Yamaha-MSR-400-Service-Manual电路原理图.pdf

《Yamaha-MSR-400-Service-Manual电路原理图.pdf》由会员分享，可在线阅读，更多相关《Yamaha-MSR-400-Service-Manual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 MANUAL CONTENTS（目次） SPECIFICATIONS（総合仕様）.3 PERFORMANCE GRAPH（特性図）.4 PANEL LAYOUT（）.4 CIRCUIT BOARD LAYOUT（）.5 DIMENSIONS（寸法図）.5 WIRING DIAGRAM（結線図）.5 IC BLOCK DIAGRAM（IC 図）.6 DISASSEMBLY PROCEDURES（分解手順）.6 CIRCUIT BOARDS（基板図）.10 INSPECTIONS（検査）.14 PARTS LIST BLOCK DIAGRAM（） OVERALL CIRCUIT D

2、IAGRAM（回路図） POWERED SPEAKER MSR400 PA 011777 200505-86100 HAMAMATSU, JAPAN Copyright (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 MSR400 2 WARNING Components having special characteristic

3、s are marked and must be replaced 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 procedure

4、s inherent to the industry, and 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 expe

5、nsive components and failure of 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

6、any individual or firm does not 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 engin

7、eering, and service departments 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

8、 Service Division. WARNING : Static 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 part

9、s 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 plastic (Where applicable) components may also contain traces of chemicals found by t

10、he California Health and Welfare Agency (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 y

11、our skin! When soldering, do not inhale 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 KINGDOM Connecting the Plug and Cord IMPORTAN

12、T.The wires in this main lead are coloured in accordance with the following code: GREEN-AND-YELLOW: EARTH BLUE: NEUTRAL BROWN: LIVE As 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:

13、 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 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 colour

14、ed 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 MSR400 3 SPECIFICATIONS（総合仕様） General specifications Type Bi-Amp 2-way bass reflex powered speaker Speaker unit LF: 30 cm cone HF: 4.4 cm voice coil

15、 compression driver Crossover frequency.1.6 kHz (30 dB/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 mm Weight.23 kg Tripod pole diameter.35 mm Accessories.Power cord (AC inlet type, 2.5 m)

16、Owners manual Option.Stand TS-70B, TS-80(B)T and TS-90(B)T Amp. unit Maximum output power LF: 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 k Controls LEVEL control EQ control.LOW: 3 dB at 55 Hz HIGH: 3 dB (HF) PO

17、WER switch.ON/OFF Connectors (all balanced) LINE input/output .XLR-3-31, XLR-3-32, PHONE (They are all connected in parallel and can be used as line outputs.) MIC input.XLR-3-31 Indicators POWER.Green LED PEAK/LIMIT .Red LED Power requirement U, T.120 V, 60 Hz H, B, K, O.230 V, 50 Hz A.240 V, 50 Hz

18、Power 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 （30dB/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=4 HF

19、 ： 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 55Hz HIGH ： 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-3-31 POWER.緑色発光LED PEAK/LIMIT.赤色発光LED 電源.AC100V、 50/60Hz 消費電力.110W *0dB 0.775V MSR400 4 PERFORMANCE GRAPH（特性図） P

20、ANEL LAYOUT（） Rear Panel（） 1 AC IN connector 2 POWER switch 3 INPUT/THRU connectors 4 LEVEL control 5 EQ control 6 PEAK/LIMIT indicator 7 POWER indicator 1 AC IN 端子 2 POWER 3 INPUT/THRU 端子 4 LEVEL 5 EQ 6 PEAK/LIMIT 7 POWER 10k1k10020 FREQUENCY (Hz) RESPONSE (dB) 30 20 10 0 +10 40 +3 -3 0 +3 0 -3 123

21、 7 4 5 6 MSR400 5 CIRCUIT BOARD LAYOUT （） DIMENSIONS（寸法図） WIRING DIAGRAM（結線図） AMP MIX INPUT SWAC INLET 150 406351 652 197 2-M8 depth 17 Unit: mm （単位）（単位） CN203 (4P) CN201 CN202 (6P) CN103 CN102 CN101 (5P) (5P) Power Transformer CN107 (3P) CN204 CN205 CN105 (6P) CN104 (6P) BLUE YELLOW RED BLACK TWEET

22、ERWOOFER 1 2 3 4 AC. IN CN106 (3P)L N YELLOWBROWN BLUE/BLK RED/BLK + _ LF+ LF- HF+ HF- + _ GND1 GND2 （） （） HUM GND AMP MIX INPUT INLETAC SW MSR400 6 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) 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

23、 。(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 Preparing A screwdriver with a long shaft is required to remove some screws. 1.Amplifier Assembly (Time required: about 5 minutes) 1-1.Remove the twelve

24、 (12) screws marked 21. The amplifier assembly 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 front cabinet can then be removed from the rear cabinet. (Fig.1) 3.Woofer (Time required: about 15 minutes) 3-1

25、.Remove the front cabinet from the rear cabinet. (See procedure 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 woofer can be removed. (Fig.1) 4.Tweeter (Time required: about 15 minutes) 4-1.Remove the front cabinet from the

26、 rear cabinet. (See procedure 2.) 4-2.Remove the four (4) screws marked 9. Then the tweeter can be removed with the bracket. (Fig.1) 4-3.Remove the two (2) screws marked 32 and the two washers marked 31. Then the tweeter can be removed from the bracket. (Fig.1) IC BLOCK DIAGRAM（IC 図） NJM2068L-D (AAX

