Yamaha-MW-12-Service-Manual电路原理图.pdf

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1、SERVICE MANUAL HAMAMATSU, JAPAN Copyright (c) Yamaha Corporation. All rights reserved. PDF 06.02 PA011815 CONTENTS（目目目目目次次次次次） SPECIFICATIONS（総合仕様） . 3/5 DIMENSIONS（寸法図） . 7 PANEL LAYOUT（）. 8 CIRCUIT BOARD LAYOUT（） . 12 RACK MOUNTING（） . 12 WIRING（結線図） . 13 DISASSEMBLY PROCEDURE（分解手順）. 14 LSI PIN DE

2、SCRIPTION（LSI 端子機能表） . 18 IC BLOCK DIAGRAM （IC図） . 18 CIRCUIT BOARDS（基板図）. 19 INSPECTIONS（検査） . 27/38 BLOCK DIAGRAM equivalent to a 20 kHz filter with infinite dB/octave attenuation. Maximum Voltage Gain (1 kHz) PAN/BAL: panned hard left or hard right. Crosstalk (1 kHz) Conditions (THD+N) 20 Hz-20 k

3、Hz +14 dBu 600 ohms, GAIN controls at minimum level, all faders at nominal level 20 Hz-20 kHz, nominal output level1kHz, 600 ohms (ST OUT), 10 k ohms (GROUP OUT, AUX SEND, C-R OUT, REC OUT), GAIN controls at minimum level (CH INPUT 1-7/8), all faders at nominal level Equivalent Input Noise (CH INPUT

4、 1-4 MIC) Residual Output Noise 600 ohms (ST OUT) ST, GROUP master faders at nominal level and all channel GROUP switches and ST switches are off. (ST, GROUP OUT) AUX master control at nominal level and all channel mix controls at minimum level. (AUX SEND) ST, GROUP master faders and one channel fad

5、er at nominal level. (ST, GROUP OUT) CH INPUT 1-4 MIC to CH INSERT OUT (10 k ohms), Rs=150 ohms, GAIN controls at maximum level CH INPUT 1-7/8 MIC to ST OUT (600 ohms), GROUP OUT (10 k ohms), Rs=150 ohms, GAIN controls at maximum level CH INPUT 1-7/8 MIC to ST OUT (600 ohms), GROUP to ST, Rs=150 ohm

6、s, GAIN controls at maximum level CH INPUT 1-7/8 MIC to REC OUT (10 k ohms), Rs=150 ohms, GAIN controls at maximum level CH INPUT 1-4 MIC to AUX SEND (10 k ohms), Rs=150 ohms, GAIN controls at maximum level, PRE CH INPUT 1-4 MIC to AUX SEND (10 k ohms), Rs=150 ohms, GAIN controls at maximum level, P

7、OST CH INPUT 5/6-7/8 LINE to ST OUT (600 ohms), GROUP OUT (10 k ohms), Rs=150 ohms, GAIN controls at maximum level CH INPUT 5/6-7/8 LINE to AUX SEND (10 k ohms), Rs=150 ohms, GAIN controls at maximum level, PRE CH INPUT 5/6-7/8 LINE to AUX SEND (10 k ohms), Rs=150 ohms, GAIN controls at maximum leve

8、l, POST CH INPUT 9/10-11/12 to ST OUT (600 ohms), GROUP OUT (10 k ohms), Rs=150 ohms, GAIN controls at maximum level RETURN to ST OUT (600 ohms), Rs=150 ohms RETURN to AUX SEND(10 k ohms), Rs=150 ohms 2TR IN to ST OUT (600 ohms), Rs=600 ohms Adjacent inputs input to output MIN 3 TYP 0 60 84 94 62.2

9、76 86 58 47 57 34 16 9 27.8 MAX 0.1 1 128 100 88 (92 dB S/N) 81 (85 dB S/N) 64 (68 dB S/N) -70 -70 UNIT % dB dBu dBu dBu dBu dBu dB dB dB dB dB dB dB dB dB dB dB dB dB dB dB Electrical Characteristics Where 0 dBu=0.775Vms Output Impedancce of signal generator: 150 ohms Monaural/Stereo CH High Pass F

