Yamaha MG82cx, MG102c Service Manual 电路图.pdf

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1、SERVICE MANUAL HAMAMATSU, JAPAN SERVICE MANUAL Copyright (c) Yamaha Corporation. All rights reserved. PDF equivalent to a 20 kHz fi lter with infi nite dB/octave attenuation. Maximum Voltage Gain (1 kHz) All level controls are maxi- mum when measured PAN/BAL: panned hard left or hard right. Electric

2、al Specifi cations General Specifi cations Input Equalization Turn over/roll-off frequency of shelving: 3 dB below maximum variable level. 15 dB maximum PEAK lights if the signal level reaches 3 dB below the clipping level. AC 38 VCT, 0.62 A, Cable Length = 3.6 m 21 W 256.6 mm x 62.2 mm x 302.5 mm 1

3、.6 kg (MG82CX), 1.5 kg (MG102C) LED Level Mete Power Supply Adaptor Dimensions (W x H x D) Net Weight Power Consumption Pre MONITOR Level CHs 1-5/6 CH 7/8 (CHs 7/8, 9/10*) PA-10 2x7 points LED meter (PEAK, +6, +3, 0, 5, 10, 20 dB) HIGH: 10 kHz (shelving) HIGH: 10 kHz (shelving) MID: 2.5 kHz (peaking

4、) LOW: 100 Hz (shelving) LOW: 100 Hz (shelving) Red LED turns on when post EQ signal (either post MIC HA or post EQ signal for CHs 3/4, 5/6) reaches 3 dB below clipping (+17 dBu) 16 PROGRAM, PARAMETER control Foot Switch (Digital Effect On/Off) All level controls are nominal if not specifi ed. Outpu

5、t impedance of signal generator: 150 ohms The MG82CX feature is described fi rst, followed by the MG102C feature in brackets: MG82CX (MG102C) RadioFans.CN 收音机爱 好者资料库 MG82CX/MG102C 4 Input Specifi cations Input ConnectorsGain Input Impedance Appropriate Impedance Sensitivity *Nominal Level Max. befor

6、e Clipping Connector Specifi cations CH INPUT MIC (CHs 1, 2) CH INPUT LINE (CHs 1, 2) ST CH MIC INPUT (CHs 3/4, 5/6) ST CH LINE INPUT (CHs 3/4, 5/6) ST CH INPUT (CH 7/8 (CHs 7/8, 9/10) CH INSERT IN (CHs 1, 2) RETURN (L, R) 2TR IN (L, R) 60 dB 16 dB 34 dB +10 dB 60 dB 16 dB 34 dB +10 dB 3 k 50600 Mic

7、s 10 k 600 Lines 3 k 50600 Mics 10 k 600 Lines 10 k 600 Lines 10 k 600 Lines 10 k 600 Lines 10 k 600 Lines 72 dBu (0.195 mV)60 dBu (0.775 mV)40 dBu (7.75 mV) 28 dBu (30.8 mV)16 dBu (123 mV)+4 dBu (1.23V) 46 dBu (3.88 mV)34 dBu (15.5 mV)14 dBu (155 mV) 2 dBu (0.615 V)+10 dBu (2.45 V)+30 dBu (24.5 V)

8、72 dBu (0.195 mV)60 dBu (0.775 mV)40 dBu (7.75 mV) 28 dBu (30.8 mV)16 dBu (123 mV)6 dBu (389 mV) 46 dBu (3.88 mV)34 dBu (15.5 mV)14 dBu (155 mV) 2 dBu (0.615 V)+10 dBu (2.45 V)+30 dBu (24.5V) 22 dBu (61.5 mV)10 dBu (245 mV)+10 dBu (2.45 V) 12 dBu (195 mV)0 dBu (0.775 V)+20 dBu (7.75 V) 8 dBu (308 mV

