Yamaha MSP7 Powered Monitor Service Manual 电路图.pdf

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1、SERVICE MANUAL SPECIFICATIONS （総合仕様） .3 DIMENSIONS （寸法図）.4 PANEL LAYOUT （） .5 CIRCUIT BOARD LAYOUT （）.6 DISASSEMBLY PROCEDURES （分解手順） .7 CIRCUIT BOARDS （基板図） .11 INSPECTIONS （検査） .16 BLOCK DIAGRAM （） .18 CIRCUIT DIAGRAM （回路図） .19 PARTS LIST I CONTENTS （目次） PA011845 Copyright (c) Yamaha Corporation.

2、All rights reserved. 06.11 HAMAMATSU, JAPAN 200612-66150 （ECF：無塩素系漂白）使用。 RadioFans.CN 收音机爱 好者资料库 MSP7 STUDIO 2 IWARNING Components having special characteristics are marked and must be replaced with parts having specification equal to those originally installed. 印部品、安全維持重要部品。交換場合、安全必指定部品使用。 IMPORTAN

3、T 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 understood by the users, and have therefore not been

4、 restated. WARNING:Failure to follow appropriate service and safety 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 Yamaha product owners that all service

5、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 constitute authorization, certification, recognition of any applicable technical capabilities, or establish a p

6、rincipal-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 of Yamaha are continually striving to improve Yamaha products. Modifications are, therefore, inevitable and ch

7、anges in specifica- tion are subject to change without notice or obligation to retrofit. Should any discrepancy appear to exist, please contact the distributors Service Division. WARNING:Static discharges can destroy expensive components. Discharge any static electricity your body may have accumulat

8、ed 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 before you apply power to the unit. WARNING: CHEMICAL CONTENT NOTICE! The solder used in the production of this

9、 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 Agency (and possibly other entities) to cause cancer and/or birth defects or other reproductive harm. DO NOT P

10、LACE 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 inhale solder fumes or expose eyes to solder/flux vapor! If you come in contact with solder or components loca

11、ted inside the enclosure of this product, wash your hands before handling food. IMPORTANT NOTICE FOR THE UNITED KINGDOM Connecting the Plug and Cord WARNING:THIS APPARATUS MUST BE EARTHED IMPORTANT.The wires in this mains lead are coloured in accordance with the following code: GREEN-AND-YELLOW:EART

12、H 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: The wire which is coloured GREEN and YELLOW must be connected to the terminal in the plug which is marke

13、d by the letter E or by the safety earth symbol or colored GREEN or colored 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 must be connected to the terminal which is marked with

14、 the letter L or coloured RED. RadioFans.CN 收音机爱 好者资料库 MSP7 STUDIO 3 I SPECIFICATIONS （総合仕様） 総合仕様 形式 .2 周波数. 2.5 kHz LF：30 dB/oct、HF：30 dB/oct 再生周波数帯域.45 Hz40 kHz （-10 dB） 最大出力音圧 . 106 dB、1 m on Axis 最大外形寸法 （WHD） .218 x 330 x 235 mm 質量 .12.2 kg 防磁型 . Yes 部 LF . 16 cm （防磁型） HF . 2.5 cm （防磁型） 方式 . 型 材

15、質 .PP 部 定格最大出力* . LF：80 W THD = 0.05 %、RL = 4 HF：50 W THD = 0.05 %、RL = 6 S/N、IHF-A filter . 99 dB、LEVEL = Max. 入力感度XLR-3-31 .+4 dBu、LEVEL = Center -6 dBu、LEVEL = Max. 入力端子、. XLR-3-31 （balanced） 、10 k .31 Positions Detent type VR （Min. = - Attenuation） LOW CUT . FLAT / 80 Hz （12 dB/oct） / 100 Hz （12

16、 dB/oct） HIGH TRIM .+1.5/0/-1.5 dB at 15 kHz LOW TRIM . +1.5/0/-1.5/-3 dB at 45 Hz POWER switch . ON/OFF LED .緑色：Power On 赤：Clipping 消費電力. 100 W 電源 長 . 2.5 m 付属品 電源、脚 （2個） General Specifications Type . Biamp 2-way Powered Speaker Crossover Frequency . 2.5 kHz LF: 30 dB/oct, HF: 30 dB/oct Overall Fre

