Yamaha-RXV420RDS-rec-sm(1) 维修电路原理图.pdf

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1、SERVICE MANUALAV RECEIVERRX-V420/RX-V420RDS/HTR-5440/HTR-5440RDS100754IMPORTANT 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

2、, are alreadyknown and understood by the users, and 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.

3、For these reasons,we advise all YAMAHA product owners 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 orr

4、ecognition of any applicable technical capabilities, 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 impr

5、ove YAMAHA products. Modifications are, therefore, 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. Discharg

6、e any static electricity your body may haveaccumulated 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, Ja

7、panI CONTENTSTO SERVICE PERSONNEL . 1IMPEDANCE SELECTOR . 1FRONT PANELS. 23REMOTE CONTROL TRANSMITTER . 3REAR PANELS . 45SPECIFICATIONS. 6INTERNAL VIEW . 7DISASSEMBLY PROCEDURES . 8SELF DIAGNOSIS FUNCTION (DIAG) . 924AMP ADJUSTMENTS. 24DISPLAY DATA . 2526IC DATA . 2732BLOCK DIAGRAM. 3336PRINTED CIRC

8、UIT BOARD . 3752IC BLOCK DIAGRAM . 5354SCHEMATIC DIAGRAM . 5558PARTS LIST . 5972REMOTE CONTROL TRANSMITTER . 7376SURROUNDD I G I TA LSILENTVIDEO AUXPHONESVIDEOL AUDIO R6CH INPUTINPUT MODEINPUTVOLUMERDS MODE/FREQEONPTY SEEKMODESTARTTUNINGMODEPRESET/TUNINGFM/AMMEMORYEDITBASSBALANCESPEAKERSPROGRAMPRESE

9、T/TUNINGEFFECTA/B/C/D/EABOFFONSTANDBY/OND I G I T A L+LRTREBLE+MANL/AUTO FMAUTO/MANL MONORX-V420RDSRX-V420/RX-V420RDS/HTR-5440/HTR-5440RDSRadioFans.CN 收音机爱 好者资料库RX-V420/RX-V420RDS/HTR-5440/HTR-5440RDSRX-V420/RX-V420RDS/HTR-5440/HTR-5440RDS435 (17-1/8)Unit : mm (inch)151 (5-15/16)130 (5-1/8)352.5 (13

10、-7/8)21(13/16)16(5/8)21.3 (13/16)389.8 (15-3/8)1WALLOUTLETEQUIPMENTUNDER TESTAC LEAKAGETESTER OREQUIVALENTINSULATINGTABLEWARNING: CHEMICAL CONTENT NOTICE!The solder used in the production of this product contains LEAD. In addition, other electrical/electronic and /or plastic(where applicable) compon

11、ents may also contain traces of chemicals found by the California Health and Welfare Agency(and possibly other entities) to cause cancer and/or birth defects or other reproductive harm.DO NOT PLACE SOLDER, ELECTRICAL/ELECTRONIC OR PLASTIC COMPONENTS IN YOUR MOUTH FOR ANY REA-SON WHATSOEVER!Avoid pro

12、longed, unprotected contact between solder and your skin! When soldering, do not inhale solder fumes or exposeeyes to solder/flux vapor!If you come in contact with solder or components located inside the enclosure of this product, wash your hands beforehandling food.I TO SERVICE PERSONNEL1. Critical

13、 Components InformationComponents having special characteristics are marked sand must be replaced with parts having specifications equalto those originally installed.2. Leakage Current Measurement (For 120V Models Only)When service has been completed, it is imperative to verifythat all exposed condu

14、ctive surfaces are properly insulatedfrom supply circuits.GMeter impedance should be equivalent to 1500 ohm shuntedby 0.15F.GLeakage current must not exceed 0.5mA.GBe sure to test for leakage with the AC plug in both polarities.I IMPEDANCE SELECTORIMPEDANCE SELECTORWARNING:Do not change the IMPEDANC

15、E SELECTOR switch setting while the power to this unit is on, otherwise this unit may be damaged. DIMENSIONSRadioFans.CN 收音机爱 好者资料库RX-V420/RX-V420RDS/HTR-5440/HTR-5440RDSRX-V420/RX-V420RDS/HTR-5440/HTR-5440RDS2I FRONT PANELSRX-V420 (U, C, A, R, T models)SURROUNDD I G I TA LSILENTVIDEO AUXPHONESVIDEO

