Yamaha-AS2000-int-sch(1) 维修电路原理图.pdf

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1、ABCDEFGHIJ1234567A-S200037+-+-A B PHONESSPEAKERS L/R CHR CHCD BAL L/RCD L/RTUNER L/RLINE1 L/RLINE2 PB L/RLINE2 REC OUT L/RPHONOL/RMCHEAD AMPEQ AMPATT.1ATT.2ATT.3ATT.4ATT.5ATT.6TONE CONTROL DEVICESPRE OUTMAIN IN MM/MCRY_MMHCSPEAKER DRIVERLOW IMPEDANCE DRIVEHEADPHONE AMP.INDEPENDENTFLOATING POWER SUPP

2、LYFLOATING BALANCEDPOWER AMPLIFIERVOLUME & TONE CONTROLR CHR CHL CHL CHfor HOTPOWER TRANSFORMERINPUT SELECTORINPUT BUFFERINDEPENDENT REGULATED POWER SUPPLY(for AUDIO)For MC AMPFor EQ AMPFor LINE AMP1For LINE AMP2For VOLUME1For VOLUME2+20V/-20V+25V/-25V+25V/-25V+25V/-25V+12/-12V+12V/-12VSUB-TRANSFORM

3、ERBUFFER AMP.BUFFER AMP.VOLUMEINPUT SELBALANCEBASSTRIMSPEAKERTREBLEREMOTEPOWER SWITCHfor MICROPROCESSORFRONT PANELMICROPROCESSORAC INRY101RY102RY103IC201IC410IC404RY_BYPRY402RY_DIRRY404RY501RY201/R111RY202/R112RY_SPARY_SPBJK501RY_HPHP ENDPRDPRI THM+B3/-B3D335D336D300D301D305D304PRVRY1T13460PRV1PRVPD

4、ET1716RY_PWR354536,37MVOL+/-41-43A/B/C463925REM5I_BASI_TRE124I_LRBAL2I_SEL1I_VOLLED_PWR54RY_UNBALRY_BYP532,3PRD1,64THM62,63HP_PRD48PSVA147PSVA2RY_DIR32RY_BAL26RY_CD27RY_TU28RY_L129RY_L255RY_MMMC561415HPTRIMIC501IC502SP_AB9-113,4RY_PHONORY_SPBRY_SPARY_HPVR501PRV+33V-33VD306PRVIC52IC51+12VPSVA1PSVA2-1

5、2V+B4/-B4+B1/-B1+B2/-B2RY401RY403IC413IC302IC303IC405IC406IC401IC402IC403IC411IC412IC407IC408IC409IC301RY305RY306RY_BALPOL/PORRY UNBALRY_PHONORY_CDRY_TURY_L1RY_L2Q1001-1016Q1017-1038FLATSPCH A L/R CHSPCH B L/R CH(for POWER AMP / VOLTAGE AMP STAGE)HOT (POSITIVE PHASE)COLD (NEGATIVE PHASE)HOT(+)COLD(-

6、)HOT(+)COLD(-)HOT(+)COLD(-)FLATTONE CONTROL DEVICESHOT (POSITIVE PHASE) SIDE for COLDfor HOTfor COLDSPEAKER DRIVERCOLD (NEGATIVE PHASE) SIDE to POWER AMP.to SPEAKERS RELAYMAIN DIRECTBALANCE UNBALANCECONVERTERBALANCE See page 59 SCHEMATIC DIAGRAMFRONT See page 64-66 SCHEMATIC DIAGRAM See page 60-62 S

7、CHEMATIC DIAGRAMMAIN See page 63 SCHEMATIC DIAGRAMFUNCTION See page 60-62 SCHEMATIC DIAGRAMFUNCTION See page 60-62 SCHEMATIC DIAGRAMFUNCTIONFRONT See page 64-66 SCHEMATIC DIAGRAMFRONT See page 64-66 SCHEMATIC DIAGRAMLINE AMP.I BLOCK DIAGRAMRadioFans.CN 收音机爱 好者资料库W2001CB203CB201CB202JK202JK201IC201IC

