Yamaha-AX450-int-sm(1) 维修电路原理图.pdf

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1、SERVICE MANUAL100884IMPORTANT NOTICEThis manual has been provided for the use of authorized YAMAHA Retailers and their service personnel.It has been assumed that basic service procedures inherent to the industry, and more specifically YAMAHA Products, are alreadyknown and understood by the users, an

2、d have therefore not been restated.WARNING:Failure to follow appropriate service and safety procedures when servicing this product may result in personalinjury, destruction of expensive components, and failure of the product to perform as specified. For these reasons,we advise all YAMAHA product own

3、ers that any service required should be performed by an authorizedYAMAHA Retailer or the appointed service representative.IMPORTANT:The presentation or sale of this manual to any individual or firm does not constitute authorization, certification orrecognition of any applicable technical capabilitie

4、s, or establish a principle-agent relationship of any form.The data provided is believed to be accurate and applicable to the unit(s) indicated on the cover. The research, engineering, andservice departments of YAMAHA are continually striving to improve YAMAHA products. Modifications are, therefore,

5、 inevitableand specifications are subject to change without notice or obligation to retrofit. Should any discrepancy appear to exist, pleasecontact the distributors Service Division.WARNING:Static discharges can destroy expensive components. Discharge any static electricity your body may haveaccumul

6、ated by grounding yourself to the ground buss in the unit (heavy gauge black wires connect to this buss).IMPORTANT:Turn the unit OFF during disassembly and part replacement. Recheck all work before you apply power to the unit.P.O.Box 1, Hamamatsu, JapanI CONTENTSTO SERVICE PERSONNEL . 2IMPEDANCE SEL

7、ECTOR . 3FRONT PANELS. 46REAR PANELS . 715REMOTE CONTROL PANELS. 16SPECIFICATIONS / 参考仕様 . 1718INTERNAL VIEW . 18DISASSEMBLY PROCEDURES / 分解手順 . 1921SELF DIAGNOSIS FUNCTION (DIAG) /自己診断機能（）. 2242AMP ADJUSTMENT / 部調整 . 43IC DATA . 4449BLOCK DIAGRAM. 5051DISPLAY DATA . 52PRINTED CIRCUIT BOARD . 5373PI

8、N CONNECTION DIAGRAM . 74SCHEMATIC DIAGRAM . 7585PARTS LIST. 87123REMOTE CONTROL. 124125AV RECEIVER/AV AMPLIFIERRX-V550/HTR-5750RX-V450/HTR-5740/DSP-AX450RX-V550/HTR-5750RX-V450/HTR-5740/DSP-AX450RadioFans.CN 收音机爱 好者资料库RX-V550/HTR-5750RX-V450/HTR-5740/DSP-AX45016RX-V550/HTR-5750RX-V450/HTR-5740/DSP-

9、AX450I REMOTE CONTROL PANELSRX-V550 (U, C, A, L, R, T, K models)HTR-5750 (U, C, A, T, K models)RX-V450 (U, C, A, L, R, T, K models)HTR-5740 (U, C, A models)DSP-AX450 (J model)RX-V450 (B, G, E models)HTR-5740 (G, E models)RX-V550 (B, G, E models)RadioFans.CN 收音机爱 好者资料库17RX-V550/HTR-5750RX-V450/HTR-57

10、40/DSP-AX450RX-V550Except RX-V550161 (6-5/16)140 (5-1/2)376.8 (14-13/16)21(13/16)171 (6-3/4)150 (5-15/16)21(13/16)17.2(11/16)22(7/8)416 (16-3/8) 380 (15)18(11/16)22(7/8)420 (16-1/2) 435 (17-1/8)Unit : mm (inch)/単位: mm（）I SPECIFICATIONS / 参考仕様I Audio Section / 部Minimum RMS Output Power (Power Amp. Se

