Yamaha MG12/4FX Service Manual

Other manuals for MG12/4FX: Owner's Manual

Summary of MG12/4FX

  • Page 1

    1 mg12/4fx service manual pa 011768 200501-38850 copyright (c) yamaha corporation. All rights reserved. Pdf-k ’05.02 hamamatsu, japan contents specifications ................................................ 3/5 dimensions ............................................................ 7 panel layout .....

  • Page 2: Warning

    Mg12/4fx 2 impor tant notice this 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 specifically yamaha products, are already known and under- stood by the users, and h...

  • Page 3: Specifications

    3 mg12/4fx specifications ■ electrical characteristics 0.1 % db -128 dbu -100 dbu -88 (92 db s/n) dbu -81 (85 db s/n) dbu -64 (68 db s/n) dbu 60 db 84 db 94 db 62.2 db 76 86 db db 58 db 84 db 58 db 47 db 57 db 34 db 16 db 9 db 27.8 db db db -70 -70 44 db conditions min typ max unit total harmonic di...

  • Page 4

    Mg12/4fx 4 -60 3kΩ 3kΩ 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) phone jack (unbalanced); rca pin jack phone jack (trs) (unbalanced [t: out; r: in; s: ground]) rca pin jack -16 -34 +10 -6...

  • Page 5: 総合仕様

    5 mg12/4fx 総合仕様 ■ 電気的特性 ■ 一般仕様 条件 最小 標準 最大 単位 0.1 % 可変幅 レベルメーター 付属品 電源アダプター(pa-20) オプション フットスイッチ(fc5) 消費電力 36w 質量 5kg 全高調波歪率(mic →st out) 周波数特性(mic →st out) ハム&ノイズ(20 hz 〜 20 khz) rs=150 ohms 、gain=最大レベル、 感度=-60 dbu 、@12.7 khz 、 -6 db/octave のローパスフィルター で測定(@20 khz 、-∞db/octave フィルターに相当) 最大電圧ゲイン pan/...

  • Page 6

    Mg12/4fx 6 ■ 入力仕様 ■ 出力仕様 *0dbu=0.775 v 、0 dbv=1 v とする *1 入力感度:最大ゲイン測定時に定格出力が得られる最小レベル *0dbu=0.775 v 、0 dbv=1 v とする 入力端子名称 ゲイン 入力イン ピーダンス 適合インピーダンス 感度 *1 ノミナルレベル 最大ノンク リップレベル 端子仕様 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)、 ch...

  • Page 7: Dimensions

    7 mg12/4fx dimensions units: mm (単位) (寸法図) 317.4 416.6 325.6 102.6 2 108 322 480 322 【ラック取り付け時】 www. Xiaoyu163. Com qq 376315150 9 9 2 8 9 4 2 9 8 tel 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 q q tel 13942296513 qq 376315150 892498299 tel 13942296513 qq 376315150 892498299 http://www.Xiaoyu16...

  • Page 8: Panel Layout

    Mg12/4fx 8 panel layout q w e r t y u i o !0 !1 !2 gain control peak indicator 80 switch (high pass filter) equalizer (high, mid, and low) aux control pre switch effect controls pan control (1 to 4) pan/bal control (5/6 and 7/8) bal control (9/10 and 11/12) st switch pfl (pre-fader listen) switch gr...

  • Page 9

    9 mg12/4fx st master fader group 1-2 fader to st switch master send return 2tr in control phantom +48v switch level-meter signal switches (st-group toggle switch and 2tr in switch) c-r/phones control level meter power indicator phones jack digital effect st マスターフェーダー group 1-2 フェーダー to st スイッチ send ...

  • Page 10

    Mg12/4fx 10 channel input jacks insert i/o jacks channel input jacks group out (1, 2) jacks st out (l, r) jacks c-r out jacks send jacks return l (mono), r jacks rec out (l, r) jacks 2tr in jacks foot switch jack power switch ac adaptor in connector チャンネル input 端子 insert i/o 端子 チャンネル input 端子 group ...

  • Page 11

    11 mg12/4fx connector polarities * these jacks will also accept connection to monaural phone plugs. If you use monaural plugs, the connection will be unbalanced. Mic input, st out pin 1: ground pin 2: hot (+) pin 3: cold (-) line input (monaural channels), group out, st out, c-r out aux, effect * ti...

