Yamaha-NXU-10-Service-Manual电路原理图.pdf

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1、P.O.Box 1, Hamamatsu, Japan NX-U10 IC DATA . 1214 BLOCK DIAGRAM. 15 PRINTED CIRCUIT BOARDS . 1617 PIN CONNECTION DIAGRAMS . 18 SCHEMATIC DIAGRAM. 19 REPLACEMENT PARTS LIST. 2125 101039 I CONTENTS TO SERVICE PERSONNEL . 2 FRONT PANEL . 3 REAR PANELS. 3 SPECIFICATIONS / 参考仕様 . 45 INTERNAL VIEW . 5 DIS

2、ASSEMBLY PROCEDURES / 分解手順. 67 TROUBLESHOOTING / . 811 SERVICE MANUAL MULTIMEDIA SPEAKER NX-U10 07.01 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

3、 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 per- sonal injury, destruction of expensive components, and failure o

4、f the product to perform as specified. For 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 firm does not c

5、onstitute authorization, certifica- tion 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 departm

6、ents of YAMAHA are continually striving to improve YAMAHA products. Modifications are, therefore, inevitable and specifications are subject to change without notice or obligation to retrofit. Should any discrepancy appear to exist, please contact the distributors Service Division. WARNING:Static dis

7、charges can destroy expensive components. 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

8、you apply power to the unit. 2007 All rights reserved. This manual is copyrighted by YAMAHA and may not be copied or redistributed either in print or electronically without permission. RadioFans.CN 收音机爱 好者资料库 NX-U10 2 NX-U10 I TO SERVICE PERSONNEL 1. Critical Components Information Components having

9、 special characteristics are marked s 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 insulat

10、ed from supply circuits. GMeter impedance should be equivalent to 1500 ohms shunted by 0.15F. GLeakage current must not exceed 0.5mA. GBe sure to test for leakage with the AC plug in both polarities. WALL OUTLET EQUIPMENT UNDER TEST AC LEAKAGE TESTER OR EQUIVALENT INSULATING TABLE WARNING: CHEMICAL

11、CONTENT NOTICE! The solder used in the manufacturing process except soldering of the P.C.B. assy 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

12、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 REA- SON WHATSOEVER! Avoid prolonged, unprotected contact between solder and your skin! When soldering, do not inhale solder fumes o

13、r 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） Sn+Zn+Bi （錫+亜鉛+） 注意： 無鉛融点温度通常鉛入比3040 程度高、合 使用。 All of the P.C.B.s i

14、nstalled 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 (tin + silver + copper) Sn + Cu (tin + copper) Sn + Zn + Bi (tin + zinc + b

15、ismuth) 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 / 無鉛 RadioFans.CN 收音机爱 好者资料库 NX-U10 3 NX-U10 I FRONT PANEL I REAR PANELS K m

16、odelT model A, B, G, L models Status indicator LED V model J model L side viewR side viewFront view U model NX-U10 4 NX-U10 DIMENSIONS Unit: mm (inch) 単位：mm （） I SPEAKER Section / 部 Type / 型式YAMAHA SR-BASS technology / YAMAHA SR-BASS方式 Driver / . 38 mm Titanium-cone full-range driver x 2, Magnetic s

17、hielding type / 38 mm振動板2、防磁型 Impedance / 6 ohms I AMPLIFIER Section / 部 Input / 入力端子 PORTABLE input . 3.5 mm stereo mini jack / 3.5 mm USB input .USB terminal (mini B) / USB端子 （B） Dynamic Power / 1 kHz, 6 ohms .6 W x 2 Maximum Instantaneous Power / 瞬間最大 1 kHz, 6 ohms, 10 % THD .10 W x 2 * Refers to

18、 the power that can be output for 100 ms continuously. / 連続100 ms出力可能。 Input Sensitivity/Input Impedance / 入力感度/入力 PORTABLE input . 300 mV / 10 k-ohms Maximum Input Signal / 最大許容入力 PORTABLE input . 2.0 V Frequency Response / 周波数特性90 Hz to 20 kHz I USB Section / USB部 PC / 対応機種 PC equipped with a USB

