Yamaha-MXD-1-Service-Manual电路原理图.pdf

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1、100869 P.O.Box 1, Hamamatsu, Japan I CONTENTS TO SERVICE PERSONNEL . 23 FRONT PANEL . 4 REAR PANELS . 45 SPECIFICATIONS. 6 INTERNAL VIEW . 7 SERVICE PRECAUTIONS / 時注意事項.810 DISASSEMBLY PROCEDURES / 分解手順. 1114 TROUBLE SHOOTING / 故障方法 .1516 PROTECTION INFORMATION / 情報 .1718 IC DATA . 1921 BLOCK DIAGRA

2、M. 2223 PRINTED CIRCUIT BOARD . 2433 PIN CONNECTION DIAGRAM . 34 SCHEMATIC DIAGRAM . 3537 PARTS LIST. 3954 SERVICE MANUAL DIGITAL POWER AMPLIFIER MX-D1 MX-D1 IMPORTANT NOTICE This manual has been provided for the use of authorized YAMAHA Retailers and their service personnel. It has been assumed tha

3、t 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 restated. WARNING:Failure to follow appropriate service and safety procedures when servicing this product may result in personal inju

4、ry, destruction of expensive components, and failure of 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 sa

5、le of this manual to any individual or firm does not constitute authorization, certification 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 c

6、over. The research, engineering, and service departments 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 t

7、he 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 buss in the unit (heavy gauge black wires connect to this buss). IMPORTANT:Turn the unit OFF during disass

8、embly and part replacement. Recheck all work before you apply power to the unit. RadioFans.CN 收音机爱 好者资料库 2 MX-D1 MX-D1 WALL OUTLET EQUIPMENT UNDER TEST AC LEAKAGE TESTER OR EQUIVALENT INSULATING TABLE I TO SERVICE PERSONNEL 1. Critical Components Information Components having special characteristics

9、 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 insulated from supply circuits.

10、 GMeter impedance should be equivalent to 1500 ohm shunted by 0.15F. GLeakage current must not exceed 0.5mA. GBe sure to test for leakage with the AC plug in both polarities. WARNING: CHEMICAL CONTENT NOTICE! The solder used in the production of this product contains LEAD. In addition, other electri

11、cal/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 PLACE SOLDER, ELECTRICAL/ELECTRONIC OR PLASTIC COMP

12、ONENTS IN YOUR MOUTH FOR ANY REA- SON WHATSOEVER! 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 located inside the enclosure of this product, wash you

13、r hands before handling food. “CAUTION” “F501: FOR CONTINUED PROTECTION AGAINST RISK OF FIRE, REPLACE ONLY WITH SAME TYPE 20A, 250V FUSE.” CAUTION F501: REPLACE WITH SAME TYPE 20A, 250V FUSE. ATTENTION F501: UTILISER UN FUSIBLE DE RECHANGE DE MEME TYPE DE 20A, 250V. RadioFans.CN 收音机爱 好者资料库 3 MX-D1 M

14、X-D1 製品使用基板面付 、Sn+Ag+Cu （錫+銀+銅） 合金無鉛使用 。 、MAIN P.C.B.部品面OPERATION P.C.B.部品面 表面実装部品付、鉛入使用 。 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。 鉛入使得場合、交換 部品端子部周辺部無鉛取除、 無鉛鉛入十分溶状態 付。 The foil side of all P.C.B.s used for this product are soldered with lead-fre

15、e soldering material which is an alloy of Sn+Ag+Cu (tin + silver + copper). However, the surface mount devices on the component side of the MAIN P.C.B. and OPERATION P.C.B. are soldered with the lead solder. Among some types of lead-free solder currently available, it is recommended to use one of th

16、e following types for the repair work. Sn + Ag + Cu (tin + silver + copper) Sn + Cu (tin + copper) Sn + Zn + Bi (tin + zinc + bismuth) Caution: 1. 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

17、 iron suitable to each solder. 2. If lead solder must be used, be sure to remove lead- free solder from each terminal section of the parts to be replaced and from the area around it completely before soldering, or make sure that the lead-free solder and lead solder melt together fully. About lead-fr

