Technics-SADA15-avr-sch 维修电路原理图.pdf

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1、Service ManualTOP NEXTOrder No. MD0105119C1A2AV Control Stereo Receiver lSA-DA15Color(K) . Black Type(N) . Gold TypePP . U.S.A. and Canada FM Tuner SectionFrequency range87.9-107.9 MHzSensitivity11.2 dBf (2V, IHF58)50 dB quieting sensitivityMONO18.3 dBf (4.5V, IHF58)STEREO38.3 dBf (45V, IHF58)Total

2、harmonic distortionMONO0.2% STEREO0.3% S/NMONO73 dBSTEREO67 dBFrequency response20 Hz-15 kHz,+1 dB, -2 dBAlternate channel selectivity65 dBCapture ratio1.5 dBImage rejection at 98 MHz40 dBSpurious response rejection at 98 MHz75 dBAM suppression50 dBStereo separation1 kHz40 dB10 kHz30 dBAntenna termi

3、nal75 (unbalanced) AM Tuner SectionFrequency range530-1710 kHzSensitivity20V, 330V/mSelectivity55 dBIF rejection (at 1000 kHz)50 dB Video SectionOutput voltage at 1 V input (unbalanced)10.1 Vp-pMaximum input voltage1.5 Vp-pInput/output impedance75 Amplifier SectionRated minimum sine wave RMS power o

4、utput20 Hz-20 kHz both channels driven0.05% total harmonic distortion100 W per channel (6)1 kHz continuous power output both channels driven0.05% total harmonic distortion105 W per channel (6)Total harmonic distortionrated power at 20 Hz-20 kHz0.05% (6)half power at 1 kHz0.03% (6)Power bandwidthboth

5、 channels driven, -3 dB10 Hz-100 kHz (6, 0.9%)Power output at the DVD 6CH operation20 Hz-20 kHz (each channels driven)0.05% total harmonic distortionFront2 x 100 W (6)Center100 W (6)Surround2 x 100 W (6)Low frequency damping factor30 (6)Load impedancepagina 1 van 229-11-2012file:/H:/Audio%20nieuw/T/

6、Technics/viewing/SGML_VIEW_DATA/NA/SA-DA15.RadioFans.CN 收音机爱 好者资料库 2001 Matsushita Electronics (S) Pte. Ltd. All rights reserved. Unauthorized copying and distribution is a violation of law. TOP NEXTFrontA or B4 - 8 A and B8 BI-WIRE6 - 8 Center6 - 8 Surround6 - 8 Frequency responsePHONORIAA standard

7、 curve0.8 dBCD, DVD, TV, VCR1, VCR2, VCR3, TAPE10 Hz-100 kHz,3 dBInput sensitivityPHONO0.4 mV (3 mV, IHF66)CD, DVD, TV, VCR1, VCR2, VCR3, TAPE27 mV (200 mV, IHF66)S/N (IHF A) (VGCA ON)PHONO80 dB (80 dB, IHF66)CD, DVD (L/R/C/LS/RS), TV, VCR1, VCR2, VCR3, TAPE113 dB (IHF A, Rated Power, S=2 V)90 dB (1

8、00 dB, IHF66)Input impedancePHONO47 k CD, DVD, TV, VCR1, VCR2, VCR3, TAPE22 k Tone controlsBASS50 Hz,+10 to -10 dBTREBLE20 kHz,+10 to -10 dBSubwoofer frequency response (-6 dB)7 - 200 Hz GeneralPower supplyAC 120 V, 60 HzPower consumption400 VA 310 WDimensions (W x H x D)430 x 158 x 370 mm(16-15/16”

9、 x 6-7/32” x 14-9/16”)Mass11.7 kg (25.8 lb.)Power consumption in standby mode:1 W DIN POWER (1 kHz T.H.D. 1%)2 X 100W (6)Notes: 1.Specifications are subject to change without notice./Mass and dimensions are approximate.2.Total harmonic distortion is measured by the digital spectrum analyzer.* Manufa

