Yamaha-MSR400-spk-sm 维修电路原理图.pdf

《Yamaha-MSR400-spk-sm 维修电路原理图.pdf》由会员分享，可在线阅读，更多相关《Yamaha-MSR400-spk-sm 维修电路原理图.pdf（30页珍藏版）》请在收音机爱好者资料库上搜索。

1、SERVICE MANUALCONTENTS（目次）SPECIFICATIONS（総合仕様）.3PERFORMANCE GRAPH（特性図）.4PANEL LAYOUT（）.4CIRCUIT BOARD LAYOUT（）.5DIMENSIONS（寸法図）.5WIRING DIAGRAM（結線図）.5IC BLOCK DIAGRAM（IC 図）.6DISASSEMBLY PROCEDURES（分解手順）.6CIRCUIT BOARDS（基板図）.10INSPECTIONS（検査）.14PARTS LISTBLOCK DIAGRAM（）OVERALL CIRCUIT DIAGRAM（回路図）POW

2、ERED SPEAKERMSR400PA011777200505-86100HAMAMATSU, JAPANCopyright (c) Yamaha Corporation. All rights reserved. PDF-K185 05.05（ECF ： 無塩素系漂白） 使用。This document is printed on chlorine free (ECF) paper.RadioFans.CN 收音机爱 好者资料库MSR4002 WARNINGComponents having special characteristics are marked and must be re

3、placed with parts having specification equal to those originally installed.印商品、安全維持重要部品。交換場合、安全必指定部品使用 。IMPORTANT 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, a

4、nd more specifically Yamaha Products, are already known and understood by the users, and have therefore not been restated.WARNING : Failure to follow appropriate service and safety procedures when servicing this product may result in personal injury, destruction of expensive components and failure o

5、f the product to perform as specified. For these reasons, we advise all Yamaha product owners that all service required should be performed by an authorized Yamaha Retailer or the appointed service representative.IMPORTANT : This presentation or sale of this manual to any individual or firm does not

6、 constitute authorization certification, recognition of any applicable technical capabilities, or establish a principal-agent relationship of any form.The data provided is believed to be accurate and applicable to the unit(s) indicated on the cover. The research engineering, and service departments

7、of Yamaha are continually striving to improve Yamaha products. Modifications are, therefore, inevitable and changes in specification are subject to change without notice or obligation to retrofit. Should any discrepancy appear to exist, please contact the distributors Service Division.WARNING : Stat

8、ic discharges can destroy expensive components. Discharge any static electricity your body may have accumulated by grounding yourself to the ground bus in the unit (heavy gauge black wires connect to this bus).IMPORTANT :Turn the unit OFF during disassembly and parts replacement. Recheck all work be

9、fore 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 plastic (Where applicable) components may also contain traces of chemicals found by the California Health and Welfare Ag

10、ency (and possibly other entities) to cause cancer and/or birth defects or other reproductive harm.DO NOT PLACE SOLDER, ELECTRICAL/ELECTRONIC OR PLASTIC COMPONENTS IN YOUR MOUTH FOR ANY REASON WHAT SO EVER! Avoid prolonged, unprotected contact between solder and your skin! When soldering, do not inh

11、ale solder fumes or expose eyes to solder/flux vapor! If you come in contact with solder or components located inside the enclosure of this product, wash your hands before handling food.IMPORTANT NOTICE FOR THE UNITED KINGDOMConnecting the Plug and CordIMPORTANT.The wires in this main lead are colou

12、red 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 not correspond with the coloured markings identifying the terminals in your plug proceed as follows:The wire which is coloured GREEN-and-YELLOW

13、 must be connected to the terminal in the plug which is marked by the letter E or by the safety earth symbol or colored GREEN or GREEN-and-YELLOW. The 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 m

14、ust 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MSR4003 SPECIFICATIONS（総合仕様） General specificationsTypeBi-Amp 2-way bass reflex powered speakerSpeaker unitLF: 30 cm coneHF: 4.4 cm voice coil compression driverCrossover frequency.1.6 kHz (30 d

15、B/oct.)Frequency range.50 Hz-20 kHz (10 dB)Maximum output level .121 dB (1 m on axis)Directional angle .90(H)/40(V)Dimensions (W x H x D).406 x 652 x 351 mmWeight.23 kgTripod pole diameter.35 mmAccessories.Power cord (AC inlet type, 2.5 m)Owners manualOption.Stand TS-70B, TS-80(B)T and TS-90(B)T Amp