  • Page 12: Circuit Board Layout

    Mg12/4fx 12 circuit board layout (ユニットレイアウト) jack jack main(1/2) main(2/2) main(2/2) ps dsp dsp www. Xiaoyu163. Com qq 376315150 9 9 2 8 9 4 2 9 8 tel 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 q q tel 13942296513 qq 376315150 892498299 tel 13942296513 qq 376315150 892498299 http://www.Xiaoyu16...

  • Page 13: Wiring

    13 mg12/4fx to circuit board jack to circuit board main wc703300 10±1mm 15±1mm ジャック基板へ メイン基板へ 1. Jumper wire bending in the dimension of figure. ジャンパーワイヤーを図の寸法に曲げます。 2.Before attaching circuit board main & jack to panel, insert wiring ass'y to each connector. Mainとjackシートをパネルに取り付ける前に束線をコネクタへ差し込みます。 ...

  • Page 14: Disassembly Procedure

    Mg12/4fx 14 disassembly procedure [420]: bind head screw 4.0x8 mfzn2bl (eg340360) 1. ラックアングル (所要時間:各約 1 分) 1-1 [420]のネジ2本を外し、ラックアングルlを外しま す。 (写真 1) 1-2 [440]のネジ 2 本を外し、ラックアングル r を外し ます。 (写真 2) 2. ボトムカバー (所要時間:約 2 分) 2-1 [390a]のネジ8本と[400]のネジ 2本を外し、ボトム カバーを外します。 (写真 3) [390]: bind head tapping screw-s...

  • Page 15

    15 mg12/4fx 3. サイドカバー、シート ps (所要時間:各約 6 分) 3-1 ボトムカバーを外します。 (2 項参照) 3-2 サイドカバー l: 3-2-1 ラックアングル l を外します。 (1 項参照) 3-2-2 [250a]の六角穴付きネジ 2 本、[260a]のネジ 2 本、 [220]のネジ3本と[390b]のネジ1 本を外し、サイド カバー l を外します。 (写真 3、4、5) 3-3 サイドカバー r、シート ps: 3-3-1 ラックアングル r を外します。 (1 項参照) 3-3-2 [250b]の六角穴付きネジ 2 本、[260b]のネジ 2 本、 ...

  • Page 16

    Mg12/4fx 16 heat sink [b] [a] [a] (ヒートシンク) ps ic01 ic02 ic03 ic04 ic05 q01 ic01 ic02 ic03 ic04 ic05 q01 fig.2 4. シート dsp、シールド dsp12 (所要時間:約 7 分) 4-1 ボトムカバーを外します。 (2 項参照) 4-2 サイドカバーr、シートpsを外します。 (3-3項参照) 4-3 [326]のネジ 2 本を外し、カバー dsp を外します。 (図 3) 4-4 [320]のネジ 4 本を外し、シールド dsp12 からシー ト dsp を外します。 (写真 9) ...

  • Page 17

    17 mg12/4fx 6. シート jack、シート main(1/2、2/2) (所要時間:約 13 分) 6-1 ボトムカバーを外します。 (2 項参照) 6-2 サイドカバー、シート ps を外します。 (3-3 項参照) 6-3 [270]のネジ 18 本と[a]の六角ナットと平ワッシャ 各 27 個を外します。 (写真 11) 6-4 ノブ(fader) 11 個とノブ(program)を外しま す。 (写真 12) 6-5 [200]の六角穴付き s タイト 2 本を外し、シート jack、シート main(1/2、2/2)を外します。 (写真 12) 6-6 シート jack ...

  • Page 18

    Mg12/4fx 18 connector(コネクタ) jack [c] [c] [40] photo.14 (写真14) photo.13 (写真13) [60] support mix2 (サポートmix2) hooks(フック) main1/2 [270] [270] [270] [270] [a] [a] [a] [a] [a] knob(fader) (ノブ(フェーダー)) knob(program) (ノブ(program)) [200] photo.12 (写真12) photo.11 (写真11) [270]: bonding tapping screw-b 3.0x10 mf...

  • Page 19: Lsi Pin Description

    19 mg12/4fx lsi pin description (lsi 端子機能表) pin pin no. Name i/o function no. Name i/o function 1 vss - vss 65 vss - vss 2 testn i input for test 66 iovdd - iovdd +3.3v 3 pllbpn i pll bypass select 67 lbn/lwrn/pf6 o external memory lower-byte enable 4 pllvdd - pllvdd +2.5v 68 ubn/uwrn/pf7 o external...

