Yamaha-AU670-int-sm 电路图 维修手册.pdf

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1、P.O.Box 1, Hamamatsu, Japan SERVICE MANUAL 101 3 5 6 16.04 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, and more specifi cally Yamaha Products, are al

2、ready 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 of the product to perform as specifi ed. For

3、 these reasons, we advise all Yamaha product owners that any service required should be performed by an authorized Yamaha Retailer or the appointed service representative. IMPORTANT: The presentation or sale of this manual to any individual or fi rm does not constitute authorization, certifi cation

4、or recognition of any applicable technical capabilities, or establish a principle-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 t

5、o improve Yamaha products. Modifi cations are, therefore, inevitable and specifi cations are subject to change without notice or obligation to retrofi t. Should any discrepancy appear to exist, please contact the distributors Service Division. WARNING: Static discharges can destroy expensive compone

6、nts. Discharge any static electricity your body may have accumulated by grounding yourself to the ground buss in the unit (heavy gauge black wires connect to this buss). IMPORTANT: Turn the unit OFF during disassembly and part replacement. Recheck all work before you apply power to the unit. Copyrig

7、ht (c) Yamaha Corporation All rights reserved. This manual is copyrighted by Yamaha and may not be copied or redistributed either in print or electronically without permission. Note: When accepting a repair order from the user, it is recommended to receive the A-670/A-U670 and CD- NT670/CD-NT670D as

8、 a set for the repair work. MCR-Nx70/MCR-Nx70DMICRO COMPONENT SYSTEM NS-BP401/NS-BP301 A-U670/A-670/A-U671INTEGRATED AMPLIFIER SPEAKERS CONTENTS TO SERVICE PERSONNEL .2 SYSTEM COMPOSITION / 構成 .3 FRONT PANELS .5 REAR PANELS .7 REMOTE CONTROL PANEL .12 SPECIFICATIONS / 参考仕様 .12 INTERNAL VIEW .15 SERV

9、ICE PRECAUTIONS / 時注意事項 .16 DISASSEMBLY PROCEDURES / 分解手順 .17 SELF-DIAGNOSTIC FUNCTION / （自己診断機能） .19 IC DATA .28 PIN CONNECTION DIAGRAMS .31 BLOCK DIAGRAM .33 WIRING DIAGRAMS .34 PRINTED CIRCUIT BOARDS .36 SCHEMATIC DIAGRAMS .41 REPLACEMENT PARTS LIST .45 REMOTE CONTROL .68 This service manual is f

10、or the A-670/A-U670/A-U671/NS-BP401/NS-BP301. For service manual of the CD-NT670/CD- NT670D, please refer to the following publication numbers: CD-NT670/CD-NT670D: 101353 A-U670/A-670/A-U671/ NS-BP401/NS-BP301 RadioFans.CN 收音机爱 好者资料库 1. Critical Components Information Components having special chara

11、cteristics are marked and must be replaced with parts having specifications equal to those originally installed. 2. Leakage Current Measurement (For 120V Models Only) When service has been completed, it is imperative to verify that all exposed conductive surfaces are properly insulated from supply c

12、ircuits. Meter impedance should be equivalent to 1500 ohms shunted by 0.15 F. TO SERVICE PERSONNEL Leakage current must not exceed 0.5mA. Be sure to test for leakage with the AC plug in both polarities. WALL OUTLET EQUIPMENT UNDER TEST AC LEAKAGE TESTER OR EQUIVALENT INSULATING TABLE CALIFORNIA PROP

13、OSITION 65 WARNING This product contains chemicals known to the State of California to cause cancer, 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 s

14、older 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. 本機搭載基板付 接合部無鉛付。 無鉛種類、修理時 下記無鉛使用推奨。 Sn+Ag+Cu（錫 + 銀 + 銅） Sn+Cu（錫 + 銅

15、） Sn+Zn+Bi（錫 + 亜鉛 + ） 注意： 無鉛融点温度通常鉛入比 30 40程度高、 合 使用。 All of the P.C.B.s installed in this unit and solder joints are soldered using the lead free solder. Among some types of lead free solder currently available, it is recommended to use one of the following types for the repair work. Sn + Ag + Cu (

16、tin + silver + copper) Sn + Cu (tin + copper) Sn + Zn + Bi (tin + zinc + bismuth) Caution: As the melting point temperature of the lead free solder is about 30C to 40C (50F to 70F) higher than that of the lead solder, be sure to use a soldering iron suitable to each solder. About lead free solder /