16、. unitMaximum output powerLF: 225 W at 500 Hz, THD=1%, RL=4 HF: 75 W at 5 kHz, THD=1%, RL=16 Input sensitivity.MIC/LINE: 36 dB/+4 dB*Input impedance.MIC/LINE: 10 kControlsLEVEL controlEQ control.LOW: 3 dB at 55 HzHIGH: 3 dB (HF)POWER switch.ON/OFFConnectors (all balanced)LINE input/output .XLR-3-31,

17、 XLR-3-32, PHONE(They are all connected in paralleland can be used as line outputs.)MIC input.XLR-3-31IndicatorsPOWER.Green LEDPEAK/LIMIT .Red LEDPower requirementU, T.120 V, 60 HzH, B, K, O.230 V, 50 HzA.240 V, 50 HzPower consumption.110 W* 0 dB=0.775 V一般仕様形式2 型 LF ： 30cm HF ： 4.4cm 周波数.1.6kHz （30d

18、B/oct.）再生周波数帯域.50Hz20kHz （10dB）最大出力音圧.121dB （軸上1m）指向角.90 （H） /40 （V）最大外形寸法 （WHD）.406652351mm重量.23kg適合三脚径.35mm付属品.電源（AC 型、2.5m）取扱説明書 . TS-70B、TS-80(B)T、 TS-90(B)T定格最大出力LF ： 225W at 500Hz、 THD=1%、 RL=4HF ： 75W at 5kHz、 THD=1%、 RL=16入力感度.MIC/LINE: 36dB/4dB*入力.MIC/LINE: 10k LEVEL EQ .LOW ： 3dB at 55HzHI

19、GH ： 3dB （HF）POWER .ON/OFF （型）LINE入出力.XLR-3-31、 XLR-3-32、 （3 接続、出力 使用。）MIC入力 .XLR-3-31POWER.緑色発光LEDPEAK/LIMIT.赤色発光LED電源.AC100V、 50/60Hz消費電力.110W*0dB 0.775VMSR4004 PERFORMANCE GRAPH（特性図） PANEL LAYOUT（） Rear Panel（）1 AC IN connector2 POWER switch3 INPUT/THRU connectors4 LEVEL control5 EQ control6 PEAK

20、/LIMIT indicator7 POWER indicator1 AC IN 端子2 POWER 3 INPUT/THRU 端子4 LEVEL 5 EQ 6 PEAK/LIMIT 7 POWER 10k1k10020FREQUENCY (Hz)RESPONSE (dB)3020100+1040+3-30+30-31237456MSR4005 CIRCUIT BOARD LAYOUT（） DIMENSIONS（寸法図） WIRING DIAGRAM（結線図）AMPMIXINPUTSWAC INLET1504063516521972-M8 depth 17Unit: mm（単位）（単位）CN2

21、03(4P)CN201 CN202(6P)CN103 CN102CN101 (5P)(5P)PowerTransformerCN107(3P)CN204CN205CN105(6P)CN104(6P)BLUEYELLOWREDBLACKTWEETERWOOFER1234AC. INCN106(3P)LNYELLOWBROWNBLUE/BLKRED/BLK+_LF+LF-HF+HF-+_GND1GND2（） （）HUM GNDAMPMIXINPUTINLETAC SWMSR4006分解手順 準備一部取外、軸長 必要。1. Assy ( 所要時間：5 分 )1-1.2112本外、Assy外。(図1)

22、2.( 所要時間：10 分 )2-1.18 18 本外、 外 。 ( 図 1)3. （所要時間：15 分 )3-1. 外。 (2 項参照 )3-2.14本外、 外 。(図1)3-3.6 4 本外、 外 。 ( 図 1)4.（所要時間：15 分）4-1. 外。 (2 項参照 )4-2.9 4 本外、 取付金具外。 ( 図 1)4-3.32 2 本 31 2 個外、取付金具 外 。 ( 図 1) DISASSEMBLY PROCEDURES PreparingA screwdriver with a long shaft is required to remove somescrews.1.Amp

23、lifier Assembly (Time required: about 5 minutes)1-1.Remove the twelve (12) screws marked 21. The amplifierassembly can be removed. (Fig.1)2.Rear Cabinet and Front Cabinet (Time required: about 10 minutes)2-1.Remove the eighteen (18) screws marked 18. The frontcabinet can then be removed from the rea