9、)+4 dBu (1.23 V)+24 dBu (12.3 V) 22 dBV (79.4 mV)10 dBV (0.316 V)+10 dBV (3.16 V) XLR-3-31 type (balanced 1 = GND, 2 = HOT, 3 = COLD) TRS phone jack (balanced Tip = HOT, Ring = COLD, Sleeve = GND) XLR-3-31 type (balanced 1 = GND, 2 = HOT, 3 = COLD) Phone jack (unbalanced) Phone jack (unbalanced) RCA

10、 pin jack TRS phone jack (unbalanced Tip = Out, Ring = In, Sleeve = GND) Phone jack (unbalanced) RCA pin jack Where 0 dBu = 0.775 Vrms and 0 dBV= 1 Vrms * Sensitivity :The lowest level that will produce an output of +4 dB (1.23 V), or the nominal output level when the unit is set to the maximum leve

11、l. (All level controls are at their maximum position.) Output Specifi cations Output Connectors Output Impedance Appropriate Impedance Nominal Level Max. before clipping Connector Specifi cations Where 0 dBu = 0.775 Vrms and 0 dBV= 1 Vrms STEREO OUT (L, R) EFFECT SEND (AUX SEND*) CH INSERT OUT (CHs

12、1, 2) REC OUT (L, R) MONITOR OUT (L, R) PHONES OUT 150 150 75 600 150 100 10 k Lines 10 k Lines 10 k Lines 10 k Lines 10 k Lines 40 Phones +4 dBu (1.23 V) +4 dBu (1.23 V) 0 dBu (0.775 V) 10 dBV (0.316 V) +4 dBu (1.23 V) 3 mW Phone jack (impedance balanced Tip = HOT, Ring = COLD, Sleeve = GND) Phone

13、jack (impedance balanced Tip = HOT, Ring = COLD, Sleeve = GND) Phone jack (unbalanced Tip = OUT, Ring = IN, Sleeve = GND) RCA Pin jack Phone jack (impedance balanced Tip = HOT, Ring = COLD, Sleeve = GND) Stereo phone jack +20 dBu (7.75 V) +20 dBu (7.75 V) +20 dBu (7.75 V) +10 dBV (3.16 V) +20 dBu (7

14、.75 V) 75 mW * The MG82CX feature is described fi rst, followed by the MG102C feature in brackets: MG82CX (MG102C) 5 MG82CX/MG102C * “LFO” stands for Low Frequency Oscillator. An LFO is normally used to modulate another signal, determining the modulation speed and waveform shape. Digital Effect Prog

15、ram List NoProgramParameterDescription 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 REVERB HALL 1 REVERB HALL 2 REVERB ROOM 1 REVERB ROOM 2 REVERB STAGE 1 REVERB STAGE 2 REVERB PLATE DRUM AMBIENCE KARAOKE ECHO VOCAL ECHO CHORUS 1 CHORUS 2 FLANGER PHASER AUTO WAH DISTORTION REVERB TIME REVERB TIME REVERB T

16、IME REVERB TIME REVERB TIME REVERB TIME REVERB TIME REVERB TIME DELAY TIME DELAY TIME LFO Frequency LFO Frequency LFO Frequency LFO Frequency LFO Frequency DRIVE Reverb simulating a large space such as a concert hall. Reverb simulating the acoustics of a small space (room). Reverb simulating a large

17、 stage. Simulation of a metal-plate reverb unit, producing a more hard-edged sound. A short reverb that is ideal for use with kick drum. Echo designed for karaoke (sing-along) applications. Echo suitable for vocals. Creates a thick sound by modulating the delay time. The PARAMETER control adjusts th

18、e frequency of the LFO* that modulates the delay time. A sweeping pitched effect. The PARAMETER control adjusts the frequency of the LFO* that modulates the delay time. Phase modulation produces a cyclical phasing effect. The PARAMETER control adjusts the frequency of the LFO* that modulates the del

19、ay time. A wah-wah effect with cyclical fi lter modulation. The PARAMETER control adjusts the frequency of the LFO* that modulates the delay time. Adds a sharp-edged distortion to the sound. MG82CX/MG102C 6 総合仕様 残留 電気的特性 特指定場合、位置。 出力 : 150 *MG82CX (MG102C)表示。 一般仕様 周波数特性STEREO OUT STEREO OUT GAIN：最小（