10、ctured under license from Dolby Laboratories.“Dolby”,“Pro Logic” and the double-D symbol are trademarks of Dolby Laboratories.* Manufactured under license from Digital Theater System.“DTS” and“DTS Digital Surround” are trademarks of Digital Theater System.pagina 2 van 229-11-2012file:/H:/Audio%20nie

11、uw/T/Technics/viewing/SGML_VIEW_DATA/NA/SA-DA15.RadioFans.CN 收音机爱 好者资料库1 Safety PrecautionTOP PREVIOUS NEXT(This “Safety Precaution” is applied only in U.S.A.)1. Before servicing, unplug the power cord to prevent an electric shock.2. When replacing parts, use only manufacturers recommended component

12、s for safety.3. Check the condition of the power cord. Replace if wear or damage is evident.4. After servicing, be sure to restore the lead dress, insulation barriers, insulation papers, shields, etc.5. Before returning the serviced equipment to the customer, be sure to make the following insulation

13、 resistance test to prevent the customer from being exposed to a shock hazard.lInsulation Resistance Test1. Unplug the power cord and short the two prongs of the plug with a jumper wire.2. Turn on the power switch.3. Measure the resistance value with ohmmeter between the jumper AC plug and each expo

14、sed metal cabinet part, such as screw heads, antenna, control shafts, handle brackets, etc. Equipment with antenna terminals should read between 3M and 5.2M toall exposed parts*. (Fig 1) Equipment without antenna terminals should read approximately infinity to all exposed parts. (Fig 2)*Note: Some e

15、xposed parts may be isolated from the chassis by design. These will read infinity.4. If the measurement is outside the specified limits, there is a possibility of a shock hazard. The equipment should be repaired and rechecked before it is returned to the customer.pagina 1 van 329-11-2012file:/H:/Aud

16、io%20nieuw/T/Technics/viewing/SGML_VIEW_DATA/NA/SA-DA15.pagina 2 van 329-11-2012file:/H:/Audio%20nieuw/T/Technics/viewing/SGML_VIEW_DATA/NA/SA-DA15.TOP PREVIOUS NEXTpagina 3 van 329-11-2012file:/H:/Audio%20nieuw/T/Technics/viewing/SGML_VIEW_DATA/NA/SA-DA15.2 Before Repair and AdjustmentTOP PREVIOUS

17、NEXTDisconnect AC power, discharge Power Supply Capacitors C1702, C703C706, C742, C901, C904 through a 10 , 5 W resistor to ground. DO NOT SHORT-CIRCUIT DIRECTLY (with a screw driver blade, for instance), as this may destroy solid state devices.After repairs are completed, restore power gradually us

18、ing a variac, to avoid over current.Current consumption at AC 120 V, 60 Hz in NO SIGNAL mode should be 4501000 mA.TOP PREVIOUS NEXTpagina 1 van 129-11-2012file:/H:/Audio%20nieuw/T/Technics/viewing/SGML_VIEW_DATA/NA/SA-DA15.3 Protection CircuitryTOP PREVIOUS NEXTThe protection circuitry may have oper

19、ated if either of the following conditions are noticed:lNo sound is heard when the power is turned on.lStops during a performance.The function of this circuitry is to prevent circuitry damage if, for example, the positive and negative speaker connection wires are “shorted”, or if speaker systems wit

20、h an impedance less than the indicated rated impedance ofthe amplifier are used.If this occurs, follow the procedure outlines below:1. Turn off the power.2. Determine the cause of the problem and correct it.3. Turn on the power once again after one minute.Note:When the protection circuitry functions

21、, the unit will not operate unless the power is first turned off and then on again.TOP PREVIOUS NEXTpagina 1 van 129-11-2012file:/H:/Audio%20nieuw/T/Technics/viewing/SGML_VIEW_DATA/NA/SA-DA15.4 AccessoriesTOP PREVIOUS NEXTAC power supply cord. 1 pc.AM Loop Antenna Set/. 1 set.FM Indoor Antenna. 1 pc