8、201A12345678910BCDEFGHIJKLMNA-S200059# All voltages are measured with a 10M/V DC electronic voltmeter.# Components having special characteristics are marked s and must be replaced with parts having specifications equal to those originally installed.# Schematic diagram is subject to change without no

9、tice.BALANCESCHEMATIC DIAGRAMS12.6-12.500-11.9-11.9000005.86.46.40.30.30-24.50.61.00.41.024.625.225.71.0-0.8-0.2-25.425.75.85.85.8-24.5-0.8-25.1-25.7 -25.0-0.20.41.024.60.305.86.46.40.30.300-24.50.50.41.024.725.225.71.0-0.7-0.2-25.425.75.85.85.8-24.5-0.7-25.1-25.7-25.0-0.20.41.01.024.70.3005.86.36.3

10、0.30.30-24.50.51.00.41.024.625.225.71.0-0.8-0.3-25.425.75.85.85.8-24.5-0.8-25.1-25.7-25.00.41.024.60.3005.86.30.3-25.70-24.50.60.41.024.725.225.71.0-0.8-0.3-25.425.75.85.85.8-24.5-25.0-0.8-25.10.4-0.21.01.024.70.3CD BAL LIC201: NJM2068MD-TE2Dual operational amplifierOUT1OUT2IN1+IN1+IN2-IN2VCC+VCC123

11、48765+ + CD BAL LCD BAL Rto FRONT (12)_CB59Page 66H2to FUNCTION (3)_W3Page 62H8to FUNCTION (1)_W3005Page 60K2to FUNCTION (1)_W3006Page 60K2RadioFans.CN 收音机爱 好者资料库CB301IC301IC301IC302IC302IC303IC303CB305W3004W3002W3001W3003W3005W3006A12345678910BCDEFGHIJKLMNA-S200060# All voltages are measured with a

12、 10M/V DC electronic voltmeter.# Components having special characteristics are marked s and must be replaced with parts having specifications equal to those originally installed.# Schematic diagram is subject to change without notice.FUNCTION 1/312.0-11.9 -11.9-11.9 -11.8-11.9-11.9 00-11.800-11.8000

13、00-12.5012.600000012.6-12.5000-12.600012.600-11.800-11.800-11.800-11.825.75.80.30.30.10.325.60.901.00.900.51.124.625.10.90.306.424.65.824.61.124.625.7-0.90-25.6-24.5-24.51.10.625.7-11.9-11.9-11.9-11.90-0.6-25.625.70.625.70.60-25.60.500.5-25.60.91.1-0.60.2-0.9-0.40.5-0.16.35.85.8-0.9-25.0-24.8-25.6-0

14、.6000.30.30.35.85.825.75.80.30.30.10.324.60.901.30.900.51.124.625.10.90.306.424.65.825.71.125.224.625.7-0.90.3 -25.6-24.5-24.51.10.525.70-0.6-25.60.91.10-0.60.3-0.9-0.30.50.56.35.85.8-0.9-25.1-24.8-25.5-0.600.10.30.30.35.85.8-11.9 CD LIN LCD BAL LFUNCTION (1)LINE 2IC301: NJM2068MD-TE2Dual operationa

15、l amplifierOUT1OUT2IN1+IN1+IN2-IN2VCC+VCC12348765+ + IC302, 303: OP275GSRDual bipolar/JFET, audio operational amplifierOUT A-IN AV-V+OUT B12345+IN A-IN B+IN B678to BALANCE_CB201Page 59I5to FUNCTION (2)_CB403Page 61J4to FUNCTION (2)_CB402Page 61B6to FUNCTION (2)_CB401Page 61B5to FRONT (1)_CB519Page 6

16、4B5to FRONT (10)_W1003Page 65B5to BALANCE_CB202Page 59I7to FRONT (10)_W1002Page 65M5CB406CB403CB404W4004CB405CB402IC407IC412IC411IC410IC404IC404IC408IC409CB401IC405IC405IC406IC406IC413IC413IC401IC401IC402IC402IC403IC403A12345678910BCDEFGHIJKLMNA-S200061# All voltages are measured with a 10M/V DC ele

