Yamaha-AS300-int-sm(1) 维修电路原理图.pdf

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1、A-S500/A-S3001 0 11 8 8SERVICE MANUALIMPORTANT NOTICEThis 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 already known and understo

2、od 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 these reasons, we advise

3、 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 or recognition of any appl

4、icable 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 to improve YAMAHA products.

5、Modifications 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 components. Discharge any static ele

6、ctricity 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. CONTENTSTO SERVICE PERSONNEL .2IMPEDA

7、NCE SELECTOR .3FRONT PANELS .3REAR PANELS .48REMOTE CONTROL PANEL .9SPECIFICATIONS / 参考仕様 .910INTERNAL VIEW .11SERVICE PRECAUTIONS / 時注意事項 .11DISASSEMBLY PROCEDURES / 分解手順 .1215UPDATING FIRMWARE /書込 .1620SELF-DIAGNOSTIC FUNCTION / （自己診断機能） .2127AMP ADJUSTMENT / 部調整 .2829IC DATA .3032PIN CONNECTION D

8、IAGRAMS .3334BLOCK DIAGRAM .35PRINTED CIRCUIT BOARDS .3652SCHEMATIC DIAGRAMS .5361REPLACEMENT PARTS LIST .6379REMOTE CONTROL .80INTEGRATED AMPLIFIER10.09P.O.Box 1, Hamamatsu, JapanCopyright 2010 All rights reserved.This manual is copyrighted by YAMAHA and may not be copied orredistributed either in

9、print or electronically without permission.A-S500/A-S300RadioFans.CN 收音机爱 好者资料库2A-S500/A-S300A-S500/A-S3001. Critical Components InformationComponents having special characteristics are marked and must be replaced with parts having specifications equal to those originally installed.2. Leakage Curren

10、t 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. Meter impedance should be equivalent to 1500 ohms shunted by 0.15 F. TO SERVICE PERSONNEL Leakage current must not exceed

11、0.5mA. Be sure to test for leakage with the AC plug in both polari-ties.WALLOUTLETEQUIPMENTUNDER TESTAC LEAKAGETESTER OREQUIVALENTINSULATINGTABLEFor U model“CAUTION”“F1: FOR CONTINUED PROTECTION AGAINST RISK OF FIRE, REPLACE ONLY WITH SAME TYPE 8A (A-S500) / 6A (A-S300), 125V FUSE.”For C modelCAUTIO

12、NF1: REPLACE WITH SAME TYPE 8A (A-S500) / 6A (A-S300), 125V FUSE.ATTENTIONF1: UTILISER UN FUSIBLE DE RECHANGE DE MME TYPE DE 8A (A-S500) / 6A (A-S300), 125V.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 30 40程度高、 合使用。All of the P.C.B.s installed i

13、n 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 + bismuth)Caut

14、ion: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This product contains chemicals known to the State of California to cause cancer, or b

15、irth defects or other reproductive harm.DO NOT PLACE SOLDER, ELECTRICAL/ELECTRONIC OR PLASTIC COMPONENTS IN YOUR MOUTH FOR ANY REASON 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 co

16、me in contact with solder or components located inside the enclosure of this product, wash your hands before handling food.WARNING: CHEMICAL CONTENT NOTICE!RadioFans.CN 收音机爱 好者资料库3A-S500/A-S300A-S500/A-S300 IMPEDANCE SELECTORA-S500 (U, C, R, T, A, B, G, L models)A-S300 (R, T, A, B, G, L, J models) F

17、RONT PANELSWARNING:Do not change the setting of the IMPEDANCE SELECTOR switch when the unit power is switched on, as doing so may damage the unit.IMPEDANCE SELECTORA-S500A-S3004A-S500/A-S300A-S500/A-S300A-S500 (U, C models) REAR PANELSA-S500 (R model)A-S500 (T model)A-S5005A-S500/A-S300A-S500/A-S300

18、A-S500 (A model)A-S500 (B model)A-S500 (G model)A-S5006A-S500/A-S300A-S500/A-S300A-S500 (L model)A-S300 (R model)A-S300 (T model)A-S500A-S3007A-S500/A-S300A-S500/A-S300A-S300 (A model)A-S300 (B model)A-S300 (G model)A-S3008A-S500/A-S300A-S500/A-S300A-S300 (J model)A-S300 (L model)A-S3009A-S500/A-S30

19、0A-S500/A-S300 REMOTE CONTROL PANELRAS5 SPECIFICATIONS / 参考仕様 Audio Section / 部Minimum RMS Output Power (Power Amp. Section) /定格出力（部）(8 ohms, 20 Hz to 20 kHz, 0.019 % THD)A-S500 .85 W + 85 WA-S300 .60 W + 60 W(6 ohms, 20 Hz to 20 kHz, 0.038 % THD)A-S500 (U, C, R, T, A, B, G models) .100 W + 100 WA-S

20、300 (U, C, R, T, A, B, G, J models) .70 W + 70 WDynamic Power Per Channel / (IHF)(8/6/4/2 ohms)A-S500 .130/150/185/220 WA-S300 .100/120/140/150 WMAX Power Per Channel B, G models (1 kHz, 0.7 % THD, 4 ohms)A-S500 .120 WA-S300 .95 WIEC Power B, G models(1 kHz, 0.019 % THD, 8 ohms)A-S500 .100 WA-S300 .

