92OPTIONMODEL OPTION (“L” IS RECEIVER, “H” IS AMP) 93POWER ON/OFFWHEN THE POWER IS HIGH (5V), UNIT IS OPERATE 94STANDBY LEDINDICATING DURING THE STANDBY MODE, ACTIVE HIGH (5V)95100N.CNOT USED18 PIN20 PIN21 PIN19TAPE-MONIAUXFM/AMCDPHONO PIN17SEARCHDISPLAYPTY SELECT PIN18TUN/CH MODEP. SCANMEMORYFM MODETUNED-DN TUNED-UP I/O1 kohm1.5 kohm1.8 kohm2.7 kohm3.3 kohmKey MatrixIMPORTANT1. Check power-source voltage.2. Set the function switch to band aligned.3. Keep the signal input as low as possible to adjust accurately.4. Modulation and Modulation frequency.6.MEASUREMENTS AND ADJUSTMENTSALIGNMENT INSTRUCTIONSEquipment needed:AM Standard Signal GeneratorFM Standard Signal GeneratorOscilloscopeVTVM (AC, DC)AM Test Loop Antenna (AM Adjustment)FM Dummy Antenna (FM Adjustment)Stereo Signal Generator (RDS IN : EUROPE ONLY)Frequency CounterDistortion AnalyserTUNER ADJUSTMENT POINTModulationfrequency30 %MONO: 75 kHz DEV. (100 %)STEREO: L=R (67.5 kHz), PILOT (7.5 kHz)ItemBandFM 1 kHzModulationAM400 Hz(4)FM MONO DISTORTION ADJUSTMENTSignal Generator -Connect to FM Ant. (FM 75 ohm) throughthe dummy.DC Voltmeter - Connect to TP2(+), TP3(-) through the chokecoil (100mH)Distortion Meter -Connect to output L or RBand Step Frequency Adjust forAdjustment1100.50 MHz DC Volt 0VT112100.50 MHz Minimum T.H.DT123Repeat steps 1 and 2 several timesFM(3)FM RF ADJUSTMENTSignal Generator -Connect to FM Ant. (FM 75 ohm) throughthe dummy.Adjust for indication of VTVM of the wave form of scope to bemaximum.(7)AM, FM AUTO STOP LEVEL ADJUSTMENTSignal Generator -Connect to FM Ant. (FM 75 ohm) through the dummy.-Connect to the AM Ant. Coil through the loop antenna.BandStepFrequency and Level Adjust forAdjustment1100.50 MHz, 30 dBDisplay offVR12100.50 MHz, 30 dBDisplay onVR11 990 kHz, 80 dBDisplay offVR22 990 kHz, 80 dBDisplay onVR2FMAMTUNEDTUNEDTUNEDTUNED(1)FM, AM TRACKING VOLTAGE ADJUSTMENTAM, FM DC Voltmeter - Connect to test point TP1 and GND(2)AM RF ADJUSTMENTSignal Generator -Connect to the AM Ant. Coil through theloop antenna.Adjust for indication of VTVM of the wave form of scope to bemaximum.(5)FM MPX VCO ADJUSTMENTSignal Generator -Connect to FM Ant. (FM 75 ohm) through the dummy.190.10 MHzMaximum sens. L2, L5, L6, T12Repeat step 1 several timesBand Step Frequency Adjust forAdjustmentFM(6)FM STEREO SEPARATION ADJUSTMENTSignal Generator -Connect to FM Ant. (FM 75 ohm) through the dummy.BandFrequencySSG Condition Adjust forAdjustmentModulation - 0 %Modulation Frequency - 0 HzOutput Level -66 dBFM100.50 MHz19.00 kHz + 30 HzVR3BandFrequencySSG Condition Adjust forAdjustmentModulation - L or R onlyModulation Frequency - 1 kHzOutput Level -66 dBFM100.50 MHzDifferent of R or Lmust be maximumVR4NOTE:In case of adjusting the stereo separation of input isL(or R) channel, R(or L) channel must be maximum.Band Step Frequency Adjust forAdjustment1 610 kHzMaximum sens.L12, T1321510 kHzMaximum sens. CT13Repeat steps 1 and 2 several timesAMNo Band FrequencyAdjust forAdjustment 1FM87.50 MHz1.6 VL7AM 522 kHz1.0 VL13AM 530 kHz1.0 VL132192021227. EXPLODED VIEW AND PARTS LISTPOS.NOVERS.COLORPART NO.(PCS)DESCRIPTIONPART NO.