17、ctronic voltmeter.# Components having special characteristics are marked s and must be replaced with parts having specifications equal to those originally installed.# Schematic diagram is subject to change without notice.FUNCTION 2/3012.50000000000000000-12.400-12.400-12.412.5-12.312.524.5-11.800.3-

18、0.1-25.30.70.7-0.2-25.8-0.7-24.6-25.3-25.70.40.35.85.8000-11.824.2-25.212.600005.85.8025.324.4-24.50.5-0.1-25.0-25.712.60012.6-12.5-12.512.525.50.50.500-25.8-25.80.525.512.60.5-0.500-12.5-12.5-11.9-11.900.6-12.50.5-12.5-12.500.725.025.5-0.2-25.7-0.71.00.41.06.45.800.300.306.425.524.524.925.51.00.41.

19、05.85.812.50-12.4012.50-11.9-11.9000-12.40-12.400-12.500-12.512.612.600-12.512.612.6-12.40-12.400-12.4000-11.9-11.900012.512.5000000000000000000000000000012.512.50000000000000000-12.412.512.512.5000000000000000000000000.10000-12.500000000000000000-12.412.512.512.5000000000000000000000000.10000-12.50

20、00.100000000000000.1-12.512.512.512.5000000000000.1000.1000000000.10000-12.512.50000000000000000-12.512.612.512.5000000000000000000012.50000.10000-12.500000000000000000-12.512.612.512.500000000000000000012.5012.6000.10000-12.5-11.9-11.90005.85.86.425.424.424.91.11.125.40.45.85.824.40.30.30.5-0.7-0.4

21、-0.7-0.1-25.8-24.7-24.7-25.80-11.800-11.825.424.925.41.00.424.41.06.35.85.80024.3-0.4-0.2-0.7-24.7-24.7-25.3-25.85.80.35.8-0.70-25.8-0.70.3OUT LIN LIC413: NJM2068MD-TE2Dual operational amplifierOUT1OUT2IN1+IN1+IN2-IN2VCC+VCC12348765+ + IC401-406: OP275GSRDual bipolar/JFET, audio operational amplifie

22、rOUT A-IN AV-V+OUT B12345+IN A-IN B+IN B678IC407-412: TC94A81UGElectronic volume controlZero crossingdetectioncircuitDecoder24-bit shift register3938373635343313231302928L-SW-IN4L-SW-OUTL-ZX-INL-ZX-AGNDL-MVR-INL-MVR-AGND1L-MVR-AGND2R-MVR-AGND2L-MVR-OUTR-MVR-OUTL-TVR-OUTR-TVR-OUTL-TVR-INR-TVR-INL-TVR

23、-REFR-TVR-REFNC40L-SW-IN341L-SW-IN2424345L-SW-IN1TESTVDDSS1R-SW-IN4R-SW-OUTR-ZX-INR-ZX-AGNDR-MVR-INR-MVR-AGND1R-SW-IN3R-SW-IN2R-SW-IN1NCVSSLatchLatchLatchLatchLatchLatchZero crossingdetectioncircuitLatchLatchLatchDecoder2726252423Latch22212019181716151413122SS23CS14CS25MUTEM6GND8MUTE9CK10DATA11STB7T

24、CTiminggeneTest andPower ON resetLevel shiftFUNCTION (2)to FUNCTION (1)_W3003Page 60K3to FRONT (11)_W6Page 66F4to FRONT (1)_CB517Page 64K6to MAIN (1)_W102Page 63A3to MAIN (2)_W202Page 63A8to FUNCTION (1)_W3001Page 60K4to FUNCTION (1)_W3002Page 60K6W1CB25CB23IC52IC51W11AW11BCB2W10AW10BW3W4A1234567891

25、0BCDEFGHIJKLMNA-S200062# All voltages are measured with a 10M/V DC electronic voltmeter.# Components having special characteristics are marked s and must be replaced with parts having specifications equal to those originally installed.# Schematic diagram is subject to change without notice.FUNCTION