19、port on which a Windows or Macintosh operating system is installed. / USB備Windows PCMacintosh OS Windows PCWindows XP, 2000, Me, 98SE MacintoshMac OS 9.1 or later, Mac OS X 10.0 or later / Mac OS 9.1以降、Mac OS X 10.1以降 I GENERAL / 総合 Power Supply / 電源電圧 USB bus power / USB . 5 V / 500 mA USB/AC adapt

20、er / USB/AC Input. AC100 to 240V, 50/60 Hz Output .5 V / 500 mA Battery / 乾電池AAA/R03/UM-4 x 4 / 単4乾電池4 * Battery life / 乾電池寿命 3 hours as alkaline (Output : 10 mW + 10 mW) / 乾電池使用時約3時間 （10 mW10 mW出力時） Power Consumption / 消費電力 When the USB/AC adaptor is used / USB/AC使用時 Less than 5 W / 5 W未満 Dimension

21、s (W x H x D) / 外形寸法 （幅高奥行） 248 x 100 x 33 mm (9-3/4 x 3-15/16 x 1-5/16) Weight / 質量500 g (1 lb. 2 oz.) Finish / 仕上Silver color Accessories / 付属品 USB/AC adapter x 1, Battery holder x 1, USB cable (1 m, A-miniB) x 1, 3.5 mm stereo mini plug cable (0.5 m) x 1, Carrying case x 1, Nonskid pad (2pcs/set)

22、 x 1 Windows is a registered trademark of Microsoft Corporation in the United States and/or other countries. Microsoft Windows 米国 Microsoft Corporation 登録商標 。 Macintosh is a trademark of Apple Computer, Inc., registered in the United States and other countries. Macintosh 、米国Apple Computer,Inc. 登録商標。

23、 98 (3-7/8) 100 (3-15/16)33 (1-5/16) 33 When using the stand. (1-5/16) 248 (9-3/4) 60 (2-3/8) *Specifications are subject to change without notice due to product improvements. 参考仕様外観予告変更。 U . U.S.A. and Canada models T . Chinese modelK . Korean model A . Australian modelB . British model G . Europea

24、n modelL. Singapore model V . Taiwan modelJ . Japanese model “Swing Radiator BassTM” is a trademark of YAMAHA CORPORATION. Swing Radiator BassTM 株式会社商標。 I SPECIFICATIONS / 参考仕様 NX-U10 5 NX-U10 The current status of this unit / 本機状態 This unit is on. / 電源状態。 This unit is off, or power supply is not co

25、nnected. / 電源、電源接続状態。 Limiter control has been activated due to excessive input. (Turn down the volume level until the LED stops flashing.) / 大音量入力、作動状態。 （点灯状態戻下 ） The status indicator turns on or flashes to indicate the status of this unit. LED status / On / 点灯 Off / 消灯 Flashing / 点滅 I INTERNAL VIE

26、W MAIN (3) P.C.B. MAIN (1) P.C.B. MAIN (5) P.C.B. MAIN (4) P.C.B. MAIN (6) P.C.B. MAIN (2) P.C.B. 1 2 3 4 5 6 31 5 2 46 About the Status Indicator (LED) / （LED） 本機状態表示点 灯点滅 NX-U10 6 NX-U10 Fig. 1 I DISASSEMBLY PROCEDURES / 分解手順 1 1 1 3 4 4 Front panel unit Driver L L Driver R R Side cover R R Side c

27、over L L Ring Ring CB2 CB10 CB3 Note) After disassembling the unit or replacing any part, be sure to input a signal (20 Hz to 20 kHz) from the POR- TABLE terminal to make sure that the unit is free from chattering or abnormal sound. The double coated adhesive tape and bush once re- moved cannot be r

28、eused. Be sure to use a new double coated adhesive tape and bush for replace- ment. 注意） 分解部品交換後、必PORTABLE端子信号 （20Hz20kHz） 入力、本機付異音等 確認。 一度取外両面粘着、使用 。必、新両面粘着交換 。 1. Removal of Driver L/R a. Remove 2 rings. (Fig. 1) b. Remove side cover L. (Fig. 1) c. Remove side cover R. (Fig. 1) d. Remove 7 screws (

