Yamaha-Audiogram3-ai-sm(1) 维修电路原理图.pdf

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1、SERVICE MANUALHAMAMATSU, JAPANCopyright (c) Yamaha Corporation. All rights reserved. PDF & 08.07SPECIFICATIONS（総合仕様） .3DIMENSIONAL DIAGRAM（寸法図） .3PANEL LAYOUT（） .4CIRCUIT BOARD LAYOUT（） .5DISASSEMBLY PROCEDURE（分解手順） .6LSI PIN DESCRIPTION（LSI 端子機能表） .8IC BLOCK DIAGRAM（IC 図） .9CIRCUIT BOARDS（基板図） .10I

2、NSPECTIONS（検査） .12/15RECORDING USING THE CUBASE AI 4（Cubase AI 4 使用録音） .18/23RECORDING USING THE TWE（TWE 使用録音） .28/31PARTS LISTBLOCK DIAGRAM（）CIRCUIT DIAGRAM（回路図） CONTENTS（目次）USB AUDIO INTERFACESY01191820080801 RadioFans.CN 收音机爱 好者资料库AUDIOGRAM32 WARNINGComponents having special characteristics are m

3、arked and must be replaced with parts having specifi cation equal to those originally installed.IMPORTANT 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 s

4、pecifically Yamaha Products, are already known and understood by the users, and have therefore not been restated.WARNING : Failure to follow appropriate service and safety procedures when servicing this product may result in personal injury, destruction of expensive components and failure of the pro

5、duct to perform as specified. For these reasons, we advise all Yamaha product owners that all service required should be performed by an authorized Yamaha Retailer or the appointed service representative.IMPORTANT : This presentation or sale of this manual to any individual or firm does not constitu

6、te authorization certification, recognition of any applicable technical capabilities, or establish a principal-agent relationship of any form.The data provided is belived to be accurate and applicable to the unit(s) indicated on the cover. The research engineering, and service departments of Yamaha

7、are continually striving to improve Yamaha products. Modifications are, therefore, inevitable and changes in specification are subject to change without notice or obligation to retrofit. Should any discrepancy appear to exist, please contact the distributors Service Division.WARNING : Static dischar

8、ges can destroy expensive components. Discharge any static electricity your body may have accumulated by grounding yourself to the ground bus in the unit (heavy gauge black wires connect to this bus.)IMPORTANT : Turn the unit OFF during disassembly and parts replacement. Recheck all work before you

9、apply power to the unit.WARNING: This product contains chemicals known to the State of California to cause cancer, or birth defects or other reproductive harm.DO NOT PLACE SOLDER, ELECTRICAL/ELECTRONIC OR PLASTIC COMPONENTS IN YOUR MOUTH FOR ANY REASON WHAT SO EVER!Avoid prolonged, unprotected conta

10、ct between solder and your skin! When soldering, do not inhale solder fumes or expose eyes to solder/ flux vapor!If you come in contact with solder or components located inside the enclosure of this product, wash your hands before handling food. 印部品、安全維持重要部品。交換場合、安全必指定部品使用。MIC/INST 端子（XLR ）配列、以下。（IE

11、C60268 規格基）1: （GND） 、2: （） 、3: （） ）321MIC/INST jacks (XLR-type) are wired as follows (IEC60268 standard): pin 1: ground, pin 2: hot (+), and pin 3: cold (-).RadioFans.CN 收音机爱 好者资料库3AUDIOGRAM3 SPECIFICATIONS（総合仕様）JacksMIC/INST Input Jackx 1 Combo jack (Mic/HiZ)LINE Input Jacks (L, R)x 1 Phone jacksx

12、1 RCA pin jacksPHONES Jackx 1 Phone jackSTEREO OUT Jacks (L, R)x 1 Phone jacksx 1 RCA pin jacksUSB Connectorx 1 USB 1.1 44.1/48 kHz, 16 bitControlsMIC/INST Switchx 1 MIC: for microphones INST (Hi-Z): for guitars, etc.LEVEL Controlx 2 Adjust the level of CH 1, 2PHANTOM +48V Switchx 1 48 V, only for C