18、ee solder / 無鉛 75 (2-15/16) 60 (2-3/8) 401 (15-13/16) 15 (9/16) 2 (1/16) 34 (1-5/16) 437 (17-3/16) 435 (17-1/8) Unit : mm (inch) 単位: mm（） DIMENSIONS / 寸法図 4 MX-D1 MX-D1 Cover I REAR PANELS U, C models A model I FRONT PANEL 5 MX-D1 MX-D1 B, G models T model K model J model 6 MX-D1 MX-D1 Minimum RMS O

19、utput Power / 定格出力 (1 kHz, 1% THD) U, C models (8 ohms) . 500 W + 500 W A, B, G, T, K, J models (4 ohms to 8 ohms) .500 W + 500 W Dynamic Power Per Channel / (IHF) 8/6/4/2 ohms .700/850/1000/1000 W Dynamic Headroom / 8/6/4 ohms.1.5/2.3/3.0 dB Damping Factor / 1 kHz, 8 ohms . more than 200 Input Sens

20、itivity / Input Impedance (入力感度/入力 ) UNBALANCE .1.3 V / 25 k-ohms BALANCE.2.2 V / 10 k-ohms Frequency Response / 周波数特性 1 Hz to 100 kHz. 3.0 dB 10 Hz to 20 kHz. 0.5 dB Total Harmonic Distortion / 全高調波歪率 (1 kHz, 10 W/ 8 ohms, 20 kHz LPF) UNBALANCE . less than 0.002 % BALANCE. less than 0.002 % Signal

21、to Noise Ratio / 信号対雑音比 (IHF-A network) (Input shorted, 20 kHz LPF) UNBALANCE . more than 120 dB BALANCE. more than 120 dB Channel Separation / (Input 5.1 k-ohms shorted, 1 kHz) UNBALANCE . more than 100 dB BALANCE. more than 100 dB Muting / .- I SPECIFICATIONS / 参考仕様 Power Supply / 電源電圧 U, C models

22、 . AC 120 V, 60 Hz A model . AC 240 V, 50 Hz B, G models . AC 230 V, 50 Hz T model . AC 220 V, 50 Hz K model . AC 220 V, 60 Hz J model. AC 100V, 50/60 Hz Power Consumption / 消費電力 U, C models . 350 W A, B, G, T, K models . 350 W J model. 350 W Standby Power Consumption (Reference Data) / 待機時 消費電力(参考値

23、) . less than 0.1 W Dimensions / 寸法 (W x H x D) . 435 x 75 x 437 mm (17-1/8 x 2-15/16 x 17-3/16) Weight / 重量 . 10.4 kg (22 lbs. 15 oz.) Accessories / 付属品 Power Cable x 1 Clamp Filter with Fixing Tie (for Power Cable) x 2 Clamp Filter (for RS-232C Interface Cable) x 1 Clamp Filter (for Control Cable)

24、 x 2 U, C models Clamp Filter (for Audio Pin Cable) x 1 U, C models *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. modelC . Canadian model A . Australian modelB. British model G. European modelT . Chinese model K . Korean modelJ . Japanese mo

25、del 7 MX-D1 MX-D1 I INTERNAL VIEW 123 4567 A098 1 FUNCTION (1) P.C.B. 2 FUNCTION (4) P.C.B. 3 FUNCTION (3) P.C.B. 4 FUNCTION (6) P.C.B. 5 FUNCTION (2) P.C.B. 6 FUNCTION (7) P.C.B. 7 FUNCTION (5) P.C.B. 8 MAIN (R) P.C.B. 9 OPERATION (1) P.C.B. 0 OPERATION (2) P.C.B. A MAIN (L) P.C.B. 8 MX-D1 MX-D1 I

26、SERVICE PRECAUTIONS / 時注意事項 1. 安全対策 製品内部高電圧部分危険。修理際、 絶縁性手袋使用安全対策行。 C196、C197、C198、C199、C222、C223電源 OFF後電荷残、高電圧維持危険 。 修理作業前放電用抵抗 （5k/10W） 下記端子間接続 放電。放電所用時間約30秒間。 （Lch、Rch各4箇所。） 1. Safety measures Some internal parts in this product contain high voltages and are dangerous. Be sure to take safety measu

