Yamaha-MG206-mix-sm 维修电路原理图.pdf

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1、SERVICE MANUALSPECIFICATIONS （総合仕様） .3/5DIMENSIONS （寸法図）.7PANEL LAYOUT （） .8CIRCUIT BOARD LAYOUT （）.11WIRING DIAGRAM （基板結線図） .12OVERALL ASSEMBLY WIRING （総組立配線図） .13DISASSEMBLY PROCEDURES （分解手順） .19LSI PIN DESCRIPTION （LSI端子機能表） .24IC BLOCK DIAGRAM （IC図） .24CIRCUIT BOARDS （基板図） .27INSPECTIONS （検査） .3

2、7/44PARTS LISTIC & DIODE FIGURES （外形図）BLOCK & LEVEL DIAGRAM （&）CIRCUIT DIAGRAM （回路図）I CONTENTS （目次）PA011870Copyright (c) Yamaha Corporation. All rights reserved. 07.08HAMAMATSU, JAPAN（ECF：無塩素系漂白）使用。This document is printed on chlorine free (ECF) paper.MG206C: 200708-94290MG206C-USB: 200708-102690MG2

3、06C-USBMG206CRadioFans.CN 收音机爱 好者资料库MG206C-USB/MG206C2IWARNINGComponents having special characteristics are marked and must be replaced with parts having specification equal to those originallyinstalled. 印部品、安全維持重要部品。交換場合、安全必指定部品使用。IMPORTANT NOTICEThis manual has been provided for the use of authori

4、zed Yamaha Retailers and their service personnel. It has been assumed that basic serviceprocedures inherent to the industry, and more specifically Yamaha Products, are already known and understood by the users, and havetherefore not been restated.WARNING:Failure to follow appropriate service and saf

5、ety procedures when servicing this product may result in personal injury, destruc-tion of expensive components and failure of the product to perform as specified. For these reasons, we advise all Yamahaproduct owners that all service required should be performed by an authorized Yamaha Retailer or t

6、he appointed servicerepresentative.IMPORTANT:This presentation or sale of this manual to any individual or firm does not constitute authorization, certification, recognition ofany applicable technical capabilities, or establish a principal-agent relationship of any form.The data provided is believed

7、 to be accurate and applicable to the unit(s) indicated on the cover. The research engineering, and servicedepartments of Yamaha are continually striving to improve Yamaha products. Modifications are, therefore, inevitable and changes in specifica-tion are subject to change without notice or obligat

8、ion to retrofit. Should any discrepancy appear to exist, please contact the distributors ServiceDivision.WARNING:Static discharges can destroy expensive components. Discharge any static electricity your body may have accumulated bygrounding yourself to the ground bus in the unit (heavy gauge black w

9、ires connect to this bus).IMPORTANT:Turn the unit OFF during disassembly and parts replacement. Recheck all work before you apply power to the unit.WARNING: CHEMICAL CONTENT NOTICE!The solder used in the production of this product contains LEAD. In addition, other electrical/electronic and/or plasti

10、c (Where applicable)components may also contain traces of chemicals found by the California Health and Welfare Agency (and possibly other entities) to causecancer and/or birth defects or other reproductive harm.DO NOT PLACE SOLDER, ELECTRICAL/ELECTRONIC OR PLASTIC COMPONENTS IN YOUR MOUTH FOR ANY RE

11、ASON WHAT SOEVER!Avoid prolonged, unprotected contact between solder and your skin! When soldering, do not inhale solder fumes or expose eyes to solder/fluxvapor!If you come in contact with solder or components located inside the enclosure of this product, wash your hands before handling food.IMPORT

12、ANT NOTICE FOR THE UNITED KINGDOMConnecting the Plug and CordWARNING:THIS APPARATUS MUST BE EARTHEDIMPORTANT.The wires in this mains lead are coloured in accordance with the following code:GREEN-AND-YELLOW:EARTHBLUE:NEUTRALBROWN:LIVEAs the colours of the wires in the mains lead of this apparatus may

13、 not correspond with the coloured markings identifying the terminals in yourplug, proceed as follows:The wire which is coloured GREEN and YELLOW must be connected to the terminal in the plug which is marked by the letter E or by the safetyearth symbol or colored GREEN or colored GREEN and YELLOW.The