22、.Remote Control/Transmitter. 1 pc.TOP PREVIOUS NEXTpagina 1 van 129-11-2012file:/H:/Audio%20nieuw/T/Technics/viewing/SGML_VIEW_DATA/NA/SA-DA15.5.1 Front PanelTOP PREVIOUS NEXTTOP PREVIOUS NEXTpagina 1 van 129-11-2012file:/H:/Audio%20nieuw/T/Technics/viewing/SGML_VIEW_DATA/NA/SA-DA15.5.2 Remote Contr

23、olTOP PREVIOUS NEXTTOP PREVIOUS NEXTpagina 1 van 129-11-2012file:/H:/Audio%20nieuw/T/Technics/viewing/SGML_VIEW_DATA/NA/SA-DA15.5 Front Panel ControlsTOP PREVIOUS NEXT5.1 Front Panel5.2 Remote ControlTOP PREVIOUS NEXTpagina 1 van 129-11-2012file:/H:/Audio%20nieuw/T/Technics/viewing/SGML_VIEW_DATA/NA

24、/SA-DA15.6.1 Disassembly Procedure for each major P.C.B.TOP PREVIOUS NEXTStep 1 & Step 2 Unscrew and remove top cabinet as shown.pagina 1 van 1129-11-2012file:/H:/Audio%20nieuw/T/Technics/viewing/SGML_VIEW_DATA/NA/SA-DA15.Step 3 Remove all the screws.pagina 2 van 1129-11-2012file:/H:/Audio%20nieuw/T

25、/Technics/viewing/SGML_VIEW_DATA/NA/SA-DA15.Step 4 Remove the screws.Step 5 Remove the support bar (B).Step 6 Release the connectors CP506 and CP451.Step 7 Remove the screw.pagina 3 van 1129-11-2012file:/H:/Audio%20nieuw/T/Technics/viewing/SGML_VIEW_DATA/NA/SA-DA15.Step 8 Release the connector CP351

26、 and CP353.Step 9 Release the flat cable from CN901B. Take note of CN504, CN505 and CN902.pagina 4 van 1129-11-2012file:/H:/Audio%20nieuw/T/Technics/viewing/SGML_VIEW_DATA/NA/SA-DA15.Step 10 Remove all the screws and support bar (A).Step 11 Unscrew the nut from AL Panel and remove the Volume Knob.St

27、ep 12 Remove ll the screws and pull the Volume P.C.B. up as shown.Take note of CP501 and CP502.pagina 5 van 1129-11-2012file:/H:/Audio%20nieuw/T/Technics/viewing/SGML_VIEW_DATA/NA/SA-DA15.Step 13 Lift up Panel P.C.B. and remove all connectors.Step 14 Remove Tone Knob, Selector Ring, Light Guide and

28、unscrew the nut.Step 15 Remove all the screws./Take note of CP503.pagina 6 van 1129-11-2012file:/H:/Audio%20nieuw/T/Technics/viewing/SGML_VIEW_DATA/NA/SA-DA15.Step 16 Remove all the screws.Step 17 Release the AC In/Out P.C.B. catch.Step 18 Release the CP771 and pull out the rear panel in the directi

29、on shown.Step 19 Remove the screw, CN1001B, CN1002B and Shield Plate.pagina 7 van 1129-11-2012file:/H:/Audio%20nieuw/T/Technics/viewing/SGML_VIEW_DATA/NA/SA-DA15.Step 20 Release the CN702 and pull out the Surround P.C.B. in the direction shown./Take note of CN1201 to CN1204.Step 21 Release the CN354

30、 and pull out the Input Selector P.C.B. in the direction shown./Take note of CN401 to CN403.pagina 8 van 1129-11-2012file:/H:/Audio%20nieuw/T/Technics/viewing/SGML_VIEW_DATA/NA/SA-DA15.Step 22 Remove all the screws.Step 23 Release the CN102 and CN103 from the Phono P.C.B.pagina 9 van 1129-11-2012fil

31、e:/H:/Audio%20nieuw/T/Technics/viewing/SGML_VIEW_DATA/NA/SA-DA15.Step 24 Remove all the screws.Step 25 Release the CN751 and CN752 from the Power P.C.B. Pull out in the direction shown.pagina 10 van 1129-11-2012file:/H:/Audio%20nieuw/T/Technics/viewing/SGML_VIEW_DATA/NA/SA-DA15.TOP PREVIOUS NEXTpagi

