Yamaha-DSPAX620-avr-sm 维修电路原理图.pdf

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1、AV AMPLIFIER100763This 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, and have therefore n

2、ot 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 thesereasons, we advise all YAMAHA product owners that any servi

3、ce required should be performed by anauthorized YAMAHA Retailer or the appointed service representative.IMPORTANT:The presentation or sale of this manual to any individual or firm does not constitute authorization, certificationor recognition of any applicable technical capabilities, or establish a

4、principle-agent relationship of anyform.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,inevitable and spec

5、ifications are subject to change without notice or obligation to retrofit. Should any discrepancy appear to exist,please contact the distributors Service Division.WARNING:Static discharges can destroy expensive components. Discharge any static electricity your body may haveaccumulated by grounding y

6、ourself to the ground buss in the unit (heavy gauge black wires connect to thisbuss).IMPORTANT:Turn the unit OFF during disassembly and part replacement. Recheck all work before you apply power to theunit.IMPORTANT NOTICEDSP-AX620SERVICE MANUALI CONTENTSTO SERVICE PERSONNEL . 1FRONT PANEL . 1REAR PA

7、NELS . 2SPECIFICATIONS .3 5INTERNAL VIEW . 5DISASSEMBLY PROCEDURES .6 8SELF DIAGNOSIS FUNCTION.9 27AMP CHECK . 28IC DATA .29 36DISPLAY DATA .37 38PIN CONNECTION DIAGRAM . 39BLOCK DIAGRAM .40 43PRINTED CIRCUIT BOARD .44 67SCHEMATIC DIAGRAM .68 73PARTS LIST .74 92REMOTE CONTROL TRANSMITTER.93 95DSP-AX

8、620RadioFans.CN 收音机爱 好者资料库DSP-AX620DSP-AX620I TO SERVICE PERSONNELCritical Components InformationComponents having special characteristics are marked Zand must be replaced with parts having specifications equalto those originally installed.AC LEAKAGETESTER OREQUIVALENTEQUIPMENTUNDER TESTINSULATINGTA

9、BLEWALLOUTLET1IMPEDANCE SELECTORWARNINGDo not change the IMPEDANCE SELECTORswitch setting while the power to this unit ison, otherwise this unit may be damaged.I FRONT PANELSILENTVIDEO AUXPHONESS VIDEOVIDEOL AUDIO ROPTICAL6CH INPUTINPUT MODEINPUTVOLUMEEFFECTSET MENUDSPPROGRAMBASSTREBLESPEAKERSABOFFO

10、NOFFONSTANDBY/OND I G I T A LBASSEXTENSION+SURROUNDD I G I TA L+A/B/C/D/ERadioFans.CN 收音机爱 好者资料库DSP-AX620DSP-AX6202M R, T modelsI REAR PANELS240V50M B modelM G modelDSP-AX620DSP-AX6203I GENERALPower SupplyB, G models . . . . . . . . . . . . . . . . . . . . . . . AC 230V, 50HzR, T models . . . . . .

11、. . . . . AC 110/120/220/240V, 50/60HzPower Consumption . . . . . . . . . . . . . . . . . . . . . . . . . . . 260WStandby Power ConsumptionB, G models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.9WMaximum Power Consumption (R model only) . . . . . 610WAC OutletsR, T models, Swi

12、tched x 2 . . . . . . . . . . . 50W max (Total)G model, Switched x 2 . . . . . . . . . . . . . 100W max (Total)B mode, Switched x 1 . . . . . . . . . . . . . . . . . . . . 100W maxDimensions (W x H x D) . . . . . . . . . . . . . 435 x 151 x 390mm(17-1/8” x 5-15/16” x 15-3/8”)Weight . . . . . . . . .