17、quency Response . 45 Hz - 40 kHz (-10 dB) Maximum Output Level. 106 dB, 1 m on Axis Dimensions (W x H x D) .218 x 330 x 235 mm (8-9/16” x 13” x 9-1/4”) Weight .12.2 kg Magnetic Shielding .Yes Speaker Section Components LF .6.5” cone HF. 1.0” dome EnclosureType. Bass-Reflex Material .PP Amplifier Sec

18、tion Output Power*. LF: 80 W THD = 0.05 %, RL = 4 HF: 50 W THD = 0.05 %, RL = 6 S/N, IHF-A filter . 99 dB, LEVEL = Max. Input Sensitivity XLR-3-31. +4 dBu, LEVEL = Center -6 dBu, LEVEL = Max. Input Connectors, Impedance XLR-3-31 (balanced), 10 k ControlsLEVEL control . 31 Positions Detent type VR (M

19、in. = - Attenuation) LOW CUT switch.FLAT / 80 Hz (12 dB/oct) / 100 Hz (12 dB/oct) HIGH TRIM. +1.5/0/-1.5 dB at 15 kHz LOW TRIM.+1.5/0/-1.5/-3 dB at 45 Hz POWER switch. ON/OFF IndicatorsLED .Green: Power On Red: Clipping Power Consumption. 100 W AC Code Length . 2.5 m Accessories AC cord x 1, Non-ski

20、d pads x 2 *These specifications apply to rated power supplies of 120, 230 and 240 V. *規格値定格電圧100 V供給時適用。 RadioFans.CN 收音机爱 好者资料库 MSP7 STUDIO 4 218 (8-9/16) 160* 20* 330 (13)35120 235 (9-1/4) * Non-skid pad positions. （脚貼付位置） (For mounting bracket（用）) 2-M8 I DIMENSIONS （寸法図） Unit: mm 単位：mm MSP7 STUD

21、IO 5 I PANEL LAYOUT （） Front Panel （） 1 2 3 4 5 6 7 8 POWER indicator POWER switch AC IN connector LOW TRIM switch HIGH TRIM switch LOW CUT switch INPUT connector LEVEL control 5 2 3 4 7 8 6 1 Rear Panel （） 1 2 3 4 5 6 7 8 POWER POWER AC IN端子 LOW TRIM HIGH TRIM LOW CUT INPUT端子 LEVEL MSP7 STUDIO 6 I

22、CIRCUIT BOARD LAYOUT （） ? ? （電源） ? ? ? ? ? （） ? （） MSP7 STUDIO 7 I DISASSEMBLY PROCEDURE （分解手順） Fig. 1 （図 1） Fig. 2 （図 2） 3.Tweeter (Time required: About 3 minutes) 3-1Remove the rear panel assembly. (See procedure 2) 3-2Remove the four (4) screws marked A. The tweeter can then be removed. (Fig. 3)

23、1. （所要時間：約1分） 1-1220 6角穴付4本外、 外。 （図 1） 2.Ass y （所要時間：約2分） 2-1230 12本 260 12個 外、Ass y外。 （図 2） 230:Bind Head Tapping Screw-P 5x25 (WJ286300) P 260:Spring Washer M5xM8.9xt1.0 (WJ478800) ? ? （） ? ? （） ? Rear Panel Assembly （Assy） 230, 260 230, 260230, 260 260 230 1.Woofer (Time required: About 1 minute)

24、 1-1Remove the four (4) hexagonal socket screws marked 220. The woofer and woofer ring can then be removed. (Fig. 1) 2.Rear panel Assembly (Time required: About 2 minutes) 2-1Remove the twelve (12) screws marked 230 and twelve (12) spring washers marked 260. The rear panel assembly can then be remov

