Yamaha MSP5A Powered Monitor Service Manual 电路图.pdf

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1、MSP5A 1 SERVICE MANUAL PA 011707 200401-30000 Copyright (c) Yamaha Corporation. All rights reserved. PDF-K733 03.12 HAMAMATSU, JAPAN CONTENTS SPECIFICATIONS. 3 DIMENSIONS. 4 PANEL LAYOUT. 5 CIRCUIT BOARD LAYOUT. 6 BLOCK DIAGRAM. 6 DISASSEMBLY PROCEDURE. 7 CIRCUIT BOARDS. 11 IC BLOCK DIAGRAM. 12 INSP

2、ECTIONS. 13 OVERALL CIRCUIT DIAGRAM PARTS LIST （目次） MSP5A （総合仕様） （寸法図） （） （） （） （分解手順） （基板図） （IC図） （検査） （総回路図） RadioFans.CN 收音机爱 好者资料库 MSP5A 2 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

3、 procedures inherent to the industry, and more specifically Yamaha Products, are already known and under- stood 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 per- sonal injury, destru

4、ction of expensive 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 thi

5、s manual to any individual or firm does not constitute authorization certifi- cation, recognition of any applicable technical capabilities, or establish a principal-agent relationship of any form. The data provided is belived to be accurate and applicable to the unit(s) indicated on the cover. The r

6、esearch engineering, 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

7、 distributors 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 disassem

8、bly 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 plastic (Where applicable) components may also contain traces of chemical

9、s 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 PLACE SOLDER, ELECTRICAL/ELECTRONIC OR PLASTIC COMPONENTS IN YOUR MOUTH FOR ANY REASON WHAT SO EVER! Avoid prolonged, unprotected contact between

10、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 located inside the enclosure of this product, wash your hands before handling food. WARNING Components having special characteristics are marked and

11、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。 IMPORTANT THE WIRES IN MAINS LEAD ARE COLOURED IN ACCORDANCE WITH THE FOLLOWING CODE: BLUE : NEUTRAL BROWN : LIVE As the colours of the wires in the mains lead of this apparatus may not

12、 correspond with the coloured markings identifying the terminals in your plug proceed as follows: 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

13、with the letter L or coloured RED. Making sure that neither core is connected to the earth terminal of the three pin plug. RadioFans.CN 收音机爱 好者资料库 MSP5A 3 SPECIFICATIONS（総合仕様） 総合仕様 形式. 2 型 周波数. 2.5kHz 再生周波数帯域 . 50Hz40kHz 最大出力音圧 . 101dB（軸上1m） 最大外形寸法 （W H D）. 169 279 222mm 重量. 7.5kg 部 LF:12cm （4、 防磁型）

14、 HF:2.5cm （6、 防磁型） 方式：型 内容積：6.3 部 定格最大出力 LF：40W at 400Hz、THD 0.02、RL 4 HF：27W at 10kHz、THD 0.02、RL 6 入力感度 Line 1 ：4dB/10k（XLR） Line 2 ： 10dB/10k（phone） S/N . 100dB（A Weighted） TRIM LOW ：4 （ 1.5dB、0dB、 1.5dB、 3dB at 60Hz） HIGH：3 （ 1.5dB、0dB、 1.5dB at 15kHz） Power ：On/Off VOL . 緑 LED 電源. AC100V、50/60H

15、z 消費電力 . 45W 付属品. （2 個）、取扱説明書、 保証書 General specifi cations Type.Bi-Amp 2-way Bass Refl ex Powered Speaker Crossover Frequency.2.5 kHz Frequency Range.50 Hz40 kHz Maximum Output Level.101 dB (1 m on Axis) Dimensiones (W H D) .169 279 222 mm Weight .7.5 kg Speaker unit Speaker Unit LF: 12 cm cone (4,

