Yamaha-MG10-2 mix 电路图.pdf

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1、MG10/2 1 SERVICE MANUAL PA 011679 200306-14800 Copyright (c) Yamaha Corporation. All rights reserved. PDF-K135 03.04 HAMAMATSU, JAPAN CONTENTS SPECIFICATIONS. 3/5 DIMENSIONS. 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) ST CH MIC IN

2、PUT (CH3/CH4,CH5/CH6) 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 (123 mV) 10 dBu (245 mV) ST CH LINE INPUT (CH3(L)/CH4(R), CH5(L)/CH6(R) 34 10 k600 line 46 dBu (3.88 mV) 34 dBu (15.5 mV) 14 dBu (155 mV) Phone jack (unbalan

3、ced) +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 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

4、(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 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 Appro

5、priate Impedance Rated Level Max. Before Clipping Connector Specifi cations 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: h

6、ot; 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 jack C-R OUT (L, R)150 10 k line+4 dBu (1.23 V)+20 dBu (7.75 V) Phone jack (TRS) (imp

7、edance balanced T: hot; R: cold; S: ground) PHONES 100 40 phone3 mW75 mWStereo phone jack MG10/2 5 総合仕様 一般仕様 0 dBu = 0.775 V、 0 dBV = 1 V *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 周波数特性(ST OUT)20 Hz 20 kHz +1

8、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 Hz 20 kH、 10 k( GAIN 最大) (CH1、 2) & *1 128 dBu 入力換算 (CH1、 2) 100 dBu 残留 (ST OUT) 87 dBu( 91 dB S/N) ST 、 全最小 85 dBu( 89 dB S/N)全最小 64 dBu( 68 dB S/N) ST 1 (CH1、 2) 最大電圧 *2 60 dB CH MIC INPUT CH INSERT OUT 76 dB CH MIC INPUT S

9、T OUT 64.2 dB CH MIC INPUT REC OUT 70 dB CH MIC INPUT AUX SEND1( PRE) 76 dB CH MIC INPUT AUX SEND2( POST) 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

10、 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 (CH1 6) 、入力 特性最大可変幅 *3 15 dB HIGH 10 kHz MID 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-10

11、A) 電源 100 V AC 50/60 Hz 消費電力 19 W 最大外形寸法( W H D) W251 H65 D290.5 mm 質量 1.8 kg MG10/2 6 入力仕様 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 出力仕様 0 dBu=0.775 V、 0 dBV=1 V 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 ( 0.775 mV) 40 dBu ( 7.75 mV) XLR-3-31 (型) 1

12、6 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 (CH3/CH4、 CH5/CH6) 60 3 k 50 600 72 dBu ( 0.195 mV) 60 dBu ( 0.7

13、75 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) 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 ( 24.5 V) ST CH INPUT (CH7(L)/CH8(R)、 CH9(L)

14、/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)

15、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

16、.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 MG10/2 7 DIMENSIONS Units: mm (単位) (寸法図) 251 290.5 65 MG10/2 8 1 2 3 4 5 6 7 1 2 3 4 5 6 7 1 2 3 4 5 6 7 Ch

17、annel Control Section 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 Control (CHs 7/8 and 9/10) Channel Fader PANEL LAYOUT PHANTOM +48 V Switch RETURN Control 2TR IN Control ST Maste

18、r 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 GAIN PEAK 80 () (HIGH 、 MID 、 LOW) AUX PAN (CH 1、2) PAN/BAL (CH 3/4、5/6) BAL (CH 7/8、9/10) (部)

19、() Master 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 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

20、 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 AC ADAPTOR IN Connector POWER Switch AC ADAPTOR IN 端子 電源 Input/Output Section(入出力部) Rear Section(部) MG10/2 10 Connector Pol

21、arities * These jacks will also accept connection to monaural phone plugs. If you use monaural plugs, the connection will be unbalanced. 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

