Yamaha-MG-10-2-Service-Manual电路原理图.pdf

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1、SERVICE MANUAL SPECIFICATIONS (総合仕様) . 3/5 DIMENSIONS (寸法図). 7 PANEL LAYOUT () . 8 CIRCUIT BOARD LAYOUT R: cold; S: ground) +10 2 dBu (0.616 V) +10 dBu (2.45 V) +30 dBu (24.5 V) 60 3 k50600 mic 72 dBu (0.195 mV) 60 dBu (0.775 mV) 40 dBu (7.75 mV) XLR-3-31 type (balanced) 16 28 dBu (30.9 mV) 16 dBu (

2、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) 34 10 k600 line 46 dBu (3.88 mV) 34 dBu (15.5 mV) 14 dBu (155 mV) Phone jack (unbalanced) +10 2 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

3、line 22 dBu (61.6 mV) 10 dBu (245 mV) +10 dBu (2.45 V) Phone jack (unbalanced); RCA pin jack CH INSERT IN (CH 1, 2) 10 k600 line 20 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 line 12 dBu (195 mV) +4 dBu (1.23 V) +24

4、dBu (12.3 V) Phone jack (TRS) (unbalanced T: hot; S: ground) 2TR IN (L, R)10 k600 line 26 dBV (50.1 mV) 10 dBV (316 mV) +10 dBV (3.16 V) RCA pin jack Output Connectors Output Impedance Appropriate Impedance Rated Level Max. Before Clipping Connector Specifi cations ST OUT (L, R)150 10 k line+4 dBu (

5、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)

6、(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 jack C-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 jack I Input Specificatio

7、ns I Output Specifications Where 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 V MG10/2 5 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

8、(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 OUT 76 dB CH MIC INPUT ST OUT 64.2 dB CH MIC INPUT REC OUT 70 dB CH MIC I

9、NPUT AUX SEND1 (PRE) 76 dB CH MIC INPUT AUX SEND2 (POST) 最大電圧 *2 76 dB ST CH MIC INPUT ST OUT 50 dB ST CH LINE INPUT ST OUT 41 dB ST CH LINE INPUT AUX SEND1 (PRE) 47 dB ST CH LINE INPUT AUX SEND2 (POST) 26 dB ST CH INPUT ST OUT 12 dB AUX RETURN ST OUT 23.8 dB 2TR INPUT ST OUT 、44 dB 可変 、80 Hz 12 dB/

10、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

11、 D)251 65 290.5 mm 質量1.8 kg *1Rs = 150 ohms 12.7 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 6 MG10/2 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) 60 3 k 50 600 72 dBu ( 0.195 mV) 60 dBu ( 0

12、.775 mV) 40 dBu ( 7.75 mV) XLR-3-31 (型) 16 28 dBu ( 30.9 mV) 16 dBu ( 123 mV) +4 dBu ( 1.23 V) LINE INPUT (CH1、 2) 34 10 k 600 46 dBu ( 3.88 mV) 34 dBu ( 15.5 mV) 14 dBu ( 155 mV) ( TRS) ( 型 T:、 R: 、 S:) +10 2 dBu ( 0.616 V) +10 dBu ( 2.45 V) +30 dBu ( 24.5 V) ST CH MIC INPUT 60 3 k 50 600 72 dBu (

13、0.195 mV) 60 dBu ( 0.775 mV) 40 dBu ( 7.75 mV) XLR-3-31 (型) 16 28 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) 34 10 k 600 46 dBu ( 3.88 mV) 34 dBu ( 15.5 mV) 14 dBu ( 155 mV) (型) +10 2 dBu ( 0.616 V) +10 dBu ( 2.45 V) +30 dBu ( 24

14、.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

15、.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

16、、 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: ) PHONES 100 40 3 mW75 mW I 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

17、 = 0.775 V、0 dBV = 1 V MG10/2 7 251 290.5 65 Units: mm (単位) I DIMENSIONS (寸法図) 8 MG10/2 1 2 3 4 5 6 7 1 2 3 4 5 6 7 1 2 3 4 5 6 7 GAIN Control PEAK Indicator 80 Switch (High Pass Filter) Equalizer (HIGH, MID, and LOW) AUX Controls PAN Control (CHs 1 and 2) PAN/BAL Control (CHs 3/4 and 5/6) BAL Contr