13、H1OUT LEVEL Controlx 1 Adjusts the overall signalIndicatorsPhantom Powerx 1 RedLevel Indicatorsx 1 2 points (green, red)Powerx 1 GreenPower SupplyUSB bus-poweredDimensions (W x H x D)180 x 61 x 112 mmNet Weight490 gIncluded AccessoriesCubase AI 4 DVD-ROM USB cable Owners Manual General Specifi catio

14、ns DIMENSIONAL DIAGRAM（寸法図）W: 180D: 11210836H: 61522Unit: mmAUDIOGRAM34 PANEL LAYOUT（） Control Panel? ? Control panelq PHANTOM +48V Switch/Indicatorw MIC/INST Switche LEVEL Controlsr POWER Indicatort Level Indicatorsy OUT LEVEL Controlu USB Connector Rear Panel? q PHANTOM +48V / w MIC/INST 切替e LEVEL

15、 r POWER t y OUT LEVEL u USB 端子 Rear paneli MIC/INST Input Jacko LINE Input Jacks!0 STEREO OUT Jacks!1 PHONES Jack i MIC/INST 入力端子o LINE入力端子(L/R)!0 STEREO OUT 出力端子!1 PHONES端子5AUDIOGRAM3 CIRCUIT BOARD LAYOUT（）MIX3BOTTOM CASE PRINTED（印刷上）JACK3BOTTOM CASE PRINTED（印刷上）PS-USB ASSEMBLY（PSUSB Ass y）PSUSBSH

16、IELD PS-USB PS-USB ASSEMBLY（PSUSB）AUDIOGRAM36 DISASSEMBLY PROCEDURE（分解手順）1. Top Cover Assembly (Time required: About 1 minute)1-1 Remove the four (4) screws marked 140. The top cover assembly can then be removed. (Fig. 1)2. MIX3 Circuit Board (Time required: About 2 minutes)2-1 Remove the top cover

17、assembly. (See procedure 1.)2-2 Remove the screw marked 120. The MIX3 circuit board can then be removed. (Fig. 2)2-3 Pull out the three (3) volume knobs marked 100 and two (2) push buttons marked 110 from the MIX3 cir-cuit board. (Fig. 2)* The volume knobs and push buttons are not compo-nents of the

18、 MIX3 circuit board. When replacing the MIX3 circuit board, remove the volume knobs and push buttons and install them on the new MIX3 circuit board.1. Assy（所要時間：約 1 分）1-1 140 4 本外、 Assy 外。 （図 1）2. MIX3 （所要時間：約 2 分）2-1 Assy 外。 （1 項参照）2-2 120 1 本外、MIX3 外。 （図 2）2-3 MIX3 上面、100 VR （小）3個 110 HPF2 個外。 （図

19、2） VR （小） HPF MIX3 構成部品。 MIX3交換際、 VR （小） HPF 取外新 MIX3 取付。140 x2140 x2 TOP COVER ASSEMBLY（Ass y）140: BIND HEAD TAPPING SCREW（B BIND） 3.0X12 MFZN2W3 (WE98740R)Fig. 1（図 1）MIX3110 x2100100100120BOTTOM CASE（）120: BIND HEAD B-TIGHT SCREW（B BIND） 3.0X8 MFZN2W3 (WE774300)Fig. 2（図 2）Precautions（注意事項） During

20、assembly, pay attention that connectors, cables or the like are not pinched by circuit boards, frames, etc. 組立、基板類注意。7AUDIOGRAM33. PSUSB Circuit Board (Time required: About 6 minutes)3-1 Remove the top cover assembly. (See procedure 1.)3-2 Remove the MIX3 circuit board. (See procedure 2.)3-3 Remove

21、the two (2) screws marked 80. The inner chassis on which the JACK3 circuit board and PS-USB assembly are installed can then be removed. (Fig. 3)3-4 Remove the two (2) screws marked 60. The PS-USB assembly can then be removed. (Fig. 4)3-5 Unsolder the four (4) hooks A from the PSUSB cir-cuit board an