26、3/3AC29.8AC20.40000.9004.95.05.0005.1016.616.616.616.616.68.416.68.30005.00.800.18.98.98.98.909.58.99.59.88.426.48.426.426.49.50.18.98.98.98.108.910.1-19.40019.612.2-11.9-11.9-11.912.0005.012.2-11.912.001.30-12.019.40019.612.2-19.6-12.0FUNCTION (3)IC51: NJM7812FAVoltage regulatorINPUTOUTPUTCOMMONIC5

27、2: NJM7912FAVoltage regulatorCOMMONOUTPUTR23R24R13R14R20R17D3Q22Q21Q25Q20Q24Q18Q9R18R19R16R15R21R12R11R10Q17R9R8R7R5R4D2D1R6C1C2C3R22Q11Q13Q14Q15Q19Q16Q23Q8Q7Q2Q1Q6Q5Q3Q10Q12Q4R1R2R3INPUTto BALANCE_CB203Page 59I3to FRONT (13)_CB79Page 66H6To POWER TRANSFORMERto MAIN (3)_W317Page 63L3to FRONT (1)_CB5

28、01Page 64B4to FRONT (14)_W8A, W8B(R, L models)AC INTo POWER TRANSFORMERPOWER ON/OFF switch(U, C, T, K, A, B, G, J models)600mm2PPage 66B4W102CB52CB72CB54CB75CB55IC102W103CB21CB22W303CW104CB24W317CB26W303DW303BW303AW316W318W315W314W304DW304BW304AIC303IC301IC302IC300W304CCB74CB76CB73W204W203CB71IC202C

29、B84CB79CB80CB77CB78CB57CB58CB59CB64CB60W202A12345678910BCDEFGHIJKLMNA-S200063# All voltages are measured with a 10M/V DC electronic voltmeter.# Components having special characteristics are marked s and must be replaced with parts having specifications equal to those originally installed.# Schematic

30、 diagram is subject to change without notice.MAINAC89.5AC48.5DC51.4DC51.4AC38.5AC38.5AC38.5AC38.5DC51.4DC51.458.258.258.258.22.92.93.4-1.82.9-2.060.2-60.758.258.260.160.859.458.20.6-50.90.6-1.860.859.458.80.658.20.60-50.950.9-51.9-51.4-51.9-52.4-1.8-51.2-1.81.8-52.4-53.1-1.8-1.8-53.1-52.560.6-53.3-5

31、3.0-0.8-1.7-0.7-0.7-1.0-1.0-0.960.6-1.7-1.7-1.7-1.7-1.7-50.9-53.260.8-1.7060.860.800.95.11.3-0.712.7-0.760.71.3-0.550.850.3-1.00.550.36.606.16.157.46.606.10.60.600-1.0-45.00.5-45.5-45.0-1.0-45.500-22.1-20.9-1.0-22.1-39.8-45.0-57.301.1022.039.821.21.122.200.661.1-61.032.2-32.224.604.6-24.424.64.40-23

32、.8-10.8-15.5-16.5-15.64.84.633.633.6-52.7-53.85.134.1-53.9-52.85.10-16.5-15.6-24.524.904.43.7-16.5-15.55.1004.8-16.5-10.833.85.15.133.75.133.7-52.7-53.85.133.8-53.9-52.539.621.21.11.100.20-0.1-1.0-0.5-1.0-45.5-45.0-45.00.5-45.6-45.06.150.46.16.606.06.657.460.812.6-50.9-51.6-52.160.860.860.70-1.5-1.5

33、-1.5-51.6-52.5-53.1-1.5-52.5-53.1-1.5-52.5-53.160.6-53.1-53.1-1.2-1.5-1.2-1.5-1.260.6-1.5-53.1-52.5-1.5-53.1-52.5-1.5-53.1-52.5-1.560.858.858.859.560.259.860.258.358.30.60.60.60.658.8-50.9-56.7-59.558.358.358.33.64.13.6-1.4-1.64.1-1.458.358.33.64.1-1.6-1.43.60-50.9-55.7-1.5-52.6-52.1-1.5-50.958.360.