22、 I/O Tip: Output Ring: Input Sleeve: Ground PHONES Tip: L Ring: R Sleeve: Ground RETURN, LINE INPUT (stereo channels) Tip: Hot Sleeve: Ground INPUTOUTPUT Ring SleeveTip SleeveTip 端子接続極性 端子、端子使用。場合、。 MIC INPUT 1: 2:( +) 3:( ) LINE INPUT()、 ST OUT、 C-R OUT AUX 1、 AUX 2 :( +) :( ) : INSERT I/O : Output

23、 : Input : PHONES : L : R : RETURN LINE INPUT () : : INPUTOUTPUT MG10/2 11 CIRCUIT BOARD LAYOUT & WIRING MAIN (色) Power switch and AC connector wiring (電源AC結線) (V975620) (Connector assembly 2P BROWN, RED) Need twist of one rotation. V9737300 (MAIN circuit board)V998150 (Connector assembly 3P BROWN,

24、RED, BLACK) Cable Colors Need twist of one rotation. Wiring to MAIN circuit board (MAIN結線) Cable Tie(結方) Shrink Tube(熱収縮方) (熱収縮:7箇所) (1回。) (1回。) (基板面付。) (電源配線左45 向取付、 白斜線部分出配線。) (束線左引状態止。) RED BLACK RED BROWN BROWN RED WB071100 (Shrink tube: Seven places) VV104600 (Cable Tie) Bundle the four cables

25、connected to power switch by the cable tie and pull to left side. When soldering a wire, it fixed in the state that inclined to the left about 45 degrees, and it wires so that it may not be from white slash area of circuit board. (V998150) is soldering on solder side. Rear view Top view Right side v

26、iew (結線図) MG10/2 12 DISASSEMBLY PROCEDURE 250: Hex. Socket Tapping Screw-P 3X25 MFZNBL (V3289800) 260: Bind Head Tapping Screw-B3.0X8 MFZN2BL (EP600190) 270: Bind Head Tapping Screw-S3.0X6 MFZN2BL (EP630210) 280: Bonding Tapping Screw-B3.0X8 MFZN2BL (VN413300) 1.(所要時間:約1分) 1-1250 5本260 2本外、 外。 (図1)

27、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 (6角孔付P) Rear view Top view 1.Bottom Case (

28、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) (分解手順) (B) (S) (B) MG10/2 13 2. AC(所要時間:約 2分) 2-1外。 (1項参照) 2-22701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

29、21 個、 A (LEVEL) 8個外、 MAIN外。 (図1) MAIN上、 、 METER 、構成部品。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.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、 ACAC外。 (写真2) 2.AC Support (Time required: About 2 minutes) 2-1Remove the b

30、ottom case. (See procedure 1.) 2-2Remove the screw marked 270. The AC support can then be removed. (Fig. 1, Photo. 1) 3.MAIN 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

31、280, the twenty-one (21) hexagonal nuts and the eight (8) level knobs marked A. The MAIN circuit board can then be removed. (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 pa

32、rts according to the following procedure. 3-4Remove the thirty-six (36) volume knobs marked B, the four (4) push HPF buttons and the push PFL button from the MAIN circuit board. (Fig. 1) 3-5Remove the meter cover from the MAIN circuit board. (Fig. 1) 4.Power Switch and AC Connector (Time required: A

33、bout 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 claw 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. (P

34、hoto. 2) AC support (AC) Claw () Claw () AC 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) MG10/2 14 IC BLOCK DIAGRAM NJM4558M (T1) (IG103520) MAIN: IC103, 304, 404, 503, 603 Dual Operational Amplifier NJM4556AL MAIN: IC806 Dual Ope

35、rational Amplifier (XP844A00) LB1412M (XT547A00) MAIN: IC803, 805 LED Driver NJM2068MD-T1 (XJ553A00) MAIN: IC202, 302, 303, 402, 403, 501, 502, 601, 602, 701, 702, 802 NJM4580ED (XT157A00) MAIN: IC101, 201, 301, 401, 801, 804 Dual Operational Amplifier 13 10 9 8 16 7 6 5 4 3 2 23 22 21 20 19 18 17 1

36、41512 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 3 4-V 8 7 6 5 Output A+V Non-Inverting Input A -DC Voltage Supply +DC Voltage Supply Ou

37、tput 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+- +- 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 D