  • Page 20: Ic Block Diagram

    Mg12/4fx 20 ic block diagram (ic ブロック図) (x5219a00) ak5381vt-e2 dsp: icm04 a/d converter pcm1742keg/2k (x3538a00) dsp: icm08 digital to analog converter 1 2 3 4 5 6 7 16 15 14 13 12 11 sck ml mc md zerol/na zeror/zeroa v com 8 9 10 agnd bck data lrck dgnd v dd v cc v out l v out r pin no. Pin name 1 ...

  • Page 21

    21 mg12/4fx njm4580m-d (te2) (x5025a00) jack: icg06, 07 main(1/2) : ic501,601,701,801,901,a01,e02,f02 dual operational amplifier njm2068md-te2 (x3505a00) dsp: icm09, icm11 main(1/2) : ic103, 502,503,702,703,902-904,a02-a04, b01-b03,c01-c03,d01-d03,e01,e03,f01, g01-g05 njm4556al (xp844a00) main(1/2) ...

  • Page 22: Circuit Boards

    Mg12/4fx 22 dsp circuit board circuit boards note: see parts list for details of circuit board component parts. Dsp circuit board (x5022c0) ....................................................... 22 ps circuit board (x5235b0) .......................................................... 23 jack circuit...

  • Page 23

    Mg12/4fx 23 ps circuit board scale : 90/100 to main(1/2)-cn102 to main(1/2)-cnf01 to sw01 pattern side component side (部品側) (パターン側) www. Xiaoyu163. Com qq 376315150 9 9 2 8 9 4 2 9 8 tel 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 q q tel 13942296513 qq 376315150 892498299 tel 13942296513 qq 376...

  • Page 24

    Mg12/4fx 24 jack circuit board a' a to main(1/2)-cn501 to main(1/2)-cn501 to main(1/2)-cn701 to main(1/2)-cn701 to main(1/2)-cn901 to main(1/2)-cn901 to main(1/2)-cna01 to main(1/2)-cna01 a' a to main(1/2)-cn501 to main(1/2)-cn501 to main(1/2)-cn701 to main(1/2)-cn701 to main(1/2)-cn901 to main(1/2)...

  • Page 25

    Mg12/4fx 25 component side (部品側) scale : 100/100 a' a /2)-cn901 /2)-cn901 to main(1/2)-cna01 to main(1/2)-cna01 to main(1/2)-cnd01 to main(1/2)-cnd01 to main(1/2)-cne01 to main(1/2)-cne01 to main(1/2)-cng01 to main(1/2)-cng01 a' a /2)-cn901 /2)-cn901 to main(1/2)-cna01 to main(1/2)-cna01 to main(1/2...

  • Page 26

    Mg12/4fx 26 a' b' b www. Xiaoyu163. Com qq 376315150 9 9 2 8 9 4 2 9 8 tel 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 q q tel 13942296513 qq 376315150 892498299 tel 13942296513 qq 376315150 892498299 http://www.Xiaoyu163.Com http://www.Xiaoyu163.Com.

  • Page 27

    Mg12/4fx 27 scale : 100/100 pattern side a' b' b (パターン側) www. Xiaoyu163. Com qq 376315150 9 9 2 8 9 4 2 9 8 tel 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 q q tel 13942296513 qq 376315150 892498299 tel 13942296513 qq 376315150 892498299 http://www.Xiaoyu163.Com http://www.Xiaoyu163.Com.

  • Page 28

    Mg12/4fx 28 main circuit board scale : 50/100 component side to ps-cn03 to jack-cn571 to jack-cn771 to jack-cn971 to jack-cna71 to jack-cnd71 to jack-cne71 to jack-cng71 to ps-cn02 b バージョン:c バージョンに比べて若干パターンのみ異なります。 b version: compared to c version, only some patterns are different. (部品側) www. Xiaoyu...

  • Page 29

    Mg12/4fx 29 pattern side to dsp-cnm02 (パターン側) www. Xiaoyu163. Com qq 376315150 9 9 2 8 9 4 2 9 8 tel 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 q q tel 13942296513 qq 376315150 892498299 tel 13942296513 qq 376315150 892498299 http://www.Xiaoyu163.Com http://www.Xiaoyu163.Com.