16、magnetic shielded) HF: 2.5 cm titanium dome (6, magnetic shielded) Enclosure Type: Bass Refl ex Volume: 6.3 Amp.unit Maximum Output Power LF: 40W at 400 Hz, THD= 0.02%, RL=4 HF: 27W at 10 kHz, THD= 0.02%, RL=6 Input Sensitivity/Impedance Line 1: +4 dB/10 k (XLR Blanced) Line 2: 10 dB/10 k (phone Unb

17、lanced) Signal to Noise Ratio. 100 dB (A Weighted) Controls TRIM switch LOW: 4 positions (+1.5 dB, 0 dB, 1.5 dB, 3 dB at 60 Hz) HIGH: 3 positions (+1.5 dB, 0 dB, 1.5 dB at 15 kHz) Power switch: On/Off VOL control Power Indicator.Green LED Power Requirement USA and Canada:AC120V, 60 Hz Europe: AC230V

18、, 50 Hz China: AC220V, 50Hz Korea: AC220V, 60Hz Others: AC240V, 50 Hz Power Consumption.60 W Accessories .Non-skid pads 2, Owners manual RadioFans.CN 收音机爱 好者资料库 MSP5A 4 DIMENSIONS Units: mm （単位） （寸法図） W: 169 H: 279 171.5 D: 222 20* 743.5 110* 6030 2-M5 (For mounting bracket * Non-skid pad positions.

19、（貼付位置） （用） ) MSP5A 5 PANEL LAYOUT（） 1 2 1 2 Power indicator VOL (Volume) control 3 4 5 3 4 5 POWER switch TRIM switches INPUT jacks POWER TRIM INPUT 端子 POWER VOL（） MSP5A 6 CIRCUIT BOARD LAYOUT（） HIGHLOW TRIM INPUT TRIM VOL LINE 1 AMP POWER AMP H.P.F L.P.F Tweeter （） （） Woofer LINE 2 BLOCK DIAGRAM（）

20、Tweeter Woofer Power Transformer () () （電源） MAIN 5/5 MAIN 4/5 MAIN 3/5 MAIN 1/5 MAIN 2/5 MSP5A 7 DISASSEMBLY PROCEDURE Fig.1 Fig.2 （分解手順） （図1） （図2） 1.（所要時間：約1 分） 1-1外。 （図1） 1-2110六角穴付頭4本外、 外 。 （図1） 2. Ass y（所要時間：約2 分） 2-113010本外、Assy外。 （図2） 1.Woofer (Time required: About 1 minute) 1-1Remove the spea

21、ker protector. (Fig. 1) 1-2Remove the four (4) cap screws marked 110. The woofer can then removed. (Fig. 1) 2.Amplifier Assembly (Time required: About 2 minutes) 2-1Remove the ten (10) screws marked 130. The amplifier assembly can then be removed. (Fig.2) 110: Cap Screw4.0X14 MFZN2BL (AAX52210) Fron

22、t view 110 60 Woofer （） Speaker protector （） 130 130 130 Rear view Amplifier assembly （Assy） 130: Bind Head Tapping Screw-P 5.0X20 MFZN2BL (AAX52220) 120: Bind Head Tapping Screw-P4.0X16 MFZN2BL (VA835700) 120 120 Rear view Tweeter （） Photo.1 (写真1) 3.Tweeter (Time required: About 3 minutes) 3-1Remov

23、e the amplifier assembly. (See procedure 2) 3-2Remove the four (4) screws marked 120. The tweeter can then be removed. (Photo. 1) 3.（所要時間：約3 分） 3-1Assy 外。 (2項参照) 3-2120 4 本外、外。 （写真1） （六角穴付頭P）（P） （P） MSP5A 8 4.（所要時間：約 3 分） 4-1Assy 外。 （項参照） 4-2A150B本外、外。 （写真2） 4.Power Transformer (Time required: About