18、ol (CHs 7/8 and 9/10) Channel Fader PHANTOM +48 V Switch RETURN Control 2TR IN Control ST Master Fader C-R/PHONES Control Level Meter POWER Indicator PHANTOM +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) 1 2 3 4 5 6 7

19、GAIN 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) MG10/2 9 1 2 3 4 5 6 7 8 9 10 Channel 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

20、 IN Jacks REC OUT (L, R) Jacks ST OUT (L, R) Jacks C-R OUT Jacks SEND Jacks RETURN L (MONO), R Jacks PHONES Jack 1 2 3 4 5 6 7 8 9 10 INPUT 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 1 2 1 2

21、 AC ADAPTOR IN Connector POWER Switch AC ADAPTOR IN 端子 電源 Input/Output Section (入出力部) Rear Section (部) 10 MG10/2 MIC INPUT Pin 1: Ground Pin 2: Hot (+) Pin 3: Cold () LINE INPUT (monaural channels), ST OUT, C-R OUT, AUX1, AUX2* Tip: Hot (+) Ring: Cold () Sleeve: Ground INSERT I/O Tip: Output Ring: I

22、nput Sleeve: Ground PHONES Tip: L Ring: R Sleeve: Ground RETURN, LINE INPUT (stereo channels) Tip: Hot Sleeve: Ground INPUTOUTPUT Ring SleeveTip SleeveTip MIC INPUT 1: 2:( +) 3:( ) LINE INPUT()、 ST OUT、 C-R OUT AUX 1、 AUX 2 :( +) :( ) : INSERT I/O : Output : Input : PHONES : L : R : RETURN LINE INPU

23、T () : : INPUTOUTPUT Connector 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. MG10/2 11 MAIN Power switch and AC connector wiring (電源AC結線) (a). Twist Wiring Assy AC8 three times,and fix t

24、o 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 tighte

25、ns the screw. 時、線材(黒)締穴塞注意。 Top Cover WA595401 (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 circui

26、t board) Rear view Top view Right side view I CIRCUIT BOARD LAYOUT & WIRING ( & 結線図) 12 MG10/2 250: 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

27、-B(BBOND)3.0X10 MFZN2B3 (WE878000) Fig .1(図1) 260 250 250 250 250 250 260 270 280 Hexagonal 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 x2 AC support (AC) AC connector (AC) Power switch (電源) Bottom case () MAIN Rear vi

28、ew Top view 1.Bottom Case (Time required: About 1 minute) 1-1Remove the five (5) screws marked 250 and the two (2) screws marked 260. The bottom case can then 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) MG10/2 13 AC support (AC) Claw () Claw () AC

29、connector (AC) Hexagonal nut and 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 support can then be removed. (Fig. 1, Photo. 1) 3. MAI

30、N Circuit Board (Time required: About 8 minutes) 3-1Remove the bottom case. (See procedure 1.) 3-2Remove the AC support. (See procedure 2.) 3-3Remove the ten (10) screws marked 280, the twenty-one (21) hexagonal nuts and the eight (8) level knobs marked A. The MAIN circuit board can then be removed.

31、 (Fig. 1) The knobs, buttons and meter cover on the MAIN circuit board are not components of the circuit board. When replacing the MAIN circuit board, be sure to remove these parts according to the following procedure. 3-4Remove the thirty-six (36) volume knobs marked B, the four (4) push HPF button

32、s and the push PFL button from the MAIN circuit board. (Fig. 1) 3-5Remove the meter cover from the MAIN circuit board. (Fig. 1) 2.AC (所要時間:約2 分) 2-1外。 (1 項参照) 2-2270 1 本外、AC 外。 (図1 、写真1) 3.MAIN (所要時間:約8 分) 3-1外。 (1 項参照) 3-2AC 外。 (2 項参照) 3-3280 10 本特殊六角21 個、A (LEVEL) 8 個外、MAIN 外。 (図1) MAIN 上、METER 、構