  • Page 30: Inspections

    Mg12/4fx 30 inspections 1. Scope this inspection specification is applied to the mixer mg12/4fx. 2. Power source the voltage is within ± 10%. Ac adaptor shall be used. 3.1 preparation unless otherwise stated, the input signal should be sine wave at 1 khz. The signal source impedance should be 150 Ω ...

  • Page 31

    31 mg12/4fx aux pre switch : off (post) effect level control : max bal control : l on switch : on (led shall light) when taking measurement only/ off otherwise pfl switch : on (led shall light) when taking measurement only/ off otherwise 1-2 switch : on when taking measurement only/ off otherwise fa...

  • Page 32

    Mg12/4fx 32 3.4 frequency characteristics in the signal routes of the table 3.3-1 to 3.3-6 indicated with q to !0 , 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...

  • Page 33

    33 mg12/4fx 3.7 crosstalk setting the fader to the nominal position and each input channel on switch to on, and turning the pan control shall be -50dbu or (bal control in the case of st ch input) counterclockwise fully, the level of the leakage to st r out less when the output level of st out is +20...

  • Page 34

    Mg12/4fx 34 3.13 residual noise in the state 3.1, set the all fader and level control of all input ch to min and set the all assign switch to off. Then, the noise level shall be less than the level specified in the table 3.13-1. * in measuring the c-r out and the phones, set the st fader to min. * s...

  • Page 35: 検査

    35 mg12/4fx 検査 1. 適用範囲 ミキサー mg12/4fx について規定します。 2. 電源電圧 仕向地電源電圧の± 10% 以内 ac アダプターを使用します。 3.1 準備 *特に指定の無い限り、入力信号は 1khz の正弦波を使用します。また、信号源インピーダンスは 150 Ωとします。 *各出力端子の負荷抵抗は下記の通りです。 ・phones(l,r) :40 Ω ・st out :600 Ω ・その他出力 :10k Ω 特に指定の無い場合、ツマミ類は以下のように設定してください。 •ch input gain control : max(-60dbu) 80 switc...

  • Page 36

    Mg12/4fx 36 •st ch (9/10, 11/12) hi, mid, lo eq gain control : center aux level control : max aux pre switch : off (post) effect level control : max bal control : l on switch : 測定時のみ on(led 点灯)/それ以外は off pfl switch : 測定時のみ on(led 点灯)/それ以外は off 1-2 switch : 測定時のみ on /それ以外は off fader : max • digital e...

  • Page 37

    37 mg12/4fx 3.4 周波数特性 表 3.3-1〜 6 のq〜 !0 のついた系統において、印加信号周波数を 20hz,20khz とした時、各出力端子の出力レベルは 1khz を基準として、+1.0db,-2.5db の範囲内にあることを確認します。 ただし gain vr max の時の 20hz のみ +1.0db、-4.5db とします。 ※ q の系統は、ch1 のみ全部の out で確認し、ch2 以降は st l out のみの確認で代用できます。 ※ r の系統は、st l out, st r out のみ確認します。 3.5 hpf 表 3.3-1、表 3.3-2 ...

  • Page 38

    Mg12/4fx 38 3.7 チャンネルセパレーション fader は nominal position(0 位置)にし、input の各チャンネルで on スイッチを on し、pan control (st ch input では bal control) を反時計方向にまわしきり、st l out の出力レベルを +20dbu とした時、st r out への漏れレベ ルは -50dbu 以下であることを確認します。 また、pan control を時計方向にまわしきり、st r out の出力レベルを +20dbu とした時、st l out への漏れレベル は -50dbu 以下で...

  • Page 39

    39 mg12/4fx 3.13 残留雑音 3.1 の状態で全ての input 部の fader、level control を min にし、assign switch を off にします。 この時、master 部の fader、vr を最大・最小にした時のノイズレベルは[表 3.13-1]のレベル以下であることを確 認します。 * c-r out および phones を測定する時は、st fader を min にしてください。 (ノイズ測定時は、12.7khz、-6db/octave ローパスフィルタを使用してください。 ) 3.14 phantom mic 入力コネクタのピン q...

  • Page 40: Parts List

    Parts list warning components having special characteristics are marked and must be replaced with parts having specification equal to those originally installed. Notes : destination abbreviations the numbers “qty” show quantities for each unit. The parts with “--” in “part no.” are not available as ...

