Yamaha-DSPA595A-avr-sm 维修电路原理图.pdf

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1、SERVICE MANUALIMPORTANT 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 YAMAHAProducts, are already known and understood by the users, and have

2、 therefore not been restated.WARNING:Failure to follow appropriate service and safety procedures when servicing this productmay result in personal injury, destruction of expensive components, and failure of theproduct to perform as specified. For these reasons, we advise all YAMAHA productowners tha

3、t any service required should be performed by an authorized YAMAHARetailer or the appointed service representative.IMPORTANT:The presentation or sale of this manual to any individual of firm does not constituteauthorization, certification or recognition of any applicable technical capabilities,or es

4、tablish 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, and service departments of YAMAHA are continually striving to improve YAMAHA products.Modifications are, therefore, inevitab

5、le and specifications are subject to change without notice or obligationto retrofit. Should any discrepancy appear to exist, please contact the distributors Service Division.WARNING:Static discharges can destroy expensive components. Discharge any static electricityyour body may have accumulated by

6、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 beforeyou apply power to the unit.100678AV AMPLIFIERDSP-A595aTO SERVICE PERSONNEL . 1REMOTE CONTROL PANELS. 1REAR PANE

7、LS . 2SPECIFICATIONS. 34INTERNAL VIEW . 5DISASSEMBLY PROCEDURES . 5SELF DIAGNOSIS FUNCTION . 617FACTORY PRESET . 18ICONTENTSAMP ADJUSTMENT . 19IC DATA .2030DISPLAY DATA . 31BLOCK DIAGRAM. 3233PRINTED CIRCUIT BOARD . 3447SCHEMATIC DIAGRAM . 4853PARTS LIST . 5467REMOTE CONTROL TRANSMITTER . 68RadioFan

8、s.CN 收音机爱 好者资料库1DSP-A595aI TO SERVICE PERSONNEL1. Critical Components information.Components having special characteristics are marked and must bereplaced with parts having specifications equal to those originallyinstalled.2. Leakage Current Measurement (For 120V Model only).When service has been co

9、mpleted, it is imperative that you verify thatall exposed conductive surfaces are properly insulated from supplycircuits.Meter impedance should be equivalent to 1500 ohm shunted by 0.15F.Leakage current must not exceed 0.5mA.Be sure to test for leakage with the AC plug in both polarities.WARNING: CH

10、EMICAL CONTENT NOTICE!The solder used in the production of this product contains LEAD. In addition, other electrical/electronic and/or plastic (whereapplicable) components may also contain traces of chemicals found by the California Health and Welfare Agency (and possiblyother entities) to cause can

11、cer and/or birth defects or other reproductive harm.DO NOT PLACE SOLDER, ELECTRICAL/ELECTRONIC OR PLASTIC COMPONENTS IN YOUR MOUTH FOR ANY REASONWHATSOEVER!Avoid prolonged, unprotected contact between solder and your skin! When soldering, do not inhale solder fumes or expose eyesto solder/flux vapor

12、!If you come in contact with solder or components located inside the enclosure of this product, wash your hands before handlingfood.I REMOTE CONTROL PANELSM R and T modelsM B and G modelsWALLOUTLETEQUIPMENTUNDER TESTAC LEAKAGETESTER OREQUIVALENTINSULATINGTABLERAV174V383640 USRAV175V38650 EURadioFans

13、.CN 收音机爱 好者资料库2DSP-A595aM T modelM B modelM G modelM R modelI REAR PANELS3DSP-A595aI SPECIFICATIONSIAUDIO SECTIONMinimum RMS Output Power Per Channel(Power Amp. Section)MAIN L/R, REAR L/R20Hz to 20kHz, 0.04% THD, 865W+65W1kHz, 0.07% THD, 880W+80WCENTER20Hz to 20kHz, 0.04% THD, 865W1kHz, 0.07% THD, 8

14、80WMaximum Power (EIAJ)R, T models onlyMAIN L/R, REAR L/R1kHz, 10% THD, 8105W+105WCENTER, 1kHz, 10% THD, 8105WDynamic Power Per Channel (IHF)MAIN L/R8/6/4/2 90W+90W/110W+110W/135W+135W/160W+160WDIN Standard Output Power Per ChannelG model onlyMAIN L/R, 1kHz, 0.7% THD, 4110W+110WIEC PowerG model only

15、MAIN L/R, 1kHz, 0.04% THD, 875W+75WPower Band WidthMAIN L/R, 0.1% THD, 35W, 810Hz to 50kHzDamping Factor (SPEAKER A)MAIN L/R, 20Hz to 20kHz, 860Input Sensitivity/Input ImpedancePHONO (MM)2.5mV/47kCD etc.150mV/47kMAIN L/R (EXTERNAL DECODER)150mV/47kCENTER150mV/40kSURROUND L/R150mV/40kSUB WOOFER150mV/