20、CH1-5/6） 20 Hz-20 kHz 出力 1 kHz EFFECTSEND (AUXSEND*) MONITOROUT、 RECOUT 3.0 MINTYPMAXUNIT 1.0 dB 3.01.0 3.01.0 128 dBu 87 85 64 100 70 dB 70 60 76 58.2 92 81 76 50 47 26 12 23.8 48 dB %0.1 V +14dBu、20 Hz-20 kHz、全高調波歪率 (THD+N) 入力換算 : Rs = 150 、 GAIN: 最大 (CH1、2) STEREO : 、 全 : 最小 全 EFFECT (AUX*) : 最小

21、STEREO&CH1、2 ： 最大電圧 (1 kHz) 測定時、全 最大 PAN/BAL: 左右回切 Rs = 150 Rs = 150 Rs = 600 INPUT GAIN: 最大 MIC CHINSERT OUT MIC STEREO OUT LINE STEREO OUT ST CH 7/8、(CH 7/8、9/10*) STEREO OUT 2TN IN STEREO OUT RETURN STEREO OUT 負荷電源MIC MIC REC OUT MIC MONITOR OUT MIC PHONES OUT MIC EFFECT SEND (AUX SEND*) LINE EFF

22、ECT SEND (AUX SEND*) & 12.7 kHz、6dB/octave 測定 (20 kHz、- dB/octave 相当 ) GAIN : 最小 入力: CH INPUT 1、 STEREO OUT STEREO OUT STEREO OUT EFFECT SEND (AUX SEND*) 入力間 入出力間 （1 kHz）CH1、2 STEREO L/R、CH 1、2、PAN:左右回切 2 MIC CH 1-5/6、80 Hz、12 dB/oct 最大 15 dB / 周波数: 最大可変幅対3 dB 下 CH 1-5/6HIGH: 10 kHz ( ) MID: 2.5 kHz

23、 ( ) LOW: 100 Hz ( ) CH 7/8 (CH 7/8、9/10*)HIGH: 10 kHz ( ) LOW: 100 Hz ( ) PEAK 後信号 (CH3/4、5/6 MIC 後 後信号) 手前 3 dB (+17 dBu) 達赤点灯 内蔵*16 、PARAMETER ( / ) LED 調整前2x7 LED (PEAK、+6、+3、0、-5、-10、-20 dB) 信号手前3 dB 達PEAK 点灯 電源AC 38 VCT、0.62 A、長: 3.6 mPA-10 消費電力21 W 最大外形寸法 (W H D)256.6 mm 62.2 mm 302.5 mm 質量1.

24、6 kg (MG82CX)、1.5 kg (MG102C) 7 MG82CX/MG102C 入力仕様 出力仕様 5/6) ( 9/10) 0 dBu = 0.775 Vrms、0 dBV= 1 Vrms 0 dBu = 0.775 Vrms、0 dBV= 1 Vrms * 入力感度: 最大設定時+4 dB (1.23 V) 出力得最小( 最大)。 入力端子名称 出力端子名称 感度* 端子仕様 端子仕様 入力 出力 適合 適合 最大 最大 72 dBu (0.195 mV) 60 dBu (0.775 mV) 40 dBu (7.75 mV) 28 dBu (30.8 mV) 16 dBu (1

25、23 mV) +4 dBu (1.23 V) 46 dBu (3.88 mV) 34 dBu (15.5 mV) 14 dBu (155 mV) 72 dBu (0.195 mV) 60 dBu (0.775 mV) 40 dBu (7.75 mV) 28 dBu (30.8 mV) 16 dBu (123 mV) 6 dBu (389 mV) 46 dBu (3.88 mV) 34 dBu (15.5 mV) 14 dBu (155 mV) 22 dBu (61.5 mV) 10 dBu (245 mV) +10 dBu (2.45 V) 12 dBu (195 mV) 0 dBu (0.7