10、ilter Monaural/Stereo CH Equalization Turn over/roll-off frequency of shelving, 3 dB below maximum variable level Phantom Power Monaural/Stereo Input PEAK Indicator USB Audio Included Accessories Power Consumption Dimensions (W X H X D) Net Weight Temperature Range 80 Hz 12 dB/octave 15 dB (Max. Var

11、iation) HIGH: 10 kHz (shelving) MID: 2.5 kHz (peaking) LOW: 100 Hz (shelving) Supplied when Phantom +48 V switch is ON. (XLR-type input jacks) On each channel: red indicator lights if post-EQ signal (on ST channels, if either post-EQ signal or post-mic-amp signal) comes within 3 dB of the clipping l

12、evel. Input/Output: 44.1/48 kHz Power adaptor (PA-20), CD-ROM, USB cable 29 W 322 mm X 108 mm X 416.6 mm 5 kg Operating temperature: 0 to 40 C, Storage temperature: -20 to 60 C General Specifications 4 MW12 Analog Output Specifications Where 0 dBu=0.775 Vrms and 0 dBV=1 Vrms Output Connectors ST OUT

13、 (L, R) GROUP OUT (1-2) AUX SEND (1, 2) CH INSERT OUT (CHs 1 to 4) REC OUT (L, R) C-R OUT (L, R) PHONES Output Impedance 75 ohms 150 ohms 150 ohms 600 ohms 150 ohms 100 ohms Appropriate Impedance 600 ohms line 10 k ohms line 10 k ohms line 10 k ohms line 10 k ohms line 40 ohms phone Nominal Level +4

14、 dBu (1.23 V) +4 dBu (1.23 V) 0 dBu (0.775 V) 10 dBV (316 mV) +4 dBu (1.23 V) 3 mW Max. Before Clipping +24 dBu (12.3 V) +20 dBu (7.75 V) +20 dBu (7.75 V) +10 dBV (3.16 V) +20 dBu (7.75 V) 75 mW Connector Specifications XLR-3-32 type (balanced) Phone jack (TRS) (balanced T: hot; R: cold; S: ground)

15、Phone jack (TRS) (impedance balanced T: hot; R: cold; S: ground) Phone jack (TRS) (unbalanced T: out; R: in; S: ground) RCA pin jack Phone jack (TRS) (impedance balanced T: hot; R: cold; S: ground) Stereo phone jack Digital Input/Output Specifications Connector USB Format USB Audio 1.1 Data Length 1

16、6 bit Connector Specification USB B type Analog Input Specifications Where 0 dBu=0.775 Vrms and 0 dBV=1 Vrms * Input sensitivity: the lowest level that will produce an output of +4 dBu (1.23V) or the nominal output level when the unit is set to maximum gain. (All faders and level controls are maximu

17、m position.) Input Connectors MIC INPUT (CHs 1 to 4) LINE INPUT (CHs 1 to 4) ST CH MIC INPUT (CH5(L)/CH6(R), CH7(L)/CH8(R) ST CH LINE INPUT (CH5(L)/CH6(R), CH7(L)/CH8(R) ST CH INPUT (CH9(L)/CH10(R), CH11(L)/CH12(R) CH INSERT IN (CHs 1 to 4) RETURN (L, R) 2TR IN (L, R) Gain 60 16 34 +10 60 16 34 +10

18、Input Impedance 3 k ohms 10 k ohms 3 k ohms 10 k ohms 10 k ohms 10 k ohms 10 k ohms 10 k ohms Appropriate Impedance 50 600 ohms mic 600 ohms line 50 600 ohms mic 600 ohms line 600 ohms line 600 ohms line 600 ohms line 600 ohms line Sensitivity* 80 dBu (0.078 mV) 36 dBu (12.3 mV) 54 dBu (1.55 mV) 10