14、 wire which is coloured BLUE must be connected to the terminal which is marked with the letter N or coloured BLACK.The wire which is coloured BROWN must be connected to the terminal which is marked with the letter L or coloured RED.RadioFans.CN 收音机爱 好者资料库MG206C-USB/MG206C3ISPECIFICATIONS Electrical

15、Specifications General SpecificationsMG206C-USB/MG206C4 Analog Input Specifications Analog Output Specifications Digital Input/Output Specifications (MG206C-USB only)MG206C-USB/MG206C5 総合仕様電気的特性一般仕様MG206C-USB/MG206C6入力仕様出力仕様入出力仕様（MG206C-USB）MG206C-USB/MG206C7IDIMENSIONS （寸法図）Unit: mm単位：mm44447810298

16、54964341488.5MG206C-USBMG206C-USB/MG206C8IPANEL LAYOUT （） Channel Control Section （部）MIC Input JacksLINE Input Jacks (monaural channels)LINE Input Jacks (stereo channels)LINE Input Jacks (stereo channels)INSERT JacksGAIN Control 80 Switch (High-Pass Filter)COMP ControlPEAK IndicatorEqualizer (HIGH,

17、MID and LOW)AUX, EFFECT ControlAUX PRE SwitchPAN ControlPAN/BAL ControlBAL ControlON SwitchPFL (Pre-Fader Listen) Switch1-2 Switch3-4 SwitchST SwitchChannel Fader1234567890ABCDEFGHI1234567890ABCDEFGHIMIC入力端子LINE入力端子 （）LINE入力端子 （）LINE入力端子INSERT端子GAIN 80 （） COMPPEAKEQ （：HIGH、MID、LOW）AUX、EFFECTAUX PREP

18、ANPAN/BALBALONPFL1-23-4ST121566CCDDFGHFGHIIEE0A997780ABB43Channels13/14 and 15/16(Stereo)13/14、15/16（） Channels1 to 8(Monaural)18（） Channels9 to 12(Monaural)912（） Channels17/18 and 19/20(Stereo)17/18、19/20（） MG206C-USB/MG206C9 Master Control Section （部）1234567890ABCDEFGHIJKLUSB Connector (MG206C-USB

19、 only)SEND Jacks (AUX, EFFECT)GROUP OUT (1 to 4) JacksREC OUT (L, R) Jacks2TR IN JacksRETURN L (MONO), R JacksSTEREO OUT (L, R) JacksXLR JacksLINE JacksMONITOR OUT JacksPHONES JackPHANTOM +48 V SwitchPOWER IndicatorLevel MeterRETURNAUX1, AUX2 ControlSTEREO ControlMaster SEND Controls (AUX, EFFECT)MO

20、NITOR/PHONESMONITOR SwitchesMONITOR Control2TR IN (MG206C)2TR IN/USB (MG206C-USB)2TR IN/USB Switch2TR IN/USB ControlGROUP 1-2 FaderGROUP 3-4 FaderST SwitchSTEREO OUT Master FaderPOWER SwitchAC ADAPTOR IN Connector1234567890ABCDEFGHIJKLUSB端子 （MG206C-USB）SEND端子 （AUX、EFFECT）GROUP OUT （1-4） 端子REC OUT （L

21、、R） 端子2TR IN端子RETURN L （MONO） 、R端子STEREO OUT （L、R） 端子 XLR端子 LINE端子MONITOR OUT端子PHONES端子PHANTOM +48 VPOWERRETURN AUX1、2 STEREOSEND （AUX、EFFECT）MONITOR/PHONES 信号切替 2TR IN （MG206C）2TR IN/USB （MG206C-USB） 出力先切替 2TR IN/USBGROUP 1-2GROUP 3-4STSTEREO OUT電源AC ADAPTOR IN端子ABJEFD0C798IGH136542Rear panelKLMG20

22、6C-USB/MG206C10 Connector Polarities 端子接続極性Input and Output JacksPolaritiesConfigurationsMIC INPUT, STEREO OUTPin 1: GroundPin 2: Hot (+)Pin 3: Cold ()LINE INPUT (monaural channels)GROUP OUT, STEREO OUT, MONITOR OUT, AUX SENDTip: Hot (+)Ring: Cold ()Sleeve: GroundINSERTTip: OutputRing: InputSleeve:

