Marantz-SR480-avr-sm 维修电路原理图.pdf

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1、Printed in JapanTABLE OF CONTENTSSECTIONPAGE1.TECHNICAL SPECIFICATIONS (SR480) . 12.TECHNICAL SPECIFICATIONS (PM488AV) . 23.BLOCK DIAGRAM . 34.WIRING DIAGRAM. 55.SCHEMATIC DIAGRAM AND PARTS LOCATION (Parts Side) . 76.COMPONENT DESCRIPTIONS. 367.ALIGNMENT PROCEDURES. 408.EXPLODED VIEW AND PARTS LIST

2、(SR480). 439.EXPLODED VIEW AND PARTS LIST (PM488AV) . 4710.ELECTRICAL PARTS LIST . 49ServiceManualPlease use this service manual with referring to the user guide (D.F.U) without fail.4822 725 51191First Issue:1999.03237W855010 AOSR480UAudio/Video receivermodel SR480/PM488AV74PM488AV/02B74SR480/01B/0

3、2BAudio/Video Integrated amplifierSR480PM488AVMARANTZ AMERICA, INC.440 MEDINAH ROADROSELLE, ILLINOIS 60172USAPHONE : 630 - 307 - 3100FAX: 630 - 307 - 2687LENBROOK INDUSTRIES LIMITED633 GRANITE COURT,PICKERING, ONTARIO L1W 3K1CANADAPHONE : 905 - 831 - 6333FAX: 905 - 831 - 6936MARANTZ EUROPE B. V.P.O.

4、BOX 80002BUILDING SFF25600 JB EINDHOVENTHE NETHERLANDSPHONE : +31 - 40 - 2732241FAX: +31 - 40 - 2735578SUPERSCOPE TECHNOLOGIES, INC.MARANTZ PROFESSIONAL PRODUCTS2640 WHITE OAK CIRCLE, SUITE AAURORA, ILLINOIS 60504 USAPHONE : 630 - 820 - 4800FAX: 630 - 820 - 8103TC ELECTRONICS CANADA LTD.540 FIRING A

5、VE.BAIE DURF, QUEBEC H9X 3T2CANADAPHONE : 514 - 457 - 4044FAX: 514 - 457 - 5524MK ENTERPRISES LTD.2F SHINHAN BLDG., 247-17 SEOKYO-DONGMAPO-KU, SEOULKOREAPHONE : +82 - 2 - 323 - 2155FAX: +82 - 2 - 323 - 2154MARANTZ BRAZILCAIXA POSTAL 21462CEP 04698-970SAO PAULO, SP, BRAZILPHONE : 0800 - 123123FAX: +5

6、5 11 534. 8988PAl- YUING CO., LTD.6 TH FL NO, 148 SUNG KIANG ROAD,TAIPEI, 10429, TAIWAN R.O.C.PHONE : +886 (2) 5221304FAX: +886 (2) 5630415MRZ STANDARD CO., LTD.746 - 754 MAHACHAI RD.,WANGBURAPAPIROM, PHRANAKORN,BANGKOK, 10200 THAILANDPHONE : +66 - 2 - 222 - 9181FAX: +66 - 2 - 224 - 6795WO KEE HONG

7、ELECTRONICS SDN. BHD.NO. 102 JALAN SS 21/35, DAMANSARAUTAMA, 47400 PETALING JAYASELANGOR DARUL EHSAN,MALAYSIAPHONE : +60 3 - 7184666FAX: +60 3 - 7173828MARANTZ JAPAN, INC.35- I , 7- CHOME, SAGAMIONOSAGAMIHARA - SHI, KANAGAWAJAPAN 228-8505PHONE : +81 42 748 1013FAX: +81 42 741 9190FORWARD MARKETING (

8、S) PTE. LTD.23, LORONG 8, TOA PAYOH,SINGAPORE 319257.PHONE : +65 2583640FAX: +65 3564047SHOCK, 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 ma