24、r cabinet. (Fig.1)3.Woofer (Time required: about 15 minutes)3-1.Remove the front cabinet from the rear cabinet. (Seeprocedure 2.)3-2.Remove the four (4) screws marked 1 and the front grille.(Fig.1)3-3.Remove the four (4) screws marked 6. Then the woofercan be removed. (Fig.1)4.Tweeter (Time required

25、: about 15 minutes)4-1.Remove the front cabinet from the rear cabinet. (Seeprocedure 2.)4-2.Remove the four (4) screws marked 9. Then the tweetercan be removed with the bracket. (Fig.1)4-3.Remove the two (2) screws marked 32 and the twowashers marked 31. Then the tweeter can be removedfrom the brack

26、et. (Fig.1) IC BLOCK DIAGRAM（IC 図） NJM2068L-D (AAX64880)INPUT: IC102MIX: IC103, IC104, IC105, IC106, IC107, IC108, IC109Operational AmplifierA+B+12345678OUTAINA+INAV+INBINBOUTB+V220mm or moreMSR4007161818181818212121211831 329931 32Tweeter（）17171717Fig.1（図 1）1: Bind Head Tapping Screw-B 4x12 MFZN2BL

27、 (AAX64800) 6: Pan Head Screw 5x25 MFZN2BL (AAX66970) 小小9: Bind Head Tapping Screw-B 5x25 MFZN2BL (AAX64820) 17: Bind Head Screw 5x20 MFZN2BL (AAX64790) 小 小18: Bind Head Tapping Screw-B 5x45 MFZN2BL (AAX64830) 21: Bind Head Tapping Screw-B 4x16 MFZN2BL (AAX64810) 31: Spring Washer (AAX66990) 32: Bin

28、d Head Screw 6x12 MFZN2BL (AAX64780) 小 小MSR40085.AMP/INPUT/MIX/SW/AC INLET ( 所要時間：7 分 )5-1. Assy 外。 (1 項参照 )5-2.各 下記手順外 。a) AMP ： 下表各 接続外、 外 。 ( 図 2)b) INPUT/MIX/SW/AC INLET ：下表外、各 接続外 。 ( 図 2、 写真 1)6.電源（所要時間：7 分）6-1. Assy 外。 （項参照）6-2.A18 本外、電源 外。（図）5.AMP/INPUT/MIX/SW/AC INLET Circuit Boards (Time r

29、equired: about 7 minutes each)5-1.Remove the amplifier assembly. (See procedure 1.)5-2.Each circuit boards should be removed in proper order asfollows:a) AMP circuit board: Disconnect the connectors, and thenremove the screws mentioned in the table below. (Fig.2)b) INPUT/MIX/SW/AC INLET circuit boar

30、ds:Remove the knobs and screws, and then disconnect theconnectors mentioned in the table below. (Fig.2, Photo.1)6.Power Transformer (Time required: about 7 minutes)6-1.Remove the amplifier assembly. (See procedure 1.)6-2.Remove the four (4) screws marked A18. The powertransformer can then be removed

31、. (Fig.2)PCB NameREF No.DescriptionQTYAMP Circuit BoardCN201/CN202/CN203/CN204/CN205ConnectorOne for each (total 5)A24Bind Head Sems Screw 3x12 MFZN2BL (AAX64760) 小13A1Bind Head Screw 3x6 MFZN2BL (AAX64740) 小5INPUT Circuit BoardCN101Connector1A16Phone Jack Nut (-) 1A14Bonding Tapping Screw-B 3x8 MFZ

32、N2BL (AAX64840) 4MIX Circuit BoardCN102/CN103/CN104/CN105ConnectorOne for each (total 4)A1Bind Head Screw 3x6 MFZN2BL (AAX64740) 小4SW Circuit BoardCN106/CN107ConnectorOne for each (total 2)A1Bind Head Screw 3x6 MFZN2BL (AAX64740) 小2AC INLET Circuit BoardCN106Connector1A1Bind Head Screw 3x6 MFZN2BL (

33、AAX64740) 小2A8Bind Head Tapping Screw-B 4x8 MFZN2BL (AAX64730) 1A13Bind Head Screw 3x10 MFZN2BL (AAX64750) 小2 There is a GND wire connected the MIX and INPUT circuit boards with solder. When removing the MIX or INPUT circuitboards, remove both of them simultaneously and remove solder on GND terminal