24、 3 minutes) 4-1Remove the amplifier assembly. (See procedure 2) 4-2Remove the four (4) screws marked A150B. The power transformer can then be removed. (Photo. 2) A150B A150A A150A A151A A150B A150B A150B Front view Power transformer （） Base （台） Photo.2 (写真2) A150: Bind Head Tapping Screw-B4.0X10 MFZ

25、N2BL (EP600240) A151: Bonding Tapping Screw-B4.0X10 MFZN2Y (AAX52450) 5.MAIN 1/5, 2/5, 3/5 Circuit Boards (Time required: About 5 minutes each) 5-1Remove the amplifier assembly. (See procedure 2) 5-2Remove the three (3) screws marked A150A and screw marked A151A. The power transformer and base can t

26、hen be removed. (Photo. 2) 5-3MAIN 1/5, 2/5 Circuit Boards: 5-3-1Remove the two (2) screws marked A160 and the four (4) screws marked A170. The MAIN 1/5, 2/5 circuit boards can then be removed. (Photo. 3) 5-4MAIN 3/5 Circuit Board: 5-4-1Remove the four (4) screws marked A180A. The shield sheet can t

27、hen be removed. (Photo.3, 4) 5-4-2Remove the three (3) screws marked A180B, the nut marked A190, the washer marked A200. The MAIN 3/5 circuit board can then be removed. (Photo.3, 4) 5.MAIN 1/5、2/5、3/5 （所要時間：各約5 分） 5-1Assy 外。 （2 項参照） 5-2A150A3本A151A1本外、 台外。 （写真2） 5-3MAIN 1/5, 2/5: 5-3-1A1602本A1704本外、

28、 MAIN 1/5、2/5 外。 （写真3） 5-4MAIN 3/5: 5-4-1A180A4本外、 板外。 （写真3、4） 5-4-2A180B 3 本A190特殊六角 A200特殊座金外、MAIN 3/5外 。 （写真3、4） （B） （B） MSP5A 9 6.MAIN 4/5 （所要時間：約 2 分） 6-1Assy 外。 （項参照） 6-260外、 MAIN 4/5外。 （図1、 写真5、 写真6） 7.MAIN 5/5 （所要時間：約 2 分） 7-1Assy 外。 （2項参照） 7-21402本外、 外。（写真7） 6.MAIN 4/5 Circuit Board (Time r

29、equired: About 2 minutes) 6-1Remove the amplifier assembly. (See procedure 2) 6-2Remove the knob marked 60 and the nut. The MAIN 4/5 circuit board with the volume can then be removed. (Fig.1, Photo. 5, 6) 7.MAIN 5/5 Circuit Board (Time required: About 2 minutes) 7-1Remove the amplifier assembly. (Se

30、e procedure 2) 7-2Remove the two (2) marked 140. The MAIN 5/5 circuit board can then be removed. (Photo. 7) A160: Bind Head Screw3.0X14 MFZN2BL (VH610100) A170: Bind Head Screw3.0X6 MFZN2BL (EG330360) A180: Bonding Tapping Screw-B 3.0X10 MFZN2BL (VQ049800) A190: Hexagonal Nut12.0 14X2 MFC2BL (VD7941

31、00) A200: Flat Washer12S MFC2BL (VB004700) 140: Bind Head Tapping Screw-P3.5X8 ZMCBL (VD277800) A160 A170 A170 A180A A190A200 A180B A180B Front view Bottom view Shield sheet （板） MAIN 1/5 MAIN 2/5 MAIN 3/5 A170 Photo.3 (写真3) Photo.4 (写真4) Nut （） Volume （） MAIN 4/5 MAIN 5/5 140 Photo.5 (写真5)Photo.6 (写

32、真6) Photo.7 (写真7) （小） （小） （B） （特殊六角） （特種平座金） （P） MSP5A 10 8.Heat Sink (Time required: About 6 minutes) 8-1Remove the amplifier assembly. (See procedure 2) 8-2Remove the power transformer and base. (See procedure 5-2) 8-3Remove the MAIN 1/5, 2/5 circuit board. (See procedure 5-3) 8-4Remove the eight