16、40kMaximum Input Signal Level (1kHz)PHONO (MM), 0.1% THD100mVCD etc. (EFFECT ON), 0.5% THD2.2VOutput Level/Output ImpedanceREC OUT150mV/1.2kSUB WOOFER (MAIN SP : SMALL)2.1V/1.2KB,G models onlyPRE OUT4V/1.2KHeadphone Jack Rated Output/ImpedanceCD etc., Input=1kHz, 150mV, RL=80.5V/390Frequency Respons

17、e(20Hz to 20kHz)CD etc., MAIN00.5dBRIAA Equalization DeviationPHONO (MM)00.5dBTotal Harmonic Distortion(20Hz to 20kHz)PHONO (MM) to REC OUT (1V)0.02%CD etc.(EFFECT OFF) to MAIN SP OUT(35W/8)0.025%Signal-to-Noise Ratio(IHF-A Network)PHONO (MM), Input 5mV shorted, REC OUTR, T models86dBB, G models81dB

18、CD etc,(EFFECT OFF), Input 150mV shorted, SP OUT96dBResidual Noise(IHF-A Network)MAIN L/R, SP OUT150VChannel Separation(Vol. 30dB, EFFECT OFF)PHONO, Input shorted, 1kHz/10kHz60dB/55dBCD etc, Input 5.1k terminated, 1kHz/10kHz60dB/45dBTone Control CharacteristicsBASS: Boost/Cut10dB(50Hz): Turnover Fre

19、quency350HzTREBLE: Boost/Cut10dB(20kHz): Turnover Frequency3.5kHzFilter CharacteristicsMAIN, REAR SP SMALL : H.P.F.fc=90Hz, 12dB/oct.SUB WOOFER : L.P.F.fc=90Hz, 18dB/oct.IVIDEO SECTIONVideo Signal TypeR modelNTSC/PALT, B, G modelsPALVideo Signal Level1Vp-p/75S-Video Signal LevelY:1Vp-p/75,C:0.286Vp-

20、p/75Maximum Input Level1.5Vp-pSignal-to-Noise Ratio50dBMonitor Output Frequency Response(3dB) 5Hz10MHzIGENERALPower SupplyR modelAC110/120/220/240V, 50/60HzT modelAC220V, 50HzB, G modelsAC230V, 50HzPower ConsumptionR, T models310WB, G models300WMaximum Power ConsumptionR model only5CH Simultaneous o

21、utput, 10% THD650WAC OutletR, T models, Switched x 3100W max(Total)B model, Switched x 1100W maxG model, Switched x 2100W max(Total)Dimensions(W x H x D)435 x 151 x 391mm(17-1/8 x 5-15/16 x 15-3/8)Weight12.5kg(27Ibs. 9 oz)AccessoriesRemote Control Transmitter x 1Battery (siza AA, R06) x 2* Specifica

22、tions subject to change without notice.R . General modelB . British modelT. China modelG . European model4DSP-A595aG DIMENSIONSUnits: mm (inch)21.5(7/8)435(17-1/8)349.5(13-3/4)391(15-3/8)130(5-3/32)151(5-15/16)20(13/16)21(27/32)WARNINGDo not change the IMPEDANCE SELECTOR switchsetting while the powe

23、r to this unit is on, otherwisethis unit may be damaged.IMPEDANCE SELECTORManufactured under license from Digital Theater Systems, Inc. US Pat. No. 5,451,942 and other wirld-wide patents issued and pending. DTS, DTS Digital Surround, are trademarks of Digital Theater Systems, Inc. Copyright 1996 Dig

24、ital Theater Systems, inc. All rights reserved.5DSP-A595aI DISASSEMBLY PROCEDURES(Remove parts in disassembly order as numbered.)1. Removal of Top CoverRemove 4 screws (1) and 4 screws (2) in Fig. 1.2. Removal of Front Panela. Remove 5 knobs.b. Remove 6 screws (3) in Fig. 1.Fig.11 POWER TRANSFORMER2

25、 P.C.B. MAIN (3)3 P.C.B. OPERATION (7)(R, T models only)4 P.C.B. OPERATION (3)5 P.C.B. MAIN (4)6 P.C.B. MAIN (8)7 P.C.B. OPERATION (6)8 P.C.B. MAIN (2)9 P.C.B. MAIN (1)0 P.C.B. VIDEOA P.C.B. INPUT (1)B P.C.B. INPUT (3)C P.C.B. MAIN (5)D P.C.B. OPERATION (5)E P.C.B. OPERATION (4)F P.C.B. MAIN (7)G P.