9、ins 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

10、.USACANADAEUROPE / TRADINGUSABRAZIL(Discagem Direta Gratuita)TAIWANTHAILANDMALAYSIAIn case of difficulties, do not hesitate to contact the TechnicalDepartment at above mentioned address.JAPAN TechnicalSINGAPORE981110A.OSCAN AUDIO PTY. LTD.52 CROWN STREET, RICHMOND 3121VICTORIAAUSTRALIAPHONE : +61 -

11、3 - 9429 - 2199FAX: +61 - 3 - 9429 - 9309AUSTRALIA / NEW ZEALANDKOREACANADAMARANTZ 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 pe

12、rform 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 m

13、ust 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

14、considered as null and void.RadioFans.CN 收音机爱 好者资料库1. TECHNICAL SPECIFICATION (SR480)FM Tuner Section Frequency Range .87.5 - 108.0 MHz Usable Sensitivity.IHF 0.9 V / 10.8 dBf Signal to Noise Ratio .Mono / Stereo 0.2 / 0.5 % Distortion .Mono / Stereo 0.2 / 0.5 % Stereo Separation .U version 1 kHz 48

15、 dB/01B/02B version 1 kHz 45 dB A.C.S. . 400 kHz 55 dB Image Rejection .98 MHz 50 dB Tuner Output level. U version 1 kHz, 75 kHz Dev 940 mV/01B/02B version 1 kHz, 40 kHz Dev 500 mVAM Tuner Section Frequency .U version 520 - 1710 kHz/01B/02B version 522 - 1611 kHz Usable Sensitivity.Loop 500 V / m Si

16、gnal to Noise Ratio . 50 dB Distortion .1 kHz, 30 % Mod. 0.5 % Selectivity .U version 20 kHz 70 dB/01B/02B version 10 kHz 25 dBAudio Section Rated Power ( 5 ch drive ) Front. 20 Hz - 20 kHz 8 ohms 50 W / ch Center . 1 kHz 8 ohms 50 W Surround . 1 kHz 8 ohms 50 W / ch THD Front .20 Hz - 20 kHz 8 ohms

17、 0.09% Input Sensitivity / Imedance Linear . 200 mV / 47 k ohms Signal to Noise Ratio ( IHF A ) Linear . 92 dBVideo Section Input / Output Level / Impedance . 1.0 Vp-p / 75 ohmsOthers Power Supply .U version AC 120 V 60 Hz/01B version AC 115 V / 230 V 50 / 60 Hz/02B version AC 230 V 50 Hz Power Cons

18、umption. 280 WDimensions ( MAX ) Width . 17 - 1/4 inches ( 440 mm ) Height.6 inches ( 153 mm ) Depth. 16 - 1/2 inches ( 420 mm ) Weight .31 lbs ( 14 kg )Specifications subject to change without prior notice.2. TECHNICAL SPECIFICATION (PM488AV)Audio Section Rated Power ( 5 ch drive ) Front. 20 Hz - 2

19、0 kHz 8 ohms 50 W / ch Center . 1 kHz 8 ohms 50 W Surround . 1 kHz 8 ohms 50 W / ch THD Front .20 Hz - 20 kHz 8 ohms 0.09% Input Sensitivity / Imedance Linear . 200 mV / 47 k ohms Signal to Noise Ratio ( IHF A ) Linear . 92 dBVideo Section Input / Output Level / Impedance . 1.0 Vp-p / 75 ohmsOthers

20、Power Supply . 115 / 230 V, 50 / 60 Hz Power Consumption. 280 WDimensions ( MAX ) Width . 17 - 1/4 inches ( 440 mm ) Height.6 inches ( 153 mm ) Depth. 16 - 1/2 inches ( 420 mm ) Weight .31 lbs ( 14 kg )Specifications subject to change without prior notice.12RadioFans.CN 收音机爱 好者资料库343. BLOCK DIADRAM6

21、54. WIRING DIAGRAM785. SCHEMATIC DIAGRAMS AND PARTS LOCATIONS (Parts side)MAIN SCHEMATIC DIAGRAMIC101Q103Q101Q102IC102IC103IC104Q105IC105Q107Q104 Q108 Q109Q106910MAIN BOARDIC401IC4021112INPUT SCHEMATIC DIAGRAMINPUT BOARD1314INPUT/VIDEO SCHEMATIC DIAGRAMQ450IC453IC456IC450Q451IC452INPUT/VIDEO BOARD15

