Yamaha-MG10_2-mix-sm 维修电路原理图.pdf

SERVICE MANUALSPECIFICATIONS （総合仕様） . 3/5DIMENSIONS （寸法図）. 7PANEL LAYOUT （） . 8CIRCUIT BOARD LAYOUT & WIRING（結線図） . 11DISASSEMBLY PROCEDURE （分解手順） . 12IC BLOCK DIAGRAM （IC 図） . 14CIRCUIT BOARD （基板図） . 15INSPECTIONS （検査） . 17/21PARTS LISTBLOCK DIAGRAM & LEVEL DIAGRAM（）OVERALL CIRCUIT DIAGRAM （総回路図）I CONTENTS （目次）HAMAMATSU, JAPANHAMAMATSU, JAPANCopyright (c) Yamaha Corporation. All rights reserved. PDF-K344 05.08011780200306-14800PAMIXING CONSOLEA manufacture number should use thismanual with goods of 9 or more figures.（本、製造番号9桁以上商品使用。）The example of a manufacture number.（製造番号例）JCLJ01001UCCLJ01001CHNCL010019-11 figures（911桁）The service manual of PA 011679 shouldbe used for the goods whose manufacturenumber is 7 figures.（製造番号7桁商品、PA 011679 使用。）The example of a manufacture number.（製造番号例）LK010017 figures（7桁）RadioFans.CN 收音机爱 好者资料库2MG10/2IMPORTANT NOTICEThis manual has been provided for the use of authorized Yamaha Retailers and their service personnel. It has been assumedthat basic service procedures inherent to the industry, and more specifically Yamaha Products, are already known and under-stood 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 per-sonal injury, destruction of expensive components and failure of the product to perform as specified. Forthese reasons, we advise all Yamaha product owners that all service required should be performed by anauthorized Yamaha Retailer or the appointed service representative.IMPORTANT :This presentation or sale of this manual to any individual or firm does not constitute authorization, certifi-cation, recognition of any applicable technical capabilities, or establish a principal-agent relationship ofany form.The data provided is believed to be accurate and applicable to the unit (s) indicated on the cover. The research engineering, andservice departments of Yamaha are continually striving to improve Yamaha products. Modifications are, therefore, inevitableand changes in specification are subject to change without notice or obligation to retrofit. Should any discrepancy appear toexist, please contact the distributors Service Division.WARNING :Static discharges can destroy expensive components. Discharge any static electricity your body may haveaccumulated by grounding yourself to the ground bus in the unit (heavy gauge black wires connect tothis bus).IMPORTANT :Turn the unit OFF during disassembly and parts replacement. Recheck all work before you apply powerto the unit.WARNING: CHEMICAL 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 cancer and/or birth defects or other reproductive harm.DO NOT PLACE SOLDER, ELECTRICAL/ELECTRONIC OR PLASTIC COMPONENTS IN YOUR MOUTH FOR ANY REASON WHATSO EVER!Avoid prolonged, unprotected contact between solder and your skin! When soldering, do not inhale solder fumes or exposeeyes to solder/flux vapor!If you come in contact with solder or components located inside the enclosure of this product, wash your hands before handlingfood.I WARNINGComponents having special characteristics are marked and must be replaced with parts having specification equal tothose originally installed. 