23、GroundPHONESTip: LRing: RSleeve: GroundRETURNLINE INPUT (stereo channels)Tip: HotSleeve: GroundOUTPUTINPUTXLR JackTipSleeveRingTRS Phone JackTipSleevePhone Jack入出力端子名端子極性端子形状MIC INPUT、STEREO OUTLINE INPUT（）GROUP OUT、STEREO OUT、MONITOR OUT、AUX SENDINSERTPHONESRETURNLINE INPUT（）OUTPUTINPUTTRS端子1：2：（+）

24、3：（）：（+）：（）：Output：Input：L：R：端子XLR端子MG206C-USB/MG206C11ICIRCUIT BOARD LAYOUT （）Rear（）(MG206C-USB only)Front（）JACK20FJACK20RMIX20PS20USBMG206C-USB/MG206C12IWIRING DIAGRAM （基板結線図）7P-1103P-1402P-3809P-14010P-70015P-720123456(WJ98020)(WJ98040)(WJ98050)(WJ78450)(WJ78460)(WJ78470)MIX20-CN053 PS20-CN101JAC

25、K20F-CN001 PS20-CN102JACK20R-CN002 PS20-CN103JACK20R-CN903 USB-CN101MIX20-CN003 JACK20R-CN003MIX20-CN004 JACK20R-CN004Connector Assembly PS7PConnector Assembly PS3PConnector Assembly PS2PConnector Assembly USB20Connector Assembly REAR10PConnector Assembly REAR15PPS7P束線PS3P束線PS2P束線USB20束線REAR10P束線REA

26、R15P束線 40 50 60100130140MG206C-USB onlyRemarks備考No.Part No.Assembly Name線材名Connection接続LocationCN003(10P)CN903(9P)CN002(2P)CN004(15P)CN101(9P)CN103(2P)CN102(3P)CN101(7P)CN001(3P)W501(9P)W601(9P)W701(9P)W801(9P)W001(6P)W002(9P)W101(9P)W201(9P)W301(9P)W401(9P)CN501(9P)CN601(9P)CN701(9P)CN801(9P)CN001(

27、6P)CN002(9P)CN101(9P)CN201(9P)CN301(9P)CN401(9P)CN053(7P)CN004(15P)CN003(10P)325164JACK20RJACK20FPS20USB(MG206C-USB only)MIX20MG206C-USB/MG206C13IOVERALL ASSEMBLY WIRING （総組立配線図）The inside room of this product is very little because a lot of units are installed fully.To prevent the panels coming up

28、and other things when assembling, perform the cable connection according to the followings.（、集積度高、内部余裕。組立時浮等防止為、束線処理下記行。）Note: The components marked “ * ” are used only for MG206C-USB.（注：“” 部品MG206C-USB使用。）1.The wiring of the Inner Chassis Assembly. （Ass y配線）1-1. Before installing the JACK20R Ref. 1

29、20 circuit board in the inner chassis Assembly Ref. 20, connect the following connectorassemblies to the JACK20R Ref. 120 circuit board and bind the connector assemblies with the cord binder Ref. 180.（Ass y Ref. 20 取付前、JACK20R Ref. 120 下記束線取付、 Ref. 180 結束。）60100 *130140Connector Assembly PS2PConnect

30、or Assembly USB20Connector Assembly REAR10PConnector Assembly REAR15PPS2P束線USB20束線REAR10P束線REAR15P束線Ref. No.Connector Assembly Name線材名*CN004CN002CN903CN00314060100130120180Note: Binding positionBind at the end of tape on the connector assembly Rear15P Ref. 140.（注： 結束位置REAR15P束線 Ref. 140 上端目安結束。）MG20

31、6C-USB/MG206C141-2. Install the heatsink assembly Ref. 30, USB assembly * Ref. 90 and JACK20R circuit board Ref. 120 in the inner chassisassembly Ref. 20.（Ass y Ref. 30 、 USB Ass y Ref. 90 、JACK20R Ref. 120 Ass y Ref. 20 取付。）1-3. Connect the connector assemblies according to the picture below.（下記写真従