22、16TUNER SCHEMATIC DIAGRAM ( SR480/01B/02B VERSION)IC4DIC3 Q8LQ9Q8R IC1Q6Q7DQ3Q1Q2Q5Q4IC2IC4DIC3 Q8LQ9Q8R IC1Q6Q7DQ3Q1Q2Q5Q4IC2TUNER BOARD (SR480)TUNER BOARD (SR480)18171920TUNER SCHEMATIC DIAGRAM (SR480 U VERSION)2122SURROUND SCHEMATIC DIAGRAMIC802IC803IC801IC805IC804IC806IC807Q801Q802Q803VOLUME BOA

23、RDSURROUND BOARD2423Q502 Q503 Q505 Q507 Q509 Q510 Q501 Q504Q504 Q508IC510IC511IC512IC502IC505IC508IC501IC504IC507CN02IC503IC506IC509Q511 Q512 Q513TO SW BOARD (CP02)Before MZ01VOLUME SCHEMATIC DIAGRAM25262728AMP SCHEMATIC DIAGRAMQ212RQ211RQ208RQ209R Q205RQ206RQ201RQ202RQ203RQ204RQ207RQ212SRQ211SRQ208

24、SRQ209SR Q205SR Q206SRQ201SR Q202SRQ203SR Q204SRQ207SRQ212CQ211CQ208CQ209CQ205CQ206CQ201CQ202CQ203CQ204CQ207CQ212SLQ211SLQ208SLQ209SLQ205SLQ206SLQ201SLQ202SLQ203SLQ204SLQ207SLQ212LQ211LQ208LQ209LQ205LQ206LQ201LQ202LQ203LQ204LQ207LQ214RQ210RQ213RQ215RQ214SRQ210SRQ213SRQ215SRQ214CQ210CQ213CQ215CQ214SL

25、Q210SLQ213SLQ215SL Q214LQ210LQ213LQ215L2930AMP BOARDQM01SW SCHEMATIC DIAGRAM (Before MZ01)SW BOARD (Before MZ01)FRONT SCHEMATIC DIAGRAM3132VOL ENC BOARDQ305Q301Q304Q307Q309IC301IC601Q311 Q312 Q313Q306 Q302 Q303Q308FRONT BOARD3334POWER SW SCHEMATIC DIAGRAMPOWER SW BOARDSPEAKER SCHEMATIC DIAGRAMSPEAKE

26、R BOARDCN01TO SW BOARD (CP01)Before MZ013536AUX VIDEO SCHEMATIC DIAGRAMHP/SPK SW SCHEMATIC DIAGRAMVOL SEL SCHEMATIC DIAGRAMAUX VIDEOBOARDHP/SPK SW BOARDVOL SEL BOARD6. COMPONENT DESCRIPTIONIC3011. Pin Configuration2. Block Diagram7. ALIGNMENT PROCEDURESTUNER1.Equipment Required AM Standard Signal Ge

27、nerator (AM SSG)Audio Generator OscilloscopeDistortion Meter AC VoltmeterDC Voltmeter FM Standard Signal Generator (FM SSG)Frequency Counter Stereo ModulatorNote : Disconnect external FM antenna prior to alignment2. Alignment and Test Point3. Pin FunctionsPinNo.SymbolDescriptionPinNo.SymbolDescripti

28、on17G8GGrid signal output for FIP.38RESETInput for resetting the CPU.3VDD+5V power supply.(At L, it is active.)4P/DInput for power down.39EXTALInput for 10MHz crystal oscillator.5VOL. UPInput for main volume up.40XTALOutput for 10MHz crystal oscillator.6RDS CLKCLOCK signal output for TDA7330.41GGrou

29、nd.7VOL. DOWN Input for main volume down.42 Not used!8RMCInput for remocon data.43GGround.9RDS OPTION Input to select RDS or non-RDS.44VDD+5V power supply.(At H, RDS is selected.)45VFDF-30V power supply for FIP.1011Not used!464094CELC7536 CHIP ENABLE127536DATADATA signal output for LC7536( FRONT VR)