13、 . . . . . . . . . . . . . . . . . . 10.5 kg (23 lbs 2oz)Finish . . . . . . . . . . . . . . . . . . . . . . . Black color (B, G models)Gold color (R, T, G models)Titanium color (G model)Accessories . . . . . . . . . . . . Remote Control Transmitter x 1Battery (size AAA, R03) x 4* Specifications subj

14、ect to change without notice.R . . . . . . . General modelT . . . . . . . . . China modelB . . . . . . . . British modelG . . . . . European modelI AUDIO SECTIONMinimum RMS Output Power per ChannelMAIN, 20Hz to 20kHz, 0.06% THD, 8 . . . . . 90W+90WCENTER, 20Hz to 20kHz, 0.06% THD, 8 . . . . . . . 90

15、WREAR, 20Hz to 20kHz, 0.06% THD, 8 . . . . . 90W+90WMinimum RMS Output Power per ChannelMAIN, 1kHz, 0.06% THD, 8 . . . . . . . . . . . 100W+100WCENTER, 1kHz, 0.06% THD, 8 . . . . . . . . . . . . . . 100WREAR, 1kHz, 0.06% THD, 8 . . . . . . . . . . . 100W+100WMaximum Power per Channel (R, T models on

16、ly)MAIN, 1kHz, 10% THD, 8, EIAJ . . . . . . . . . 115W+115WCENTER, 1kHz, 10% THD, 8, EIAJ . . . . . . . . . . . 115WREAR, 1kHz, 10% THD, 8, EIAJ . . . . . . . 115W+115WDynamic Power per ChannelMAIN, 8/6/4/2 . . . . . . . . . . . . . . . . . . 120/140/175/210WDIN Standard Output Power per Channel ( G

17、 model only)MAIN, 1kHz, 0.7% THD, 4 . . . . . . . . . . . . 130W+130WCENTER, 1kHz, 0.7% THD, 4 . . . . . . . . . . . . . . . 130WREAR, 1kHz, 0.7% THD, 4 . . . . . . . . . . . . 130W+130WIEC Power (G model only)MAIN, 1kHz, 0.06% THD, 8 . . . . . . . . . . . 100W+100WDamping FactorMAIN, 20Hz to 20kHz,

18、 8 . . . . . . . . . . . . . . . . 80 or moreInput Sensitivity/ImpedancePHONO MM . . . . . . . . . . . . . . . . . . . . . . . . . . 2.5mV/47kCD, etc . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 150mV/47kEXT. DECODERMAIN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 150mV/

19、47kCENTER . . . . . . . . . . . . . . . . . . . . . . . . . . . 150mV/47kREAR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 150mV/47kSUBWOOFER . . . . . . . . . . . . . . . . . . . . . . 150mV/47kMaximum Input Signal LevelPHONO MM, 1kHz, 0.1% THD (Effect on) . . . . . . 100mVCD, etc, 1kH

20、z, 0.5% THD (Effect on) . . . . . . . . . . . . 2.2VOutput Level/ImpedanceREC OUT . . . . . . . . . . . . . . . . . . . . . . . . . . . 150mV/1.2kPRE OUT (B, G models only) . . . . . . . . . . . . . 2.1V/1.2kSUBWOOFER (MAIN SP : SMALL) . . . . . . . . . . . .4.0V/1.2kHeadphone Jack Rated Output/Impe

21、danceCD, etc (1kHz, 150mV, 8) . . . . . . . . . . . . . . . 0.4V/560Frequency ResponseCD, etc (10Hz to 100kHz, MAIN L/R) . . . . . . . . +0/-3.0dBRIAA Equalization DeviationPHONO MM (20Hz to 20kHz) . . . . . . . . . . . . . . . 00.5dBTotal Harmonic Distortion (20Hz to 20kHz)PHONO MM to REC OUT (1V)

22、. . . . . . . . . . . . . . . . 0.02%CD, etc, to SP OUT L/R (45W/8) . . . . . . . . . . . . . 0.06%Signal-to-Noise Ratio (IHF-A-Network)PHONO MM to REC OUT, Input Shorted 5mVR, T models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86dBB, G models . . . . . . . . . . . . . . . . . .