26、75 V) +20 dBu (7.75 V) 8 dBu (308 mV) + 4dBu (1.23 V) +24 dBu (12.3 V) 22 dBV (79.4 mV) 10 dBV (0.316 V) +10 dBV (3.16 V) 2 dBu (0.615 V) +10 dBu (2.45 V) +30 dBu (24.5 V) 2 dBu (0.615 V) +10 dBu (2.45 V) +30 dBu (24.5 V) CHINPUTMIC (CH1、2) CHINPUTLINE (CH 1、2) STCHMIC INPUT (CH 3/4、5/6) STCHLINE IN

27、PUT (CH 3/4、 STCHINPUT (CH 7/8 (CH 7/8、 CHINSERTIN (CH 1、2) RETURN (L、R) 2TRIN (L、R) 60 dB 16 dB 34 dB +10 dB +10 dB 60 dB 16 dB 34 dB 3 k 10 k 3 k 10 k 10 k 10 k 10 k 10 k 50 600 Mics 600 Lines 50 600 Mics 600 Lines 600 Lines 600 Lines 600 Lines 600 Lines * MG82CX (MG102C) 表示。 STEREO OUT (L、R) EFFE

28、CT SEND (AUX SEND *4) CH INSERT OUT (CH 1、2) REC OUT (L、R) MONITOR OUT (L、R) PHONES OUT 150 150 75 600 150 100 10 k Lines 10 k Lines 10 k Lines 10 k Lines 10 k Lines 40 Phones +4 dBu (1.23 V) +4 dBu (1.23 V) 0 dBu (0.775 V) 10 dBV (0.316 V) +4 dBu (1.23 V) 3 mW +20 dBu (7.75 V) +20 dBu (7.75 V) +20

29、dBu (7.75 V) +10 dBV (3.16 V) +20 dBu (7.75 V) 75 mW (型 T=、 R=、S= ) (型T=、 R=、S= ) (型 T=、R=、 S= ) RCA (型 T=、 R=、S= ) XLR-3-31 (型 1= 、2= 、3= ) TRS (型 T= 、R=、S = ) XLR-3-31 (型 1= 、2= 、3= ) 型) (型) RCA TRS (型 T=、R= 、S= ) (型) RCA MG82CX/MG102C 8 広空間（残響効果）。 小空間（部屋）響。 広。 鉄板。硬残響感得。 適短。 使用想定。 用想定。 異遅延時間音複数加、音

30、厚加。 PARAMETER、遅延時間変調LFO (*) 周波数調整。 音色音程感強加。 PARAMETER、遅延時間変調LFO (*) 周波数調整。 音位相変化、音加。 PARAMETER、位相変調LFO (*) 周波数調整。 周期的変化効果加。 PARAMETER、制御LFO (*) 周波数調整。 音歪、効果加。 PROGRAM 一覧 NoProgramParameter内容 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 REVERB HALL 1REVERB TIME REVERB HALL 2REVERB TIME REVERB ROOM 1REVERB

31、TIME REVERB ROOM 2REVERB TIME REVERB STAGE 1REVERB TIME REVERB STAGE 2REVERB TIME REVERB PLATEREVERB TIME DRUM AMBIENCEREVERB TIME KARAOKE ECHODELAY TIME VOCAL ECHODELAY TIME CHORUS 1LFO 周波数 CHORUS 2LFO 周波数 FLANGERLFO 周波数 PHASERLFO 周波数 AUTO WAHLFO 周波数 DISTORTIONDRIVE * LFO: Low Frequency Oscillator（

32、低周波発振器）略。別信号周期的変化（変調）場合使。 9 MG82CX/MG102C CIRCUIT BOARD LAYOUT DIMENSIONS （） （寸法図） 256.6 302.5 62.2 55.2 2 300 Unit （単位） : mm Bottom case assembly （Ass y） MAIN8MAIN (MG82CX) MAIN10MAIN (MG102C) MAIN8JACK (MG82CX) DSP(MG82CX only) MAIN10JACK (MG102C) MG82CX/MG102C 10 Channels 1 and 2 (Monaural) MG82C