21、75 WPower Band Width / A-S500 (0.06 % THD, 42.5 W, 8 ohms) .10 Hz to 50 kHzA-S300 (0.06 % THD, 30 W, 8 ohms) .10 Hz to 50 kHzDamping Factor / (SPEAKER-A)1 kHz, 8 ohms . 240 or moreMaximum Effective Output Power / 実用最大出力 (JEITA)(1 kHz, 10 % THD) A-S500R, T, L models (8 ohms) .130 WR, T models (6 ohms

22、) .150 WA-S300R, T, L, J models (8 ohms) .100 WR, T, J models (6 ohms) .110 WInput Sensitivity/Input Impedance / 入力感度入力 PHONO (MM) .3.0 mV / 47 k-ohmsCD, etc. .200 mV / 47 k-ohmsMaximum Input Signal / 最大許容入力 (1 kHz) PHONO (MM) (0.003 % THD) .60 mV or moreCD, etc. (0.5 % THD) .2.2 V or moreOutput Lev

23、el/Output Impedance / 出力電圧出力REC OUT .200 mV / 1.0 k-ohms or lessHeadphone Jack Rated Output/Impedance /出力出力CD, etc. (Input, 1 kHz, 200 mV, 8 ohms)A-S500 .430 mV / 470 ohmsA-S300 .360 mV / 470 ohmsFrequency Response / 周波数特性CD, etc. (20 Hz to 20 kHz) .0 0.5 dBCD, etc. Pure DIRECT ON (10 Hz to 100 kHz)

24、 .0 1.0 dBRIAA Equalization Deviation / RIAA 偏差PHONO (MM) .0.5 dBTotal Harmonic Distortion / 全高調波歪率 (20 Hz to 20 kHz)PHONO (MM) to REC OUT (3 V) . 0.025 % or lessA-S500CD, etc. to SP OUT (42.5 W, 8 ohms) .0.015 % or lessA-S300CD, etc. to SP OUT (30 W, 8 ohms) . 0.015 % or lessSignal to Noise Ratio /

25、 信号対雑音比 (IHF-A Network)PHONO (MM) (5 mV Input shorted) . 88 dB or moreCD, etc. (Pure DIRECT ON) (200 mV input shorted) . 100 dB or moreA-S500A-S300A-S500A-S30010A-S500/A-S300A-S500/A-S300 DIMENSIONS / 寸法図Residual Noise / 残留 (IHF-A Network) .30 VChannel Separation / CD, etc. (Input 5.1 k-ohms shorted

26、)1 kHz . 65 dB or more10 kHz . 50 dB or moreTone Control Characteristics / 特性BASSBoost/Cut (50 Hz) . 10 dBTurnover frequency .350 HzTREBLEBoost/Cut (20 kHz) . 10 dBTurnover frequency .3.5 kHzContinuous Loudness Control /Attenuation / 最大補正率 (1 kHz) .-30 dBGain Tracking Error / GAIN (0 to -99 dB) .0.5

27、 dB or less General / 総合Power Supply / 電源電圧U, C models .AC 120 V, 60 HzR model .AC 110-120/220-240 V, 50/60 HzT model .AC 220 V, 50 HzA model .AC 240 V, 50 HzB, G models .AC 230 V, 50 HzL model .AC 220-240 V, 50/60 HzJ model .AC 100 V, 50/60 HzPower Consumption / 消費電力A-S500U, C models .240 W, 330 VA

28、R, T, A, B, G models .240 WL model .220 WA-S300R, T, A, B, G, L models .190 WJ model .150 WStandby Power Consumption / 待機時消費電力 . 0.5 W or lessYID-W10 Standby Power Consumption (YID-W10 connect) / YID-W10 待機時消費電力（YID-W10 接続時） . 1.2 W or lessiPod Charge Power Consumption / iPod 充電時消費電力A-S500 . 35 W or

29、 lessA-S300 . 25 W or lessMaximum Power Consumption R model(1 kHz, 6 ohms, 10 % THD)A-S500 .510 WA-S300 .400 WAC Outlets / AC J modelA-S300Switched x 2 .100 W max. totalDimensions (W x H x D) / 寸法（幅 高 奥行） .435 x 151 x 387 mm (17-1/8 x 6 x 15-1/4)Weight / 質量 A-S500 .10.3 kg (22.7 lbs.)A-S300 .9.0 kg

30、(19.8 lbs.)Finish / 仕上 Black color . U, C, R, A, B, G, L, J modelsSilver color . R, T, A, B, G, L, J modelsAccessories / 付属品 Remote control .x 1Battery (R6, AA, UM-3) .x 2* 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 modelR .General model T.Chines

31、e modelA .Australian modelB .British model G .European modelL.Singapore modelJ .Japanese modeliPhone, iPod, iPod classic, iPod nano and iPod touch are trademarks of Apple Inc., registered in the U.S. and other countries.iPhone、 iPod、 iPod classic、 iPod nano、 iPod touch 、 米国他国登録 Apple Inc. 商標。Front v