19、dBu (245 mV) 80 dBu (0.078 mV) 36 dBu (12.3 mV) 54 dBu (1.55 mV) 10 dBu (245 mV) 30 dBu (24.5 mV) 20 dBu (77.5 mV) 12 dBu (195 mV) 26 dBV (50.1 mV) Nominal Level 60 dBu (0.775 mV) 16 dBu (123 mV) 34 dBu (15.5 mV) +10 dBu (2.45 V) 60 dBu (0.775 mV) 16 dBu (123 mV) 34 dBu (15.5 mV) +10 dBu (2.45 V) 10

20、 dBu (245 mV) 0 dBu (0.775 V) +4 dBu (1.23 V) 10 dBV (316 mV) Max. Before Clipping 40 dBu (7.75 mV) +4 dBu (1.23 V) 14 dBu (155 mV) +30 dBu (24.5 V) 40 dBu (7.75 mV) 10 dBu (245 mV) 14 dBu (155 mV) +30 dBu (24.5 V) +10 dBu (2.45 V) +20 dBu (7.75 V) +24 dBu (12.3 V) +10 dBV (3.16 V) Connector Specifi

21、cations XLR-3-31 type (balanced) Phone jack (TRS) (balanced T: hot; R: cold; S: ground) XLR-3-31 type (balanced) Phone jack (unbalanced) Phone jack (unbalanced); RCA pin jack Phone jack (TRS) (unbalanced T: out; R: in; S: ground) Phone jack (unbalanced) RCA pin jack 5 MW12 総合仕様全高調波歪率 (MIC ST OUT) 周

22、波数特性 (CH INPUT 1 11/12 ST OUT、GROUP OUT、AUX SEND、C-R OUT、REC OUT) & Rs=150 ohms、 Gain= 最大、12.7 kHz、 -6 dB/octave 測定(20 kHz、- dB/octave 相当) 最大電圧(1 kHz) PAN/BAL：左右回切 (1 kHz) 条件 (THD+N) 20 Hz 20 kHz +14 dBu 600 ohms、 GAIN = 最小、= 20 Hz 20 kHz、出力1kHz、600 ohms (ST OUT)、 10 k ohms (GROUP OUT、AUX SEND、C-R O

23、UT、REC OUT)、 GAIN = 最小(CH INPUT 1 7/8)、 = 入力換算(CH INPUT 1 4 MIC) 残留600 ohms (ST OUT) ST, GROUP 全Group 、ST =OFF (ST. GROUP OUT) AUX = 全= 最小(AUX SEND) ST, GROUP &1 = (ST. GROUP OUT) CH INPUT 1 4 MIC CH INSERT OUT (10 k ohms)、Rs=150 ohms、GAIN = 最大 CH INPUT 1 7/8 MIC ST OUT (600 ohms)、GROUP OUT (10 k oh

24、ms)、Rs=150 ohms、GAIN = 最大 CH INPUT 1 7/8 MIC ST OUT (600 ohms)、GROUP to ST、 Rs=150 ohms、GAIN = 最大 CH INPUT 1 7/8 MIC REC OUT (10 k ohms)、Rs=150 ohms、 GAIN = 最大 CH INPUT 1 4 MIC AUX SEND (10 k ohms)、Rs=150 ohms、 GAIN = 最大、PRE CH INPUT 1 4 MIC AUX SEND (10 k ohms)、Rs=150 ohms、 GAIN = 最大、POST CH INPUT

25、5/6 7/8 LINE ST OUT (600 ohms)、GROUP OUT (10 k ohms)、Rs=150 ohms、GAIN = 最大 CH INPUT 5/6 7/8 LINE AUX SEND (10 k ohms)、Rs=150 ohms、GAIN = 最大、PRE CH INPUT 5/6 7/8 LINE AUX SEND (10 k ohms)、Rs=150 ohms、GAIN = 最大、POST CH INPUT 9/10 11/12 ST OUT (600 ohms)、GROUP OUT(10 k ohms)、Rs=150 ohms、GAIN = 最大 RETUR