22、d turn the hooks until they are in the same direction as the notches on the circuit board to separate the PSUSB circuit board and shield PS-USB. (Photo 1)4. JACK3 Circuit Board (Time required: About 5 minutes)4-1 Remove the top cover assembly. (See procedure 1.)4-2 Remove the MIX3 circuit board. (Se

23、e procedure 2.)4-3 Remove the PS-USB assembly. (See procedures 3-3 and 3-4.)4-4 Remove the fi ve (5) each hexagonal nuts marked B and washers marked C, remove the four (4) screws marked 30 and remove the JACK3 circuit board. (Fig. 4)3. PSUSB （所要時間：約 6 分）3-1 Assy 外。 （1 項参照）3-2 MIX3 外。 （2 項参照）3-3 80 2

24、 本外、JACK3 PS-USB Assy 載外。（図 3）3-4 60 2 本外、PS-USB Assy 外。 （図 4）3-5 PSUSB 半田付 A （4 箇所） 半田取除、 基板切同向、PSUSB PS-USB 分離。 （写真 1）4. JACK3 （所要時間：約 5 分）4-1 Assy 外。 （1 項参照）4-2 MIX3 外。 （2 項参照）4-3 PS-USB Assy 外。 （3-3 項、3-4 項参照）4-4 B 六角 C 5 個外、30 4 本外、JACK3外。 （図 4）PS-USB ASSEMBLY（PS-USB Ass y）JACK3INNER CHASSIS（）6

25、0 x230 x330Bx2Cx2Bx2Cx2BCFig. 4（図 4）80 x2BOTTOM CASE（）PS-USB ASSEMBLY（PS-USB Ass y）JACK3INNER CHASSIS（）80: BIND HEAD B-TIGHT SCREW（B BIND） 3.0X8 MFZN2W3 (WE774300)Fig. 3（図 3）Photo 1（写真 1）PSUSBSHIELD PS-USB（ PS-USB）Hooks (Soldering) （ （半田付） ）AAHooks (Soldering) （ （半田付） ）30: BIND HEAD B-TIGHT SCREW（B

26、BIND） 3.0X8 MFZN2W3 (WE774300)60: BIND HEAD B-TIGHT SCREW（B BIND） 3.0X8 MFZN2W3 (WE774300)AUDIOGRAM38 LSI PIN DESCRIPTION（LSI 端子機能表）PINNO.I/OFUNCTIONNAMEPINNO.I/ONAMEPCM2904DBR (X9570A00)STEREO AUDIO CODEC WITH USB INTERFACEDAC analog output for R-channnelDAC analog output for L-channnelInternal ana

27、log power supply for PLLAnalog ground for PLLInternal analog power supply for PLLCrystal oscillator outputCrystal oscillator inputAnalog ground for oscillatorInternal analog power supply for oscillatorTest pin, must be connected to GNDTest pin, must be left openDigital groundInternal digital power s

28、upplySuspend flag, active low (Low: suspend, Hihg: operational)FUNCTIONOO-OI-IO-OVOUTRVOUTLVCCP1IAGNDPVCCP2IXTOXTIAGNDXVCCXITEST0TEST1DGNDVDDISSPND1516171819202122232425262728USB differential input/output plusUSB differential input/output minusConnect to USB power (VBUS)Digital ground for USB transc

29、eiverHID key state input (mute), active highHID key state input (volume up), active highHID key state input (volume down), active highMust be set to highInternal analog power supply for codecAnalog ground for codecADC analog input for L-channnelADC analog input for R-channnelCommon for ADC/DAC (VCCC

30、I/2)I/OI/O-IIIII-II-D+D-VBUSDGNDUHID0HID1HID2SEL0SEL1VCCCIAGNDCVINLVINRVCOM1234567891011121314PSUSB: IC1029AUDIOGRAM3 IC BLOCK DIAGRAM（IC 図）BA10339F-E2 (X6266A0R)MIX3: IC402Ground Sense Comparator1234567OUT2OUT1Vcc-IN1+IN1-IN2+IN2141312111098OUT3OUT4VEE+IN4-IN4+IN3-IN3+-+-+-+-11.5AMaximumON duty 9.1