27、res during servicing, such as wearing insulating gloves. Note that C196, C197, C198, C199, C222 and C223 are dangerous even after the power is turned off because an electric charge remains and a high voltage continues to exist there. Before starting the service work, connect discharging resistors (5

28、 k-ohms/10 W) to the terminals indicated in the figure below to discharge electricity. The time required for discharging is about 30 seconds. (at 4 locations for Lch and Rch, each) C217 R272 TP304 TP302 TP301 TP303 IC129 C223 C222 C199 C197 C198C196 C191 D134 D135 D137 D139 D138 D136 C190 T101 5 k-o

29、hms 10W 5 k-ohms 10W 5 k-ohms 10W 5 k-ohms 10W MAIN P.C.B. 9 MX-D1 MX-D1 2. Precautions for connection of measuring instrument The structure of this product is twin-monaural type. Connect the measuring instrument to the Lch side GND when taking measurements on the Lch side and to the Rch side GND wh

30、en taking measurements on the Rch side. Note: The GND is commonly used for Lch and Rch at the screw terminal of the FUNCTION P.C.B. (3). 2. 計測器接続時注意 製品構成。計測器接続 際、Lch側測定場合Lch側GND接続、Rch側 測定場合Rch側GND接続。 注： LchGNDRchGND、FUNCTION P.C.B. (3) 端子部共通。 5 k-ohms5 k-ohms 10W10W 5 k-ohms5 k-ohms 10W10W 5 k-ohms5

31、 k-ohms 10W10W 5 k-ohms 10W 5 k-ohms 10W 5 k-ohms 10W 5 k-ohms 10W 10 MX-D1 MX-D1 Q117 Q118 Q119 FET Mounting Screw FET取付 Heatsink/AMP /AMP Q120 Heatsink/AMP Mounting Screw /AMP取付 Heatsink/AMP /AMP Frame 3. FET絶縁確認 MAIN P.C.B.FET （Q117Q120） 取外場合、組立後 必使用FET本体金属部分FET取付 間絶縁確認。 4. /AMP間絶縁確認 /AMP取付外場 合、組

32、立後必使用/AMP 間絶縁確認。 3. Confirming insulation of FET When the FETs (Q117 to Q120) of the MAIN P.C.B. were removed, be sure to check using the tester that the metal part of each FET itself is insulated from the FET mounting screw after reinstalling them. 4. Confirming insulation between Heatsink/AMP and

33、chassis When the Heatsink/AMP mounting screws were removed, be sure to check using the tester that the Heatsink/AMP is insulated from the Frame after reinstalling them. 11 MX-D1 MX-D1 Front Panel Top Panel 4 4 Side Panel Side Panel Bottom Cover Cloth 布 1 11 1 2 3 I DISASSEMBLY PROCEDURES / 分解手順 （番号順

34、部品取外。） AC電源、電源抜。 1. 外方 a. 柔布敷、上本機反転置。 b.111本外、取外。 （Fig. 1） 2. 、外方 a.24本、33本外。 （Fig. 1） b. 本機上向、44本外。 （Fig. 2） c. 、一体 方向取外。 （Fig. 2） (Remove parts in the order as numbered.) Disconnect the power cable from the AC outlet. 1. Removal of Bottom Cover a. Spread a soft cloth and place the unit upside down

35、 on it. b. Remove 11 screws (1) and then remove the Bottom Cover. (Fig. 1) 2. Removal of Front Panel, Side Panels and Top Panels a. Remove 4 screws (2) and 3 screws (3). (Fig. 1) b. Set the main unit with its top facing up and remove 4 screws (4). (Fig. 2) c. Remove the Front Panel, Side Panel and T

36、op Panel together by sliding them toward the front. (Fig. 2) Fig. 1Fig. 2 3. Discharging Capacitor Refer to “SERVICE PRECAUTIONS” on page 8. 3. 放電 8 “時注意事項” 参照 12 MX-D1 MX-D1 CB505 CB101 CB102 CB105 CB103 CB104 FUNCTION (1) P.C.B. MAIN (R) P.C.B. CB106 CB107 CB108 CB504 5 5 6 7 8 CB101 CB102 CB105 C