27、64880) INPUT: IC102 MIX: IC103, IC104, IC105, IC106, IC107, IC108, IC109 Operational Amplifier A+B + 12345678 OUT A IN A +IN A V+IN B IN B OUT B +V 220mm or more MSR400 7 1 6 18 18 18 18 18 2121 212118 31 32 99 31 32 Tweeter （） 17 17 17 17 Fig.1（図 1） 1: Bind Head Tapping Screw-B 4x12 MFZN2BL (AAX648

28、00) 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: Bind Head

29、 Screw 6x12 MFZN2BL (AAX64780) 小 小 MSR400 8 5.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

30、 (Time required: about 7 minutes each) 5-1.Remove the amplifier assembly. (See procedure 1.) 5-2.Each circuit boards should be removed in proper order as follows: a) AMP circuit board: Disconnect the connectors, and then remove the screws mentioned in the table below. (Fig.2) b) INPUT/MIX/SW/AC INLE

31、T circuit boards: Remove the knobs and screws, and then disconnect the connectors 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 power transformer

32、 can then be removed. (Fig.2) PCB NameREF No.DescriptionQTY AMP Circuit Board CN201/CN202/CN203/ CN204/CN205 ConnectorOne for each (total 5) A24 Bind Head Sems Screw 3x12 MFZN2BL (AAX64760) 小 13 A1 Bind Head Screw 3x6 MFZN2BL (AAX64740) 小 5 INPUT Circuit Board CN101Connector1 A16 Phone Jack Nut (-)

33、1 A14 Bonding Tapping Screw-B 3x8 MFZN2BL (AAX64840) 4 MIX Circuit Board CN102/CN103/CN104/ CN105 ConnectorOne for each (total 4) A1 Bind Head Screw 3x6 MFZN2BL (AAX64740) 小 4 SW Circuit Board CN106/CN107ConnectorOne for each (total 2) A1 Bind Head Screw 3x6 MFZN2BL (AAX64740) 小 2 AC INLET Circuit B

34、oard CN106Connector1 A1 Bind Head Screw 3x6 MFZN2BL (AAX64740) 小 2 A8 Bind Head Tapping Screw-B 4x8 MFZN2BL (AAX64730) 1 A13 Bind 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 circuit boards, remove b

35、oth of them simultaneously and remove solder on GND terminals. The MIX and INPUT circuit boards can then 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。 MSR400 9 7.（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

36、 cabinet. (See procedure 2.) 7-2.Remove the eight (8) screws marked 17 and then the handles can then be removed. (Fig.1) -1.5V +1.5V GND SG SIG RED BLK BLUE BLK -LF +LF +HF -HF CN101 A13 CN106 AC INLET SW CN202 A18 A1 CN107 A14 CN102 A8 A1 CN201 CN204 A1 CN205 A24 A24 A1 A16 CN203 speaker INPUT MIX

37、AMP CN103 CN105 CN104 Fig.2（図 2） A1: Bind Head Screw 3x6 MFZN2BL (AAX64740) 小 小 A8: Bind Head Tapping Screw-B 4x8 MFZN2BL (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

38、) 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（写真 1） A8 MSR400 10 CIRCUIT BOARDS（基板図） AMP Circuit Board to MIX-CN103to MIX-CN104 to TWEETER (HF+/HF) to WOOFER (LF+/LF) IDLING ADJ. IDLING ADJ.to MIX-CN105to TRANSFORMER Compone

39、nt side（部品側） MSR400 11 Pattern side（側） MSR400 12 to AMP-CN201 to AMP-CN204 to AMP-CN205 EQ LEVEL HUM GND Wire PEAK/LIMIT POWER HIGHLOW LINE IN (PHONE) LINE OUT (XLR) LINE/MIC IN (XLR) Component side（部品側） Pattern side（側） MIX Circuit Board INPUT Circuit Board Component side（部品側） Pattern side（側） MSR400

40、 13 SW Circuit Board AC INLET Circuit Board to AC IN to TRANSFORMER POWER Component side（部品側）Pattern side（側） AC IN Component side（部品側）Pattern side（側） MSR400 14 INSPECTIONS 1.Measuring conditions 1-1.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)

41、AC 110 V, 60 Hz (T) AC 220 V, 50 Hz (O) 1-2.Load resistance:LF: 4 / Power capacity 500 W HF: 16 / Power capacity 200 W 1-3.LEVEL control setting:Center click position (+4 dB) 1-4.EQ LOW control setting:Center click position (0) 1-5.EQ HIGH control setting:Center click position (0) 1-6.Room temperatu

42、re:244 2.Inspections 2-1.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 the POWER indicator lights up. 2-2.Idling current adjustment: Adjust VR201 and VR202 so that the voltage between pins 1 and

43、 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.Protection circuit test: Apply DC+5 V (power supply output resistance = 10 k) between pins 1 and 2 of the connector CN2

44、09 and check that the relay turns off within 1 second. Also, check that it returns automatically within 10 seconds when the DC+5 V is shut off. ItemsConditionsValues InputOutputTypicalLimited 1Output powerLFLEVEL: Max.1% THD output230 W225 W HFLEVEL: Max.80 W75 W 2Voltage gainLF42 dB, 500 Hz input, LEVEL: Max.26 dB261.5 dB HF34 dB, 5 kHz input, LEVEL: Max.29 dB291.5 dB 3EQ characteristicLFEQ LOW: Min.(Ref.: 55 Hz, EQ LOW: Center)(Ref: