Technics-SADV250-cs-sm 维修电路原理图.pdf

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1、http:/servis- Manual TOP NEXT ORDER NO. AD0103076C2 Stereo tuner/ amplifier lSA-DV250 Colour (S).Silver Type Areas EB.Great Britain. EG.Europe. System: SC-DV250 Because of unique interconnecting cables, when a compact requires service, send or bring in the entire system. SpecificationAmplifier Secti

2、on (Low frequency side) Power output DIN 100Hz, THD 1%, 8 both channels driven: 2x45W RMS 100Hz, THD 10%, 8 both channels driven: 2x65W Amplifier Section (High frequency side) Power output DIN 1kHz, THD 1%, 6 both channels driven: 2x25W RMS 1kHz, THD 10%, 6 both channels driven: 2x35W Power output (

3、prologic mode) DIN (front: high frequency) 1kHz, THD 1%, 6 both channels driven: 2x25W (front: low frequency) 100Hz, THD 1%, 8 both channels driven: 2x45W (surround) 1kHz, THD 1%, 8 both channels driven: 2x30W (center) 1kHz, THD 1%, 8: 60W RMS (front: high frequency) 1kHz, THD 10%, 6 both channels d

4、riven: 2x35W (front: low frequency) 100Hz, THD 10%, 8 both channels driven: 2x65W (surround) 1kHz, THD 10%, 8 both channels driven: 2x40W (center) 1kHz, THD 10%, 8: 80W Total harmonic distorition Rated power at 1kHz/ 6: 1% Half power at 1kHz/ 6: 0.1% Load impedance Front (high frequency): 6 (low fre

5、quency): 8 Surround: 8 Center: 8 FM tuner section Frequency range: 87.50-108.00MHz (0.05MHz steps) Sensitivity (S/N 26dB): 1.5V S/N: MONO 70dB (75dB, IHF) Antenna terminals: 75 (unbalance) AM tuner section RadioFans.CN 收音机爱 好者资料库http:/servis- To display the malfunction code TOP PREVIOUS NEXT Fig. 7-

6、1 TOP PREVIOUS NEXT U70 DVD: Automatically displays on the U70 DECK: tuner/amplifier when a malfunction occurs. Refer to Fig. 7-1. F61: Automatically displays on the tuner/amplifier when a malfunction occurs. Refer to Fig. 7-1. RadioFans.CN 收音机爱 好者资料库http:/servis- To return to the normal display TOP

7、 PREVIOUS NEXT 1. For U70 DVD/U70 DECK Press an any operation button on the tuner/amplifier. To re-display the code, switch the power off (POWER STANDBY button), and then switch power back on again. 2. For F61 If F61 is displayed, the power will automatically be switched off and the standby indicato

8、r will light up. F61 will be displayed for 3 seconds, and then the clock will be displayed. To re-display the code, switch the power on. F61 will be re-displayed, and then after 3 seconds the clock will be displayed and the power will automatically switch off. TOP PREVIOUS NEXT http:/servis- U70 DVD

9、, U70 DECK/(displayed automatically) TOP PREVIOUS NEXT lProblem or condition A bus-line communications error has occurred as a result of the flat cables being inserted incorrectly, thus preventing the system from operating. If U70 is displayed on the tuner/amplifier, the Cassette deck or DVD Changer

10、 cannot be operated by remote control. lCorrection Procedure 1. To check for correct insertion of the flat cables. nInsert each connectors until you hear a click. nInsert the flat cables at the back of the unit in the order indicated. Refer to Fig. 8-2. Make sure the white side of the cables is on y

11、our right side. Refer to Fig. 8-3. Fig. 7-2. Fig. 7-3. 2. Breakage of the flat cables. (Check and replace.) 3. If the problem is not corrected by items 1 and 2 above, this indicates a faulty IC. SA-DV250: IC901 (C2BBFD000317) http:/servis- IC401 (M38504E6227F) RS-DV250: IC701 (M38503M2406F) Check th

12、ese ICs and replace. TOP PREVIOUS NEXT http:/servis- F61 TOP PREVIOUS NEXT lProblem or condition When the power switch is switched on, it automatically switches back off, making it impossible to switch power on. lCorrection procedure Faulty Tuner/Amplifier (SA-DV250) output IC (IC601). (When a DC vo

13、ltage is applied to speaker terminals.) TOP PREVIOUS NEXT S904(PLAY/REC)SCHEMATIC DIAGRAM-1FL901 (A2BB00000084)1754632TSS908(INPUT SELECTOR)S907(SET)S906(TUNING MODE)S905(FM AUTO/MONO)JK903PHONES3.5mm STEREOR997150R996150D973MA4030MTAC9211000PC92235V33C92025V22R92210KR92110KR9442.2KR9124.7KR9113.3KR

14、9102.2KR9091.8KR9161.5KR9151.2KR9141KR913820R9073.3KR9062.2KR9051.8KR9041.5KR9031.2KR9021KR901820FL DISPLAY16810 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 5053 542579W905S901(/ )C92825V22NOTE:The number which noted at the con

15、nectors on the schematic diagram asSCHEMATIC DIAGRAM-1 or SCHEMATIC DIAGRAM-2indicates the schematic diagram serial number located on the left corner in the schematic diagram.AOPERATION CIRCUITC91925V22C92725V22C3960.047C9230.1C3950.047D974MA165TAC907470PC9240.1C9040.01R9241KC908470PR9251KS914(PS)S9

16、15(PTY)S910(TUNING,)S911(TUNING,)S912(TUNER/ BAND)S913(DIGITALS.WOOFER)(RDS DISP MODE)A B C DEF G HIJKL M N O P Q R S T UXWVABCDEFGHIJKLMNOPQRSTUVWXYZS902(CLOCK/ TIMER)S903(-DEMO):AUDIO SIGNAL LINESCHEMATIC DIAGRAM-2IC901C2BBFD000317SYSTEM CONTROL/FL DRIVECBAQ901UN4212TARESETR936100R91915KR99147KR91

17、810KR92847KL9021HD9011SS291TAL90110HR951330KR95210MABCDEFGHIJKLMNOPQRSTUVWXYZR993100KD931MA165TAD933MA165TAR990100KC9166.3V100D951LNJ301MPUJAD(DIGITAL S.WOOFER)R995220D954SELS5923C(PLAY/REC)R9861.5KD306SELS5223C()R9391.5KC9051000PC9016.3V100R935100R934100R9881KR93710KR9871KR9262.2KC9120.1R954100KC92

18、61000PR9601.5KR9581KR999100KR95947R9692.7KD9021SS291TAC9030.01C90210V1000X902(32.7kHz)C91118PC91020PX901(6MHz)132D9051SS291TAEFIKLMNOQR9401KR9291KR9301KR9321KR9311KR976100KR9561KR9571KC9150.01C9251000PR953100ABCDGHJC91450V2.2D904MA165TAABCDEA B C D E F G HIJKL M N O P Q R S TU V W X11121212223132341

19、4245152561626717278182891929102030313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99100-VPP13P14P15P16P17P18P19P20P21P22P23P24P25P26P27P28P29P30P31P32VDD4P33P34P35P36P37P38REGIN0REGIN18GREMOCONR

20、DS DATARDS CLKHP SWMIC DETVR JOGAVR JOGBNC(GND)SH REQKEY KARAOKEKEY TUVDD1XC OUTXC INVssX OUTX INRESETAC INSEL/ TUNERSEL TUNERST/ AV.6CHLC72 CKLC72 DI/ STLC72 CELC72 DOCHECKSTAND-BYTIMERS.W.LEDLOUNGECHORUSMUTENCPOWERVss2VDD2MUTE2NCMUTE3SHCSSHDOSHDISHCKE DETCR TIMERSDVDD3P12P11P10P9P8P7P6P5P4P3P2P11G

21、2G3G4G5G6G7GR994100KUR9494.7KR950100: POSITIVE VOLTAGE LINE: NEGATIVE VOLTAGE LINE5.1V5.1V2V/2ms.DIV.5V0V5V0VT10ms.2V/2ms.DIV.0V5V-30.1V-30.1V-29.3V-29.3V-29.3V-26.3V-20.5V-29.3V-29.3V-29.3V-23.5V-20.5V-23.4V-23.4V-23.7V-20.7V-29.6V-29.6V-29.6V-23.7V-26.6V-26.5V5.1V-29.5V-29.5V-26.5V-17.2V-5.3V-10.3

22、V0.4V0V-23.4V-20.5V-26.3V-26.3V5.1V-23.4V-20.5V-26.2V-29.2V-26.2V-26.2V-26.1V-26.3V-23.5V-23.5V-25.6V-27.5V-27.5V-25.5V-23.5V-25.6V5.1V2.6V2.6V0.6V5.1V0V0V1.4V5.1V5.1V5.1V2.3V2.3V2.7V1.6V5V2.2V0V5.1V5.1V4.6V0V0V2.5V0V5V0V5.1V3.3V1.9V1.9V1.4V0V5.1V5.1V4.8V0V0V0V0V0V0VFM / AM-30V4VT5.5ms.0V0V4VT5.5ms.

23、-30VFM / AM3.3VP-PF=6MHzFM / AM4.2VP-PF=6MHzFM / AM5.2VP-PF=32.7kHzFM / AM5.2VP-PF=32.7kHzFM / AM2VP-PF=32.7kHzFM / AMSCHEMATIC DIAGRAM-3W901BW902BIC151C1BB00000527RDS SIGNALDEMODULATOR123X151R1581KR154100KR153100K123456789101112131415BACOM123456789101112131415Q902UN411FTAMUTING CONT.A B C1234567891

24、0111213141516VREFHPX INVDDAVssAFL OUTC INTESTX OUTIDRRDCLRDDARSTMODEVDDBVssBX INR96222KVR901EVQVBXFK124B(VOLUME)R945100R96122KR943100C9170.01C1551000PC1531000PC1601000PC1596.3V47R1521KR1511KC154560PC1586.3V47C15116V10D907MA165TAMBCR9461KC9091000PC9186.3V100DEAR9411KL1531HR155120D151MA4051MTAL151100H

25、L152100HC15647PC15747PABCDEFGHIJKLNOQSTAOPERATION CIRCUITR9422.2KR9741KC93116V10R9653.9KR9663.9KD961MA4075MTAR97522KD906MA165TAUN123Z901B3RAD0000028(REMOTE SENSOR)R1571KC152330P: POSITIVE VOLTAGE LINE: NEGATIVE VOLTAGE LINE-30.1V5.1V:AUDIO SIGNAL LINE6V7.6V3.3V0V3.3V2.6V2.6V0V5.1V2.5V2.7V2.5V2.5V5.1

26、V2.5V2.5VSCHEMATIC DIAGRAM-4W902AW901ACP101CFGBAEDDETRch INCELch INDIDOCL+B(2)SD+B(1)T.GNDQ7072SB1417PQTAREGULATORQ7232SC3940AQSTAREGULATORR7634.7KR2301KR2291KD721MA4300MTAR7084.7KC7070.047C70635V10C737100ToSOUNDPROCESSOR(SH-DV250)To TUNER UINTon SCHEMATICDIAGRAM-10C7350.047BAR5632.7KR5642.7KC66016V

27、10C65916V10R6154.7KR6144.7KR6313.9KR6323.9KC2020.1R203100KR204100KC2010.1C60216V10C7080.047R211270D201MA4056MTAR6871.5KR6881.5KQ605,6062SD2144STAMUTINGQ605Q606R6831KR6174.7K2134567891011CBAX0X1VDDGVssINHZ0Z1Y1Y016151413121110912345678IC201BU4053BCFE2SIGNAL SELECTORC65516V10C65616V10R6064.7KR6054.7K2