33、(8) screws marked A150C and the two (2) screws marked A151B. The heat sink can then be removed. (Photo. 8) 8.（所要時間：約6 分） 8-1Assy 外。 （2 項参照） 8-2台外。 （5-2 項参照） 8-3MAIN 1/5、2/5 外。 （5-3 項参照） 8-4A150C8本A151B2本外、 外。 （写真 8） A150: Bind Head Tapping Screw-B4.0X10 MFZN2BL (EP600240) A151: Bonding Tapping Screw

34、-B4.0X10 MFZN2Y (AAX52450) （B） （B） 9.Power Switch (Time required: About 2 minutes) 9-1Remove the amplifier assembly. (See procedure 2) 9-2Power switch is removed pressing down claw. (Photo. 9) 9.POWER （所要時間：約 2 分） 9-1Assy 外。 （2 項参照） 9-2押POWER外。 （写真 9） A151B A150C A150CA150C A151B Front view Photo.8

35、(写真8) Claw （） Power switch （POWER） Photo.9 (写真9) MSP5A 11 to MAIN 4/5-CN108 to transformer AC Cord (K2 , K3) to MAIN 1/5-CN106 to Power SW LINE1LINE2HIGH TRIM LOW Component side MAIN 3/5 Circuit Board Component side CIRCUIT BOARDS MAIN 1/5 , MAIN 2/5 Circuit Board （部品側） （部品側） to Transfomer to MAIN 5

36、/5-CN206 to SPEAKER (Tweeter) to SPEAKER (woofer) to MAIN 3/5-CN106 MAIN 2/5 MAIN 1/5 DF329078 2(F) （基板図） MSP5A 12 MAIN 4/5 Circuit BoardMAIN 5/5 Circuit Board Component side Component side NJM4560D(IG040000) Dual Operational Amplifier IC101 , 102, 201 IC BLOCK DIAGRAM Output A Inverting Input A Non

37、-Inverting Input A DC Voltage Supply DC Voltage Supply Output B Inverting Input B Non-Inverting Input B 1 2 3 4 8 7 6 5 -+ -+ -V +V （部品側） （部品側） （IC図） to MAIN 3/5-CN103 VOLUME to MAIN 1/5-CN201 DF329078 (F) MSP5A 13 Measuring Voltage測定電圧AC100V 50/60Hz (J) AC120V 60Hz (U/C) AC240V 50Hz (A) AC230V 50Hz

38、 (B) AC230V 50Hz (H) AC120V 60Hz (V) AC230V 50Hz (W) AC220V 60Hz (K) Load負荷LF 4 HF 6 LEVEL VR VRMAX Tone-control SW SWHIGH SW, LOW SW: 0 position. 1. Electric performance INSPECTIONS（検査） LimitItemOutput ConditionsInput Conditions 1 2 3 4 Output Power （項目） （定格出力） （利得） （周波数特性） （ 特性） （入力条件）（出力条件）（限界値）

39、INPUT1 400HzLF: 24.2dBu OUTPUT REF: LF OUTPUT 1KHz 1W LF SP-OUT REF: LF OUTPUT LOW SW: 0 REF: HF OUTPUT HIGH SW: 0 LOW = -2 REF: 60Hz LOW = -1 REF: 60Hz LOW = +1 REF: 60Hz HIGH = -1 REF: 15KHz HIGH = +1 REF: 15KHz INPUT1 HIGH SW: 0 LOW SW: 0 20Hz-15 2dB REF: LF OUTPUT 1KHz 1W LF SP-OUT60Hz+6 1dB REF