32、配線。）*100*9030CN10360CN10250CN1014012020180180Note: Fix the connector assembly PS2P Ref. 60, connector assembly REAR10P Ref. 130 and connectorassembly REAR15P Ref. 140 with the cord binder Ref. 180.（注： PS2P束線 Ref. 60 REAR10P束線 Ref. 130 REAR15P束線 Ref. 140 Ref.180 固定。）Note: Twist connector assemblies t

33、hree times in this section.（注： 区間、束線3回。）Note: Fix the connector assembly REAR10P Ref. 130, connector assembly REAR15P Ref. 140, connectorassembly PS7P Ref. 40 and connector assembly PS3P Ref. 50 with the cord binder Ref. 180.（注： REAR10P束線 Ref. 130 、REAR15P束線 Ref. 140 、PS7P束線 Ref. 40 、PS3P束線 Ref. 50

34、Ref. 180 固定。）MG206C-USB/MG206C151-4. Install the inner chassis assembly Ref. 20 on the bottom case assembly Ref. 10.（Ass y Ref. 20 Ass y Ref. 10 取付。）20104050130 140230Note: Fix the connector assembly REAR10P Ref. 130 and connector assem-bly REAR15P Ref. 140 with the cord holder Ref. 230.（注： REAR10P束

35、線 Ref. 130 REAR15P束線 Ref. 140 束線止 Ref.230 固定。）Note: Pass the connector assembly REAR10P Ref. 130 and connector assembly REAR15P Ref. 140 throughthe incision part of inner chassis assembly Ref. 20. At that time, take care the cables not to be slack-ened.（注： REAR10P束線 Ref. 130 REAR15P束線 Ref. 140 、Ass

36、y Ref. 20 切欠通。時、線材注意。）MG206C-USB/MG206C162.The wiring of the MIX20 circuit board and JACK20F circuit board.（MIX20JACK20F配線）Whole picture （全体写真）2505013040140MIX20CN003MIX20K051MIX20K052MIX20CN101MIX20CN201MIX20CN301MIX20CN401MIX20CN501MIX20CN601MIX20CN701MIX20CN801MIX20CN001JACK20FCN001JACK20FK101MIX

37、20CN053MIX20CN002MIX20CN004340MG206C-USB/MG206C172-1. Connect the connector assemblies from the inner chassis assembly.（Ass y束線配線。）Macro picture around CN053 on the MIX20 circuit board. （MIX20CN053周辺拡大写真）Ref. 40Ref. 50Ref. 130Ref. 140Connector Assembly PS7PConnector Assembly PS3PConnector Assembly R

38、EAR10PConnector Assembly REAR15PPS7P束線PS3P束線REAR10P束線REAR15P束線MIX20 circuit boardCN053JACK20F circuit board CN001MIX20 circuit boardCN003MIX20 circuit boardCN004Final AssemblyLocationConnector Assembly Name線材名Wiring PointJACK20FCN001MIX20CN0532503405040JACK20FK101Note:Pass the connector assembly PS7

39、P Ref. 40 and connector assembly PS3P Ref. 50 through the inci-sion part of JACK20F circuit board Ref. 250.（注：PS7P束線 Ref. 40 PS3P束線 Ref. 50 JACK20F Ref. 250 切欠通。）Note:Fix the connector assembly PS7P Ref. 40 and connector assemblyRef. 50 with the cord holder.（注：PS7P束線 Ref. 40 PS3P束線 Ref. 50 束線止固定。）MG

40、206C-USB/MG206C18Macro picture around the CN003 of MIX20 circuit board. （MIX20CN003周辺拡大写真）340130140MIX20K052MIX20CN004MIX20K051MIX20CN003Note:Pass the connector assembly REAR10P Ref. 130 and connector as-sembly REAR15P Ref. 140 through the incision part of MIX20 circuitboard Ref. 340.（注：REAR10P束線 Re