34、s. The MIX and INPUT circuit boards canthen be separeted. MIX INPUT 線付。 線付。 MIX INPUT 取外両方同時外、 端子付外。 取外両方同時外、 端子付外。MSR40097.（所要時間：13 分）7-1. 外。 （項参照）7-2.17 8 本外、 外。 （図 1）7.Handle (Time required: about 13 minutes)7-1.Remove the rear cabinet. (See procedure 2.)7-2.Remove the eight (8) screws marked 17

35、and then thehandles can then be removed. (Fig.1)-1.5V+1.5VGNDSGSIGREDBLKBLUEBLK-LF+LF+HF-HFCN101A13CN106AC INLETSWCN202A18A1CN107A14CN102A8A1CN201CN204A1CN205A24A24A1A16CN203speakerINPUTMIXAMPCN103CN105CN104Fig.2（図 2）A1: Bind Head Screw 3x6 MFZN2BL (AAX64740) 小 小A8: Bind Head Tapping Screw-B 4x8 MFZ

36、N2BL (AAX64730) A13: Bind Head Screw 3x10 MFZN2BL (AAX64750) 小 小A14: Bonding Tapping Screw-B 3x8 MFZN2BL (AAX64840) A16: Phone Jack Nut (-) A18: Bind Head Screw 4x8 MFZN2BL (AAX64770) 小 小A24: Bind Head Sems Screw 3x12 MFZN2BL (AAX64760) 小 小(-): Not available as spare parts(-): 用部品 準備。用部品 準備。Photo.1（

37、写真 1）A8MSR40010 CIRCUIT BOARDS（基板図） AMP Circuit Boardto MIX-CN103to MIX-CN104to TWEETER (HF+/HF)to WOOFER (LF+/LF)IDLING ADJ.IDLING ADJ.to MIX-CN105to TRANSFORMERComponent side（部品側）MSR40011Pattern side（側）MSR40012to AMP-CN201to AMP-CN204to AMP-CN205EQLEVELHUM GND WirePEAK/LIMITPOWERHIGHLOWLINE IN (PH

38、ONE)LINE OUT (XLR)LINE/MIC IN (XLR)Component side（部品側）Pattern side（側） MIX Circuit Board INPUT Circuit BoardComponent side（部品側）Pattern side（側）MSR40013 SW Circuit Board AC INLET Circuit Boardto AC INto TRANSFORMERPOWERComponent side（部品側）Pattern side（側）AC INComponent side（部品側）Pattern side（側）MSR40014 IN

39、SPECTIONS1.Measuring conditions1-1.Measuring voltage:AC 120 V, 60 Hz (U)AC 230 V, 50 Hz (H, B)AC 240 V, 50 Hz (A)AC 220 V, 60 Hz (K)AC 110 V, 60 Hz (T)AC 220 V, 50 Hz (O)1-2.Load resistance:LF: 4 / Power capacity 500 WHF: 16 / Power capacity 200 W1-3.LEVEL control setting:Center click position (+4 d

40、B)1-4.EQ LOW control setting:Center click position (0)1-5.EQ HIGH control setting:Center click position (0)1-6.Room temperature:244 2.Inspections2-1.Power on muting time:Check that the muting function is cancelled and the relay turns on in 31 seconds after the power switch is turned on.Also, check t

41、he POWER indicator lights up.2-2.Idling current adjustment:Adjust VR201 and VR202 so that the voltage between pins 1 and 2 of CN206 and CN207 becomes 10.2 mV respectively.2-3.General inspections:Measure the following items in condition given below, and check the following values are satisfied.2-4.Pr

42、otection circuit test:Apply DC+5 V (power supply output resistance = 10 k) between pins 1 and 2 of the connector CN209 and check that the relayturns off within 1 second. Also, check that it returns automatically within 10 seconds when the DC+5 V is shut off.ItemsConditionsValuesInputOutputTypicalLim

43、ited1Output powerLFLEVEL: Max.1% THD output230 W225 WHFLEVEL: Max.80 W75 W2Voltage gainLF42 dB, 500 Hz input, LEVEL: Max.26 dB261.5 dBHF34 dB, 5 kHz input, LEVEL: Max.29 dB291.5 dB3EQ characteristicLFEQ LOW: Min.(Ref.: 55 Hz, EQ LOW: Center)(Ref: The gain when the EQ LOW or HIGH is at the center cli