29、1). (Fig. 1) e. Open the rear cover, remove 3 screws (2). (Fig. 2) f. Remove CB10. (Fig. 1) g. Remove front panel unit. (Fig. 1) h. Remove screw (3) and 4 screws (4). (Fig. 1) i. Remove CB3 (driver L) and CB2 (driver R). (Fig. 1) j. Remove the driver L/R. (Fig. 1) 1. L/R外方 a. 2個外。 （Fig. 1） b. L外。 （F

30、ig. 1） c. R外。 （Fig. 1） d.17本外。 （Fig. 1) e. 開、23本外。 （Fig. 2） f. CB10外。 （Fig. 1） g. 外。 （Fig. 1） h.31本、44本外。 （Fig. 1） i.CB3 （L） 、CB2 （R） 外。 （Fig. 1） j.L/R取外。(Fig. 1） Fig. 2 2 Rear cover NX-U10 7 NX-U10 Fig. 3 2. Removal of MAIN (1) P.C.B. a. Remove 4 screws (5). (Fig. 3) b. Remove CB5, CB6, CB7, CB8 an

31、d CB9. (Fig. 3) c. Remove MAIN (1) P.C.B. (Fig. 3) 3. Removal of MAIN (2), (3), (4) and (5) P.C.B.s a. Remove 4 bush. (Fig. 3) b. Remove cover shield (2), (3), (4) and (5). (Fig. 3) c. Remove 4 screws (6). (Fig. 3) d. Remove the MAIN (2), (3), (4) and (5) P.C.B.s. (Fig. 3) 2. MAIN （1） P.C.B.外方 a.54本

32、外。 （Fig. 3） b. CB5、CB6、CB7、CB8、CB9外。 （Fig. 3） c. MAIN （1） P.C.B.取外。 （Fig. 3） 3. MAIN （2） 、 （3） 、 （4） 、 （5） P.C.B.外方 a. 4個外。 （Fig. 3） b. （2） 、 （3） 、 （4） 、 （5） 外。 （Fig. 3） c.64本外。 （Fig. 3） d. MAIN （2） 、 （3） 、 （4） 、 （5） P.C.B.取外。 （Fig. 3） 5 5 6 6 6 6 Bush Cover shield (5) （5） Cover shield (4) （4） Bush

33、Bush Cover shield (3) （3） Cover shield (2) （2） CB5 CB6 CB7 CB8 CB9 MAIN (2) P.C.B. MAIN (1) P.C.B. MAIN (3) P.C.B. MAIN (4) P.C.B. MAIN (5) P.C.B. 交換時注意 新、塗 。 必、新下記4箇所 塗使用。 Caution when replacing the front panel unit The new front panel unit has no hot glue applied. Be sure to apply hot glue to the

34、new front panel unit at 4 locations as shown below before using it. Front panel unit Hook Hot glue is applied 塗 NX-U10 8 NX-U10 I TROUBLESHOOTING When the status indicator LED does not light up when POWER key is pressed. When no sound is produced. NGNG OKOK PC/Macintosh and the main unit are connect

35、ed with the USB cable. Install the USB/AC adapter to the USB cable and connect it to the AC outlet. Does the LED turn on ? Disconnect the USB cable from the main unit and load the battery. Does the LED turn on ? Remove the USB/AC adapter, connect the USB cable again and re- check. Check USB DAC (IC2

36、) and peripheral circuit. Connect the cable to another PC/ Macintosh and check. Check the power circuit (IC1 and Q15) and peripheral circuit. (Is the power voltage +5V and +12V correct ?) Check the power circuit (IC15 and IC16) and peripheral circuit. (Is the power voltage +5V, +12V and +50V correct

37、 ?). NG OK NG OK NG OKOK NG PC/Macintosh and the main unit are connected with the USB cable. Is the USB cable connected properly? Recheck after reconnecting the USB cable or after replacing it with a new one. Is the audio device of PC/Macintosh set to “USB AUDIO DAC”? Also, is the volume setting mut

38、ed ? Recheck settings on the PC/ Macintosh side. Connect the main unit and PC/Macintosh or the portable audio player to the PORTABLE terminal with 3.5mm mini-plug cable. Is the sound produced ? Is the power voltage (+5V and +12V) correct ? Check the power circuit (IC1, IC15, IC16, Q15) and periphera

39、l circuit. Check USB DAC (IC2) and peripheral circuit. Check the audio circuit (IC5, IC9, IC10 and IC12) and peripheral circuit. NX-U10 9 NX-U10 NG NG OK OK The main unit and PC/Macintosh or portable audio player are connected with 3.5mm mini-plug cable. Is 3.5mm mini-plug cable connected properly?