25、ed. (Fig. 2) 3. （所要時間：約3分） 3-1Ass y外。 （2項参照） 3-2A 4本外、外。 （図 3） 220:Hexagonal Socket Tapping Screw-P 4x20 (WG341100) 6角 穴付P Fig. 3 （図 3） ? ? ? ? ? ? （） ? ? MSP7 STUDIO 8 G G F G AMP Fig. 6 （図 6） ? ? ? （電源）? ? ? ? ? ? ? ? ? Fig. 4 （図 4）Fig. 5 （図 5） Transformer Bracket （金具） D D E D 4.Power Transformer,

26、 TRANS Circuit Board (Time required: About 3 minutes) 4-1Remove the rear panel assembly. (See procedure 2) 4-2Remove the three (3) screws marked B and screw marked C. The power transformer with TRANS circuit board can then be removed. (Fig. 4) 4-3Unsolder the power transformer mounting solder (9 lo-

27、 cations) and separate the power transformer from the TRANS circuit board. *The power transformer is not a component of the TRANS circuit board. 4.電源、TRANS （所要時間：約3分） 4-1Ass y外。 （2項参照） 4-2B 3本、 C 外、電源 TRANS外。 （図 4） 4-3電源取付部分 （9所） 外、電源 TRANS分離。 電源TRANS構成部品 。 5AMP Circuit Board, INPUT Circuit Board (T

28、ime required: About 5 minutes each) 5-1Remove the rear panel assembly. (See procedure 2) 5-2Remove the three (3) screws marked B and screw marked C. The power transformer can then be removed. (Fig. 4) 5-3Remove the five (5) screws marked D and screw marked E. The transformer bracket can then be re-

29、moved. (Fig. 5) 5-4AMP Circuit Board: 5-4-1Remove the two (2) screws marked F and the four (4) screws marked G. The AMP circuit board can then be removed. (Fig. 6) 5AMP、INPUT （所要時間：各約5分） 5-1Ass y外。 （2項参照） 5-2B 3本 C 外、電源外 。 （図 4） 5-3D 5本 E 外、金具外 。 （図 5） 5-4AMP： 5-4-1 F 2本 G 4本外、AMP外 。 （図 6） MSP7 STUD

30、IO 9 240A/B:Bonding Tapping Screw-B 3x8 (WJ286400) B 250:Bind Head Tapping Screw-B 3x12 (WJ286600) B Fig. 7 （図 7） 250 250240A 240A240B Volume Knob, Hexagonal Nut and Washer （、6角、） Volume Knob （） Hexagonal Nut （6角） Washer （） 250 240B ? ? （） Fig. 8 （図 8） ? ? （） ? Fig. 9 （図 9） 6.LED Circuit Board (Time

31、 required: About 2 minutes each) 6-1Remove the rear panel assembly. (See procedure 2) 6-2Remove the two (2) screws marked H. The LED circuit board can then be removed. (Fig. 10) 6.LED （所要時間：約2分） 6-1Ass y外。 （2項参照） 6-2H 2本外、LED外。 （図 10） 5-5INPUT： 5-5-1、6角、外。 （図 7） 5-5-2 250 5本外、外。 （図 7、8） 5-5-3 240A 4

32、本外、外 。 （図 7、9） 5-5-4 240B 3本外、INPUT外。 （図 7、9） 5-5INPUT Circuit Board: 5-5-1Remove the volume knob, hexagonal nut and washer. (Fig. 7) 5-5-2Remove the five (5) screws marked 250. The mold case can then be removed. (Fig. 7) 5-5-3Remove the four (4) screws marked 240A. The shield bracket can then be re

33、moved. (Fig. 7) 5-5-4Remove the three (3) screws marked 240B. The INPUT circuit board can then be removed. (Fig. 7) Fig. 10 （図 10） A LED MSP7 STUDIO 10 8.POWER （所要時間：約2分） 8-1Ass y外。 （2項参照） 8-2INPUT外。 （5-5項参照） 8-3押POWER外。 （図 12） 8.Power Switch (Time required: About 2 minutes) 8-1Remove the rear panel