印部品、安全維持重要部品。交換場合、安全必指定部品使用。IMPORTANT NOTICE FOR THE UNITED KINGDOMConnecting the Plug and CordIMPORTANT. The wires in this mains lead are coloured in accordance with the following code:BLUE:NEUTRALBROWN :LIVEAs the colours of the wires in the mains lead of this apparatus may not correspond with the coloured markings identifying the terminals in yourplug proceed as follows:The wire which is coloured BLUE must be connected to the terminal which is marked with the letter N or coloured BLACK.The wire which is coloured BROWN must be connected to the terminal which is marked with the letter L or coloured RED.Making sure that neither core is connected to the earth terminal of the three pin plug.RadioFans.CN 收音机爱 好者资料库MG10/23Frequency Characteristics (ST OUT)20 Hz-20 kHz +1 dB, -3 dB +4 dBu, 10 k (with gain control at maximum level)Total Harmonic Distortion (ST OUT)0.1 % (THD+N) +14 dBu, 20 Hz-20 kHz, 10 k (with gain control at maximum level)(CHs 1 and 2)-128 dBuEquivalent input noise (CHs 1 and 2)-100 dBuResidual output noise (ST OUT)Hum and Noise 1-87 dBu (91 dB S/N)ST, Master fader at nominal level and all Ch at minimum level.-85 dBu (89 dB S/N)All channel mix controls at minimum level.-64 dBu (68 dB S/N)ST, Master fader and one Ch fader at nominal level.(CHs 1 and 2)60 dB CH MIC INPUT CH INSERT OUT76 dB CH MIC INPUT ST OUT64.2 dB CH MIC INPUT REC OUT70 dB CH MIC INPUT AUX SEND1 (PRE)76 dB CH MIC INPUT AUX SEND2 (POST)Maximum Voltage Gain 276 dB ST CH MIC INPUT ST OUT50 dB ST CH LINE INPUT ST OUT41 dB ST CH LINE INPUT AUX SEND1 (PRE)47 dB ST CH LINE INPUT AUX SEND2 (POST)26 dB ST CH INPUT ST OUT12 dB AUX RETURN ST OUT23.8 dB 2TR INPUT ST OUTMonaural/Stereo Input Gain Control44 dB variableMonaural/Stereo High Pass Filter80 Hz 12 dB/octaveCrosstalk (1 kHz)-70 dB between input channels-70 dB between input/output channels (CHs 1 to 6)+/-15 dBMonaural/Stereo Input Channel Equalization:HIGH 10 kHz shelvingMax. Variation 3MID 2.5 kHz peakingLOW 100 Hz shelvingMonaural/Stereo Input Peak IndicatorOn each channel: red indicator lights if post-EQ signal (on ST channels, if either post-EQ sig-nal or post-mic-amp signal) comes within 3 dB of the clipping level.Two 12-point LED meters Stereo (L, R)Level MetersPeak point: red indicator+5, +3, +1, and 0 points: yellow indicators-1, -3, -5, -7, -10, -15, -20: green indicatorsPhantom +48 VDC Power (Balanced input)Supplied when Phantom +48 V switch is ON.Included AccessoryPower adaptor (PA-10)OptionMicrophone-stand adaptor (BMS-10A)USA and Canada:120 V AC, 60 HzEurope:230 V AC, 50 HzPower SupplyAustralia:240 V AC, 50 HzKorea:220 V AC, 60 HzChina:220 V AC, 50 HzPower Consumption19 WMax. Dimensions (W x H x D)251 x 65 x 290.5 mmWeight1.8 kgI General Specifications1Measured with 12.7 kHz, -6 dB/oct. low pass filter (equivalent to 20 kHz, - filter).