26、N ST OUT (600 ohms)、Rs=150 ohms RETURN AUX SEND(10 k ohms)、Rs=150 ohms 2TR IN ST OUT (600 ohms)、Rs=600 ohms 入力間入出力間最小 -3.0 標準 0 60 84 94 62.2 76 86 58 47 57 34 16 9 27.8 最大 0.1 1.0 -128 -100 -88 （92 dB S/N) -81 （85 dB S/N) -64 （68 dB S/N) -70 -70 単位 dB dBu dBu dBu dBu dBu dB dB dB dB dB dB dB dB d

27、B dB dB dB dB dB dB 電気的特性 0 dBu = 0.775 Vrms 出力150 ohms 、、 / 周波数：最大可変幅対3 dB 下電源 / PEAK USB 付属品消費電力最大外形寸法（W H D）質量温度 80 Hz 12 dB/octave 15 dB ( 最大可変幅) HIGH：10 kHz ( ) MID：2.5 kHz ( ) LOW：100 Hz ( ) PHANTOM DC+48 V 供給(XLR 入力端子) 各：後（、後MIC 後）信号、手前3 dB 達赤点灯入出力44.1/48kHz 電源(PA-20)、CD-ROM、USB 29 W

28、 322 mm 108 mm 416.6 mm 5 kg 動作温度: 0 40 、保管温度: -20 60 一般仕様 6 MW12 出力仕様 0 dBu=0.775 Vrms、0 dBV=1 Vrms 出力端子名称 ST OUT (L、R) GROUP OUT (1-2) AUX SEND (1-2) CH INSERT OUT (CH1 4) REC OUT (L、R) C-R OUT (L、R) PHONES 出力 75 ohms 150 ohms 150 ohms 600 ohms 150 ohms 100 ohms 適合 600 ohms 10 k ohms 10 k ohms 10

29、k ohms 10 k ohms 40 ohms +4 dBu（1.23 V） +4 dBu（1.23 V） 0 dBu（0.775 V） -10 dBV（316 mV） +4 dBu（1.23 V） 3 mW 最大 +24 dBu（12.3 V） +20 dBu（7.75 V） +20 dBu（7.75 V） +10 dBV（3.16 V） +20 dBu（7.75 V） 75 mW 端子仕様 XLR-3-32（型）（TRS）（型T：、 R：、S：）（TRS）（型 T：、R：、 S：）（TRS）（型T：、 R：、S：） RCA （TRS）（型 T：、R：、 S：）入出力仕様

30、端子名称 USB USB 1.1 長 16 bit 端子仕様 USB B 入力仕様 0 dBu=0.775 Vrms、0 dBV=1 Vrms *1 入力感度：最大位置、+4 dBu (1.23V) 出力得最小入力入力端子名称 MIC INPUT (CH1 4） LINE INPUT (CH1 4) ST CH MIC INPUT (CH5(L)/CH6(R)、 CH7(L)/CH8(R) ST CH LINE INPUT (CH5(L)/CH6(R)、 CH7(L)/CH8(R) ST CH INPUT (CH9(L)/CH10(R)、 CH11(L)/CH12(R) CH INSERT

31、IN (CH1 4) RETURN (L、R) 2TR IN (L、R) -60 -16 -34 +10 -60 -16 -34 +10 入力 3 k ohms 10 k ohms 3 k ohms 10 k ohms 10 k ohms 10 k ohms 10 k ohms 10 k ohms 適合 50 600 ohms 600 ohms 50 600 ohms 600 ohms 600 ohms 600 ohms 600 ohms 600 ohms 感度*1 -80 dBu （0.078 mV） -36 dBu （12.3 mV） -54 dBu （1.55 mV） -10 dBu （