11、ction) / 定格出力 (部) RX-V550/HTR-5750 (20 Hz to 20 kHz, 0.06% THD, 8 ohms)FRONT L/R90 W + 90 WCENTER90 WSURROUND L/R90 W + 90 WSURROUND BACK90 W (1 kHz, 0.7% THD, 8 ohms)FRONT L/R105 W + 105 WCENTER105 WSURROUND L/R105 W + 105 WSURROUND BACK105 W RX-V450/HTR-5740 (20 Hz to 20 kHz, 0.06% THD, 8 ohms)FRO

12、NT L/R85 W + 85 WCENTER85 WSURROUND L/R85 W + 85 WSURROUND BACK85 W (1 kHz, 0.7% THD, 8 ohms)FRONT L/R100 W + 100 WCENTER100 WSURROUND L/R100 W + 100 WSURROUND BACK100 W DSP-AX450 (20 Hz to 20 kHz, 0.09% THD, 6 ohms)FRONT L/R85 W + 85 WCENTER, REAR CENTER85 WSURROUND L/R85 W + 85 WSURROUND BACK85 WM

13、aximum Power / 実用最大出力 (EIAJ)(1kHz, 10% THD) RX-V550/HTR-5750 (R, T, K models)FRONT L/R (8 ohms)130 W + 130 WCENTER, REAR CENTER (8 ohms)130 WSURROUND L/R (8 ohms)130 W + 130 WSURROUND BACK (8 ohms)130 W RX-V450/HTR-5740 (R, T, K models)FRONT L/R (8 ohms)125 W + 125 WCENTER, REAR CENTER (8 ohms)125 W

14、SURROUND L/R (8 ohms)125 W + 125 WSURROUND BACK (8 ohms)125 W DSP-AX450FRONT L/R (6 ohms)125 W + 125 WCENTER, REAR CENTER (6 ohms)125 WSURROUND L/R (6 ohms)125 W + 125 WSURROUND BACK (6 ohms)125 WDIN Standard Output Power Per Channel / DIN(B, G, E, L models) (1 kHz, 0.7% THD, 4 ohms) RX-V550/HTR-575

15、0FRONT L/R135 W + 135 WCENTER135 WSURROUND L/R135 W + 135 WSURROUND BACK135 W RX-V450/HTR-5740FRONT L/R130 W + 130 WCENTER130 WSURROUND L/R130 W + 130 WSURROUND BACK130 WIEC Power / IEC B, G, E, L models RX-V550/HTR-5750FRONT L/R (1 kHz, 0.06% THD, 8 ohms)100 W + 100 W RX-V450/HTR-5740FRONT L/R (1 k

16、Hz, 0.06% THD, 8 ohms)95 W + 95 WDynamic Power Per Channel / (IHF) RX-V550/HTR-5750FRONT L/R (8/6/4/2 ohms)120/155/190/235 W RX-V450/HTR-5740FRONT L/R (8/6/4/2 ohms)115/150/185/230 W DSP-AX450FRONT L/R (8/6/4/2 ohms)/125/155/200 WDynamic Headroom / (U, C models) RX-V550/HTR-57508 ohms1.25 dB RX-V450

17、/HTR-57408 ohms1.31 dBDamping Factor / 20 Hz to 20 kHz, SPEAKER-A100 or moreInput Sensitivity / Input Impedance (入力感度/入力)CD, etc.200 mV / 47 k-ohmsMULTI CH INFRONT L/R, CENTER, SURROUND L/R, SUB WOOFER200 mV / 47 k-ohmsMaximum Input Signal Level / 最大許容入力1 kHz, 0.5% THD2.0 V or moreOutput Level / Out

18、put Impedance (出力電圧/出力)REC OUT200 mV / 1.2 k-ohms20Hz SUB WOOFER4 V / 1.2 k-ohmsZONE2 (RX-V550 U, C, A models)200 mV / 1.2 k-ohmsHeadphone Jack Rated Output / Impedance出力/出力CD, etc. (1 kHz, 50 mV, 8 ohms)150 mV / 100 ohmsFrequency Response / 周波数特性CD, etc. to FRONT L/R (10 Hz to 100 kHz)+0/-3.0 dBTot