28、153456789101112131412153456789101112131412021345678910111213141516171819KLMIJEFCDEFGEFGABCDABGHC60116V10R5982.2KR5972.2KR205100KHGR202100KBCDEFC5090.01C5100.01R6931KR6921KC66416V10C72516V47ACR69647KQ609,6102SD2144STAMUTINGQ609Q610Q612UN411FTAMUTING CONT.BCR69422KR51147R50947R51247 R51047W501D719RL1N

29、4003N02D720RL1N4003N02D717RL1N4003N02D718RL1N4003N02HDCR695470D611MA4051MTAC74016V10C7330.047D737MA4082LTAR764330MAIN CIRCUITBC7311000PC7410.1TUNER Lch/CTUNER RchA.GNDLch INRch IN+B(10V)SUR LSUR RS.WMIC-B(-10V)V.GNDD.GNDCS/ REQCLKDATACT GNDSH FL1SH FL2SYNCR6033.3KABBR6841KAC7156800C7141000PD705RL1N4

30、003N02A: POSITIVE VOLTAGE LINE: NEGATIVE VOLTAGE LINE: FM SIGNAL LINE: AM SIGNAL LINE14.7V10.4V-37.3V-30.1V-30.7V14.7V7.2V7.8V-10V-10V0V0V-10.2V5.1V4.9V0V-10V0V0.7V:AUDIO SIGNAL LINE5.7V0V0V0V0V0V6V7.2V7.6V-10.4V0V0V-10.4V:MIC SIGNAL LINESCHEMATIC DIAGRAM-5MQ708UN4211TASWITCHING(POWER)Q601Q602D756MA

31、700ATAC603470PC604470PC607470PC608470PC6491000PC6501000PC6051000PC6061000PC6481000PC6170.01R63715KR63868KR619120KR622120KR621150KR624150KR620120KR61256KR61156KR610150KR60956KR60856KR60756KC61056PC60956PC61215PC61139PC61447PC61347PR627470KC61650V0.47ND601SB360L6508D602SB360L6508D754RL1N4003N02C7610.1

32、D7011N5402BM21C7090.1IC601RSN311W64BPOWER AMPD757MA700ATA1234567891011121314151819202122232425261617R6043.3KR6013.3KR6023.3KR6184.7KQ601,6022SC5398RSTAPROTECTORD6071SS291TALKD658MA165TAD657MA165TABAR6851KR6861KQ607, 6082SD2144STAMUTINGQ607Q608C7050.01GR77610KQ7092SD2144STASWITCHING(POWER)R7383.9KR73

33、947KC62210V100D659MA165TAD7511N5402BM21D7031N5402BM21D753RL1N4003N02D761RL1N4003N02D755RL1N4003N02D7521N5402BM21D7021N5402BM21D7041N5402BM21GFEDA BCD558MA165TAR54410KR57215KR648120C6180.01R6352.2KC6190.1Q5032SC5398RSTASWITCHINGC7044700C7024700C7034700C7014700R761220R62822KR69168R647270R623120K: POSI

34、TIVE VOLTAGE LINE: NEGATIVE VOLTAGE LINE:AUDIO SIGNAL LINE7.6V-10.4V0V0V59.5V-59.5V0V28.9V-29.3V0V0V0V0V-0.2V29.4V-29.7V0V0V54.1V-51.4V0V0V0V0V0V0V5.1V5.1V0V0V0.7V0V0V2.1V14.7V0.7V0V0.7V0VSCHEMATIC DIAGRAM-6CN781FCABDEQ5512SA1995RSTASIGNAL LEVEL DET.Q5552SD2144STASIGNAL LEVEL DET.Q7022SB1548PQAUREGU

35、LATORQ7252SC5398RSTASTABILIZERQ7052SA1995RSTASTABILIZERQ7012SD2374PQAUREGULATORR556100KR55710KC72110V100D725MA4082LTAR729220C7230.047C6391000PC6401000PC6411000PC6421000PC7320.022C6471000PD738MA165TAD730MA4091HTAR768100R7243.9KC71816V100D723MA4150HTAR7235.6KC7190.047R72510C7240.047C7100.047R54618KR55