32、245 mV） -80 dBu （0.078 mV） -36 dBu （12.3 mV） -54 dBu （1.55 mV） -10 dBu （245 mV） -30 dBu （24.5 mV） -20 dBu （77.5 mV） -12 dBu （195 mV） -26 dBV （50.1 mV） -60 dBu （0.775 mV） -16 dBu （123 mV） -34 dBu （15.5 mV） +10 dBu （2.45 V） -60 dBu （0.775 mV） -16 dBu （123 mV） -34 dBu （15.5 mV） +10 dBu （2.45 V） -10 dBu

33、（245 mV） 0dBu 0.775 V） +4 dBu （1.23 V） -10 dBV （316 mV）最大 -40 dBu （7.75 mV） +4 dBu （1.23 V） -14 dBu （155 mV） +30 dBu （24.5 V） -40 dBu （7.75 mV） -10 dBu （245 mV） -14 dBu （155 mV） +30 dBu （24.5 V） +10 dBu （2.45 V） +20 dBu （7.75 V） +24 dBu （12.3 V） +10 dBV （3.16 V）端子仕様 XLR-3-31 （型）（TRS）（型T：、 R：、 S

34、：） XLR-3-31 （型）（型）（型）、RCA （TRS）（型 T：、R：、S：）（型） RCA 7 MW12 DIMENSIONS（寸法図） 317.4 102.62 108 322 480 322 When mounted on rack *Refer to page 12 for the method of rack mounting. 325.6 416.6 （取付時）（取付方法12参照下。） Unit: mm （単位: mm） 8 MW12 PANEL LAYOUT（） Channel Control Section（部） qGAIN Control wPEAK In

35、dicator e Switch (High Pass Filter) rEqualizer (HIGH, MID, and LOW) tAUX1 and AUX2 Controls yPRE Switch uPAN Control (1 to 4) PAN/BAL Control (5/6 and 7/8) BAL Control (9/10 and 11/12) iST Switch oPFL (Pre-Fader Listen) Switch !0GROUP Switch !1Channel Fader qGAIN wPEAK e （） r（ HIGH 、 MID 、 LOW ） tAU

36、X1 、 AUX2 yPRE uPAN（CH 1 4） PAN/BAL（CH 5/6、7/8） BAL（CH 9/10、11/12） iST oPFL !0GROUP !1 Channels 1 to 4 (Monaural) Channels 5 /6, 7/8 (Stereo) Channels 9/10,11/12 (Stereo) q w wee r ttt yyy u i o !0!0!0 !1!1!1 u i o u i o 9 MW12 Master Control Section（部） !3 u y t e !2 !1 r o i wq !0 qST Master Fader

37、wGROUP 1-2 Fader eTO ST Switch rMaster SEND Master AUX 1/2 Control tRETURN AUX 1/2 Control ST Control y2TR IN/USB Control uPHANTOM +48V Switch i2TR IN/USB Switch (TO ST / TO C-R) oST/GROUP Switch !0C-R/PHONES Control !1Level Meter !2POWER Indicator !3PHONES Jack qST wGROUP 1-2 eTO ST rSEND AUX1/2 tR

38、ETURN AUX1/2 ST y2TR IN/USB uPHANTOM +48V i2TR IN/USB（ TO ST/TO C-R ） oST/GROUP !0CR/PHONES !1 !2POWER !3PHONES端子 10 MW12 Rear Input/Output Section（入出力部） qChannel Input Jacks MIC jacks (CHs 1 to 4, 5/6, 7/8) LINE jacks (CHs 1 to 4) wINSERT I/O Jacks eChannel Input Jacks (CHs 5/6 to 11/12) phone type

39、 (CHs 5/6 to 11/12) RCA pin type (CHs 9/10, 11/12) rGROUP OUT (1,2) Jacks tST OUT (L, R) Jacks yC-R OUT (L, R) Jacks uSEND Jacks AUX1 and AUX2 jacks iRETURN L (MONO), R Jacks oREC OUT (L, R) Jacks !02TR IN Jacks !1USB Connector !2POWER Switch !3AC ADAPTOR IN Connector qINPUT端子 MIC （CH 1 4、5/6、7/8） L