19、al Harmonic Distortion / 全高調波歪率(20Hz to 20kHz, 40W, 8 ohms)CD, etc. (Effect Off) to FRONT L/R SP OUT0.06 % or lessSignal to Noise Ratio / 信号対雑音比 (IHF-A Network)CD, etc. (Input shorted) SP OUT 250mV100 dB or moreResidual Noise / 残留 (IHF-A Network)FRONT L/R SP OUT150 V or lessChannel Separation / CD,

20、etc. (Input 5.1 k-ohms shorted, 1 kHz/10 kHz)60 dB or more/45 dB or moreTone Control Characteristics / 特性BASSBoost/Cut10 dB (60 Hz)TREBLEBoost/Cut10 dB (20 kHz)Filter Characteristics / 特性FRONT L/R, CENTER, SURROUND L/R SURROUND BACK SPSmall (H.P.F.)fc= 40/60/80/90/100/110/120/160/200 Hz / 12 dB/ oct

21、.SUBWOOFER (L.P.F.)fc= 40/60/80/90/100/110/120/160/200 Hz / 24 dB/ oct.I Video Section / 部Video Signal Type / 信号方式U, C, R, K, J modelsNTSCA, B, G, E, L, T modelsPALVideo Signal Level / 信号1 Vp-p / 75 ohmsS-Video Signal Level / S信号 RX-V550/HTR-5750/DSP-AX450Y1 Vp-p / 75 ohmsC0.286 Vp-p / 75 ohmsCompon

22、ent Signal Level (Except J model)Y1 Vp-p / 75 ohmsCb/Cr0.7 Vp-p / 75 ohmsD4-Video Signal Level / D4端子信号 (J model)Y1 Vp-p / 75 ohmsCb/Cr0.7 Vp-p / 75 ohmsMaximum Input Level / 最大許容入力1.5 Vp-p or moreSignal to Noise Ratio / 信号対雑音比50 dB or moreMonitor Out Frequency Response / 周波数帯域 RX-V550/HTR-5750Compo

23、site Video Signal Level,S-Video Signal Level5 Hz to 10 MHz, -3 dBS-Video Signal Level (J model)5 Hz to 10 MHz, -3 dBComponent Video Signal Level5 Hz to 60 MHz, -3 dB RX-V550/HTR-5750/DSP-AX450Composite Video Signal Level5 Hz to 10 MHz, -3 dBS-Video Signal Level (J model)5 Hz to 10 MHz, -3 dBComponen

24、t Video Signal Level (Except J model)5 Hz to 60 MHz, -3 dBD4-Video Signal Level (J model)5 Hz to 60 MHz, -3 dBI FM Section / FM部Tuning Range / 受信周波数範囲U, C models87.5 to 107.9 MHzA, B, G, E, T, K models87.5 to 108.0 MHzL, R models87.5 to 108.0 / 87.50 to 108.00 MHzJ model76.0 to 90.0 MHz50dB Quieting

25、 Sensitivity / 50dB SN感度 (IHF)(1kHz, 100% Mod.)Mono2.0 V (17.3 dBf)Stereo25 V (39.2 dBf)Usable Sensitivity / 実用感度 (IHF)Mono1.0 V (11.2 dBf)Selectivity / 選択度70 dBSignal to Noise Ratio / 信号対雑音比 (IHF)Mono / Stereo76 dB / 70 dBHarmonic Distortion / 歪率(1 kHz)Mono/Stereo0.2 / 0.3 %Stereo Separation / 1 kH

26、z42 dBFrequency Response / 周波数特性20 Hz to 15 kHz+0.5 / -2 dBAntenna Input / 入力75 ohms unbalancedI AM Section / AM部Tuning Range / 受信周波数範囲U, C models530 to 1,710 kHzA, B, G, E, T, K, J models531 to 1,611 kHzL, R models530 to 1,710 / 531 to 1,611 kHzUsable Sensitivity / 実用感度300 V/mAntenna / 入力Loop Anten