26、C.B. OPERATION (1)H P.C.B. MAIN (6)I P.C.B. INPUT (4)J P.C.B. OPERATION (2)K P.C.B. DSPI INTERNAL VIEWFront PanelTop Cover1111111111222223333333333Knobs1 23 4 567890ABDEFGHIJKC#14#8#7#13#96DSP-A595aI SELF DIAGNOSIS FUNCTION1. PURPOSE AND OPERATIONThe DSP-A595a has a Self Diagnosis Function to locate

27、 a faulty part, if any, by inspecting and takingmeasurements.There are 11 main items in the diagnostic menu and some of them have sub-menu items as listed below.No.1234567891011SUB MENU1. MAIN BYPASS2. DSP 0dB1. YSS918SRAM2. YSS9183. DSP FULL BIT1. STATUS (BINARY FORM)1. CENTER LARGE2. EFFECT OFF1.

28、MAIN : SMALL 0dB2. MAIN : LARGE 0dB3. MAIN : LARGE 10dB4. LFE/BASS : MAINCENTER : NONE5. LFE/BASS : MAIN6. LFE/BASS : SWFR7. CENTER : NONE8. CENTER : SMALLREAR : SMALL9. FRONT MIX1. EFFECT OFF2. VFD DISP OFF3. VFD DISP ALL4. CHECKED PATTERN5. RELEASE DATE1. ALL2. MAIN L3. CENTER4. MAIN R5. REAR R6.

29、REAR L7. LFE1. INHIBIT(Inhibit Memory Init)2. RESERVED (Init. Memory)1. 2. KEY3. TUNING SIGNAL5. PS PROTECTION1. DSP CPU STATUS2. CHANNEL STATUS3. VERSION INFORMATION4. CHECK SUM5. BSI0 (AC3/DTS)6. BSI1 7. BSI28. BSI39. BSI4 10. BSI5 1. MAIN MC CHECK SUM2. SUB MC CHECK SUM3. MAIN M.C. VERSION4. SUB

30、M.C. VERSION5. PORT INFORMATION6. EXITMAIN MENUANALOG THROUGHDSP THROUGHAC3/DTS THROUGHPRO LOGICSPEAKERS SETEFFECT OFF /DISPLAY CHECKMANUAL TESTFACTORY PRESETAD DATA CHECKSTATUSVERSION CHECK /DSP CPU SUM /EXITREMOTE CONTROL CODE (KEY)7A88 (1 DSP mode) 7A89 (2 DSP mode) 7A8A (3 DSP mode) 7A8B (4 DSP

31、mode)7A8C (5 DSP mode)7A8D (6 DSP mode)7A8E (7 DSP mode)7A8F (8 DSP mode)7A90 (9 DSP mode)7A91 (0 DSP mode) 7A12 (ENTER DSP mode) 4. DC PROTECTION 7DSP-A595aSTANDBY/ON+SETMENUTIME/LEVELINPUT MODE1.2.3.4.5.6.7.EFFECT LEVEL:MUTING: OFFINPUT (VIDEO): DVD/LD (DVD/LD)CENTER SPEAKER: LARGEREAR SPEAKER: LA

32、RGEMAIN SPEAKER: LARGELFE/BASS OUT: SWFRCHANNELCENTERR SURL SURSWFRLEVEL (dB)0000C. Start-up displayThe protection function information appears on the front panel display of the main unit.2. BEGINNING AND CANCELLATION(1) STARTING UP THE FUNCTION AND THE DISPLAYAfter starting up, menu No. 1 is select

33、ed.A. How to start diagnostic programUsing the front panel keys of the main unit.and then press the STANDBY/ON key (Step 2).Plug in the AC power cord , and, with Power OFF, hold down the INPUT MODE and + keys simultaneously (Step 1), Submenu No. 1 of the Diagnosis Main Menu No. 1 will start.B. Setti

34、ngs for start-up of diagnostic programThe settings used when starting the diagnostic program are as follows.+ keySTANDBY/ON keyINPUT MODE keyFRONT PANELStep2. Press the STANDBY/ON keyStep1. Hold down the INPUT MODE and + key simultaneously.8DSP-A595aG History of protection functionEach case of the h

35、istory of the protection function is displayed as shown below.Appears when the protection function has not been activated.Appears when the current protection function has been activated.When power is turned on in an abnormal status, the power relaywill come on, protection will operate immediately, a

36、nd power willturn off.Appears when the power protection function has been activated.For the % value, the voltage at that point is shown by 5V/100%.When power is turned on in an abnormal status, power will turn offafter half a second.Appears when the power amp DC protection function has been activate

37、d.For the % value, the voltage at that point is shown by 5V/100%.When power is turned on in an abnormal status, power will turn offafter two seconds.G FL display at start-up of diagnostic programWhen the diagnostic program has started, the history (*2) of the protection function (*1) is displayed. I