17、無鉛 2 A-U670/A-670/A-U671/NS-BP401/NS-BP301 A-U670/A-670/A-U671/ NS-BP401/NS-BP301 RadioFans.CN 收音机爱 好者资料库 The MCR-N870 consists of the A-U670, CD-NT670 and NS-BP401. The MCR-N770 consists of the A-670, CD-NT670 and NS-BP401. The MCR-N670 consists of the A-670, CD-NT670 and NS-BP301. A-U670 NS-BP401

18、NS-BP401 NS-BP301 A-670 A-670 MCR-N870 MCR-N770 MCR-N670 CD-NT670 CD-NT670 CD-NT670 SYSTEM COMPOSITION / 構成 3 A-U670/A-670/A-U671/NS-BP401/NS-BP301 A-U670/A-670/A-U671/ NS-BP401/NS-BP301 RadioFans.CN 收音机爱 好者资料库 The MCR-N870D consists of the A-U670, CD-NT670D and NS-BP401. The MCR-N770D consists of t

19、he A-670, CD-NT670D and NS-BP401. The MCR-N670D consists of the A-670, CD-NT670D and NS-BP301. MCR-N870D MCR-N770D MCR-N670D A-U670 NS-BP401 NS-BP401 NS-BP301 A-670 A-670 A-U671 CD-NT670D CD-NT670D CD-NT670D 4 A-U670/A-670/A-U671/NS-BP401/NS-BP301 A-U670/A-670/A-U671/ NS-BP401/NS-BP301 FRONT PANELS

20、A-U670 (K, B, G, L, V models) A-670 (U, T, K, A, B, G, L, V models) A-U671 (U, T, K, A, B, G, L, J models) A-U670 A-670 A-U671 5 A-U670/A-670/A-U671/NS-BP401/NS-BP301 A-U670/A-670/A-U671/ NS-BP401/NS-BP301 G model Label G model Label NS-BP401NS-BP301 NS-BP301NS-BP401 6 A-U670/A-670/A-U671/NS-BP401/N

21、S-BP301 A-U670/A-670/A-U671/ NS-BP401/NS-BP301 REAR PANELS A-U670 (K model) A-U670 (B, G, L models) A-U670 (V model) A-670 (U model) A-670 A-U670 7 A-U670/A-670/A-U671/NS-BP401/NS-BP301 A-U670/A-670/A-U671/ NS-BP401/NS-BP301 A-670 (T model) A-670 (K model) A-670 (A, B, G, L models) A-670 (V model) 8

22、 A-U670/A-670/A-U671/NS-BP401/NS-BP301 A-U670/A-670/A-U671/ NS-BP401/NS-BP301 A-U671 (U model) A-U671 (T model) A-U671 (K model) A-U671 (A, B, G, L models) A-U671 9 A-U670/A-670/A-U671/NS-BP401/NS-BP301 A-U670/A-670/A-U671/ NS-BP401/NS-BP301 A-U671 (J model) NS-BP401 T model G, J models Labels T mod

23、el NS-BP401 10 A-U670/A-670/A-U671/NS-BP401/NS-BP301 A-U670/A-670/A-U671/ NS-BP401/NS-BP301 NS-BP301 T model G, J models Labels T model NS-BP301 11 A-U670/A-670/A-U671/NS-BP401/NS-BP301 A-U670/A-670/A-U671/ NS-BP401/NS-BP301 REMOTE CONTROL PANEL SPECIFICATIONS / 参考仕様 Audio Section / 部 AUX IN (ANALOG

24、) Input Connector / 入力端子 . RCA jack Input Sensitivity/Input Impedance / 入力感度入力 . 230 mV / 47 k-ohms Maximum Input Signal / 最大許容入力 Analog input .2.8 V USB IN (DIGITAL) A-U670/A-U671 Input Connector / 入力端子 .Type B, support USB 2.0 Support Audio Sample Rate / 対応周波数 .384/352.8/192/176.4/96/88.2/48/44.1

25、kHz Support PCM Word Depths / 対応長 .16/24/32 bits Support DSD / 対応 DSD .2.8224/5.6448 MHz SPEAKER OUT Maximum Output Power / 最大出力 (6 ohms, 1 kHz, 10 % THD) A-U670/A-U671 .70 W + 70 W A-670 .65 W + 65 W Minimum RMS Output Power / 定格出力 (6 ohms, 1 kHz, 0.9 % THD) A-U670/A-U671 .60 W + 60 W A-670 .55 W +