(CH MIC INPUT to ST, AUX, EFFECT SEND)2Turning PAN/BAL to left or right.3Shelving turnover/rolloff frequency: 3 dB before maximum cut or boost.Where 0 dBu = 0.775V and 0 dBV = 1 VI SPECIFICATIONS4MG10/2Input ConnectorGainInput ImpedanceAppropriate ImpedanceSensitivity*Rated LevelMax. Before ClippingConnector SpecificationsMIC INPUT(CH 1-2)603 k50600 mic72 dBu (0.195 mV)60 dBu (0.775 mV)40 dBu (7.75 mV)XLR-3-31 type (balanced)1628 dBu (30.9 mV)16 dBu (123 mV)+4 dBu (1.23 V)LINE INPUT(CH 1, 2)3410 k600 line46 dBu (3.88 mV)34 dBu (15.5 mV)14 dBu (155 mV)Phone jack (TRS) (balanced T: hot; R: cold;S: ground)+102 dBu (0.616 V)+10 dBu (2.45 V)+30 dBu (24.5 V)603 k50600 mic72 dBu (0.195 mV)60 dBu (0.775 mV)40 dBu (7.75 mV)XLR-3-31 type (balanced)1628 dBu (30.9 mV)16 dBu (123 mV)10 dBu (245 mV)ST CH LINE INPUT(CH3(L)/CH4(R), CH5(L)/CH6(R)ST CH MIC INPUT(CH3/CH4/CH5/CH6) 3410 k600 line46 dBu (3.88 mV)34 dBu (15.5 mV)14 dBu (155 mV)Phone jack (unbalanced)+102 dBu (0.616 V)+10 dBu (2.45 V)+30 dBu (24.5 V)ST CH INPUT(CH7(L)/CH8(R), CH9(L)/CH10(R)10 k600 line22 dBu (61.6 mV)10 dBu (245 mV)+10 dBu (2.45 V)Phone jack (unbalanced);RCA pin jackCH INSERT IN (CH 1, 2) 10 k600 line20 dBu (77.5 mV)0 dBu (0.775 V)+20 dBu (7.75 V)Phone jack (TRS) (unbalanced T: out; R: in;S: ground)AUX RETURN (L, R)10 k600 line12 dBu (195 mV)+4 dBu (1.23 V)+24 dBu (12.3 V)Phone jack (TRS) (unbalanced T: hot; S: ground)2TR IN (L, R)10 k600 line26 dBV (50.1 mV)10 dBV (316 mV)+10 dBV (3.16 V)RCA pin jackOutput ConnectorsOutput ImpedanceAppropriate ImpedanceRated LevelMax. Before ClippingConnector Specifications ST OUT (L, R)150 10 k line+4 dBu (1.23 V)+20 dBu (7.75 V)Phone jack (TRS) (impedance balanced T: hot; R: cold; S: ground)AUX SEND (1, 2)150 10 k line+4 dBu (1.23 V)+20 dBu (7.75 V)Phone jack (TRS) (impedance balanced T: hot; R: cold; S: ground)CH INSERT OUT (CH 1, 2) 150 10 k line0 dBu (0.775 V)+20 dBu (7.75 V)Phone jack (TRS) (unbalanced T: out; R: in; S: ground)REC OUT (L, R)600 10 k line10 dBV (316 mV) +10 dBV (3.16 V)RCA pin jackC-R OUT (L, R)150 10 k line+4 dBu (1.23 V)+20 dBu (7.75 V)Phone jack (TRS) (impedance balanced T: hot; R: cold; S: ground)PHONES 100 40 phone3 mW75 mWStereo phone jackI Input SpecificationsI Output SpecificationsWhere 0 dBu = 0.775V and 0 dBV = 1 V* Input sensitivity: the lowest level that will produce the nominal output level when the unit is set to maximum gain.Where 0 dBu = 0.775V and 0 dBV = 1 VMG10/25周波数特性 （ST OUT）20 Hz20 kHz +1 dB、-3 dB +4 dBu （） 、10 k （GAIN 最大）全高調波歪率 （ST OUT）0.1 % （THD+N） +14 dBu, 20 Hz20 kHz 、10 k （GAIN 最大）(CH1 、2)-128 dBu入力換算 (CH1、2)-100 dBu残留 (ST OUT)-87 dBu (91 dB S/N)ST & *1全最小-85 dBu (89 dB S/N)全最小-64 dBu (68 dB S/N)ST 1(CH1 、2)60 dB CH MIC INPUT CH INSERT OUT76 dB CH MIC INPUT ST OUT64.2 dB CH MIC INPUT REC OUT70 dB CH MIC INPUT AUX SEND1 (PRE)76 dB CH MIC INPUT AUX