16、L AUDIO R6CH INPUTINPUT MODEINPUTVOLUMETUNINGMODEPRESET/TUNINGFM/AMMEMORYEDITBASSBALANCESPEAKERSPROGRAMPRESET/TUNINGEFFECTA/B/C/D/EABOFFONSTANDBY/OND I G I T A L+LRTREBLE+MANL/AUTO FMAUTO/MANL MONORX-V420RX-V420RDS (B, G models)SURROUNDD I G I TA LSILENTVIDEO AUXPHONESVIDEOL AUDIO R6CH INPUTINPUT MO

17、DEINPUTVOLUMERDS MODE/FREQEONPTY SEEKMODESTARTTUNINGMODEPRESET/TUNINGFM/AMMEMORYEDITBASSBALANCESPEAKERSPROGRAMPRESET/TUNINGEFFECTA/B/C/D/EABOFFONSTANDBY/OND I G I T A L+LRTREBLE+MANL/AUTO FMAUTO/MANL MONORX-V420RDSHTR-5440 (U, C, A, R, T models)SURROUNDD I G I TA LSILENTVIDEO AUXPHONESVIDEOL AUDIO R

18、6CH INPUTINPUT MODEINPUTVOLUMETUNINGMODEPRESET/TUNINGFM/AMMEMORYEDITBASSBALANCESPEAKERSPROGRAMPRESET/TUNINGEFFECTA/B/C/D/EABOFFONSTANDBY/OND I G I T A L+LRTREBLE+MANL/AUTO FMAUTO/MANL MONOHTR-5440RX-V420/RX-V420RDS/HTR-5440/HTR-5440RDSRX-V420/RX-V420RDS/HTR-5440/HTR-5440RDSHTR-5440RDS (G model)SURRO

19、UNDD I G I TA LSILENTVIDEO AUXPHONESVIDEOL AUDIO R6CH INPUTINPUT MODEINPUTVOLUMERDS MODE/FREQEONPTY SEEKMODESTARTTUNINGMODEPRESET/TUNINGFM/AMMEMORYEDITBASSBALANCESPEAKERSPROGRAMPRESET/TUNINGEFFECTA/B/C/D/EABOFFONSTANDBY/OND I G I T A L+LRTREBLE+MANL/AUTO FMAUTO/MANL MONOHTR-5440RDSI REMOTE CONTROL T

20、RANSMITTERU, C, A, R, T modelsB, G models3RX-V420/RX-V420RDS/HTR-5440/HTR-5440RDSRX-V420/RX-V420RDS/HTR-5440/HTR-5440RDSI REAR PANELSU modelC modelA model4RX-V420/RX-V420RDS/HTR-5440/HTR-5440RDSRX-V420/RX-V420RDS/HTR-5440/HTR-5440RDS5G modelR, T modelB modelRX-V420/RX-V420RDS/HTR-5440/HTR-5440RDSRX-

21、V420/RX-V420RDS/HTR-5440/HTR-5440RDS6I SPECIFICATIONSI Audio SectionMinimum RMS Output Power (Power Amp. Section)(20 Hz to 20 kHz, 0.06% THD, 8 ohms) MAIN .65W + 65W CENTER. 65W REAR .65W + 65W(1 kHz, 0.09% THD, 8 ohms) MAIN .70W + 70W CENTER. 70W REAR .70W + 70WMaximum Power (EIAJ) R, T models(1 kH

22、z, 10% THD, 8 ohms)MAIN .95W + 95WCENTER. 95WREAR .95W + 95WDynamic Power Per Channel (IHF)MAIN L/R (8/6/4/2 ohms)U model . 95/115/135/155 WC, A, B, G, R, T models . 90/110/130/150 WDIN Standard Output Power Per ChannelMAIN L/R (1 kHz, 0.7% THD, 4 ohms)G model.95W + 95WDynamic Headroom8 ohmsU, C mod

23、els . 1.18 dBIEC PowerMAIN L/R (1 kHz, 0.06% THD, 8 ohms)G model.67W + 67WDamping FactorMAIN L/R (20 Hz to 20 kHz, 8 ohms) . 60 or moreInput Sensitivity / Input ImpedanceCD, etc. . 150 mV / 47 k-ohmsEXT. DECODERMAIN L/R. 150 mV / 47 k-ohmsCENTER, SURROUND L/R, SUBWOOFER .150 mV / 40 k-ohmsMaximum In