  • Page 41: Overall Assembly Mg12/4Fx

    Mg12/4fx 2 overall assembly mg12/4fx 220 210 530 90 100 110 530 40 40 20 20 90 150 180 10 1/2 70 50 60 30 290 290 320 280 390 160 165 270 250 120 500 510 480 200 250 520 450 470 510 480 500 490 480 480 460 540 550 260 260 165 260 270 270 240 360 230 300 310 330 440 430 410 420 390 390 400 390 370 38...

  • Page 42

    Mg12/4fx 3 : new parts ref no. Part no. Description remarks qty rank rank: japan only * * * * overall assembly mg12/4fx (wc29750) 10 circuit board main 20 support, mix 1 2 30 spacer l=18.5 m3 2 40 bind head tapping screw-s 3.0x6 mfzn2bl 2 01 50 support, mix 2 60 bind head tapping screw-s 3.0x6 mfzn2...

  • Page 43

    Mg12/4fx 4 : new parts ref no. Part no. Description remarks qty rank rank: japan only accessories ac adapter pa-20 j j ac adapter pa-20 u u,v ac adapter pa-20 h h,w ac adapter pa-20 b b ac adapter pa-20 k k ac adapter pa-20 a a ac adapter pa-20 chn o wc704000 wc704100 wc704200 wc704300 wc704400 wc70...

  • Page 44: Electrical Parts

    Mg12/4fx 5 : new parts ref no. Part no. Description remarks qty rank rank: japan only electrical parts electrical parts mg12/4fx circuit board dsp j (wd80120)(x5022c0) circuit board jack j (wc95530)(x5403b0/c0) circuit board main (x5024b0/c0) circuit board ps j (wd80130)(x5235b0) circuit board dsp j...

  • Page 45

    Mg12/4fx 6 : new parts ref no. Part no. Description remarks qty rank rank: japan only icm03 ic pst596dnr system reset 02 icm04 ic ak5381vt-e2 a/d converter 05 icm05 ic rh5rz25ca-t1 regulator +2.5v 03 icm06 ic upc2933at-e1 regulator +3.3v 03 icm07 ic ymw767-v cpu 32 icm07 ic ymw767-vtz 32 icm08 ic pc...

  • Page 46

    Mg12/4fx 7 : new parts ref no. Part no. Description remarks qty rank rank: japan only c771 electrolytic cap.-kl 10.00 50.0v 01 c772 electrolytic cap.-kl 10.00 50.0v 01 c773 electrolytic cap. 10.00 25.0v 01 c774 electrolytic cap. 10.00 25.0v 01 c871 electrolytic cap.-kl 10.00 50.0v 01 c872 electrolyt...

  • Page 47

    Mg12/4fx 8 : new parts ref no. Part no. Description remarks qty rank rank: japan only jkd71 phone jack st msj-064-20b b return l/mono 01 jkd72 phone jack st msj-064-20b b return r 01 jke71 phone jack st msj-064-20b b group out 1 01 jke72 phone jack st msj-064-20b b group out 2 01 jkf71 phone jack st...

  • Page 48

    Mg12/4fx 9 : new parts ref no. Part no. Description remarks qty rank rank: japan only re71 carbon resistor (chip) 75.0 63m j 01 -74 carbon resistor (chip) 75.0 63m j 01 rf71 carbon resistor (chip) 75.0 63m j 01 -74 carbon resistor (chip) 75.0 63m j 01 rg34 carbon resistor (chip) 220.0k 63m j 01 rg35...

  • Page 49

    Mg12/4fx 10 : new parts ref no. Part no. Description remarks qty rank rank: japan only c535 ceramic capacitor-b (chip) 0.0100 50v k 01 c536 electrolytic cap. 100.00 16.0v 01 c537 ceramic capacitor-b (chip) 0.0100 50v k 01 -540 ceramic capacitor-b (chip) 0.0100 50v k 01 c541 ceramic capacitor-sl(chip...

  • Page 50

    Mg12/4fx 11 : new parts ref no. Part no. Description remarks qty rank rank: japan only c737 ceramic capacitor-b (chip) 0.0100 50v k 01 -740 ceramic capacitor-b (chip) 0.0100 50v k 01 c741 ceramic capacitor-sl(chip) 100p 50v j 01 c801 ceramic capacitor-sl(chip) 470p 50v j 01 -803 ceramic capacitor-sl...