33、成部品。MAIN 交換際、以下手順部品取 外。 3-4MAIN B (VR) 36 個 (HPF) 4 個、 (PFL) 1 個外。 (図1) 3-5MAIN METER 外。 (図1) 4.Power Switch and AC Connector (Time required: About 2 minutes each) 4-1Remove the bottom case. (See procedure 1.) 4-2Remove the AC support. (See procedure 2.) 4-3Remove the power switch by bending its cla

34、w from the AC support. (Photo. 2) 4-4Remove the hexagonal nut and the flat washer. The AC connector can then be removed from the AC support. (Photo. 2) 4.電源AC (所要時間:各約2 分) 4-1外。 (1 項参照) 4-2AC 外。 (2 項参照) 4-3電源曲、AC 電 源外。 (写真2) 4-4特殊六角1 個平1 個外、 AC AC 外。 (写真 2) 14 MG10/2 NJM4558M (TE1) (X5676A00) MAIN:

35、IC103, 304, 404, 503, 603 Dual Operational Amplifier NJM4556AL (XP844A00) MAIN: IC806 Dual Operational Amplifier LB1412M (X5838A00) MAIN: IC803, 805 LED Driver NJM2068M-D (TE2) (X3505A00) MAIN: IC202, 302, 303, 402, 403, 501, 502, 601, 602, 701, 702, 802 NJM4580ED (XT157A00) MAIN: IC101, 201, 301, 4

36、01, 801, 804 Dual Operational Amplifier 13 10 9 8 16 7 6 5 4 3 2 23 22 21 20 19 18 17 141512 11 +- +- + - + - + - + - + - + - + - + - + - + - + - + - OSC CURENT DRIVER CURENT DRIVER VZ OUT2 RESETOSCILED D1 D2 D3 D4 D5 D6 D7 D8 D9 D10 D11 D12 IN2 OUT1 IN1 VCC GND R SQ R SQ Q R SQ Q R SQ Q R SQ Q 1 2

37、3 4-V 8 7 6 5 Output A+V Non-Inverting Input A -DC Voltage Supply +DC Voltage Supply Output B Inverting Input B Non-Inverting Input B Inverting Input A+- +- 1 2 3 4-V 8 7 6 5 Output A+V Non-Inverting Input A Ground +DC Voltage Supply Output B Inverting Input B Non-Inverting Input B Inverting Input A

38、+- +- 1 A 2345678 OUT A -IN A +IN A +IN B -IN B OUT B -V+V - + B - + 1NC 2 3 4 5 7 D8 D9 D10 D11 D12 IN1 OUT1 IN2 OUT2 RESET GND18 19 20 21 22 23 24NC D7 D6 D5 D4 D3 D2 D1 VCC I LED OSC VZ 6 8 9 10 11 13 14 15 16 17 12 I IC BLOCK DIAGRAM (IC 図) MG10/2 15 MIC 12 12 12 7 L 8 R 9 L 10 R 3/45/6 3 L (MON

39、O) 5 L (MONO) 4 R6 R L (MONO) R AUX1 (PRE) AUX2 PHONES SENDRETURN 7 L 8 R 9 L 10 R L R L ST OUTC-R OUT R L R L R LINE INSERT I/O GAIN PEAKPEAK PEAKPEAK HPF HIGH MID LOW AUX PAN LEVEL 123/45/67/89/10 PAN/BALPAN/BAL BALBAL PHANTOM +48V L PEAK +5 +3 +1 0 -1 -3 -5 -7 -10 -15 -20 R POWER RETURN 2TR IN ST

40、 ST C-R/PHONESST I CIRCUIT BOARD (基板図) MAIN Circuit Board Note: See parts list for details of circuit board component parts. 注:部品詳細参照。 Component side (部品側) 2NA-WE52140 16 MG10/2 MAIN Circuit Board Pattern side (側) 2NA-WE52140 MG10/2 17 1.Measurement conditions 1-1.Environment Normal temperature (10