34、 assembly. (See procedure 2) 8-2Remove the INPUT circuit board. (See procedure 5-5) 8-3Press the claw to remove the power switch. (Fig. 12) Fig. 11 （図 11） ? ? （） ? ? ? ? ? ? ? ? ? ? ? ? Power Switch （POWER） Claw （） Claw （） Fig. 12 （図 12） 7.Heat Sink (Time required: About 6 minutes) 7-1Remove the rea

35、r panel assembly. (See procedure 2) 7-2Remove the power transformer and the bracket trans. (See procedure 5-2, 5-3) 7-3Remove the AMP circuit board. (See procedure 5-4) 7-4Remove the eight (8) screws marked I and screw marked J. The heat sink can then be removed. (Fig. 11) *Pull the heat sink lightl

36、y away from the rear panel to remove it. 7. （所要時間：約6分） 7-1Ass y外。 （2項参照） 7-2電源金具外。 （5-2、5-3項参照） 7-3AMP外。 （5-4項参照） 7-4I 8本 J 外、外 。 （図 11） 軽力加、容易外 。 Reverse side of rear panel （裏面） MSP7 STUDIO 11 CONTENTS （目次） AMP Circuit Board.12 INPUT Circuit Board.14 TRANS Circuit Board .15 LED Circuit Board .15 I

37、CIRCUIT BOARDS （基板図） MSP7 STUDIO 12 to INPUT CN102 to LED CN207 TWEETER to TRANS CN202B WOOFER Component side （部品側） AMP Circuit Board MSP7 STUDIO 13 AMP Circuit Board Pattern side （側） MSP7 STUDIO 14 to AMP CN102B to Power Transformer to Power SW INPUTHIGH TRIMLOW TRIMLOW CUT +1.5dB 0 -1.5dB 100Hz 80

38、Hz FLAT +1.5dB -1.5dB 0dB -3dB MIN-6dBu LEVEL AC INLET INPUT Circuit Board Component side （部品側） Pattern side （側） MSP7 STUDIO 15 to AMP CN201 to AMP CN202 to INPUT CN104 POWER TRANS Circuit Board LED Circuit Board Component side （部品側）Pattern side （側） Component side （部品側）Pattern side （側） MSP7 STUDIO 1

39、6 Measuring Voltage測定電圧AC100 V, 50/60 Hz (J) AC120 V, 60 Hz (U, C, T) AC240 V, 50 Hz (A) AC230 V, 50 Hz (B) AC230 V, 50 Hz (H) AC230 V, 60 Hz (K) AC230 V, 50 Hz (O) Load負荷LF 4 HF 6 LEVEL VR VRMAX. Tone-control SW SWHIGH TRIM, LOW TRIM: 0 position, LOW CUT: FLAT (NOTE): 0 dBu = 0.775 V 1. Electric pe

40、rformance （電気性能） I INSPECTIONS （検査） INPUT CONDITIONS （入力条件） Output Power （定格出力） GAIN （利得） Frequency Response （周波数特性） Tone-control Characteristic （特性） Noise Level Residual Noise （残留雑音） MAX. Noise DC Voltage ITEM （項目） OUTPUT CONDITIONS （出力条件） 20 Hz 60 Hz 400 Hz 2 KHz 4 KHz 20 KHz LF: 80 W (27.3 dBu) O

41、UTPUT HF: 50 W (27.0 dBu) OUTPUT DIN AUDIO Filter LF SP-OUT 0.05 % 0.05 % 27.3 dBu 2 dB -21.0 3 dB +6 2 dB +2.5 2 dB +3 2 dB -12.5 3 dB -23 3 dB -2 2 dB +4.5 2 dB -3 1.5 dB -1.5 1 dB +1.5 1 dB -1.5 1 dB +1.5 1 dB -3 2 dB -3 2 dB -60 dBu -60 dBu -60 dBu -60 dBu 50 mV LIMIT （限界値） REF: LF OUTPUT 1 KHz 1 W REF: LF OUTPUT 1 KHz 1 W REF: LF OUTPUT 1 KHz 1 W REF: LF