SEND2 (POST)最大電圧 *276 dB ST CH MIC INPUT ST OUT50 dB ST CH LINE INPUT ST OUT41 dB ST CH LINE INPUT AUX SEND1 (PRE)47 dB ST CH LINE INPUT AUX SEND2 (POST)26 dB ST CH INPUT ST OUT12 dB AUX RETURN ST OUT23.8 dB 2TR INPUT ST OUT、44 dB 可変、80 Hz 12 dB/octave(1 kHz)-70 dB 入力間-70 dB 入出力間 (CH16)+/-15 dB、入力HIGH 10 kHz 特性最大可変幅 *3MID 2.5 kHz LOW 100 Hz 、各、 （MIC ：ST CH ） 後段、一方信号手前3 dB達赤点灯12 LED 2 （L 、R ） 時：赤+5、+3、+1、0：黄-1、-3、-5、-7、-10、-15、-20：緑電源 +48 VDC （入力）PHANTOM +48 V ON 供給付属品電源 (PA-10) （BMS-10A ）電源100 V AC 50/60 Hz消費電力19 W最大外形寸法 （W H D）251 65 290.5 mm質量1.8 kg*1Rs = 150 ohms12.7 kHz、-6 dB/oct.測定（20 kHz、-dB/oct.相当）（CH MIC INPUT to ST 、AUX 、EFFECT SEND）*2PAN/BAL 左右回*3/周波数：最大可変幅対3 dB下 0 dBu = 0.775 V、0 dBV = 1 V I 一般仕様I 総合仕様6MG10/2入力端子名称入力適合感度 *1規定最大端子仕様 MIC INPUT(CH1-2） 603 k 50 600 72 dBu（ 0.195 mV） 60 dBu（ 0.775 mV） 40 dBu（ 7.75 mV） XLR-3-31 （型） 1628 dBu（ 30.9 mV） 16 dBu（ 123 mV） +4 dBu（ 1.23 V） LINE INPUT(CH1、 2)3410 k 600 46 dBu（ 3.88 mV） 34 dBu（ 15.5 mV） 14 dBu（ 155 mV）（ TRS） （型 T：、 R: 、 S：） +102 dBu（ 0.616 V） +10 dBu（ 2.45 V） +30 dBu（ 24.5 V） ST CH MIC INPUT603 k 50 600 72 dBu（ 0.195 mV） 60 dBu（ 0.775 mV） 40 dBu（ 7.75 mV） XLR-3-31 （型） 1628 dBu（ 30.9 mV） 16 dBu（ 123 mV） 10 dBu（ 245 mV） ST CH LINE INPUT(CH3(L)/CH4(R)、 CH5(L)/CH6(R)(CH3/CH4/CH5/CH6)3410 k 600 46 dBu（ 3.88 mV） 34 dBu（ 15.5 mV） 14 dBu（ 155 mV）（型） +102 dBu（ 0.616 V） +10 dBu（ 2.45 V） +30 dBu（ 24.5 V） ST CH INPUT(CH7(L)/CH8(R)、 CH9(L)/CH10(R)10 k 600 22 dBu（ 61.6 mV） 10 dBu（ 245 mV） +10 dBu（ 2.45 V）（型）、 RCA CH INSERT IN (CH1、 2)10 k 600 20 dBu（ 77.5 mV） 0 dBu（ 0.775 V） +20 dBu（ 7.75 V）（ TRS）（型 T：、 R：、 S：） AUX RETURN (L、 R)10 k 600 12 dBu（ 195 mV） +4 dBu（ 1.23 V） +24 dBu（ 12.3 V）（ TRS）（型 T: 、 S: ） 2TR IN (L、 R)10 k 600 26 dBV（ 50.1 mV） 10 dBV（ 316 mV） +10 dBV（ 3.16 V） RCA 出力端子名称出力適合規定最大端子仕様 ST OUT (L、 R) 150 10 k +4 dBu（ 1.23 V） +20 dBu（ 7.75 V）（ TRS）（型 T：、 R:、 S: ） AUX SEND (1、 2)150 10 k +4 dBu（ 1.23 V） +20 dBu（ 7.75 V）（ TRS）（型 T：、 R:、 S: ） CH INSERT OUT(CH1、 2)150 10 k 0 dBu（ 0.775 V） +20 dBu（ 7.75 V）（ TRS）（型 T: 、 R：、 S: ） REC OUT (L、 R)600 10 k 10 dBV（ 316 mV） +10 dBV（ 3.16 V） RCA C-R OUT (L、 R)150 10 k +4 dBu（ 1.23 V） +20 dBu（ 7.75 V）（ TRS）（型 T：、 R:、 S: ） PHONES100 40 3 mW75 mWI 入力仕様I 出力仕様 0 dBu = 0.775 V、0 dBV = 1 V *1入力感度：最大測定時定格出力得最小 0 dBu = 0.775 V、0 dBV = 1 V MG10/27251290.565Units: mm（単位）I DIMENSIONS （寸法図）8MG10/2123456712345671234567GAIN ControlPEAK Indicator 80 Switch (High Pass Filter)Equalizer (HIGH, MID, and LOW)AUX ControlsPAN Control (CHs 1 and 2)PAN/BAL Control (CHs 3/4 and 5/6)BAL Control (CHs 7/8 and 9/10)Channel FaderPHANTOM +48 V SwitchRETURN Control2TR IN ControlST Master FaderC-R/PHONES ControlLevel MeterPOWER IndicatorPHANTOM +48 V RETURN 2TR IN ST CR/PHONES POWER Channels 1 and 2(Monaural)Channels 3/4 and 5/6(Stereo)Channels 7/8 and 9/10(Stereo)1234567GAIN PEAK 80 （）（HIGH 、MID 、LOW）AUX PAN （CH 1、2）PAN/BAL （CH 3/4、5/6）BAL （CH 7/8、9/10）I PANEL LAYOUT （） Master Control Section （部） Channel Control Section （部）MG10/2912345678910Channel Input Jacks (CHs 1, 2, 3/4, 5/6)INSERT I/O Jacks (CHs 1, 2)Channel Input Jacks (CHs 7/8, 9/10)2TR IN JacksREC OUT (L, R) JacksST OUT (L, R) JacksC-R OUT JacksSEND JacksRETURN L (MONO), R JacksPHONES Jack12345678910INPUT 端子（CH 1、2、3/4、5/6）INSERT I/O 端子（CH 1、2）INPUT 端子（CH 7/8、9/10）2TR IN 端子REC OUT （L、R）端子ST OUT （L、R）端子CR OUT 端子SEND 端子RETURN L （MONO）、R 端子PHONES 端子1212AC ADAPTOR IN ConnectorPOWER SwitchAC ADAPTOR IN 端子電源 Input/Output Section （入出力部） Rear Section （部）10MG10/2MIC INPUTPin 1: GroundPin 2: Hot (+)Pin 3: Cold ()LINE INPUT (monaural channels),ST OUT, C-R OUT,AUX1, AUX2*Tip: Hot (+)Ring: Cold ()Sleeve: GroundINSERT I/OTip: OutputRing: InputSleeve: GroundPHONESTip: LRing: RSleeve: GroundRETURN,LINE INPUT (stereo channels)Tip: HotSleeve: GroundINPUTOUTPUTRingSleeveTipSleeveTipMIC INPUT 1： 2：（ +） 3：（ ） LINE INPUT（）、 ST OUT、 C-R OUTAUX 1、 AUX 2：（ +）：（ ）： INSERT I/O： Output： Input： PHONES： L： R： RETURNLINE INPUT （）：INPUTOUTPUTConnector Polarities端子接続極性 端子、端子使用。場合、。* These jacks will also accept connection to monaural phone plugs. If you use monaural plugs, the connection will be unbalanced.MG10/211MAINPower switch and AC connector wiring（電源AC結線）(a). Twist Wiring Assy AC8 three times,and fix to a top cover. 束線AC8 3回捻、固定。(b). Adjust the position so that the wire is arranged within the range of the PWB print (reticulation). 線材、基板印刷(網目)範囲内配置位置調整。 (c). Fix the wire by pasting the filament tape to the position of figure. 図位置貼、線材固定。*Note that the wire (black) doesnt shut the hole that tightens the screw. 時、線材(黒)締穴塞注意。Top CoverWA595401 (Connector 3P BROWN, RED, BLACK)(c) VA126400 (Filament Tape)（熱収縮：7箇所）WB071100 (Shrink Tube Black : 7 places) V3272800 (Cord Holder)(a) WD350000 (Connector Assembly AC8 3P BROWN, RED, BLACK) * Hole of Screw(b) Reticulation（網目）WE521400 (MAIN circuit board) Rear view Top view Right side viewI CIRCUIT BOARD LAYOUT & WIRING （ & 結線図）12MG10/2250: Hex. Socket Screw-P（P6角孔付）3X25 MFZN2B3 (WF419200)260: Bind Head Tapping Screw-B（BBIND）3.0X8 MFZN2B3 (WE774400)270: Bind Head Tapping Screw-S（SBIND）3.0X6 MFZN2B3 (WE877800)280: Bonding Tapping Screw-B（BBOND）3.0X10 MFZN2B3 (WE878000)Fig .1(図1)260250250250250250260270280Hexagonal nut x 21（特殊六角）Push HPF button x4（HPF）Push PFL button（PFL）Meter cover（METER）Top cover（）280280280280 A A B x30 B x4 B x2AC support （AC）AC connector（AC）Power switch （電源）Bottom case （）MAIN Rear view Top view1.Bottom Case (Time required: About 1 minute)1-1Remove the five (5) screws marked 250 and thetwo (2) screws marked 260. The bottom case canthen be removed. (Fig. 1)1. （所要時間：約1 分）1-1250 5 本260 2 本外、外。 （図1 ）I DISASSEMBLY PROCEDURE （分解手順）MG10/213AC support（AC）Claw （）Claw （）AC connector（AC）Hexagonal nutand flat washer（特殊六角平）Power switch（電源）AC support （AC）Photo.2 (写真2)Photo.1 (写真1)2.AC Support (Time required: About 2 minutes)2-1Remove the bottom case. (See procedure 1.)2-2Remove the screw marked 270. The AC supportcan then be removed. (Fi