41、f. 130 REAR15P束線 Ref. 140 、MIX20Ref. 340 切欠通。）Note:Fix the connector assembly REAR15P Ref.140 with the cord holder.（注：REAR15P束線 Ref. 140 束線止固定。）Note:Fix the connector assembly REAR10P Ref. 130 withthe cord holder.（注：REAR10P束線 Ref. 130 束線止固定。）2-2. Connect the ten (10) jumper wires of JACK20F circuit

42、board to the MIX20 circuit board.（JACK20F10本MIX20接続。）Note: Bend the jumper wires according to the picture below.（注： 下記写真従折曲。）Note: After bend, press the jumper wires so that their height from the MIX20 circuit boards component side become 15 mm or less.（注： 折曲後、MIX20面15mm以下上押。）MG206C-USB/MG206C194905

43、00 510410400420M9 Hexagon nut and washer（M9六角、）400430Top cover（）Top cover（）400400400400 Screw tighten (3rd)（締 （3番） ） 400 Screw tighten (2nd)（締 （2番） ） 400 Screw tighten (1st)（締 （1番） ） I DISASSEMBLY PROCEDURES （分解手順）1.Top Cover (Time required: 15 min.)1-1Remove the sixteen (16) fader knobs marked 490,

44、 two(2) fader knobs marked 500 and fader knob marked510. (Fig. 1)1-2Remove the fifteen (15) screws marked 400, twenty-one (21) screws marked 410, three (3) screws marked420, six (6) screws marked 430, thirty-seven (37) hex-agonal nuts and thirty-seven (37) washers. (Fig. 1)1-3The top cover can then

45、be removed. (Fig. 1)*When installing the top cover on the bottom caseassembly, tighten the screws in the order shown inFig. 1. (Fig. 1)1. （所要時間：15分）1-1490 FADER16個、 500 FADER2個、510 FADER外。 （Fig. 1）1-2400 15本、 410 21本、 420 3本、 430 6本、六角37個、37個外。 （Fig. 1）1-3外。 （Fig. 1） Ass y取付、Fig. 1示順序締。（Fig. 1）400:B

46、ind Head Tapping Screw-B 3x8 MFZN2B3 (WE774400) B+BIND410:Bind Head Tapping Screw-B 3x8 MFZN2B3 (WE774400) B+BIND420:Bind Head Screw 3x6 MFZN2B3 (WE878300) 小+BIND430:Bind Head Tapping Screw-B 3x8 MFZN2B3 (WE774400) B+BIND490:Fader Knob Black/L-Gray (V9664900) FADER500:Fader Knob Red/D-Gray (V9665000

47、) FADER510:Fader Knob White/Red (V9665100) FADER(Fig. 1)MG206C-USB/MG206C202.MIX20 Circuit Board and JACK20F CircuitBoard (Time required: 20 min.)2-1Remove the top cover. (See procedure 1.)2-2Disconnect the fourteen (14) connectors. (Fig. 2)2-3Remove the fourteen (14) screws marked 350. (Fig. 2)2-4R

48、elease the eight (8) hooks and remove the MIX20 cir-cuit board. (Fig. 2)2-5Remove the three (3) screws marked 300 and removethe JACK20F circuit board. (Fig. 2)*The buttons, knobs, knob black (WD942200), but-ton on assembly (WH455200) are not componentsof the MIX20 circuit board. When replacing the M

49、IX20circuit board, remove these components from theold circuit board and install them on the new circuitboard.2.MIX20、JACK20F（所要時間：20分）2-1外。 （1項参照）2-214所外。 （Fig. 2)2-3350 14本外。 （Fig. 2）2-48所外、MIX20外。 （Fig. 2）2-5300 3本外、JACK20F外。（Fig. 2） 、類、継手HPF （WD942200） 、ON Ass y （WH455200） MIX20構成部品。MIX20交換時、旧部品

50、取外新取付。350300JACK20FMIX20Hook（）Hook（）Priority Screw（優先） Hook（）350Hook（）Hook（）350350350300:Bind Head Tapping Screw-B 3x8 MFZN2W3 (WE774300) B+BIND350:Bind Head Tapping Screw-B 3x8 MFZN2W3 (WE774300) B+BIND(Fig. 2)MG206C-USB/MG206C213.JACK20R Circuit Board(Time required: 25 min.)3-1Remove the top cover