36、118KR55247KR55522KC5500.01D552MA165TAD555MA4100MTAR54718KE602E601R7491KD739MA165TAPOWER SUPPLY CIRCUITC11032456789W701B11032456789R7203.9KC73450V3.3D758MA165TAC72216V100C7200.047C71716V33MAIN CIRCUITBGR765220NR56910KD554MA165TAC3716.3V100Q5562SC5398RSTASWITCHINGR568100D553MA700TAC55616V10C55516V10Q5

37、572SA1995RSTAMOTOR DRIVEQ5532SD2144STAMOTOR DRIVER5702.2MR560100KC5590.01D581RL1N4003N02R56722FAN MOTORJK551R56668KQ5542SA1995RSTASIGNAL LEVEL DET.MR7193.3KQ703,7042SD2137PQTAREGULATORR7962.2Q703Q704R76927R7273.9KC55410V220R561100KC5520.01R5594.7KR5914.7KC55150V2.2D551MA165TA12D583RL1N4003N02NR7214.

38、7R7222.2ABR7530.47R7540.47Q711,7122SB1548PQAUREGULATORQ711R7972.2R76727R5582.2KD582RL1N4003N02Q712: POSITIVE VOLTAGE LINE: NEGATIVE VOLTAGE LINE29.2V:AUDIO SIGNAL LINE29.2V14.7V15.2V-30.1V-11V-10.4V-11V-0.6V14.1V13.6V9.6V10.2V10.4V-10.4V14.7V7.6V7V0V7.6V0.3V-10.4V-10.4V-10.4V7.6V7.6V6.8VFAN ON:1.6V0

39、VFAN ON:0V0.5VFAN ON:0V4.7V0V0.5V8.1V8.1V30.1V30.1V7.6V7.6V0V10.4V13.6V10.4V14.1V13.6VSCHEMATIC DIAGRAM-7L60121345678910111221345678R63910C6210.1EFDCP601CP602R64110ABIJCC6310.1GToAC IN CIRCUIT(CN601)on SCHEMATIC DIAGRAM-8DToAC IN CIRCUIT(CN602)on SCHEMATIC DIAGRAM-8DLchJK601HF(6)LF(8)RchJK602HF(6)LF

40、(8)ABCR65110C6270.1C6290.1C6350.047R64910L605R64210C6200.1C6300.1R64010L602C6370.047C6360.047R65210C6260.1C6280.1R65010L606C6320.047SPEAKERSGNDGNDC OUTC OUTGNDGNDGNDGNDSUR L OUTSUR L OUTSUR R OUTSUR R OUTECOSH SYNCSA SYNCD.GNDBU5VRS13V+BNCToPOWERTRANSFORMER(A)CIRCUIT(W722B)on SCHEMATICDIAGRAM-8W722A

41、W721A213456789102134EFHDCGFEDEToPOWERTRANSFORMER(A)CIRCUIT(W721B)on SCHEMATICDIAGRAM-8ES1S2S3S4AC1CTAC2S7FL2FL1S1S2S3S4: POSITIVE VOLTAGE LINE: NEGATIVE VOLTAGE LINE:AUDIO SIGNAL LINEToMAINCIRCUIT(W721A) onSCHEMATICDIAGRAM-7ToMAINCIRCUIT(W722A) onSCHEMATICDIAGRAM-7SCHEMATIC DIAGRAM-8CADBT701CN701CN7

42、02CN703CN704CN705CN706CN707CN708CN709CN710R7931CN601C6521000PC6441000PC6431000PC6510.047C6460.047C6450.047R chL chAC INJK701L701F1 T2AT702Z701C7911000P3124RL702R79447KQ7912SD2144STARELAY DRIVED745MA4051MTAC7530.01C7551000Q7262SC3940AQSTAREGULATORD746RL1N4003N02D747MA4068LTAC7580.01C75910V47C7540.01D