27、naI General / 総合Power Supply / 電源電圧U, C modelsAC 120 V, 60 HzA modelAC 240 V, 50 HzB, G, E modelsAC 230 V, 50 HzL modelAC 220/230-240 V, 50/60 HzR modelAC 110/120/220/230-240 V, 50/60 HzT modelAC 220 V, 50 HzK modelAC 220 V, 60 HzJ modelAC 100V, 50/60 HzPower Consumption / 消費電力U, C models350 W / 440

28、 VAA, B, G, E, L, R, T, K models360 WJ model245 WStandby Power Consumption (reference data) / 待機時消費電力（参考値） AC240 V / 50 Hz0.1 WMaximum Power Consumption R model(6ch Drive, 10% THD)700 WAC Outlets / AC2 Switched Outlets U, C, G, E, T, J models100 W max. total L, R models50 W max. total1 Switched Outl

29、et A, B models100 W max.Dimensions / 寸法 (W x H x D)RX-V550435 x 171 x 420 mm (17-1/8 x 6-3/4 x 16-1/2)HTR-5750/RX-V450/HTR-5740/DSP-AX450435 x 161 x 416 mm (17-1/8 x 6-5/16 x 16-3/8)Weight / 質量11.0 kg (24 lbs. 4 oz.)Finish / 仕上RX-V550.Gold color (L, R, T, K) modelsBlack color (U, C, A, B, G, E, R) m

30、odelsTitanium color (B, G, E models)HTR-5750 .Gold color (T, K) modelsBlack color (U, C) modelsSilver color (U, C, A) modelsRX-V450.Gold color (L, R, T, K) modelsBlack color (U, C, A, B, G, E, R) modelsSilver color (C, L, R) modelsTitanium color (B, G, E models)HTR-5740.Gold color (T, K) modelsBlack

31、 color (U, C, G, E) modelsSilver color (U, C, A, G, E) modelsDSP-AX450 .Gold color (J) modelSilver color (J) modelAccessories / 付属品Remote Control x 1, Batteries (Manganese Dry) x 4 (RAV250/RAV251) / x 2 (RAV302), Indoor FM Antenna x 1, AM LoopAntenna x 1, PAL 75/300 Socket B model* Specifications ar

32、e subject to change without notice due to productimprovements. 参考仕様外観予告変更。U . U.S.A. modelC . Canadian modelA . Australian modelB . British modelG . European modelE . South European modelL. Singapore modelR . General modelT . Chinese modelK . Korean modelJ . Japanese modelManufactured under license

33、from Dolby Laboratories.“Dolby”, “Pro Logic”, “Surround EX”, and the double-D symbol aretrademarks of Dolby Laboratories.実施権基製造。、DOLBY、PRO LOGIC、EXD記号、商標。SILENT CINEMA is a trademark of YAMAHA CORPORATION.SILENT THEATER 株式会社登録商標。“DTS” and “DTS-ES Digital Surround” and “Neo:6” aretrademarks of Digita

34、l Theater Systems, Inc.DTS、DTS-ESNeo:6登録商標。AAC商標。 DIMENSIONS / 寸法図RX-V550/HTR-5750RX-V450/HTR-5740/DSP-AX45018CATEGORYMAIN MENUSUB MENUSELECT MENUVALUE INITIALBASIC SETUPROOM : S M LS / M / LSUBWOOFER : YESYES / NONESPEAKER : 6spk2 / 3 / 4 / 5 / 6SET CANCELSET / CANCELCHECK OK? : YESYES / NOMANUAL S

35、ETUP1 SOUND MENUA ) SPEAKER SETCENTER : SMLNONE / SML / LRGFRONT : LARGESMALL / LARGESURR LR : SMLNONE / SML / LRGSURR B : SMLNONE / SML / LRGBASS OUT : BOTHSWFR / FRONT / BOTHCross Over : 80Hz40 / 60 / 80 / 100 / 110 / 120 / 160 / 200 HzSWFR PHASE : NRMNRM / REVB ) SP LEVELL| RCENTER 10 stepC|RL |R