33、X Channels 3/4 and 5/6 (Stereo) Channels 7/8 (7/8 and 9/10) (Stereo) ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? PANEL LAYOUT q MIC Input Jacks (CHs 1 to 5/6) w LINE Input Jacks (CHs 1, 2) e LINE Input Jacks (CHs 3/4 to 7/8 (CHs 3/4 to 9/10) r LINE Input Jacks (CH 7/8, (CHs 7/8, 9/10) t INSERT

34、 Jacks (CHs 1, 2) y GAIN Control u 80 Switch (High Pass Filter) i COMP Control o PEAK Indicator !0 Equalizer (HIGH, MID, and LOW) !1 EFFECT (AUX) Control !2 PAN Control (CHs 1, 2) PAN/BAL Control (CHs 3/4, 5/6) BAL Control (CH 7/8 (CHs 7/8, 9/10) !3 Level Control Channel Control Section （部） The foll

35、owing applies to both the MG82CX and MG102C. In cases where different features need to be described for each model, the MG82CX feature will be described fi rst, followed by the MG102C feature in brackets: MG82CX (MG102C). （以下 MG82CX MG102C 共通説明。名称異場合、MG82CX (MG102C) 表記。 ） （） q MIC 入力端子 (CH1 5/6) w L

36、INE 入力端子 (CH1、2) e LINE 入力端子 (CH3/4 7/8、(CH3/4 9/10) r LINE 入力端子 (CH7/8 (CH7/8、9/10) t INSERT 端子 (CH1、2) y GAIN u 80 ( ) i COMP o PEAK !0 EQ ( : HIGH、MID、LOW) !1 EFFECT (AUX) !2 PAN (CH1、2) PAN/BAL (CH3/4、5/6) BAL (CH7/8 (CH7/8、9/10) !3 11 MG82CX/MG102C ? ? ? ? ? ? ? ? ? ? ? ? ? MG82CX Master Contro

37、l Section （部） q 2TR IN Jacks w REC OUT (L, R) Jacks e RETURN L (MONO), R Jacks r SEND EFFECT (AUX) Jack t STEREO OUT (L, R) Jacks y MONITOR (L, R) Jacks u PHONES Jack i PHANTOM +48 V Switch o RETURN Control !0 POWER Indicator !1 Level Meter !2 2TR IN 2TR IN Switch 2TR IN control !3 MONITOR/PHONES Co

38、ntrol !4 STEREO Master Control q 2TR IN 端子 w REC OUT (L、R) 端子 e RETURN L (MONO)、R 端子 r EFFECT (AUX) SEND 端子 t STEREO OUT (L、R) 端子 y MONITOR (L、R) 端子 u PHONES 端子 i PHANTOM +48 V o RETURN !0 POWER !1 !2 2TR IN 2TR IN 切替 2TR IN !3 MONITOR/PHONES !4 STEREO MG82CX/MG102C 12 ? ? ? ? ? ? MG82CX DIGITAL EFF

39、ECT （部） Rear Input/Output Section （部） DIGITAL EFFECT q FOOT SWITCH Jack w PROGRAM Dial e PARAMETER Control r ON Switch t EFFECT RTN Control Rear Input/Output Section y POWER Switch u AC ADAPTOR IN Connector * Only the MG82CX has digital effects. （機能 MG82CX 内蔵。 ） 部 q FOOT SWITCH 端子 w PROGRAM 選択 e PAR

40、AMETER r ON t EFFECT RTN 部 y 電源 u AC ADAPTOR IN 端子 13 MG82CX/MG102C 端子一覧 * 端子端子使用。場合、。 入出力端子名端子極性端子形状 MIC INPUT 1: 2: (+) 3: () LINE INPUT(CH1、2) STEREO OUT、MONITOR、 EFFECT (AUX)* : (+) : () : INSERT : Output : Input : PHONES : L : R : RETURN LINE INPUT (CH3/4 7/8 (3/4 9/10) : : OUTPUT INPUT Jack Li