32、na 11 van 1129-11-2012file:/H:/Audio%20nieuw/T/Technics/viewing/SGML_VIEW_DATA/NA/SA-DA15.6.2.1 Replacement of the Power IC and Regulator TransistorTOP PREVIOUS NEXTStep 1 Remove the top cabinet.pagina 1 van 729-11-2012file:/H:/Audio%20nieuw/T/Technics/viewing/SGML_VIEW_DATA/NA/SA-DA15.pagina 2 van

33、729-11-2012file:/H:/Audio%20nieuw/T/Technics/viewing/SGML_VIEW_DATA/NA/SA-DA15.Step 2 Cut the joints as shown below. (8 joints)pagina 3 van 729-11-2012file:/H:/Audio%20nieuw/T/Technics/viewing/SGML_VIEW_DATA/NA/SA-DA15.pagina 4 van 729-11-2012file:/H:/Audio%20nieuw/T/Technics/viewing/SGML_VIEW_DATA/

34、NA/SA-DA15.Step 3 Fold the joints. (8 joints)Step 4 Desolder the terminals of Power IC and Regulator Transistor.pagina 5 van 729-11-2012file:/H:/Audio%20nieuw/T/Technics/viewing/SGML_VIEW_DATA/NA/SA-DA15.Step 5 Remove all the screws and remove IC601. The PROTO Offset Screwdriver No.34-1/4 is recomme

35、nded for use in the application above.pagina 6 van 729-11-2012file:/H:/Audio%20nieuw/T/Technics/viewing/SGML_VIEW_DATA/NA/SA-DA15.Step 6 Remove all the screws at the rear panel and pull out Shield Plate, Surround P.C.B. and Input Selector P.C.B. from Main P.C.B.Step 7 Remove the two screws from IC60

36、2.TOP PREVIOUS NEXTpagina 7 van 729-11-2012file:/H:/Audio%20nieuw/T/Technics/viewing/SGML_VIEW_DATA/NA/SA-DA15.6.2.2 Installation of the bottom cover after replacementTOP PREVIOUS NEXTpagina 1 van 329-11-2012file:/H:/Audio%20nieuw/T/Technics/viewing/SGML_VIEW_DATA/NA/SA-DA15.pagina 2 van 329-11-2012

37、file:/H:/Audio%20nieuw/T/Technics/viewing/SGML_VIEW_DATA/NA/SA-DA15.Step 1 Upset the bottom cover.Step 2 Align the ribs of bottom cover into the bugs.Step 3 Prepare the screws to fix the bottom cover.TOP PREVIOUS NEXTpagina 3 van 329-11-2012file:/H:/Audio%20nieuw/T/Technics/viewing/SGML_VIEW_DATA/NA

38、/SA-DA15.6.2 Main Component Replacement ProceduresTOP PREVIOUS NEXT6.2.1 Replacement of the Power IC and Regulator Transistor6.2.2 Installation of the bottom cover after replacementTOP PREVIOUS NEXTpagina 1 van 129-11-2012file:/H:/Audio%20nieuw/T/Technics/viewing/SGML_VIEW_DATA/NA/SA-DA15.6 Disassem

39、bly and Main Component Replacement ProceduresTOP PREVIOUS NEXT“ATTENTION SERVICER”Some chassis components maybe have sharp edges. Be careful when diassembling and servicing.1. This section describes procedures for checking the operation of the major printed circuit boards and replacing the main comp

40、onents.2. For reassembly after operation checks or replacement, reverse the respective procedures./Special reassembly procedures are described only when required.3. Select items from the following index when checks or replacement are required.ContentlDisassembly Procedure for each major P.C.B. P.g.