24、put Signal LevelCD, etc. (1 kHz, 0.5% THD, Effect On) . 2.2 VOutput Level / Output ImpedanceREC OUT . 150 mV / 1.2 k-ohmsSUB WOOFERMAIN SP: Small . 4 V/1.2 k-ohmsHeadphone Jack Rated Output / Impedance1 kHz, 150 mV, 8 ohms . 0.47 V / 390 ohmsFrequency ResponseCD, etc. to MAIN (20 Hz to 20 kHz) . 0 0

25、.5 dBTotal Harmonic Distortion(20 Hz to 20 kHz, 35 W / 8 ohms)CD, etc. (EFFECT OFF) to MAIN SP OUT .0.025% or lessSignal to Noise Ratio (IHF-A network)CD, etc. (Input shorted, Effect Off) to MAIN SP OUT150 mV .96 dB or more250 mV .100 dB or moreResidual Noise (IHF-A netwok)MAIN L/R SP OUT . 150 V or

26、 lessChannnel Separation(Vol -30 dB, Effect Off)CD, etc. (Input 5.1 k-ohms terminated, 1 kHz) .60 dB or moreCD, etc. (Input 5.1 k-ohms terminated, 10 kHz) .45 dB or moreTone Control CharacteristicsBass:Boost/Cut . 10 dB (50 Hz)Turnover Frequency . 350 HzTreble: Boost/Cut . 10 dB (20 kHz)Turnover Fre

27、quency . 3.5 kHzFilter CharacteristicsMAIN, Rear SP Small (H.P.F.) .90 Hz, 12 dB/oct.SUBWOOFER (L.P.F.) .90 Hz, 18 dB/oct.I Video SectionVideo Signal TypeU, C, R, T models . NTSCA, B, G models. PALVideo Signal Level. 1 Vp-p / 75 ohmsMaximum Input Level. 1.5 Vp-pSignal to Noise Ratio.50 dB or moreMon

28、itor Out Frequency ResponseS-Video Signal Level .5 Hz to 10 MHz, -3 dBI FM SectionTuning RangeU, C models . 87.5 to 107.9 MHzA, B, G models. 87.5 to 108.0 MHzR, T models. 87.5 to 108.0 / 87.50 to 108.00 MHz50 dB Quieting Sensitivity (IHF)(100% Mod)Mono . 2.0 V (17.3 dBf)Stereo. 25 V (39.2 dBf)Usable

29、 Sensitivity (IHF)Mono . 1.0 V (11.2 dBf)Selectivityat 400 kHz . 70 dBSignal to Noise Ratio (IHF)Mono / Stereo .76 dB / 70 dBHarmonic Distortion(1 kHz)Mono/Stereo. 0.2 / 0.3 %Stereo Separation1 kHz . 45 dBFrequency Response20 Hz to 15 kHz .+0.5 / -2 dBAntenna Input. 75 ohms unbalancedI AM SectionTun

30、ing RangeU, C models . 530 to 1,710 kHzA, B, G models. 531 to 1,611 kHzR, T models. 530 to 1,710 / 531 to 1,611 kHzUsable Sensitivity. 300 V/mAntenna. Loop AntennaI GeneralPower SupplyU, C models .AC 120 V, 60 HzR, T models. AC 110/120/220/240 V, 50/60 HzA model .AC 240 V, 50 HzB, G models .AC 230 V

31、, 50 HzPower ConsumptionU model . 200 WC model . 210 W / 280 VAR, T, A, B, G models. 210 WMaximum Power Consumption(5ch Drive, 10% THD)R model . 480 WAC Outlets2 switched outlets U, C, G models . 100W max., total R, T models. 50W max., total1 switched outlet A, B models. 100W max.Dimensions (W x H x

32、 D). 435 x 151 x 390 mm (17-1/8 x 5-15/16 x 15-3/8)Weight. 9.5 kg (20 lbs. 15 oz.)AccessoriesRemote control transmitter, Manganese batteries, Indoor FMantenna, AM loop antenna* Specifications are subject to change without notice due to productimprovements.U . U.S.A. modelC . Canadian modelA . Austra

33、lian modelB . British modelG. European modelR . General modelT . China modelManufactured under license from Dolby Laboratories. Dolby, AC-3, Pro Logic, and the double-D symbol are trademarks of DolbyLaboratories. 1992-1997 Dolby Laboratories. All rights reserved.Manufactured under license from Digit

34、al Theater Systems, Inc. USPat. No. 5,451,942 and other world-wide patents issued and pending.DTS, DTS Digital Surround, are trademarks of Digital TheaterSystems, Inc. copyright 1996 Digital Theater Systems, inc. All rightsreserved.RX-V420/RX-V420RDS/HTR-5440/HTR-5440RDSRX-V420/RX-V420RDS/HTR-5440/H

35、TR-5440RDS7No.SET MENUPRESET VALUESETTING RANGES1.SPEAKER SET1ACENTER SPEAKERLARGELARGE/SMALL/NONE1BMAIN SPEAKERLARGELARGE/SMALL1CREAR L/R SPEAKERLARGELARGE/SMALL/NONE1DLFE/BASS OUTBOTHSUBWOOFER/MAIN/BOTH1EMAIN LEVELNORMALNORMAL/10dB2.HP TONE CTRLBASS : 0dB6dB +3dB (1dB step)TREBLE : 0dB6dB +3dB3.I/

36、O ASSIGNING3AOPTICAL IN(1) : DVDCD, DVD, D-TV/CBL, VCR, AUX(2) : D-TV/CBLCD, D-TV/CBL, VCR, AUX3BCOAXIAL IN(3) : CDCD, MD/CD-R, DVD, D-TV/CBL, VCR, V-AUX, AUX4.INPUT MODEDVD : AUTOAUTO/LAST5.DOLBY DIGITAL SET5ALFE LEVELSPEAKER : 0dB20dB 0dB5BDYNAMIC RANGESPEAKER : MAXMAX/STD/MIN6.DTS SETLFE LEVELSPE

37、AKER : 0dB10dB +10dB7.SPEAKER DELAY TIMECENTER : 0ms0ms 5ms (1ms step)8.DISPLAY SETDIMMER : 04 09.MEMORY GUARDOFFON/OFF Set Menu TableI INTERNAL VIEW1 MAIN (2) P.C.B.2 MAIN (7) P.C.B.3 MAIN (5) P.C.B.4 MAIN (8) P.C.B.5 MAIN (4) P.C.B.6 INPUT (3) P.C.B.7 INPUT (6) P.C.B.8 DSP P.C.B.9 OPERATION (4) P.

38、C.B.0 INPUT (1) P.C.B.A OPERATION (3) P.C.B.B INPUT (4) P.C.B.C MAIN (1) P.C.B.D MAIN (6) P.C.B.E INPUT (5) P.C.B.F OPERATION (8) P.C.B.G OPERATION (7) P.C.B.H OPERATION (6) P.C.B.I OPERATION (1) P.C.B.J OPERATION (2) P.C.B.YAMAHA1 2 3 45678FEDCBA0 9GHIJRX-V420/RX-V420RDS/HTR-5440/HTR-5440RDSRX-V420

39、/RX-V420RDS/HTR-5440/HTR-5440RDSClothRubber sheetMAIN (1) P.C.B8I DISASSEMBLY PROCEDURES (Remove parts in the order as numbered.)Disconnect the power cord from the AC outlet.1. Removal of Top Cover (Fig. 1)a. Remove 4 screws (1) and 4 screws (2).b. Slide the Top Cover rearward to remove it.2. Remova

40、l of Front Panel (Fig. 1)a. Remove the VOLUME control knob.b. Remove 8 screws (3) and 1 screw (4).c. Remove the Front Panel forward while releasing 2claws at the bottom.3. Removal of Sub Chassis (Fig. 1)Remove 4 screws (5) and then remove the SubChassis forward.4. Removal of DSP P.C.B. (Fig. 2)a. Re

41、move 6 screws (6) and 3 screws (7).b. Remove the DSP P.C.B. upward together with theShield Case.5. Removal of MAIN (4) P.C.B. (Fig. 2)Remove 2 screws (8). The Main (4) PCB can then beremoved.6. Removal of MAIN (1) P.C.B.a. Remove 3 screws (7), 2 screws (8), 2 screws (9) and11 screws (0). (Fig. 2)b.