  • Page 51

    Mg12/4fx 12 : new parts ref no. Part no. Description remarks qty rank rank: japan only c938 ceramic capacitor-sl(chip) 100p 50v j 01 c939 ceramic capacitor-b (chip) 1000p 50v k 01 c941 electrolytic cap. 47.00 25.0v 01 c942 electrolytic cap. 47.00 25.0v 01 c943 electrolytic cap. 10.00 25.0v 01 c944 e...

  • Page 52

    Mg12/4fx 13 : new parts ref no. Part no. Description remarks qty rank rank: japan only ca54 ceramic capacitor-b (chip) 0.0100 50v k 01 ca55 electrolytic cap. 100.00 16.0v 01 ca56 ceramic capacitor-b (chip) 0.0100 50v k 01 -61 ceramic capacitor-b (chip) 0.0100 50v k 01 ca62 ceramic capacitor-sl(chip)...

  • Page 53

    Mg12/4fx 14 : new parts ref no. Part no. Description remarks qty rank rank: japan only cc33 electrolytic cap. 47.00 25.0v 01 cc34 electrolytic cap. 47.00 25.0v 01 cc35 ceramic capacitor-b (chip) 0.0100 50v k 01 -40 ceramic capacitor-b (chip) 0.0100 50v k 01 cc41 ceramic capacitor-sl(chip) 100p 50v j...

  • Page 54

    Mg12/4fx 15 : new parts ref no. Part no. Description remarks qty rank rank: japan only cg13 electrolytic cap. 47.00 25.0v 01 cg14 electrolytic cap. 47.00 25.0v 01 cg15 electrolytic cap. 47.00 50.0v 01 cg16 electrolytic cap. 47.00 50.0v 01 cg17 electrolytic cap. 10.00 25.0v 01 cg18 electrolytic cap. ...

  • Page 55

    Mg12/4fx 16 : new parts ref no. Part no. Description remarks qty rank rank: japan only emh01 lc filter zjsr5101-223ta 01 emh02 lc filter zjsr5101-223ta 01 ic103 ic njm2068md-te2 op amp 02 ic501 ic njm4580m-d(te2) op amp 01 ic502 ic njm2068md-te2 op amp 02 ic503 ic njm2068md-te2 op amp 02 ic601 ic nj...

  • Page 56

    Mg12/4fx 17 : new parts ref no. Part no. Description remarks qty rank rank: japan only ldh12 led green hfg203tp-1-00 l -20 01 ldh13 led red hfr203tp-1-00 r peak 01 ldh14 led yellow hfy103tp-1-00 r +5 01 ldh15 led yellow hfy103tp-1-00 r +3 01 ldh16 led yellow hfy103tp-1-00 r +1 01 ldh17 led yellow hf...

  • Page 57

    Mg12/4fx 18 : new parts ref no. Part no. Description remarks qty rank rank: japan only r114 carbon resistor (chip) 4.7k 63m j 01 r115 carbon resistor (chip) 22.0k 63m j 01 r116 carbon resistor (chip) 18.0k 63m j 01 r117 carbon resistor (chip) 18.0k 63m j 01 r118 carbon resistor (chip) 12.0k 63m j 01...

  • Page 58

    Mg12/4fx 19 : new parts ref no. Part no. Description remarks qty rank rank: japan only r607 carbon resistor (chip) 3.9k d 1608 01 r608 carbon resistor (chip) 10.0k d 1608 01 r609 carbon resistor (chip) 10.0k d 1608 01 r610 carbon resistor (chip) 27.0 d 1608 01 r611 carbon resistor (chip) 2.2k d 1608...

  • Page 59

    Mg12/4fx 20 : new parts ref no. Part no. Description remarks qty rank rank: japan only r733 carbon resistor (chip) 8.2k 63m j 01 r735 carbon resistor (chip) 100.0k 63m j 01 r736 carbon resistor (chip) 4.7k 63m j 01 r737 carbon resistor 3.3k 1/4 j 01 r739 carbon resistor (chip) 100.0k 63m j 01 r740 c...