38、9 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 (IC図) MG10/2 15 MAIN Circuit Board CIRCUIT BOARD Note: See parts list for details of circuit board component parts. 注:部品詳細参照。 Component side MIC 12 12 12 7 L 8 R 9 L 10

39、 R 3/45/6 3 L (MONO) 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 POWE

40、R RETURN 2TR IN ST ST C-R/PHONESST (基板図) (部品側) MG10/2 16 Pattern side MAIN Circuit Board (側) 17 MG10/2 INSPECTIONS 1.Scope This inspection specification is applied to the mixer MG10/2. 2.Power Supply AC Adaptor shall be used. V981040(H:230V 50Hz) or V981030(U:120V 60Hz), V981220(B:230V 50Hz), V98168

41、0(K:220V 60Hz), V986200(A:240V 50Hz) 3.Power Indicator Inspection POWER LED shall light when the unit is turned on. 4.Mixer Section Inspection 4.1 Preparation The load resistances for each output terminals are as follows, PHONES (L/ R):40 ohms Others:10 kohms Unless otherwise specified, the operatio

42、n elements shall be set as follows, CH (1-2) INPUT HPF switchOFF GAIN TrimMAX(-60dBu) HI, MID, LO EQ Gain controlCENTER AUX Level controlPRE(turned counterclockwise fully) PAN controlL(turned counterclockwise fully) CH VRMAX ST CH (3/4, 5/6, 7/8, 9/10) GAIN TrimMIC:MAX(-60dBu) LINE: MAX(-34dBu) HI,

43、MID, LO EQ Gain controlCENTER AUX Level controlPRE(turned counterclockwise fully) BAL controlL(turned counterclockwise fully) CH VRMAX MASTER control STEREO Master VRMAX AUX RETURN Level controlMAX 2TR IN Level controlMAX C-R/PHONES Level controlMAX Others PHANTOM switchOFF 4.2 Gain The output level

44、s shall be within the range specified in the Table 4.2.1-4.2.6. 1 Measure with the PAN control set at the center position. For others, turn the PAN control counterclockwise fully for the ST L and turn it clockwise fully for the ST R. 2 Measure with the AUX Level control set at the POST (turn the AUX

45、 Level control clockwise fully) position. INPUT INPUT GainST L OUTST R OUTAUX1AUX2C-R OUT LC-R OUT R Level Mic-72Max0 2 *10 2 *1-1 2+5 2 *2+16 2 *1+16 2 *1 -28Min+1 2 *1 Line-46Max0 2 *1 Table 4.2.1 CH INPUT(1, 2) dBu q MG10/2 18 INPUTINPUT LevelGain INSERT OUT REC OUT LREC OUT R 1-4/8 Mic 1, 2-72Ma

46、x-12 2 CH INSERT IN 10Unspecified+4.2 2+4.2 2 CH INSERT IN 20Unspecified+4.2 2 Table 4.2.2 dBu INPUTINPUT CHINPUT LevelGainST L OUTST R OUTAUX1AUX2 Mic -72Max02 *102 *1+12+72 *2 -28Min+12 *1 PHONE JACK 3,5L -46Max +12 *1+12+72 *2 4,6R+12 *1-52+12 *2 Table 4.2.3 Input Terminal STEREO IN dBu w e r 4.3

47、 Frequency Characteristics In the signal routes of the Table 4.2.1 to 4.2.6 indicated with q to !2, the 20Hz and 20kHz frequency response of each output shall be within the range of 0 dB +1/ -2.5 dB compared to the 1kHz (0dB). The 20Hz level when the GAIN volume is Max shall be within the range of 0

48、 dB +1.0/ -4.5 dB compared to the 1kHz (0dB). In the route q, check every OUT when the signal is fed to CH1, and check only the ST L OUT when the signal is fed to CH2 and other channels. In the route r, check only the ST L OUT and the ST R OUT. 4.4 HPF In the state of the Table 4.2.1 and 4.2.2, feeding 80 Hz -36dBu signal, and setting the GAIN to MIN, the STEREO L OUT level obtained when the 80 switch is set to ON shall be within the range of -3 dB +2/ -2 dB compare

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