31、OSC BLOCK4328 5 6 7 V+EsGNDPWMLogicRSQVref1.25V2%CDCTCsSIIN+Vth=300mVIpk SensePWM COMPERR. AMP16012348765CsCTGNDCDSIV+IN+EsNJM2374AM-TE1 (X9482A00)PSUSB: IC401, IC501, IC601PWM DC/DC ConverterNJM072BM-E-TE1 (X4543A01)MIX3: IC101Dual Operational Amplifier12348765A Output+VA +InputV-V+B OutputB -Input

32、B +InputA -Input+-+-NJM2068MD-TE2 (X3505A00)MIX3: IC201PSUSB: IC201, IC202Dual Operational Amplifier1234-V8765Output A+VNon-InvertingInput A-DC Voltage Supply+DC VoltageSupplyOutput BInvertingInput BNon-InvertingInput BInvertingInput A+-+-NJM4580L (XF195A00)MIX3: IC303Dual Operational Amplifier1A234

33、5678OUTA-INA+INA+INB-INBOUTB-V+V-+B-+BA4560RF-E2 (X6897A00)MIX3: IC301, IC302, IC401Dual Operational Amplifier1234-V8765Output 1+V+Input 1VEEVCCOutput 2-Input 2+Input 2-Input 1+-+-12348765GNDEN1EN2/OC1OUT1OUT2/OC2INBD2056AFJ-E2 (X9691A00)PSUSB: IC301USB High Side SwitchGateLogic1TSD1TSD2Chargepump1O

34、CD1OCD2SW1SW2UVLO83241765/OC1EN1EN2GNDIN/OC2OUT1OUT2Chargepump2GateLogic2AUDIOGRAM310 CIRCUIT BOARDS（基板図）JACK3 Circuit Board (X9390D0) . 11MIX3 Circuit Board (X9390D0) .10PSUSB Circuit Board (X9388C0) . 11Note: See parts list for details of circuit board component parts.注 : 部品詳細参照。to JACK3-CN101to J

35、ACK3-CN301to PSUSB-CN702PHANTOMMIC/INSTLEVEL1PEAK L PEAK RPOWERSIG LSIG RLEVEL2LEVEL2LEVELOUTLEVELOUTPHANTOM MIX3 Circuit BoardComponent side（部品側）Pattern side（側）MIX3: 2NA-WM90310-1 211AUDIOGRAM3JACK3: 2NA-WM90310-1 2PSUSB: 2NA-WW90300-1 1to MIX3-CN102to MIX3-CN302MIC/INSTLRLRLRLRPHONESPHONESLINESTER

36、EO OUTX9390C0R502USBto MIX3-CN501 JACK3 Circuit BoardComponent side（部品側）Pattern side（側） PSUSB Circuit BoardComponent side（部品側）Pattern side（側）AUDIOGRAM3121. Measurement condition1-1 Environment Temperature (5C 40C) Humidity (30% 90%)1-2 Power supply Power is supplied from a personal computer. (Powere

37、d through USB bus)2. Electric characteristics2-0 0 dBu = 0.775 Vrms2-1 Preparation Load resistor of each output terminal is as follows: PHONES (L, R) : 40 (3 W or more) Others : 10k 2-2 Unless otherwise specifi ed, the operation elements shall be set as follows, INPUT1 LEVEL control (GAIN control) :

38、 Maximum MIC/INST switch : OFF (MIC) INPUT2 LEVEL control (GAIN control) : Maximum OUTPUT LEVEL control (MASTER level control) : Maximum Others PHANTOM switch : OFF2-3 Use 1 kHz sine wave for input signal unless otherwise specifi ed.2-4 Signal source impedance should be 150 .2-5 Power indicator Chec

39、k that the POWER LED lights when the personal computer is connected. INSPECTIONSINPUT1INPUT2OUTPUTLevel control(GAIN control)Level control(GAIN control)Level control(MASTER Level control)MIC/INST switchPHANTOM switch13AUDIOGRAM32-6 Gain Check that the output level of each output terminal is within t