  • Page 60

    Mg12/4fx 21 : new parts ref no. Part no. Description remarks qty rank rank: japan only r901 carbon resistor (chip) 10.0 63m j 01 r902 carbon resistor (chip) 2.2k d 1608 01 r903 carbon resistor (chip) 3.9k d 1608 01 r905 carbon resistor (chip) 10.0k 63m j 01 r906 carbon resistor (chip) 10.0k 63m j 01...

  • Page 61

    Mg12/4fx 22 : new parts ref no. Part no. Description remarks qty rank rank: japan only ra09 carbon resistor (chip) 10.0k d 1608 01 ra10 carbon resistor (chip) 2.2k 63m j 01 ra11 carbon resistor (chip) 2.2k 63m j 01 ra12 carbon resistor (chip) 2.2k d 1608 01 ra13 carbon resistor (chip) 3.9k d 1608 01...

  • Page 62

    Mg12/4fx 23 : new parts ref no. Part no. Description remarks qty rank rank: japan only rb15 carbon resistor (chip) 680.0 63m j 01 rb16 carbon resistor (chip) 2.7k 63m j 01 rb17 carbon resistor (chip) 10.0k 63m j 01 -19 carbon resistor (chip) 10.0k 63m j 01 rb20 carbon resistor (chip) 680.0 63m j 01 ...

  • Page 63

    Mg12/4fx 24 : new parts ref no. Part no. Description remarks qty rank rank: japan only hf455100 rd357180 rd357180 rd358220 rd358220 rd358220 rd358220 rd357100 rd357100 rd357130 rd357130 rd357100 rd357100 rd356820 rd356820 rd356470 rd356470 rd356910 rd356910 rd357220 rd355220 rd355220 rd356680 rd3566...

  • Page 64

    Mg12/4fx 25 : new parts ref no. Part no. Description remarks qty rank rank: japan only rd357360 rd357180 rd357180 rd355220 rd355220 rd357220 rd357360 rd357360 rd355220 rd355220 rd357150 rd357100 rd356470 rd356470 rd358220 rd357100 rd357100 rd357200 rd357220 rd357220 rd358100 rd357680 rd356820 rd3564...

  • Page 65

    Mg12/4fx 26 : new parts ref no. Part no. Description remarks qty rank rank: japan only v 9 6 8 3 6 0 0 v 9 6 8 3 6 0 0 v 9 6 8 3 9 0 0 v 9 6 8 3 6 0 0 v 9 6 8 3 6 0 0 v 9 6 8 3 6 0 0 v 9 6 8 3 6 0 0 v 9 6 8 3 9 0 0 v 9 6 8 3 6 0 0 v 9 6 8 3 6 0 0 v 9 6 8 3 6 0 0 v 9 6 8 3 6 0 0 v 9 6 8 3 6 0 0 v 9 6...

  • Page 66

    Mg12/4fx 27 : new parts ref no. Part no. Description remarks qty rank rank: japan only wa507600 v 9 8 8 6 1 0 0 v 9 7 9 1 0 0 0 v 9 7 9 1 0 0 0 v 9 7 9 1 1 0 0 v 9 7 9 1 2 0 0 v 9 7 9 1 2 0 0 v 9 7 9 1 2 0 0 wa507600 v 9 8 8 6 1 0 0 v 9 7 9 1 0 0 0 v 9 7 9 1 0 0 0 v 9 7 9 1 2 0 0 v 9 7 9 1 2 0 0 v 9...

  • Page 67

    Mg12/4fx 28 : new parts ref no. Part no. Description remarks qty rank rank: japan only wd543900 wc050700 wc050700 kb000750 kb000750 x4930a00 x4931a00 x4153a00 x4928a00 x4928a00 wc533400 vq547300 hf457150 hf457100 hf457100 hf457220 hf457150 hf457150 vg442900 vg443700 vg441100 vg442900 vg438900 v 2 4 ...

  • Page 68: Circuit Diagram

    Circuit diagram contents block diagram .................... 3 overall circuit diagram mixing console note: see parts list for details of circuit board component parts. Dsp .................................................................................. 4 jack .........................................

  • Page 69

    1 2 3 4 5 6 a b c d e f g h r992 from cna71 (phantom) lpf d/a a/d a/d +15v -15v ic04 ic01 ic02 +15v -15v +12v +48v ic03 q01 dz01,02 ic05 dz03,04 d03,04,07,14 f01 f02 d05 d09 d10 d06 d02 d01 1 3 2 bl ac adaptor 130 ° c 2a 250v ac100v 50/60hz 3 2 1 130 ° c 2a 250v 130 ° c 2a 250v ac120v 60hz 3 2 1 +15...