30、.137536CLKCLOCK signal output for LC7536477822ST7821CEChip enable signal output toLC7821 and LC7822.14DATADATA signal output for487001CEChip enable signal output toLC7821 and LC7822.LM7001.15CLKCLOCK signal output for497536CE2Chip enable signal output toLC7821 and LC7822.LC7536.(Center, rear and woo

31、fer1619KEY IN14Data input for key scan.CH. electric vol.)20RDS. DATAInput for RDS data of TDA7330.50DSP. RSTRESET signal output to IC81021PROTECTInput for detecting PROTECTION(uPD78044, pin 17).condition.51ST-BYNot used!227001. DATA DATA signal output for LM7001.52TU. MUTEOutput for tuner mute.23700

32、1. CLKCLOCK signal output for LM7001.(At H, it is active.)24STEREOInput for detecting STEREO537536CE1Chip enable signal output tocondition.LC7536.(Front channel electric25DSP. CLKCLOCK signal input from IC810 volume)(uPD78044, pin 9).54LED-FRONT Output to drive RF LED.26DSP. INDATA signal input from

33、 IC810(At H, it is active.)(uPD78044, pin 11).55LED-OPTOutput to drive OPTICAL LED.27DSP. OUTDATA signal output to IC810(At H, it is active.)(uPD78044, pin 10).56LED-MUTEOutput to drive MUTE LED.28VREFReference voltage.(At H, it is active.)(Connected to +5V, Not VDD.)57LED-COAXIALOutput to drive COA

34、XIAL LED.29SPK OFFInput for detecting SPEAKER(At H, it is active.)SWITCH IS OFF condition.58LED-MIDOutput to drive MIDNIGHT LED.30S. MUTEOutput for surround channel mute.(At H, it is active.)(At H, it is active.)59LED-WOOFEROutput to drive WOOFER LED.31F. MUTEOutput for front channel mute.(At H, it

35、is active.)(At H, it is active.)60LED-RFOutput to drive RF LED.32AMP MUTEOutput for main mute.(At H, it is active.)(At H, it is active.)61LED-ST/BYOutput to drive stand by LED.33C. MUTEOutput for center channel mute.(At H, it is active.)(At H, it is active.)6265P1P4Segment signal output for FIP.34W.

36、 MUTEOutput for subwoofer mute.6673P5P12Segment signal output for FIPand(At H, it is active.)data output for key scan.35TUNEDInput for detecting TUNED7488P13P27Segment signal output for FIP.condition.(At L, it is active.)89VDD+5V power supply.36STEPInput for selecting the frequency9094P28P32Segment

37、signal output for FIP.ranges steps of FM and AM.951001G6GGrid signal output for FIP.37VSSTis pin provides the ground potential.4. Key MatrixKEY IN2 VCR1 DIGITALVCR2/DVD DELAYCENTER TUNING FM/AM SEARCH PIN17 SW321 SW306 SW322 SW336 SW330 SW313 SW328 SW307KEY IN4 SURROUND MID TAPE1 REAR T. TONE F/P CD

38、 PIN19 SW319 SW304 SW325 SW334 SW332 SW311 SW327KEY IN3SLEEPWOOFER AUX REARCEN-MODE MEMORYTUNING PTY-SEL PIN18SW302 SW303 SW324 SW333 SW329 SW310 SW314 SW309 P5 P6 P7 P8 P9 P10 P11 P12PIN66PIN67PIN68PIN69PIN70PIN71PIN72PIN73KEY IN1 STEREOAUX/FRONT LD DELAYCENTERFM MODE TAPE2 DISPLAY PIN16 SW320 SW30

39、5 SW323 SW335 SW331 SW312 SW326 SW308OUTIN3740Pin No.SymbolDescription17Not used!8VDD+5V power supply.9SCK0CLOCK signal output to IC301(CXP82852, pin 25).10SB1DATA signal input from IC301(CXP82852, pin 27)11SB0DATA signal output to IC301(CXP82852, pin 26)1213Not used!14SCK1CLOCK signal output to IC8

40、07(MC56009) and IC806(CS4226).15SO1DATA signal output to IC807(MC56009) and IC806(CS4226).16SI1DATA signal input from IC807(MC56009) and IC806(CS4226).17RESETRESET signal input from IC301(CXP82852, pin 50)18P74Ground.19P73Ground.20AVSSGround.21AN17RESET signal output to IC806(CS4226).22AN16Not used!