40、INE （CH 14） wINSERT I/O端子 eINPUT端子（CH5/611/12） RCA （CH9/1011/12） rGROUP OUT （1、2）端子 tST OUT （L、R）端子 yC-R OUT （L、R）端子 uSEND端子 AUX1 、 AUX2端子 iRETURN L（MONO）、 R端子 oREC OUT （L、R）端子 !02TR IN端子 !1USB端子 !2電源 !3AC ADAPTOR IN端子 q we!0oiuy!2 !1rt!3 11 MW12 Connector Polarities MIC INPUT, ST OUT Pin 1: Groun

41、d Pin 2: Hot (+) Pin 3: Cold (-) LINE INPUT (monaural channels), GROUP OUT, ST OUT, C-R OUT AUX1, AUX2 * Tip: Hot (+) Ring: Cold (-) Sleeve: Ground Tip: Output Ring: Input Sleeve: Ground PHONES Tip: L Ring: R Sleeve: Ground RETURN, LINE INPUT (stereo channels) Tip: Hot Sleeve: Ground INPUTOUTPUT Sle

42、eveTip Ring SleeveTip * These jacks will also accept connection to monaural phone plugs. If you use monaural plugs, the connection will be unbalanced. MIC INPUTINSERTININIININSERT I/OINSERT I/O SleeveTip 端子、端子使用。場合、。 MIC INPUT、ST OUT ：： (+) ： (-) LINE INPUT（）、 GROUP OUT、ST OUT、C-R OUT AUX1, AUX2 ：

43、(+) ： (-) ： INSERT I/O ：Output ：Input ： PHONES ：L ：R ： RETURN、 LINE INPUT（）：： INPUTOUTPUT 端子接続極性 12 MW12 CIRCUIT BOARD LAYOUT（） (1/2) JACK MAINMAIN PS (1/2) JACK (2/2) JACK USB RACK MOUNTING（） Mounting the MW12（方法） 1. Two metal rack-mount supports are screwed onto the unit. Use a screwdriver to re

44、move these supports. （本体取付金具、外。）（金具反転、1外本体固定。） 2. Turn the supports over, and fasten them into place again using the same screws. （、固定。）熱発機器近MW12設置。 3. Mount the unit into the rack, and fasten it into place. Do not install the mixer near power amps or other heat-generating devices. 13 MW12 WIRIN

45、G（結線図） 1. AC Wire and 3-Pin Connector wiring （AC3接続） 3. Connect AC Wire(Loc. 125) with PCB Assy PS(Loc. 330) according to the figure below. （下図従、AC束線(Loc. 125) PS(Loc. 330) 接続。） Jumper wire bendng in the dimensing of figure. （図寸法曲。） 4. Connect Wiring Assy PS(Loc. 160) with CN02 of Circuit Board PS(L

46、oc. 330). （束線 PS(Loc. 160) PS(Loc. 330)CN02接続。） 5 Connect the Wiring Assy USB12 with CN101 of PCB Assy USB. （束線 USB12CN101接続。） a) Pass the head of AC WIRE through the circle of Wire RE and BR. （線材赤、茶輪中 AC束線先端通。） * Note it in the direction of the heat of AC WIRE. （AC束線先端向注意。） b) Draw out AC WIRE. （AC

47、束線引出。） c) Connect AC WIRE with CN01 of Circuit Board PS. （PSCN01接続。） 2. Before attaching PCB Assy MAIN & JACK to Panel, insert wiring assy to each connector. （MAINJACK取付前束線差込。） (WE735800) (WC703300) X 7 JACK - MAIN CN571 - CN501 CN771 - CN701 CN971 - CN901 CNA71 - CNA01 CND71 - CND01 CNE71 - CNE01 CNG71 - CNG01 CNF01 PCB Assy USB filament tape Pass the cutting part of PCB Assy MAIN. （MAIN切欠部通。） CNH02 WG336200 WC711600 PHONES (JACK 2/2) Wiring Assy USB12 Brown （） 15 1mm 1501mm to PCB Assy JACK （JACK） to PCB Assy MAIN （MAIN） Loc,