42、Remove 2 screws (A) and 1 screw (B). (Fig. 3)c. To check the MAIN (1) P.C.B., spread a rubber sheetand a cloth over it. Then place the MAIN (1) P.C.B.upside down on the cloth for checking it. (Fig. 4)Fig. 1Fig. 3Fig. 2Top CoverSub ChassisFront panel112343555ClawMAIN (4) P.C.BSheild case(DSP P.C.B)66

43、670000089MAIN (1) P.C.BABFig. 4Note:When DSP P.C.B., MAIN (4) P.C.B. and MAIN (1)P.C.B. have been removed from the chassis, theground connection becomes open. Connect the groundof each P.C.B. to the chassis by using a lead wire.RX-V420/RX-V420RDS/HTR-5440/HTR-5440RDSRX-V420/RX-V420RDS/HTR-5440/HTR-5

44、440RDS9I SELF DIAGNOSIS FUNCTION (DIAG)There are 14 DIAG menu items each of which has sub-menu items. Listed in the table below are menu items and sub-menuitems.No DIAG menusub-menuRemote control code (key)1DSP THROUGH1. ANALOG BYPASS7A-88 (PRG 1)2. M, C, R, SW CH7A-89 (PRG 2)3. Main HPF7A-8A (PRG 3

45、)4. FULL BIT5. FULL BIT F2FRONT CH1. FRONT NORMAL7A-8B (PRG 4)2. FRONT MIX7A-8C (PRG 5)3RAM THROUGHRAM 0dB (2ch/Multi)7A-10 (PRESET+)4PRO LOGICYSS9287A-8D (PRG 6)5MARGIN CHECK1. MAIN 3dB Margin7A-11 (PRESET-)2. MAIN 12dB Margin7A-12 (P. PAGE)3. MAIN 18dB Margin7A-0C (CD FW)6MAIN MIX1. CENTER - MAIN7

46、A-00 (TAPE PLAY)2. SW - MAIN7A-8E (PRG 7)7OTHER INPUTEXTERNAL DECODER7A-8F (PRG 8)8DISPLAY CHECK1. VFD DISP OFF (All segments OFF)7A-01 (TAPE RW)2. VFD DISP ALL (All segments ON 100%)7A-02 (TAPE FW)3. VFD DIMMER (All segments ON 50%)4. CHECKED PATTERN1 (ON in lattice)7A-03 (TAPE STOP)5. CHECKED PATT

47、ERN2 (ON in lattice)9MANUAL TEST1. TEST ALL7A-90 (PRG 9)2. TEST MAIN L7A-04 (TAPE PAUSE)3. TEST CENTER7A-05 (TAPE MUTE)4. TEST MAIN R7A-06 (TAPE A/B)5. TEST REAR R7A-07 (TAPE DIR A)6. TEST REAR L7A-08 (CD PLAY)7. TEST LFE7A-09 (CD STOP)10PRESET1. PRESET INHIBIT (memory initialization inhibited)2. PR

48、ESET RESERVED (memory initialized)7A-57 (SLEEP)11AD DATA CHECK1. DC/PS (protection)7A-0B (CD SKIP-)2. IMP/PL (impedance/power limiter)3. 0/1/2 (panel key)12IF STATUS1. IST (internal status)2. CS1 (channel status 1)3. CS2 (channel status 2)4. CS3 (channel status 3)5. CS4 (channel status 4)6. CS5 (cha

49、nnel status 5)7. BI1 (BSI-DD 1)8. BI2 (BSI-DD 2)9. BI3 (BSI-DD 3)10. BI4 (BSI-DD 4)11. BS1 (BSI-DTS 1)12. BS2 (BSI-DTS 2)13. BS3 (BSI-DTS 3)14. BS4 (BSI-DTS 4)15. YS1 (YSS928-1)16. YS2 (YSS928-2)17. YS3 (YSS928-3)13DSP RAM CHECKBUS CHECK7A-0A (CD SKIP+)14VERSION/CHECK SUM/PORT1. VER. (Version inform

50、ation)7A-0D (CD REW)2. 1/2 (Checksum 1/2)3. PORT (Port check)RX-V420/RX-V420RDS/HTR-5440/HTR-5440RDSRX-V420/RX-V420RDS/HTR-5440/HTR-5440RDS10 Starting DIAGPress the “POWER ” (STANDBY/ON) key of the main unit while pressing the“FM/AM ” key and the “INPUT MODE ” key simultaneously, and DIAG will beact