41、st * These jacks will also accept connection to monaural phone plugs. If you use monaural plugs, the connection will be unbalanced. Input and Output JacksPolarities Confi gurations MIC INPUTPin 1: Ground Pin 2: Hot (+) Pin 3: Cold () LINE INPUT(CHs 1, 2) STEREO OUT, MONITOR OUT, EFFECT (AUX)* Tip: H

42、ot (+) Ring: Cold () Sleeve: Ground INSERTTip: Output Ring: Input Sleeve: Ground PHONESTip: L Ring: R Sleeve: Ground RETURN LINE INPUT (CHs 3/4 to 7/8 (CHs 3/4 to 9/10) Tip: Hot Sleeve: Ground OUTPUTINPUT TipSleeve Ring TipSleeve MG82CX/MG102C 14 GENERAL SCHEMATIC DIAGRAM（総組立配線図） 1. 束線 AC (WH54770)

43、処理 (a). 線材 3 本束、基板部品面側 20 mm （：300） 固定。 (b). 固定線材 POWER SW 方向倒。 線材倒、端子掛 注意。 1. Processing Method of Wiring Assembly AC (WH54770) (a). Bundle three wires and fi x them with the cord holder (location: 300) at a position 20 mm away from the component side of the circuit board. (b). Incline the bundled

44、wires in the direction of the POWER switch. Handle the wires carefully so that too much stress is not applied to the connector terminals when inclining the wires. 20 mm POWER switch Cord holder Location: 300 Incline the fixed wires in the direction of the POWER switch. （電源） （固定線材電源 方向倒） （） （: 300） 2

45、. Processing Method of Jumper Leads2. 処理 ABC A (a). Bend the jumper leads in the direction of the MIX cir- cuit board. (b). Bend back the jumper leads in the direction of the JACK circuit board. (c). After bending as mentioned above, press down the jumper leads until the distance between their top e

46、nd and the MIX circuit board surface is 15 mm or less. A (a). MIX 基板方向折曲。 (b). 再度 JACK 基板方向折返 。 (c). 折曲後、MIX 基板面 15mm 以下上押。 15 MG82CX/MG102C 15 mm JACK c b MIX a JACK Heat-sink MIX 15 mm Bend the jumper leads to make an M-like figure. （M字 形状折曲） AB B (a). Bend the jumper leads to make an M-like fi gu

47、re. (b). After bending as mentioned above, deal with the jumper leads until the distance between their top end and the MIX circuit board surface is 15 mm or less. C (a). Bend the jumper leads in the direction of the MIX cir- cuit board. B (a). M 字形状折曲。 (b). 折曲後、MIX 基板面 15mm 以下 処理。 C (a). MIX 基板方向折曲。

48、 JACKMIX 15 mm a C MG82CX/MG102C 16 160 160160 Knob （） Knob （） Knob （） 160 160 A 163A 165 Knob （） Top cover （） Window level （LEVEL） Window level （LEVEL） Bottom case assembly （Ass y） Screw tighten (1st) （締 （1番） ） Screw tighten (2nd) （締 （2番） ） （締 （最後） ） Screw tighten (latest) DISASSEMBLY PROCEDURE（分解手

49、順） 1. （所要時間：約 7 分） 1-1 本体外。 （図 1） 1-2 160 14 本 163A 1 本、165 1 本、A 六角 19 個 外、外。 （図 1） LEVEL 構成部品 。交換場合、 LEVEL 取外新 取付。 （図 1） Assy 取付 、図 1 示順序締 。 （図 1） 2. DSP 、MAIN8 （所要時間：各約 8 分） 2-1 外。 （1 項参照） 2-2 100 2 本 163B 1 本外、 MAIN8 外。 （図 2） Fig. 1 ( 図 1) MG82CX 160: Bind Head Tapping Screw-B（B BIND）3.0X8 MFZN2B3 (WE774400) 163: Bind Head Tapping Screw-B（B BIND）3.0X8 MFZN2