40、he range shown in the Table 2-6.1 and Table 2-6.2. * Check that the difference in the level between channels is 2.0 dB or less. Table 2-6.1 INPUT1 dBuINPUTInputlevelLEVELcontrolSTEREO OUT L(PHONE)STEREO OUT R(PHONE)qPHONE-66.0Maximum-2.0 2.0wXLR-22.0Minimum-3.0 2.0-3.0 2.0ePHONE(UNBAL)-50.0Maximum-2

41、.0 2.0 *1r-6.0Minimum-2.0 2.0 *1*1 Set the MIC/INST switch to ON (INST). Table 2-6.2 INPUT2 dBuINPUTInputlevelLEVELcontrolSTEREO OUT L(PIN)STEREO OUT R(PIN)PHONES LPHONES RtPHONE(UNBAL)L-40.0Maximum-2.0 2.0-14.8 2.0yR-2.0 2.0-14.8 2.0uPINL+4.0Minimum-2.0 2.0iR-2.0 2.02-7 Frequency characteristics In

42、 the signal path of q to i in the Table 2-6.1 and Table 2-6.2, check that the output level of each output terminal is within the range of +1.0/-3.0 dB compared with that of 1 kHz when the signal frequency is set to 20 Hz and 20 kHz. (LEVEL control (GAIN control) : Minimum) * Check that the frequency

43、 characteristics is within the range of +1.0/-4.5 dB when the signal frequency is set to 20 Hz and 20 kHz and the LEVEL control (GAIN control) is at maximum.2-8 Crosstalk Input signal from the INPUT2 L and check that the leakage level to the STEREO OUT R is -57.0 dBu or less when the output level of

44、 the STEREO OUT L is +10.0 dBu. Input signal from the INPUT2 R and check that the leakage level to the STEREO OUT L is -57.0 dBu or less when the output level of the STEREO OUT R is +10.0 dBu. * Set the LEVEL control of the INPUT1 and INPUT2 to minimum. * Set the LEVEL control of the OUT to NOMINAL.

45、 (Direction of clock hand at 3 oclock)2-9 MASTER PEAK/SIGNAL indicator Check that the MSTER PEAK/SIGNAL LED lights up when a signal within the range shown in the Table 2-9.1 is fed to the input. Table 2-9.1 dBuINPUTInput levelPEAKSIGNAL1-44.0 2.0-64.0 2.02-10 Distortion In the signal path of w, r, u

46、 and i of the Table 2-6.1 and Table 2-6.2, check that the distortion (T.H.D.) is 0.1% or less when the output level of the STEREO OUT L, R is +8.0 dBu. * Change the input signal frequency to “20 Hz”, “1 kHz” and “20 kHz” and measure distortion (T.H.D.). * Set the LEVEL controls of the channels which

47、 are not measured to minimum.AUDIOGRAM3142-11 Maximum output Input signal to the INPUT1 and check that the distortion (T.H.D.) is 1.0 % or less when the output signal at the STEREO OUT L, R is +14.0 dBu. Check that the distortion (T.H.D.) is 1.0% or less when the output level at the PHONES L, R is 0

48、.0 dBu. * Set the LEVEL control of the INPUT2 to minimum. * Do not connect a load resistor to the PHONES L, R when measuring the STEREO OUT L, R.2-12 Equivalent input noise Check that the noise level of the STEREO OUT L, R is -61.0 dBu or less when the pin 2 and pin 3 of the XLR terminal are connect

49、ed with the resistance of 150 . If the noise level is -61.0 dBu or more, check that the input equivalent noise level is -125.0 dBu or less. * Equivalent input noise level = Noise level - Channel gain * Set the LEVEL control of the INPUT2 to minimum. * Use the 12.7 kHz, -6 dB/octave Low Pass Filter w

50、hen measuring the noise level. * Set the parameter of the analyzer to the “Mean value” when measuring noise level.2-13 Residual Noise Set the LEVEL control of the INPUT part to minimum. Check that the noise level of the STEREO OUT L, R is equal to or less than the one shown in the Table 2-13.1 when