40、Check the audio circuit (IC5, IC9, IC10 and IC12) and peripheral circuit. Connect 3.5 mm mini-plug cable again and recheck. Also, replace 3.5mm mini-plug cable and recheck. Is the power voltage (+5V, +12V and +50V) correct ? Check the power circuit (IC1, IC15, IC16 and Q15) and peripheral circuit. N

41、X-U10 10 NX-U10 “POWER” 押LED点灯場合 音出場合 I NGNG OKOK USB USB/AC取付、 AC接続 点灯？ 本機接続 USB外、 乾電池入 点灯? USB/AC外USB 接続直再度確認。 USB DAC （IC2） 周辺回路 確認。 別PC/Macintosh接続直 確認。 電源回路 （IC15、IC16） 周辺 回路確認。 （電源電圧+5V、+12V、+50V 正常?） 電源回路 （IC1、Q15） 周辺 回路確認。 （電源電圧+5V正常?） PC/Macintosh本機 USB接続 NG OK NG OK OKOK USB正 接続？ PC/ Macin

42、tosh USB AUDIO DAC 設定 ？ 、設定 ？ USB接続直 再度確認。 、USB交換 再度確認。 電源電圧 （+5V、+12V） 正常？ PC/Macintosh側設定 再度確認。 電源回路 （IC1、IC15、IC16、Q15） 周辺回路確認。 本機PC/ Macintosh、 3.5mm PORTABLE端子接続、 音出 ? PC/Macintosh本機 USB接続 USB DAC （IC2） 周辺回路 確認。 回路 （IC5、IC9、IC10、 IC12） 周辺回路確認。 NGNG NX-U10 11 NX-U10 NG NG OK 本機PC/Macintosh 3.5mm

43、 接続 3.5mm 正接続？ 3.5mm 接続直再度確認。 、3.5mm 交換再度確認。 電源電圧 （+5V、+12V、+50V） 正常？ 電源回路 （IC1、IC15、IC16、Q15） 周辺回路確認。 回路 （IC5、IC9、IC10、 IC12） 周辺回路確認。 OK NX-U10 12 NX-U10 IC2:PCM2704DBR (MAIN P.C.B.) Stereo audio DAC with USB interface I IC DATA EEPROM Interface(1) SSPND VCCPVCCLVCCRVDDZGNDDGNDAGNDRAGNDLPGND VCOM A

44、nalog PLL FIFO DAC VOUTL S/PDIF Encoder XTIXTO12 MHz PLL (X8) 96 MHzTracker (SpAct) USB Protocol Controller Power Manager 5-V to 3.3-V Voltage Regulator Control Endpoint ISO-Out Endpoint HID Endpoint VBUS USB SIE D+ D- XCVR DT HOST HID0/MS HID1/MC CK VOUTR DOUT PSEL TEST0 TEST1 HID2/MD (1)AppliestoP

45、CM2704DB (2)AppliestoPCM2705DB SPI Interface(2) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 XTO CK DT PSEL DOUT DGND VDD D- D+ VBUS ZGND AGNDL VCCL VOUTL VOUTR VCCR AGNDR VCOM PGND VCCP HOST HID0/MS HID1/MC HID2/MD TEST1 TEST0 SSPND XTI O O I/O I O - - I/O I/O - - - -

46、O O - - - - - I I I I I I O I Crystal oscillator output. Clock output for external ROM (PCM2704). Must be left open (PCM2705). Data input/output for external ROM (PCM 2704). Must be left open with pull-up resistor (PCM2705). (1) Power source select (LOW: self-power, HIGH: bus-power). (1) S/PDIF output. Digital ground. Digital power supply. (4) USB differential