36、C |RR |SWFR|C ) SP DISTANCEUNIT : feetfeet / metersFRONT L 10.0ftfeet : 1.0 to 80.0 ft 7.0ft / 0.5 ft stepFRONT R 10.0ftCENTER 10.0ftSURR L 10.0ftSURR R 10.0ftSURR B 7.0ftSWFR 10.0ftFRONT L 3.00mmeters : 0.30 to 24.00 m 3.00m / 0.10 m stepFRONT R 3.00mCENTER 3.00mSURR L 3.00mSURR R 3.00mSURR B 3.00m

37、SWFR 3.00mD ) CENTER GEQTEST : OFF ONOFF / ON100Hz -|- 0-6 dB to +6 dB 0 dB / 0.5 STEP300Hz -|- 01kHz-|- 03kHz-|- 010kHz -|- 0E ) LFE LEVELSP LFE : 0-20 dB to 0 dB 0 dB / 1 STEPHP LFE : 0-20 dB to 0 dB 0 dB / 1 STEPF ) D . RANGESP D . R : MAXMIN / STD / MAXHP D . R : MAXMIN / STD / MAXG ) AUDIO SETM

38、UTE : MUTE-20 dB / MUTEDELEY : 0 ms0 ms to 160 ms / 1 step( Except RX-V550 )DUAL MONO : MAINMAIN / SUB / ALL2 INPUT MENUA ) I / O ASSIGNC . V (A) : DVDDVD / VCR / V-AUX / DTV/CBLC . V (B) : DVT/CBLDVD / VCR / V-AUX / DTV/CBLOUT (1) : MD/CD-RMD/CD-R / CD / VCR / V-AUX / DTV/CBL / DVDIN (2) : MD/CD-RM

39、D/CD-R / CD / VCR / V-AUX / DTV/CBL / DVDIN (3) : DVDMD/CD-R / CD / VCR / V-AUX / DTV/CBL / DVDIN (4) : DTV/CBLMD/CD-R / CD / VCR / V-AUX / DTV/CBL / DVDB ) INPUT MODE AUTO / LASTAUTO / LAST3 OPTION MENUA ) DISPLAY SETDIMMER : 0-4 to 0 / 1 stepV CONV : ONOFF / ONB ) MEMORY GUARDMEM . GUARD : OFFOFF

40、/ ONC ) PARAM . INID ) ZONE SETSP B : FRONTFRONT / ZONE B1 SUBTRANS P.C.B.2 POWER (2) P.C.B. (R, L models only)3 FUNCTION (5) P.C.B. (U, C, A models only)4 MAIN (2) P.C.B.5 Tuner6 FUNCTION (7) P.C.B.7 FUNCTION (3) P.C.B.8 FUNCTION (4) P.C.B.9 FUNCTION (8) P.C.B.0 FUNCTION (6) P.C.B.A FUNCTION (2) P.

41、C.B.B DSP P.C.B.C MAIN (1) P.C.B.D FUNCTION (1) P.C.B.E POWER (1) P.C.B.F MAIN (7) P.C.B.G MAIN (4) P.C.B.H OPERATION (4) P.C.B.I OPERATION (1) P.C.B.J OPERATION (3) P.C.B.K OPERATION (2) P.C.B.L Power TransformerHILKJBACDEFG12 345678 9 0RX-V5501 SUBTRANS P.C.B.2 POWER (2) P.C.B. (R, L models only)3

42、 VIDEO P.C.B. (DSP-AX450 only)4 MAIN (2) P.C.B.5 Tuner6 FUNCTION (7) P.C.B. (Except DSP-AX450)7 FUNCTION (3) P.C.B. (HTR-5750, DSP-AX450 only)8 FUNCTION (4) P.C.B.9 FUNCTION (8) P.C.B.0 FUNCTION (6) P.C.B.A FUNCTION (2) P.C.B.B DSP P.C.B.C MAIN (1) P.C.B.D FUNCTION (1) P.C.B.E POWER (1) P.C.B.F MAIN