(MJI)1WINDOW FL DISPLAY309W1580102BADGE MARANTZ185J2510123KNOB TUNING/PRESET285W1540104KNOB POWER285W2700105KNOB BALANCE274W1540306KNOB VOLUME309W1540107PANEL FRONT309W2480108INDICATOR MUTE274W3550109KNOB BAND282W27004010KNOB TACT309W27001011COVER SHIELDnsp12FL DISPLAY*HQ300350R13BRACKET FLTnsp14FRONT PCB ASSYnsp15FOOT243W05701016RUBBER CUSHIONnsp17CHASSIS BOTTOMnsp18RUBBERnsp19MAIN TRANSFORMER*TS001230R20HOLDER PCBnsp21HEAT SINKnsp22BRACKET PCBnsp23MAIN PCB ASSYnsp24TUNER PCB ASSYnsp25PANEL REARnsp26TERMINAL GROUNDnsp27BUSHING MAINS CORDnsp28MAINS CORD*YC000500RS1SCREWnspS2SCREWnspS3SCREWnspS4SCREWnspS5SCREWnspS6SCREWnspS7SCREWnspS8SCREWnspS9SCREWnspS10SCREW TRANSnspASSIGNMENT OF COMMON PARTS CODES.RESISTORSR1) GD05 x x x 140, Carbon film fixed resistor, 5% 1/4WR2) GD05 x x x 160, Carbon film fixed resistor, 5% 1/6W1 Resistance valueExamples1 Resistance value0.1. 00110.1001k.102100k. 1040.5. 00518.1802.7k.272680k. 6841. 010100.10110k.1031M. 1056.8. 068 390.39122k.2234.7M. 475Note : Please distinguish 1/4W from 1/6W by the shape of partsused actually.CAPACITORSC : CERAMIC CAP.3) DD1 x x x x 370, Ceramic capacitorDisc typeTemp.coeff. P350N1000, 50V3 Capacity value2 Tolerance Examples2 Tolerance (Capacity deviation) 0.25 pF .0 0.5 pF .1 5 % .5Tolerance of COMMON PARTS handled here are as follows :0.5 pF - 5 pF . 0.25 pF 6 pF - 10 pF . 0.5 pF 12 pF - 560 pF . 5 %3 Capacity value0.5 pF . 0053 pF. 030100 pF. 1011 pF . 01010 pF. 100220 pF. 2211.5 pF . 01547 pF. 470560 pF. 561C : CERAMIC CAP.4) DK16 x x x 300, High dielectric constant ceramiccapacitorDisc typeTemp.chara. 2B4, 50V4 Capacity value Examples4 Capacity value100 pF .1011000 pF . 10210000 pF . 103470 pF .4712200 pF . 222C: 5) ELECTROLY CAP.( ), 6)FILM CAP ( )5) EA x x x x x x 10, Electrolytic capacitor One-way lead type,Tolerance 20%6 Working voltage5 Capacity value Examples5 Capacity value0.1F . 1044.7F . 475 100F .1070.33F . 334 10F . 106330F .3371F . 10522F . 2261100F .1182200F . 2286 Working voltage6.3 V .00625 V . 02510 V .01035 V . 035 16 V .01650 V . 0506) DF15 x x x 350Plastic film capacitorDF15 x x x 310 One-way type, Mylar 5% 50VDF16 x x x 310Plastic film capacitor One-way type, Mylar 10% 50V 7 Capacity value Examples7 Capacity value0.001F (1000 pF) . 102 0.1 F.1040.0018F. 1820.56 F.5640.01F. 103 1 F.1050.015F. 1531) The above CODES(R,R,C,Cand C) are omitted on the schematic diagram insome case.2) On the occasion, be confirmed the common parts on theparts list.3) Refer to “Common Parts List” for the other commonparts(Rl05, DD4, DK4).NOTENOTENOTE ON SAFETY:Symbol Fire or electrical shock hazard. Only originalparts should be used to replaced any part marked withsymbol Any other component substitution ( other thanoriginal type), may increase risk of fire or electrical shockhazard.990521 A.ONOTE ON SAFETY FOR FUSIBLE RESIST OR :The suppliers and their type numbers of fusible resistors are asfollows ;1 . KOA Corporation Part No.(MJI)Type No.(KOA) DescriptionNH05 x x x 140RF25S x x x x JJJJ5% (1/4W)NH05 x x x 120 RF50S x x x x 5% (1/2W)NH85 x x x 110RF73B2A x x x x 5% (1/10W)NH95 x x x 140RF73B2E x x x x 5% (1/4W)Resistance value Resistance value(0.1 - 10k )2. Matsushita Electronic Components Co., Ltd Part No.(MJI)Type No.(MEC) Descriptio