23、. . . . . . . . . . . . . 81dBCD, etc, to SP OUTInput Shorted 250mV (Effect off) . . . . . . . . . . . . . 100dBResidual Noise (IHF-A-Network)MAIN L/R, SP OUT . . . . . . . . . . . . . . . . . . . . . . . . . 150VChannel Separation (Vol. 30dB, Effect off)PHONO MM, Input Shorted, 1kHz/10kHz . . . . 6

24、0dB/55dBCD, etc, Input 5.1k Shorted, 1kHz/10kHz . . 60dB/45dBTone Control CharacteristicsBASS :Boost/cut . . . . . . . . . . . . . . . . . . 10dB (50Hz)Turnover Frequency . . . . . . . . . . . . . . . . 350HzTREBLE : Boost/cut . . . . . . . . . . . . . . . . . .10dB (20kHz)Turnover Frequency . . . .

25、 . . . . . . . . . . . 3.5kHzFilter CharacteristicsMAIN, REAR SP SMALL (H.P.F.) . . fc = 90Hz, 12dB/oct.SUBWOOFER OUT (L.P.F.) . . . . . . fc = 90Hz, 18dB/oct.Bass Extension . . . . . . . . . . . . . . . . . . . . . . . . . .+6dB (60Hz)I SPECIFICATIONSI VIDEO SECTIONVideo Signal TypeB, G models . .

26、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .PALR, T models . . . . . . . . . . . . . . . . . . . . . . . . . . . NTSC/PALComposite Video Signal Level . . . . . . . . . . . . . . 1Vp-p/75S-Video Signal LevelY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1Vp

27、-p/75C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .0.286Vp-p/75Component Signal LevelY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1Vp-p/75Cb/Cr . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .0.7Vp-p/75Video Maximum Input Level . . . .

28、 . . . . . . . . . . . . . .1.5Vp-pVideo Signal-to-Noise Ratio . . . . . . . . . . . . . . . . . . . . 50dBMonitor Output Frequency ResponseComposite Video Signal . . . . . . . . . . 5Hz 10MHz, 3dBS-Video Signal . . . . . . . . . . . . . . . . . 5Hz 10MHz, 3dBComponent Signal . . . . . . . . . . . .

29、 . . . DC 30MHz, 3dBDSP-AX620DSP-AX6204G DIMENSIONS352.5 (137/8)390 (155/16)16(5/8)435 (171/8)21(13/16)21.5(13/16)130(51/8)151(515/16)Units : mm (inch)Manufactured under license from Dolby Laboratories.Dolby Digital, AC-3, Pro Logic, and the double-Dsymbol V are trademarks of Dolby Laboratories. 199

30、2-1997 Dolby Laboratories. All rights reserved.Manufactured under license from Digital Theater Systems,Inc. US Pat. No. 5,451,942 and other world-wide patentsissued and pending. DTS, DTS Digital Surround, aretrademarks of Digital Theater Systems, Inc. copyright1996 Digital Theater Systems, inc. All

31、rights reserved.S: S video signalV: Composite video signalO: YESX: NO: NO CARECaution: Superimposing function is not usable for component signals.G SUPERIMPOSINGInput DVD, etc.OutputSuperimposingTerminalSignalMonitor connectionSOOO (On screen)VOXSOXXVOO (On screen)SOOO (On screen)VXXSOXXVXO (Blue ba

32、ck)SXXVOO (On screen)SXO (Blue back)VXO (Blue back)DSP-AX620DSP-AX6205I INTERNAL VIEWG SET MENU TABLENo.SET MENUPRESET VALUESETTING RANGES1.SPEAKER SET1ACENTER SPEAKERLARGELARGE/SMALL/NONE1BMAIN SPEAKERLARGELARGE/SMALL1CREAR L/R SPEAKERLARGELARGE/SMALL/NONE1DLFE/BASS OUTBOTHSUBWOOFER/MAIN/BOTH1EMAIN

33、 LEVELNORMALNORMAL/10dB2.L/R BALANCE0L 0 R (0.5 step) (L/R 10.0)3.HP TONE CTRLBASS : 0dB6dB +3dB (1dB step)TREBLE : 0dB6dB +3dB4.I/O ASSIGNING4ACOMPONENT VIDEO INPUTA : DVDDVD, D-TV/CBL, VCR1, VCR2/DVR, V-AUXB : D-TV/CBLD-TV/CBL, VCR1, VCR2/DVR, V-AUX4BOPTICAL OUT(1) : MD/CD-RDVD, MD/CD-R, D-TV/CBL,