41、23AN15STROBE signal output to IC806(CS4226).24AN14Not used!25AN13Output for all channel mute.(At L, it is active.)2627Not used!28AN10Sampling rate control port.(At H, it is 48 kHz mode. At L, it is 44.1 kHz mode.) 29AVDD+5V power supply.30AVREF+5V power supply.31XT1Ground.32XT2Not used!33VSSThis pin

42、 provides the ground potential.34X1Input for 4.19MHz crystal oscillator.35X2Output for 4.19MHz crystal oscillator.36P37Output for DSP mode.(At H, it is active.)37BUZGeneral purpose I/O pin. This pin is connected pin 39 and pin 4038PCLIC803(PM4007) OSC control port.(At H, it is OSC-OFF. At L, it is O

43、SC-ON.) 39TI2This pin is connected pin 37 and pin 4040TI1This pin is connected pin 37 and pin 3941TO2Chip enable signal output to IC807(MC56009).42TO1RESET signal output to IC807(MC56009).43TO0Host request port from IC807(MC56009).44CI0Test tone retry.(At L, it is active.)45INTP2Input for detecting

44、OPTICAL INPUT.(At L, it is active.)46INP1Input for detecting COAXIAL INPUT.(At L, it is active.)47TI0Input for detecting AC-3 DATA and PCM DATA.(At L, it is active.)48ICGround.4951Not used!52VDD+5V power supply.5370Not used!71VLOADGround.7280Not used!38IC801:MPD7804GF-XXX-3B91. Pin Configuration2. B

45、lock Diagram3. Pin Functions393. AM Alignment Output of signal generator should not be greater than necessary to obtain an optimum output reading. Signal generator modulation : 30% RF Signal frequency : 400 Hz Switch : Press the BAND button to AMStepSubject1 Tuning 520kHz 520KHz DC Volt meter to J22

46、 (TP1) T2 DC 1.32V 1.35V Voltage (522kHz) (522kHz) AM OSC(R)2Usable 600kHz 600kHz AC voltmeter and T1sentivity (594kHz) (594kHz) oscilloscope to MW ANT(W) Maximize 1400kHz1400kHz speaker terminal TC1 audio output (1404kHz)(1404kHz) of L or R channel * Feed signal should be fed to loop antenna throug

47、h the test loop antenna 60 cm distant from the appliance. * Repeat the step low and high frequency until no further improvement occurs.3 IF 1000kHz 1000kHz AC voltmeter and T3 Maximize (999kHz) (999kHz) oscilloscope to speaker AM IFT audio output terminal of L or R channel4 Tuned 1000kHz (999kHz) 10

48、00kHz VR1 Tuned flag in Level 800V/m (999kHz) the FL display light on4. FM Alignment Output of signal generator should not be greater than necessary to obtain an optimum output reading. Signal generator deviation : USA/Canada/Korea : 75kHz, Europe : 40kHz RF Signal frequency : 1kHz Switch : Press th

49、e BAND button to FM and MODE button to MONO. StepSubject1 Tuning 98.1MHz 98.1MHz DC Volt meter T4 Zero reading on Band Width (98MHz) (98MHz) to R26 (PCB1) DC Volt meter2 THD 98.1MHz 98.1MHz Distortion meter to T5 Minimize (98MHz) (98MHz) TAPE OUT jack distortion of L or R channel3 Tuned 98.1MHz (98.

50、1MHz) 98.1MHz VR2 Tuned flag in the Level SSG output level : (98MHz) FL display light on 10V/mSignalGeneratorFrequencySetFrequencySettingEquipmentConnectionAdjustmentPointAdjust forSignalGeneratorFrequencySetFrequencySettingEquipmentConnectionAdjustmentPointAdjust for415. MPX Alignment Signal genera