37、B103 CB104 MAIN (L) P.C.B.CB106 CB107 CB108 9 9 A 0 0 Fig. 3Fig. 4 4. Removal of MAIN (R) P.C.B. a. Remove 5 screws (5) and 5 screws (6). (Fig. 3) b. Remove the connectors (CB101 to CB108) on the MAIN (R) P.C.B. (Fig. 3) c. Remove the MAIN (R) P.C.B. upward. 5. Removal of FUNCTION (1) P.C.B. a. Remo

38、ve 4 screws (7) and 5 screws (8). (Fig. 3) b. Remove the connectors (CB504, CB505) on the FUNCTION (1) P.C.B. (Fig. 3) c. Remove the FUNCTION (1) P.C.B. upward. 6. Removal of MAIN (L) P.C.B. a. Remove 5 screws (9), 6 screws (0) and 2 screws (A). (Fig. 4) b. Remove the connectors (CB101 to CB108) on

39、the MAIN (L) P.C.B. (Fig. 4) c. Release the angle catching the MAIN (L) P.C.B. and remove it upward. 4. MAIN （R） P.C.B.外方 a.55本、65本外。 （Fig. 3） b. MAIN （R） P.C.B.上 （CB101CB108） 外 。 （Fig. 3） c. MAIN （R） P.C.B.上方取外。 5. FUNCTION （1） P.C.B.外方 a.74本、85本外。 （Fig. 3） b. FUNCTION （1） P.C.B.上 （CB504、CB505） 取外。

40、 （Fig. 3） c. FUNCTION （1） P.C.B.上方取外。 6. MAIN （L） P.C.B.外方 a.95本、06本、A2本外。 （Fig. 4） b. MAIN （L） P.C.B.上 （CB101CB108） 外 。 （Fig. 4） c. MAIN （L） P.C.B.引、上方 取外。 13 MX-D1 MX-D1 Rubber Sheet and Cloth 布 Non-conductive Support 枕木 FUNCTION (5) P.C.B. FUNCTION (4) P.C.B. B C 7. FUNCTION （5） P.C.B.外方 a.B4本外。

41、（Fig. 5） b. FUNCTION （5） P.C.B.上方取外。 8. FUNCTION （4） P.C.B.外方 a.C4本外。 （Fig. 5） b. FUNCTION （4） P.C.B.上方取外。 7. Removal of FUNCTION (5) P.C.B. a. Remove 4 screws (B). (Fig. 5) b. Remove the FUNCTION (5) P.C.B. upward. 8. Removal of FUNCTION (4) P.C.B. a. Remove 4 screws (C). (Fig. 5) b. Remove the FUN

42、CTION (4) P.C.B. upward. P.C.B.場合 本機上布敷、上P.C.B.立 。 （Fig. 6） MAIN （L） P.C.B.、枕木使立。 （Fig. 6） 外 （） 接続。 FUNCTION (2) P.C.B.FUNCTION (3) P.C.B. 取外浮動作 、FUNCTION (2) P.C.B.FUNCTION (3) P.C.B.線等接続 。 When checking the P.C.B.: Put the Rubber Sheet and a Cloth over the equipment. Then place the P.C.B. upright

43、on the Cloth and check it. (Fig. 6) Set the MAIN (L) P.C.B. upright using a non- conductive support, such as wood. (Fig. 6) Reconnect all cables (connectors) that have been disconnected. When the FUNCTION (2) P.C.B. and FUNCTION (3) P.C.B. are removed from the chassis, they do not work because their grounding are disconnected. Be sure to connect the ground of FUNCTION (2) P.C.B. and FUNCTION (3) P.C.B. to the chassis respectively with a jumper wire or the like. Fig. 5 Fig. 6 14 MX-D1 MX-D1 Cloth 布 Pliers Nut FUNCTION (3) P.C.B. FUNCTION (7) P.C.B. FUNCTION