34、 VCR1, VCR2/DVR, V-AUX, PHONO, CD, TUNER4COPTICAL IN(2) : MD/CD-RMD/CD-R, DVD, D-TV/CBL, VCR1, VCR2/DVR, PHONO, CD, TUNER(3) : DVDMD/CD-R, DVD, VCR1, VCR2/DVR, PHONO, CD, TUNER(4) : D-TV/CBLMD/CD-R, VCR1, VCR2/DVR, PHONO, CD, TUNER4DCOAXIAL IN(5) : CDMD/CD-R, DVD, D-TV/CBL, VCR1, VCR2/DVR, V-AUX, PH

35、ONO, CD, TUNER5.INPUT MODEDVD : AUTOAUTO/LAST6.DOLBY DIGITAL SET6ALFE LEVELSPEAKER : 0dB20dB 0dB6BDYNAMIC RANGESPEAKER : MAXMAX/STD/MIN7.DTS SETLFE LEVELSPEAKER : 0dB10dB +10dB8.SPEAKER DELAY TIMECENTER : 0ms0ms 5ms (1ms step)9.DISPLAY SETBLUE BACK : AUTOAUTO/OFFOSD SHIFT : 05 +5DIMMER : 04 010.MEMO

36、RY GUARDOFFON/OFFqw er tyui!0!1!2 !3 !4!5!8!90!6!7oqPOWER (1) P.C.B.wMAIN (6) P.C.B.eMAIN (5) P.C.B.rPOWER (4) P.C.B. (R, T only)tMAIN (7) P.C.B. (B, G only)yMAIN (3) P.C.B.uOPERATION (3) P.C.B.iOPERATION (5) P.C.B.oINPUT (4) P.C.B.!0DSP P.C.B.!1POWER (5) P.C.B. (B, G only)!2OPERATION (9) P.C.B.!3PO

37、WER (2) P.C.B.!4POWER (6) P.C.B. (R, T only)!5MAIN (4) P.C.B.!6MAIN (1) P.C.B.!7POWER (3) P.C.B.!8MAIN (2) P.C.B.!9INPUT (1) P.C.B.0INPUT (2) P.C.B.DSP-AX620DSP-AX6206I DISASSEMBLY PROCEDURES (Remove parts in the order as numbered.)1. Removal of Top CoverRemove 8 screws ( q and w ) and then remove t

38、he Top Cover in Fig. 1.2. Removal of Front Panel Unita. Remove 9 screws ( e, r and t ) in Fig. 1.b. Remove CB104, CB303 and ground wire.c. Lift 2 hooks and then remove the Front Panel Unit in Fig. 1.Fig. 1Fig. 2Fig.3DSP3. Removal of Sub Chassis UnitRemove 4 screws ( y ) and then remove the SubChassi

39、s Unit in Fig. 2.4. Removal of DSP P.C.B.a. Remove 4 screws ( u ) and then remove the ShieldCase Cover in Fig. 3.b. Remove 7 screws ( i and o ) and then remove theDSP P.C.B. in Fig. 3.wwterFront Panel UnitTop CoverqquyyHooksSub Chassis UnituiuioShield Case CoverDSP-AX620DSP-AX62075. Removal of Input

40、 (1)/(2) P.C.B.(Checking the Input (1)/(2) P.C.B. and Replacing Components)a. Remove the DSP P.C.B.b. Remove 1 screw ( !0 ) and then remove the Input (4) P.C.B. in Fig. 4.c. Remove 2 screws ( !1 ) and then remove the Operation (5) P.C.B. in Fig. 4.d. Remove 4 screws ( !2 ) and then remove the Operat

41、ion (3) P.C.B. in Fig. 4.e. Remove 7 screws ( !3 and !4 ) and then remove the Operation (2) P.C.B. in Fig. 4and 5.f. Remove 8 screws ( !5 and !6 ) and then remove the Input (1)/(2) P.C.B. in Fig. 4and 5.g. Place the INPUT (1)/(2) P.C.B. as shown in Fig. 6 and check them for operation.Note :When DSP