41、to 35C) Normal humidity (45 to 85%) 1-2.Power Source The voltage is within +/-10%. AC Adaptor (PA-10) shall be used. WC703600 (H,W:230V) or WC703500 (U,V:120V), WC703700 (B:230V), WC703800 (K:220V), WC703900 (A:240V), WC711000 (O:220V) 2.Electric characteristics 2-1.Preparation The load resistances

42、for each output terminals are as follows, PHONES (L/ R):40 ohms Others:10 kohms 2-2.Unless otherwise specified, the operation elements shall be set as follows, CH (1-2) INPUT GAIN controlMAX(-60dBu) 80 switchOFF EQ (HIGH, MID, LOW) level controlCENTER AUX level controlPRE(turned counterclockwise ful

43、ly) PAN controlL(turned counterclockwise fully) CH LEVEL VRMAX ST CH (3/4, 5/6) GAIN controlMIC:MAX(-60dBu) 80 switchOFF EQ (HIGH, MID, LOW) level controlCENTER AUX level controlPRE(turned counterclockwise fully) PAN/BAL controlL(turned counterclockwise fully) CH LEVEL VRMAX ST CH (7/8, 9/10) EQ (HI

44、GH, MID, LOW) level controlCENTER AUX level controlPRE(turned counterclockwise fully) BAL controlL(turned counterclockwise fully) CH LEVEL VRMAX MASTER control RETURN to ST level controlMAX 2TR IN to ST level controlMAX C-R/PHONES level controlMAX ST Master VRMAX Others PHANTOM switchOFF 2-3.Unless

45、otherwise specified, the input signal shall be 1kHz sine wave. 2-4.The input signal impedance shall be 150 ohms. 2-5.Indicator Inspection POWER LED shall light when the unit is turned on. I INSPECTIONS 18 MG10/2 INPUTINPUT LevelGain INSERT OUT REC OUT LREC OUT R 1,2 Mic 1, 2-72Max CH INSERT IN 10Uns

46、pecified CH INSERT IN 20Unspecified INPUTINPUT CHINPUT LevelGainST L OUTST R OUTAUX1AUX2 Mic -72Max -28Min PHONE JACK 3,5L -46Max 4,6R Table 2.6.3 Input Terminal STEREO IN dBu w e r INPUTINPUT CHINPUT Level INPUT Level INPUT Level ST L OUTST R OUTAUX1AUX2 PHONE JACK 7L,9L 8R,10R -22 PIN JACK 7L,9L 8

47、R,10R Table 2.6.4 Input Terminal STEREO IN dBu t y u i INPUTST L OUTST R OUT L/MONO -8 R Table 2.6.5 Input Terminal RETERN L,R dBu o !0 INPUTST L OUTST R OUT C-R OUT L C-R OUT RPHONES L PHONES R L -35.8 R Table 2.6.6 Input Terminal 2TR IN L,R dBu !1 !2 Table 2.6.2 dBu +1 +/-2 *1 0 +/-2 *10 +/-2 *1 +

48、1 +/-2 *1 +1 +/-2 *1+1 +/-2 *2 -12 +/-2 +4.2 +/-2+4.2 +/-2 +4.2 +/-2 +1 +/-2 +1 +/-2 +7 +/-2 *2 +7 +/-2 *2 -5 +/-2 +4 +/-2 +4 +/-2 +4 +/-2 +4 +/-2 -2 +/-2+4 +/-2 *2 +4 +/-2+4 +/-2 +4 +/-2 +4 +/-2 +4 +/-2 -12 +/-2 -12 +/-2 -7.5 +/-2 -7.5 +/-2 INPUT INPUT GainST L OUTST R OUTAUX1AUX2C-R OUT LC-R OUT R Level Mic-72Max0 +/-2 *1+5 +/-2 *20 +/-2 *1+16 +/-2 *1+16 +/-2 *1-1 +/-2 0 +/-2 *1 +1 +/-2 *1-28Min Line-46Max Table 2.6.1 CH INPUT(1, 2) dBu q 2-7.Frequency Characteristics In the signal routes

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