43、500MA165TAW2/W3W1CN602R791RSFMB50KT-LJK603CENTER(8)SURROUND(8)R64610C6240.1C6340.1R64410L604R64510C6250.1C6330.1R64310L603DAC IN CIRCUIT21345678910111221345678R7771KR77418D711RL1N4003N02R77318R7122.2KABCACBR7953.9KD743RL1N4003N02D741RL1N4003N02D742RL1N4003N02D744RL1N4003N02R7712.2KD740MA165TAPOWER T

44、RANSFORMER(B) CIRCUITFPOWER TRANSFORMER(A) CIRCUITEW722BW721B10213456789CN713CN712CN711W1W3W22134R77222KABCDR792RSFMB50KT-LSPEAKERSToMAIN CIRCUIT(CP602)on SCHEMATIC DIAGRAM-7BToMAIN CIRCUIT(CP601)on SCHEMATIC DIAGRAM-7BBBGNDGNDC OUTC OUTGNDGNDGNDGNDSUR L INSUR L INSUR R INSUR R INECOSH SYNCSA SYNCD.

45、GNDBU5VRS13V+BNCS1S2S3S4AC1CTAC2S7FL2FL1S1S2S3S4R7982.2For EB area.For EG area.230-240V 50HzEB230V 50HzEG: POSITIVE VOLTAGE LINE: NEGATIVE VOLTAGE LINE0.7V0V6V10.7V6V6.7VAC22.6VAC22.6VAC11.7VAC11.7VAC4.7VAC29.2VAC9.4V1234567891020191817161514131211X INCEDICLDOB01B02B03B04I01IF INI02AM INFM INVDDPDA

46、INA OUTVssX OUT10K0.047100K5 12P1000PABCD0.58 H39022027K100P0.015601K4.7DZS5.1B10K27P 33P27P7.2MHz22K100K1001000P1000P10K1K3.3K10K1K1K1K470ABCD225.6K0.01ABCDEFLC72131MPLL FREQUENCYSYNTHESIZERAM ANTEXTLOOPFM ANT(75)SCHEMATIC DIAGRAM-91000.011002SC2413BUFFER AMP2SK360FM OSC2SK360RF AMP22P15P22P0.0222.

47、7K47P33K100K2P8P10K10K33K33K100K0.02210027P2P4P10K2200.0220.0221505P18P27P2SC2059FM MIXER0.47H0.47H10P 33P330P 580P1P 5P680 2.2K0 2201H820K 2.2M0.0226801000P3301P 5P6P 10P6 2205P5P 12P0 5P100KZ101 TUNER UNIT(RAN0005EM-2):POSITIVE VOLTAGE LINE:FM SIGNAL LINE:FM OSC SIGNAL LINE:AM SIGNAL LINE:AM OSC S

48、IGNAL LINECB242322212019181716151413123456789101112FM IF INAM MIX OUTREGAM IF INGNDSDSTFM DETVccSTRQFM/AMMONOAM OSC OUTAM OSCAFCAM RF INAGCAM OUTDET OUTPILOT INMPX INPILOT OUTRch OUTLch OUTB ADFCE4702.7K1680.11000P4700.015 150AB1221000.01811K100K4700PBA4700P100K1K10.0181000P 0.01150P68K0.11022K4.74.

49、747K1000P3.3ADBC10K0.013301000PLA1833MNFM/AM IF AMP,DET/AM OSC,MIX/FM MPXABBADA2SC2712SWITCHING3.3K2SC2413FM IF AMP2SC2413FM IF AMP330SCHEMATIC DIAGRAM-1011132456789101K 10K4704.7K 22K0.0220.1DTA114POWER SUPPLY(FM:ON)1K 10K100P 1000P0.01 0.06810K 100K1K 10K270 680270K 680K10P 39P270K 680KCLDODILch OUTCERch OUTDET+B(2)SD+B(1)T.GNDToMAIN CIRCUIT(CP101)on SCHEMATIC DIAGRAM-4B10.47:POSITIVE VOLTAGE LINE:FM SIGNAL LINE:AM SIGNAL LINE:AM OSC SIGNAL LINE