42、P.C.B., INPUT (1)/(4) P.C.B., OPE (2)/(3) P.C.B., and OPE (5) P.C.B. have beenremoved from the rear panel, the ground connection becomes open. Connect the ground ofeach P.C.B. to the chassis by using a lead wire.Fig. 4Fig. 5Fig.6INPUT (4)INPUT (1)INPUT (2)OPE (2)OPE (5)OPE (3)INPUT (1)INPUT (2)OPE (

43、2)OPE (5)OPE (3)INPUT (4)DSP!3x6!0!1x2!2x4!5x7!4!6ClothDSP-AX620DSP-AX62086. Removal of Main Chassis(Checking the Main (1) P.C.B. and Replacing Components)a. Remove the Front Panel Unit.b. Remove the Sub Chassis Unit.c. Remove the DSP P.C.B.Fig. 7Fig.8Fig.9d. Remove the Input (4) P.C.B, Operation (5

44、)/(3)/(2) P.C.B.and Input (1)/(2) P.C.B.e. Remove 6 screws ( !7, !8 and !9 ) and then remove theMain (5)/Power (1) P.C.B. in Fig. 7 and 8.f. Remove 4 screws ( 0 ) and then remove the PowerTransformer in Fig. 8.g. Remove 4 screws ( 1, 2 and 3 ) and then remove theMain Chassis in Fig. 7 and 8.h. Reins

45、tall the removed P.C.B. to the Rear Panel and tightenthem with screws.i.Set the Rear Panel and Front Panel upright as shown in Fig.9. At this time, use a box or the like to keep them horizontal.In this state, check the MAIN (1) P.C.B. and each of theother P.C.B. for operation.3!8!7!8Power Transforme

46、rRear PanelFront PanelMAIN (1)MAIN (5)POWER (1)!9012Use care so that the DSP ShieldCase and INPUT (1)/(2) P.C.B.will not be shorted.DSP-AX620DSP-AX6209I SELF DIAGNOSIS FUNCTIONThis product has a built-in self diagnosis function (DIAG) to facilitate inspection, measurement and determination of a faul

47、tyitem, if any. There are 14 DIAG menu items each of which has sub-menu items.Listed in the table below are menu items and sub-menu items.(Start-up and operation of DIAG menu are executed by using the main unit and its remote control unit.)DIAG menuDSP THROUGHFRONT CHRAM THROUGHPRO LOGICMARGIN CHECK

48、MAIN MIXOTHER INPUTDISPLAY CHECKMANUAL TESTFACTORY PRESETAD DATA CHECKIF STATUSDSP RAM CHECKVERSION/SUM A: P:Sub-menu1. ANALOG BYPASS2. M, C, R, SW ch3. Main HPF Check4. DSP Full Bit5. DSP Full Bit (F)6. DSP Full Bit -6dB1. Front Normal2. Front Mix1. 0dB (2ch/Multi)1. YSS9281. MAIN 3dB margin2. MAIN

49、 12dB margin3. MAIN 18dB margin1. Center Main2. SW Main1. External Decoder1. DISPLAY OFF2. DISPLAY ALL3. DISPLAY DIMMER(50%)4. CHECKED PATTERN 15. CHECKED PATTERN 21. ALL2. MAIN L3. CENTER4. MAIN R5. REAR R6. REAR L7. LFE1. INHIBIT (memory initialization inhibited)2. RESERVED (memory initialized)1.

50、PANEL KEY0, 12. PANEL KEY2, PL3. DC PROTECTION, PS PROTECTION1. Inside status2. CH status 13. CH status 24. CH status 35. CH status 46. CH status 57. BSI-DD 18. BSI-DD 29. BSI-DD 310. BSI-DD 411. BSI-DTS 112. BSI-DTS 213. BSI-DTS 314. BSI-DTS 415. YSS928-116. YSS928-217. YSS928-31. BUS CHECK1. Versi