40、: LF OUTPUT 1KHz 1W LF SP-OUT400Hz+1 0.7dB +3 1.5dB -1.5 1dB +1.5 1dB -1.5 1dB +1.5 1dB REF: LF OUTPUT 1KHz 1W LF SP-OUT2KHz0 0.5dB HF SP-OUT-19 3dB Frequency Response Tone-control Characteristic No. GAIN 0.02% INPUT1 10KHzHF: 24.2dBu OUTPUT0.02% INPUT1 0dBu 400Hz LF SP-OUT 20dBu 2dB INPUT2 -14dBu 4

41、00Hz20dBu 2dB REF: LF OUTPUT 1KHz 1W HF SP-OUT20Hz+1.5 1dB REF: LF OUTPUT 1KHz 1W LF SP-OUT4KHz-14.5 2dB HF SP-OUT-3.7 1.2dB （電気性能） MSP5A 14 2. Muting operation The pop noise which appears between the time of the relay when making a power switch into ON/OFF of operation and SP terminal checks that i

42、t is the range of the following table for LF and HF. （ON/OFF時動作時間、SP端子間現LF、HF共下表範 囲確認。 ） 3. Protection circuit operation When DC+3V are impressed to the base of Q201 through 2.2k ohm, it checks that a relay is turned off immediately. （Q201 2.2k介 DC+3V 印加時即、OFF 事確認。 ） When DC-3V are impressed to the

43、base of Q202 through 2.2k ohm, it checks that a relay is turned off immediately. （Q202 2.2k介 DC-3V 印加時即、OFF 事確認。 ） Noise output voltage LF, HF SP-OUT INPUT Relay operation time POWER SWITCH Non-signal （無信号） （動作時間） （出力電圧） OFF ON3.0 1.5 sec +1.5 -1.0 0.1Vp-p ON OFF1.0 sec0.1Vp-p 5 6 7 （残留雑音） LEVEL VR

44、= MIN. HIGH SW: 0 LOW SW: 0 LF SP-OUT DIN AUDIO Filter HF SP-OUT DIN AUDIO Filter -70dBu -70dBu Noise level Residual Noise LEVEL VR = MAX. HIGH SW: 0 LOW SW: 0 LF SP-OUT DIN AUDIO Filter -70dBu MAX. NOISE No SignalHF SP-OUT LF SP-OUT 50mV DC VOLTAGE (Note): 0dBu = 0.775V （Muting 動作） （保護回路動作） 1 2 3 4

45、 5 6 7 8 9 10 11 13 12 ABCDEFGHIJKLMNOP MSP5A MSP5A OVERALL CIRCUIT DIAGRAM KEC-92341-2 OP AMP OPAMP LINE1 LINE2 OPAMP OPAMP OPAMP LOWHIGH TRIM REGULATOR-15V REGULATOR+15V POWERAMP OPAMP OPAMP SPEAKER 2.5cm6 SPEAKER VOL. 12cm440W AMPOP POWER TRANSFORMER MODELAC Cord J U/C A B H V W K AAX52380 AAX523

46、90 AAX52400 AAX52410 AAX52400 AAX52390 AAX52400 AAX52420 1.6A250V 1.6A250V T630mAL 250V T630mAL 251V T630mAL 252V 1.6A250V T630mAL 254V T630mAL 253V AAX52600 AAX52610 AAX52630 AAX52620 AAX52620 AAX52610 AAX52620 AAX52640 F101TRANS AC100V 50/60Hz AC120V 60Hz AC240V 50Hz AC230V 50Hz AC230V 50Hz AC120V

47、 60Hz AC230V 50Hz AC220V 60Hz POWER SUPPLY REGULATOR +15V NJM78M15FA(XJ603A00) 2: INPUT 3 3: COMMON 21 REGULATOR -15V NJM79M15FA(XG505A00) 1: OUTPUT 2: COMMON2 3 1 3: INPUT 1: OUTPUT ZENER DIODE Cathode Anode MTZ J 24.0C(VG442600) (VD631600) Cathode DIODE Anode 1SS133,176,HSS104 DIODE STACK 4.0A D3SBA60(V8151400) 0.1u R232C234