34、260.860.8-60.7-51.6-1.5-52.1-51.6-53.1-53.1-1.5-53.1-53.1-1.5-1.5-52.5-51.0-0.6-1.2-0.6-1.26.66.00.5000.5-57.2-20.9-21.8-39.80-21.8-0.10.50-0.5-1.022.00.6022.01.150.950.41.134.1-15.5-10.8-15.5-16.5-16.5-15.6-10.8-10.800-16.5-15.6-10.8-10.80-16.5-10.823.80.63.2-23.83.76.60.56.11.10-51.6-52.2-51.6-52.

35、2-52.5-53.1-52.5-52.6-53.1-53.1-53.1-53.5-53.5-53.3-1.8-52.4-53.1-1.860.860.859.83.43.4-1.81.82.900.95.1Ground pointGround pointOUT LIC102, 202: LM61CIZTemperature sensorMAIN (1)MAIN (2)MAIN (3)MAIN (4)MAIN (5)Idling adjustmentIdling adjustment#Head phone DC offsetHead phone DC offsetNote) Those par

36、ts marked with “#” are not included in the P.C.B. assy. （部品、基板含。） to FUNCTION (2)_CB406Page 61J3to FUNCTION (2)_CB405Page 61J7to FUNCTION (3)_CB25Page 62C6to FRONT (11)_CB34Page 66B3To POWER TRANSFORMERTo POWER TRANSFORMERTo POWER TRANSFORMERTo POWER TRANSFORMERto MAIN (3)_W318M2to MAIN (2)_CB73K8to

37、 MAIN (2)_CB72C9to MAIN (1)_CB52C5to MAIN (2)_CB75F6to MAIN (1)_CB55F1to MAIN (3)_W314M2to MAIN (3)_W315M2to FRONT (2)_CB504Page 64C9to FRONT (1)_CB521Page 64K8to FRONT (12)_W101A, W101BPage 66H4to FRONT (13)_W201A, W201BPage 66H8安全対策 製品内部高電圧部分危険。修理際、絶縁性手袋使用安全対策行。 下記箇所電源OFF後電荷残、高電圧維持危険。修理作業前放電用抵抗 （5

38、 k/10 W） 下記箇所端子間接続放電。放電所用時間約30秒間。1. MAIN （3） P.C.B.C3082. MAIN （3） P.C.B.C3093. MAIN （3） P.C.B.C3354. MAIN （3） P.C.B.C336Safety measures Some internal parts in this product contain high voltages and are dangerous. Be sure to take safety measures during servicing, such as wearing insulating gloves. N

39、ote that positions indicated below are dangerous even after the power is turned off because an electric charge remains and a high voltage continues to exist there.Before starting any repair work, perform discharge by connecting a discharge resistor (5k-ohms/10W) between terminals at following positi

40、ons. The time required for discharging is about 30 seconds.1. C308 on MAIN (3) P.C.B.2. C309 on MAIN (3) P.C.B.3. C335 on MAIN (3) P.C.B.4. C336 on MAIN (3) P.C.B.5 k-ohms10 W5 k-ohms10 W5 k-ohms10 W5 k-ohms10 WCB501IC505IC501CB515IC502JK501JK501CB503CB524CB525CB504W5002IC504CB517CB519CB521CB507CB50

41、9W5004W5006W5003AW5005AW5005BW5009AW5009BW5007AW5007BW5003BCB512W5008IC503A12345678910BCDEFGHIJKLMNA-S200064# All voltages are measured with a 10M/V DC electronic voltmeter.# Components having special characteristics are marked s and must be replaced with parts having specifications equal to those o

42、riginally installed.# Schematic diagram is subject to change without notice.FRONT 1/300.75.10.24.32.100012.15.65.85.15.14.44.33.65.18.75.85.85.05.8005.62.52.61.31.32.52.62.52.52.55.0-11.8-11.85.05.105.0-11.80000011.90012.012.00011.900011.900011.911.911.912.012.012.012.0-11.9-11.9-11.90011.912.0-11.9