38、f the protectionfunction has been activated in the past, the type and voltage value are displayed. After a few seconds the diagnosisfunction menu will appear.(*1) If a faulty condition is detected such as excessive current, a bad power supply or excessive amplifier DC offset, the Power will be switc

39、hed OFF automatically.(*2) The protection records will be cleared when RESERVED is selected in diagnosis menu No. 8 and FACTORYPRESET is engaged.1 DVD/LDNO PROTECT1 DVD/LDI PROTECT1 DVD/LDPS : 21%1 DVD/LDDC : 19%(2) EXITING METHODThe diagnosis function can be exited by any of the following procedure

40、s. Take care with the setting of backup memoryinitialization menu (diagnosis No. 8) when releasing the diagnosis function:1. Select diagnosis menu No. 11/submenu No. 6 EXIT.2. Press the STANDBY/ON key on the main unit or STANDBY key on the remote control to turn power off.9DSP-A595aG Selection by us

41、ing the remote control unitThe remote control codes in the menu list (see right columnon page 6) correspond to the DSP program test and effect keys. See the figure on the right.3. OPERATION AND DISPLAY WHEN STARTING DIAGNOSIS FUNCTION(1) Selection of diagnostic menuThe diagnostic menu and the sub-me

42、nu can be selected by using the front panel keys of the main unit or the remotecontrol unit.(2) Other functions available while diagnosis function is activeListed below are the other functions available while the diagnosis function is active. Selecting input source (Tape monitor/Ext. decoder) Adjust

43、ing effect level (Center, Rear, Subwoofer) Adjusting master volume Muting on/off Power on/off(3) Diagnosis default statusWhen not otherwise specified, default settings and values in each menu are as follows: All “SPEAKERS” : LARGE ALL electronic VRs : 0dB DYNAMIC RANGE : MAX LFE LEVEL : 0dB (DOLBY D

44、IGITAL, DTS) CENTER DELAY : 0msG Selection by using the front panel keysThe main menu can be changed cyclically by using the TV SPORTS and DISCO keys, and the submenu,by using the ROCK CONCERT and CONCERT HALL keys. The DISCO or CONCERT HALL key will increasethe main or submenu number.TVSPORTSDISCOR

45、OCKCONCERTCONCERTHALLFRONT PANELMain menuForwardReverseSub menuForwardReverse7ADSP10DSP-A595a4. CONTENTS OF DIAGNOSIS FUNCTIONThis section describes the contents of the self diagnosis function in detail. No.1 ANALOG THROUGHThe input is fixed to analog (A/D). There are two submenus.1. MAIN BYPASSThe

46、MAIN L/R signals bypass the analog circuits to be output.For CENTER/LFE, FRONT L/R and REAR L/R, the MAIN L/R signals via the DSP are output without being processed (through). (Remote control code 7A-88: 1 key DSP mode): This shows that the device is not operating.2. DSP 0dBMAIN L/R, CENTER/LFE, FRO

47、NT L/R and REAR L/R pass through the DSP without beingprocessed.: This shows that the device is not operating.DIR2CODEC.DAAK4526AYM3436CODEC.ADAC3D2av(YSS918)AK4526ADECODERDAAK43201M SRAMDSPANALOG INL/RL/RFRONT RREAR LREAR RCENTERSUBWOOFERL/RL/RL/RDIGITAL INFRONT LMAIN RMAIN LDIR2CODEC.DAAK4526AYM34

48、36CODEC.ADAC3D2av(YSS918)AK4526ADECODERDAAK43201M SRAMDSPANALOG INL/RL/RFRONT RREAR LREAR RCENTERSUBWOOFERL/RL/RL/RDIGITAL INFRONT LMAIN RMAIN L1 DVD/LDDSP 0DB1 DVD/LDMAIN BYPAS INPUT : DVD/LD (Analog signal)(Lch and Rch, 1KHz, 20dBV) OUTPUT : SPEAKERSMAIN L :23.8 dBVREAR L : 23.7 dBVMAIN R : 23.8 d

49、BVREAR R : 23.7 dBVCENTER: 23.7 dBV INPUT : DVD/LD (Analog signal)(Lch and Rch, 1KHz, 20dBV) OUTPUT : SPEAKERSMAIN L :23.7 dBVREAR L : 23.6 dBVMAIN R : 23.7 dBVREAR R : 23.6 dBVCENTER: 23.6 dBV11DSP-A595aNo.2 DSP THROUGHThe input is automatically discriminated by signal detection and switched with p

50、riorities AC-3 (DOLBY DIGITAL)DTS Digital SurroundAudioanalog. There are the following three submenus.1. YSS918-SRAMMAIN L/R are input to the DSP via AC3D2av, pass through SRAM, and are then output to all channels withoutbeing processed. (Remote control code 7A-89: 2 key DSP mode)2. YSS918MAIN L/R a