41、711lMain Component Replacement Procedures1. Replacement of the Power IC and Regulator Transistor. P.g. 12132. Installation of the bottom cover after replacement. P.g. 136.1 Disassembly Procedure for each major P.C.B.6.2 Main Component Replacement Procedures6.2.1 Replacement of the Power IC and Regul

42、ator Transistor6.2.2 Installation of the bottom cover after replacementTOP PREVIOUS NEXTpagina 1 van 129-11-2012file:/H:/Audio%20nieuw/T/Technics/viewing/SGML_VIEW_DATA/NA/SA-DA15.7 Type Illustrations of ICs, Transistors& DiodesTOP PREVIOUS NEXTTOP PREVIOUS NEXTpagina 1 van 129-11-2012file:/H:/Audio

43、%20nieuw/T/Technics/viewing/SGML_VIEW_DATA/NA/SA-DA15. 1 M38B57MCA266 (80p)M38B57M6170F (80p) C0FBZJ000004 (44p)TC9482NRSN310R37A-P AN6558FNJM2115DNJM4580DDNJM4580EDTE1TC9163ANTC9162AN2SB621AQSTA2SD1915FTA2SA933SSTA2SC1740SSTARVTDTA113ZSTRVTDTA114ESTRVTDTC114ESTRVTDTC114YSTRVTDTA143XSTRVTDTC143XST1N

44、5402BM21RK306LFU1MTZJ10CTAMTZJ16CTAMTZJ30BTAMTZJ3R3ATAMTZJ3R9ATAMTZJ5R6BTAMTZJ6R2BTAMTZJ6R2CTA2SB1548PQAU2SD2374PQAUSLR325MCT31SLR325YCT31SLR325VCT312SK2880CTA11458NJM2279D17148BCEECBECBDSGBCE2SA1534AQRTA2SC3940AQSTABCEACaCathodeAnodeAnodeCathodeA CaMTZJ6R8BTAMTZJ7R5CTAMTZJ8R2CTAMTZJ18BTARVD1SS133TA

45、RB721Q40T771SS291TA1SR35400VACaCathodeAnodeCS49326-CLR (44p) SN74LV244APW (20p)SN7AHCT244PW (20p)SN74HCU04APW (14p)SNAHC1U04DBV DTA114YETL1BA62182SD2137PQTAPQ30RV11BCE261241BU2090ANJM2296D181691911428158 Terminal Functions of ICsTOP PREVIOUS NEXTlIC901 (M38B57MCA266) SYSTEM CONTROL/FL DRIVEPin No.Ma

46、rkI/OFunction12KEY2KEY1IKey Input 123THERM/OVLDIThermal/Over load input 4KEY 4IKey Input 45OVERLOAD2IThermal/Over load input 26FMSTIStereo signal detect terminal7WAKE-Wake up timer LED (Not used, open)8RDS DI-Control of RDS IC(Not used, open)9REMOTEIRemote control terminal10RESET-Reset detect termin

47、al11RDS CK-Control of RDS IC (CK) clock signal (Not used, open)12RDS DT-Control of RDS IC (DT) data signal (Not used, open)13GND-GND terminal14XINICrystal oscillator terminal (4 MHz)15XOUTOCrystal oscillator terminal (4 MHz)16VDD (+5V)-Power supply terminal +5V17LED CKOLED driver IC (CK) clock signa

48、l18LED DATAOLED driver IC (DT) data signal19SFC1ISFC mode encoder input 120SFC2ISFC mode encoder input 221SEL1ISelector encoder for input 122HOLDIBlackout detection terminal23SEL2ISelector encoder for input 224D.PASSODSP signal selector25RLYORelay control output26LOUDNESSOLoudness control output (No

49、t used, open)27-Not used28VEE-Power supply for FL driver29S/C SPOSurround/Center speaker control output30SP BOSpeaker B control output31SP AOSpeaker A control output32AF MUTEOMuting control output3348SEG16SEG1OFL segment signal output4958DEG1DEG10OFL digit signal output59INIT_INIDiode input initial

50、settings60VOL DOWNOVolume control output (Down)61VOL UPOVolume control output (Up)62VIDEO_C-Not used63IF DATAISerial data signal64LIMITTEROPower limitter control output65T CEOTuner control (CE) chip enable signal66T CKOSelector/Tuner (CK) clock signal67T DTOSelector/Tuner (DT) data signalpagina 1 va