43、 (7) P.C.B.G MAIN (5) P.C.B.H OPERATION (4) P.C.B.I OPERATION (1) P.C.B.J OPERATION (5) P.C.B.K OPERATION (2) P.C.B.L OPERATION (3) P.C.B.M Power TransformerHIJKLMBACDEFG123 45678 9 0HTR-5750/RX-V450/HTR-5740/DSP-AX450 Set Menu Table / I INTERNAL VIEW6ch Stereo ParameterUnitCT LEVEL0/100/1%SL LEVEL0

44、/100/1%SR LEVEL0/100/1%SB LEVEL0/100/1% The variable range of the parameter (Min/Max/Step) / 可変範囲（最小/最大/）UnitDSP LEVEL-6/+3/1dBDELAY1/99/1msPro Logic IIx Music ParameterUnitPLII/PLIIxPLII/PLIIxPANORAMAOFF/ONDIMENSIONS-3/+3/1CT WIDTH0/7/1DTS Neo:6 Music ParameterUnitC. IMAGE0/0.5/0.119RX-V550/HTR-575

45、0RX-V450/HTR-5740/DSP-AX450FUNCTION (3) P.C.B.DSP P.C.B.FUNCTION (7) P.C.B.FUNCTION (5) P.C.B.(U, C, A models only)FUNCTION (8) P.C.B.FUNCTION (4) P.C.B.FUNCTION (6) P.C.B.FUNCTION (1) P.C.B.FUNCTION (2) P.C.B.TunerSupport/DSPDSP P.C.B.FUNCTION (2) P.C.B.CB2CB351CB1CB502CB503CB3076 Top CoverFront Pa

46、nel UnitKnobSub Chassis UnitPlate SidePlate SideCB863CB309CB306CB505113344552278I DISASSEMBLY PROCEDURESFig. 1 (Remove parts in the order as numbered.)Disconnect the power cable from the AC outlet.1. Removal of Top Covera. Remove 4 screws (1) and 4 screws (2). (Fig. 1)b. Slide the Top Cover rearward

47、 to remove it. (Fig. 1)2. Removal of Front Panel Unita. Remove 2 Knobs. (Fig. 1)b. Remove 6 screws (3) and then remove the Front Panel Unit.(Fig. 1)3. Removal of Plate Sidea. Remove 2 push rivets (4). (Fig. 1)b. Remove the Plate Side. (Fig. 1)Fig. 25. Removal of DSP P.C.B.a. Remove 1 screw (6). (Fig

48、. 2)b. Remove 7 screws (7). (Fig. 3)c. Remove CB2. (Fig. 2)d. Lift up the FUNCTION (2) P.C.B. and remove the CB1. (Fig. 2)e. Remove the DSP P.C.B. with the Support/DSP. (Fig. 2)Fig. 36. Removal of FUNCTION (1) (8) P.C.B.s and Tunera. Remove CB307, CB351, CB502 and CB503. (Fig. 2)b. Remove 21 (U, C,

49、A models) / 20 (except U, C, A models)screws (8). (Fig. 3)c. Remove FUNCTION (1) (8) P.C.B.s. and the Tuner. (Fig. 4)RX-V5504. Removal of Sub Chassis Unita. Remove 2 screws (5) and then slide the Sub Chassis Unitforward. (Fig. 1)b. Loosen the harness fixture fixing the cable.c. Remove CB306, CB309,

50、CB505 and CB863 and then removethe Sub Chassis Unit. (Fig. 1)Fig. 4RX-V550/HTR-5750RX-V450/HTR-5740/DSP-AX45020 Top CoverFront Panel UnitCB309CB306CB505CB8631133322Support/DSP/DSPDSP P.C.B.FUNCTION (2) P.C.B.CB2CB351CB1CB502CB503CB3074Cloth布CB354CB351CB503MAIN (1) P.C.B.MAIN (7) P.C.B.MAIN (5) P.C.B