43、0011.912.0-11.912.0-11.812.0005.0005.012.0011.9011.812.05.05.35.35.3-11.812.15.75.75.05.05.3-11.85.05.3-11.85.00.14.65.15.15.15.15.1005.14.15.15.14.14.81.25.15.15.005.15.005.04.61.90.15.03.25.05.05.05.05.05.05.05.05.05.05.05.05.05.000.80.40012.112.10.80.600.1000000.70.70.705.01.40000.2005.004.95.11.

44、05.11.3005.05.05.00000000000002.11.64.82.52.52.50.25.04.10000.50.34.9002.12.405.05.000005.05.001.0A-21A-32A-1MICROPROCESSORFRONT (1)FRONT (8)FRONT (7)FRONT (5)FRONT (4)FRONT (6)FRONT (3)FRONT (9)FRONT (2)4162COM37455INH6VEE7GND8Vcc16215114013312A11B10C9IC501 TC74HC4051AFEL8-channel analog multiplexe

45、r/demultiplexerLogicLevel ConverterOUTCINOUTCINABCINHCOM01234567IC503: LB1641Motor driverINPUT LOGICIN 1IN 2VZP1P2OUT 1OUT 2VCC 2VCC 1GNDPRE DRIVER13281097465IC504: LC709004A-TLM-EI/O-expander for microcontrollerControl logicport 0 I/O bufferSerial/parallel converter/shift registerI/O control/output

46、 registerDINVDDDOUTVSSCLK#CS#RES#P00P07214151934212417port 1 I/O bufferP10P17158213VOUTGNDVIN+IC505: RH5RE58AA-T1-FAVoltage regulatorVrefPOINT A-1 XL501 (Pin 23 of IC502)POINT A-2 A-3 1 / Pin 1, 2 / Pin 3 of CB5011CB501 +5MPOWER ONPOWER OFFCB501 /RES 212POWER ONIC502: M38039xxxxxSingle chip 8-bit mi

47、croprocessorP6 (8)A/Dconverter(10)PWM(8)I/O port P65 678910 11432P0 (8)I/O port P050 51 52 53 5455 5649P2 (8)I/O port P2(LED drive)34 35 36 37 3839 4033P5 (8)INT3VREFXINMainclockinputMainclockoutputSub-clockinputSub-clockoutputAVSSINT00INT01INT41INT1INT2INT40P3 (8)I/O port P5I/O port P313 14 15 16 1

48、718 1957 58 59 60 61 62 63 6412P4 (8)I/O port P421 22 23 24 2528 2920SI/O2(8)ROMAMICROPROCESSORRAMClock generating circuitSI/O1(8)D/Aconverter2 (8)D/Aconverter1 (8)SI/O3(8)P1 (8)I/O port P142 43 44 45 4647 4841XYSPCLPCHPSTimer Y (8)Prescaler Y (8)Timer Z (16)Prescaler X (8)Prescaler 12 (8)Timer X (8

49、)Timer 2 (8)Timer 1 (8)302726XCIN28XOUT31XCOUT29VSSData bus32VCCCNVSSCNTR0CNTR1CNTR2RESETReset input1to FUNCTION (1)_W3004Page 60K8to MAIN (2)_W203Page 63K6to MAIN (2)_W204Page 63SPEAKERSPHONESOFFABA+BTRIM-60+6+12K8to FUNCTION (2)_W4004Writing portPage 61J6to FUNCTION (3)_W1Page 62C5POWERindicatorIN

50、PUT indicatorCDTREBLE+/-BASS+/-BALANCEL/RTUNER LINE 1LINE 2 CD BALVOLUMEINPUTSELECTORPHONO MM/MCAUDIO MUTEPHONOMAINDIRECTAUDIOMUTEW1003W1002W1001A12345678910BCDEFGHIJKLMNA-S200065# All voltages are measured with a 10M/V DC electronic voltmeter.# Components having special characteristics are marked s