26、 55 W Frequency Response / 周波数特性 (10 Hz to 40 kHz) . 0 3 dB Residual Noise / 残留 (IHF-A Network) .230 V Total Harmonic Distortion / 全高調波歪率 (1 kHz, 30 W/6 ohms) .0.05 % or less Signal to Noise Ratio / 信号対雑音比 (IHF-A Network) .95 dB Channel Separation / (Input 5.1 k-ohms shorted) 1 kHz . 70 dB or more H

27、EADPHONE OUT Output Connector / 出力端子 STEREO L/R .Phone jack Output Level/Output Impedance / 出力電圧出力 (32 ohms, 1 kHz, 230 mV / input) . 500 mV / 24 ohms SUBWOOFER OUT Output Connector / 出力端子 . RCA jack Output Level/Output Impedance / 出力電圧出力 (1 kHz, 230 mV / input) . 2.0 V / 1 k-ohms This remote contro

28、l is for the A-U671. A-U671 用。 A-U670A-670A-U671A-U671 12 A-U670/A-670/A-U671/NS-BP401/NS-BP301 A-U670/A-670/A-U671/ NS-BP401/NS-BP301 General / 総合 Power Supply / 電源電圧 U, V, J models . AC 100120 V, 50/60 Hz T, K, A, B, G, L model . AC 220240 V, 50/60 Hz Power Consumption / 消費電力 A-U670/A-U671 .30 W A

29、-670 .28 W System Off Consumption / 時消費電力 A-U670/A-670 .0.5 W * with system connection/without system connection A-U671 .0.5 W Dimensions (W x H x D) / 寸法（幅高奥行） .314 x 70 x 342 mm (12-3/8 x 2-3/4 x 13-1/2) Weight / 質量 .3.3 kg (7.3 lbs.) Finish / 仕上 A-U670 K, B, G, L, V models .Silver color K, B, G,

30、L, V models . Black color A-670 U, T, K, A, B, G, L, V models .Silver color U, T, K, A, B, G, L, V models . Black color A-U671 U, T, K, A, B, G, L, J models .Silver color U, T, K, A, B, G, L, J models . Black color Accessories / 付属品 A-U670/A-670 System connection cable (2P, 500 mm) .x 1 A-U671 Remot

31、e control .x 1 Battery (R6, AA, UM-3) .x 2 NS-BP401NS-BP301 Speaker Section / 部 Type / 形式 .2-way bass reflex speaker system Non-magnetic shielding type 2 非防磁型 Driver / Woofer .13 cm (5-1/8) cone type x 1 Tweeter .3 cm (1-1/8) soft dome type x 1 Frequency Response / 再生周波数帯域 NS-BP401 .50 Hz to 40 kHz

32、(-10 dB) to 100 kHz (-30 dB) NS-BP301 .55 Hz to 40 kHz (-10 dB) to 100 kHz (-30 dB) Impedance / .6 ohms Nominal Input / 許容入力 .60 W Maximum Input / 最大入力 NS-BP401 .120 W NS-BP301 .110 W Sensitivity / 出力音圧 .85 dB / 2.83 V/m Crossover Frequency / 周波数 NS-BP401 .3 kHz NS-BP301 .4 kHz Input Terminal / 入力端子

33、 .Screw/Banana type Dimensions (W x H x D) / 寸法（幅高奥行） NS-BP401 .176 x 310 x 327 mm (6-7/8 x 12-1/4 x 12-7/8) NS-BP301 .176 x 310 x 297 mm (6-7/8 x 12-1/4 x 11-5/8) Weight / 質量 NS-BP401 .5.9 kg (13 lbs.) NS-BP301 .4.6 kg (10.1 lbs.) Finish / 仕上 T, G, J models .Piano Black color (PN) Accessories / 付属品

34、 Speaker cable (2 m) .x 2 Leg .x 8 * The number of accessories is per 2 pieces of NS-BP401 or NS-BP301. 付属品数量、NS-BP401 NS-BP301 2 台分。 * Specifications are subject to change without notice. 参考仕様外観、製品改良予告変更 。 U .U.S.A. model C .Canadian model T .Chinese model K .Korean model A .Australian model T .Chinese model G .European model B .British model G .European model L .Singapore model V . Taiwan