44、ck position as 0 dB)3 dB31 dBEQ LOW: Max.(Ref.: 55 Hz, EQ LOW: Center)+3 dB+31 dBHFEQ HIGH: Min.(Ref.: 15 kHz, EQ HIGH: Center)3 dB31 dBEQ HIGH: Max.(Ref.: 15 kHz, EQ HIGH: Center)+3 dB+31 dB4Frequency response characteristicLF55 Hz input (Ref.: 500 Hz)(Ref.: 1 W output)+8 dB+81 dB1 kHz input (Ref.:

45、 500 Hz)+1 dB+11 dB2 kHz input (Ref.: 500 Hz)8 dB82 dBHF 1 kHz input (Ref.: 6.5 kHz) (Ref.: 1 W output) 22.5 dB 22.53 dB2 kHz input (Ref.: 6.5 kHz) 4.5 dB 4.51 dB15 kHz input (Ref.: 6.5 kHz) +7.5 dB +7.52 dB5DC offsetLFwithout signal input8 mV820 mVHFwithout signal input10 mV1020 mV6S/N ratio(with A

46、-weight filter)LF500 Hz input, LEVEL: Max.225W output75 dB70 dBHF5 kHz input, LEVEL: Max.85 W output70 dB65 dB7Gain/Efficiency(Primary side power consumption)LF500 Hz input30 W output110 W110+10/30 WHF5 kHz input4 W output25 W2510 W8Noise level(with 20 Hz-20kHz filter)LFLEVEL: Min., grounded with tw

47、o 600 resistance1 mV1.7 mVHFLEVEL: Min., grounded with two 600 resistance1 mV1.2 mVMSR40015検査1.測定条件1-1.測定電圧 :AC100V、50/60Hz1-2.負荷抵抗 :LF：4 / 電力容量 500WHF：16 / 電力容量 200W1-3.LEVEL :位置（ 4dB）1-4.EQ LOW :位置（0）1-5.EQ HIGH :位置（0）1-6.室内温度 :24 4 2.検査2-1.時間 : ON 後、 3 1 秒 解除、 ON 確認。、 POWER 点灯 確認。2-2.電流調整 :CN206、

48、 CN207 1-2 間電圧 1 0.2mV VR201、 VR202 調整。2-3.一般検査 :以下項目下記条件下測定、 測定値下記満確認。2-4.保護回路 :CN209 1-2 間 DC 5V （電源出力抵抗 10k） 印加 、 1 秒以内 OFF 確認。 DC 5V 切 、 10 秒以内自動復帰 確認 。項目条件値入力出力標準値限界値1定格出力LFLEVEL：最大1THD 出力230W225WHFLEVEL：最大80W75W2LF 42dB、500Hz 入力、LEVEL：最大26dB26 1.5dBHF 34dB、5kHz 入力、LEVEL：最大29dB29 1.5dB3特性LFEQ L

49、OW：最小（基準：55Hz、EQ LOW：）（基準：EQ LOW HIGH 位置 0dB ） 3dB 3 1dBEQ LOW：最大（基準：55Hz、EQ LOW：） 3dB 3 1dBHFEQ HIGH：最小（基準：15kHz、EQ HIGH：） 3dB 3 1dBEQ HIGH：最大（基準：15kHz、EQ HIGH：） 3dB 3 1dB4周波数特性LF55Hz 入力（基準：500Hz）（基準：1W 出力） 8dB 8 1dB1kHz 入力（基準：500Hz） 1dB 1 1dB2kHz 入力（基準：500Hz） 8dB 8 2dBHF1kHz 入力（基準：6.5 kHz) （基準：1W

50、出力） 22.5dB 22 . 5 3dB2kHz 入力（基準：6.5 kHz) 4.5dB 4.5 1dB15kHz 入力（基準：6.5 kHz) 7.5dB 7.5 2dB5DC LF 入力 8mV 8 20mVHF入力 10mV 10 20mV6SN比（A使用）LF500Hz 入力、LEVEL：最大225W 出力75dB70dBHF5kHz 入力、LEVEL：最大85W 出力70dB65dB7利得 / 効率（一次側消費電力）LF500Hz 入力30W 出力110W110 10/ 30WHF5kHz 入力4W 出力25W25 10W8雑音（20Hz-20kHz使用）LFLEVEL：最小、6