  • Page 70: Overall Circuit Diagram

    Rh5rz25ca-t1 a b c d e f g h i j k l m n o p q r s t u v w x y 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 4 overall circuit diagram 1/9 (dsp) mg12/4fx (総回路図) to main -cn101 (to page 11) 28cc1-8831139-1 2 : ceramic capacitor (セラミックコンデンサー) : mylar capacitor (マイラーコンデンサー) system reset a/d converter regul...

  • Page 71: Overall Circuit Diagram

    To main -cn901 (to page 7) to main -cna01 (to page 7) to main -cnd01 (to page 8) to main -cng01 (to page 10) to main -cne01 (to page 9) to main -cn701 (to page 6) 28cc1-8831867-1 : ceramic capacitor (セラミックコンデンサー) to main -cn501 (to page 6) [ch1] mic line insert i/o [ch2] mic line insert i/o [ch3] mi...

  • Page 72: Overall Circuit Diagram

    6 overall circuit diagram 3/9 (main) mg12/4fx (総回路図) a b c d e f g h i j k l m n o p q r s t u v w x y 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 to jack-cn771 (to page 5) to jack-cn571 (to page 5) 28cc1-8831143-1 : ceramic capacitor (セラミックコンデンサー) : mylar capacitor (マイラーコンデンサー) op amp op amp op amp o...

  • Page 73: Overall Circuit Diagram

    To jack-cn971 (to page 5) to jack-cna71 (to page 5) 7 overall circuit diagram 4/9 (main) mg12/4fx (総回路図) 28cc1-8831143-2 : ceramic capacitor (セラミックコンデンサー) : mylar capacitor (マイラーコンデンサー) op amp op amp op amp op amp op amp op amp op amp op amp to page 6:w2 to page 6:b2,8:b2,9:k11 10:v15,11:a4 to page ...

  • Page 74: Overall Circuit Diagram

    A b c d e f g h i j k l m n o p q r s t u v w x y 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 8 overall circuit diagram 5/9 (main) mg12/4fx (総回路図) 28cc1-8831143-3 : ceramic capacitor (セラミックコンデンサー) : mylar capacitor (マイラーコンデンサー) to jack-cnd71 (to page 5) op amp op amp op amp op amp op amp op amp op amp...

  • Page 75: Overall Circuit Diagram

    1 2 3 4 5 6 7 8 9 10 11 12 a b c d e f g h i j k l m n o p q r 9 overall circuit diagram 6/9 (main) mg12/4fx (総回路図) 28cc1-8831143-4 : ceramic capacitor (セラミックコンデンサー) to jack-cne71 (to page 5) op amp op amp op amp op amp op amp to ps-cn02 (to page 12) to page 11:q8 to page 10:l15 to page 10:w12 to pa...

  • Page 76: Overall Circuit Diagram

    28cc1-8831143-5 : ceramic capacitor (セラミックコンデンサー) : mylar capacitor : flame proof carbon resistor (マイラーコンデンサー) (不燃化カーボン抵抗) to jack-cng71 (to page 5) op amp op amp op amp op amp op amp op amp led driver led driver to page 6:b2,7:b3,8:b2 ,9:k11,11:a4 to page 6:b2,7:b4,8:b2 ,9:j11,11:a6 to page 6:b4,7:...

  • Page 77: Overall Circuit Diagram

    1 2 3 4 5 6 7 8 9 10 11 12 a b c d e f g h i j k l m n o p q r 11 overall circuit diagram 8/9 (main) mg12/4fx (総回路図) 28cc1-8831143-6 to dsp-cnm02 (to page 4) op amp : ceramic capacitor (セラミックコンデンサー) to page 9:o2 to page 9:f11 to ps-cn03 (to page 12) to page 6:b2,7:b3,8:b2 ,9:k11,10:v15 to page 6:b2,...

  • Page 78

    A b c d e f g h i j k l m n o p q r s t u v w x y 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 12 overall circuit diagram 9/9 (ps) mg12/4fx (総回路図) 28cc1-8831868-1 : ceramic capacitor (セラミックコンデンサー) to main-cnf01 (to page 9) to main-cn102 (to page 11) regulator +15v regulator -15v regulator +12v regulato...