32、iewTop view435 (17-1/8)335 (13-1/4)50(2)151 (5-7/8)130 (5-1/8)21(7/8)20.5(3/4)25.5(1)387 (15-1/4)341 (13-3/8)55(2-1/8)46(1-3/4)240 (9-1/2) 60Unit: mm (inch)単位 ： mm（）A-S500A-S30011A-S500/A-S300A-S500/A-S300OPERATION (1) P.C.B.MAIN (6) P.C.B.MAIN (5) P.C.B. (J model) OPERATION (7) P.C.B. (R model)MAIN

33、 (2) P.C.B.DOCK P.C.B.FUNCTION (2) P.C.B.FUNCTION (3) P.C.B. FUNCTION (1) P.C.B. MAIN (4) P.C.B.MAIN (1) P.C.B.MAIN (3) P.C.B.POWER TRANSFORMEROPERATION (11) P.C.B.OPERATION (8) P.C.B.OPERATION (6) P.C.B.OPERATION (3) P.C.B. OPERATION (4) P.C.B.OPERATION (5) P.C.B.OPERATION (9) P.C.B.OPERATION (2) P

34、.C.B.OPERATION (10) P.C.B.Top viewFront view1234567891011121314151617181920212291121221310121214161718201915345876 INTERNAL VIEW SERVICE PRECAUTIONS / 時注意事項Safety measures Some internal parts in this product contain high voltages and are dangerous. Be sure to take safety measures during servicing, s

35、uch as wearing insulating gloves. Note that the capacitors indicated below are dangerous even after the power is turned off because an electric charge remains and a high voltage continues to exist there.Before starting any repair work, connect a discharging resistor (5k-ohms/10W) to the terminals of

36、 each capacitor indicated below to discharge electricity. The time required for discharging is about 30 seconds per each.C134, C135 on MAIN (1) P.C.B.For details, refer to “PRINTED CIRCUIT BOARDS: MAIN (1) P.C.B.”.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。 下記電源 OFF 後電荷残、高電圧維持危険。修理作業前放電用抵抗（5 k /10 W）下記各端子間接続

37、放電。放電所用時間各約 30 秒間。MAIN（1）P.C.B. C134、C135詳 “PRINTED CIRCUIT BOARDS ： MAIN（1）P.C.B.”参照。A-S500A-S30012A-S500/A-S300A-S500/A-S300Top coverFront panel unit Knob VOLVOLKnob INPUTINPUTKnob TCTCKnob SP13SP13Cap POWERPOWERCap DIRECTDIRECTFrame topTOP(A-S500)Support topTOP(A-S300) DISASSEMBLY PROCEDURES / 分解

38、手順Fig. 1(Remove parts in the order as numbered.)Disconnect the power cable from the AC outlet.1. Removal of Top Covera. Remove 4 screws (), 4 screws () and screw (). (Fig. 1)b. Remove the top cover. (Fig. 1)2. Removal of Front Panel Unita. (A-S500)Remove screw (), screw () and then remove the frame

39、top. (Fig. 1)(A-S300)Remove screw () and then remove the support top. (Fig. 1)b. Pull out the knobs and caps. (Fig. 1)c. Remove 7 screws (). (Fig. 1)d. Remove the front panel unit. (Fig. 1)（番号順部品取外。 ）AC 電源、電源抜。1. 外方a. 4 本、 4 本、 1 本外。（Fig. 1）b. 取外。 （Fig. 1）2. 外方a. （A-S500） 1 本、 1 本外、 TOP取外。 （Fig. 1）（

40、A-S300） 1 本外、 TOP 取外。（Fig. 1）b. 、取外。 （Fig. 1）c. 7 本外。 （Fig. 1）d. 前方取外。（Fig. 1）A-S500A-S30013A-S500/A-S300A-S500/A-S300Sub-chassis unit HookHookFUNCTION (1) P.C.B.DOCK P.C.B.FUNCTION (2) P.C.B.FUNCTION (3) P.C.B.CB101CB108CB503CB2CB21CB14CB506CB504CB505CB706CB853CB854CB851Fig. 3Fig. 23. Removal of Su

41、b-chassis Unita. Remove 2 screws (). (Fig. 2)b. Remove CB101, CB108, CB503-505, CB706, CB851 and CB853-854. (Fig. 2)c. Release 2 hooks and then remove the sub-chassis unit. (Fig. 2)4. Removal of FUNCTION (1)(3) and DOCK P.C.B.sa. Remove 8 screws (). (Fig. 3)b. Remove screw () and screw (). (Fig. 2)c

42、. Remove CB2, CB14, CB21 and CB506. (Fig. 2)d. Remove the FUNCTION (1)(3) P.C.B.s and DOCK P.C.B. together. (Fig. 2)3. 外方a. 2 本外。 （Fig. 2）b. CB101、CB108、CB503 505、CB706、CB851、CB853 854 外。 （Fig. 2）c. 2 箇所外、取外。 （Fig. 2）4. FUNCTION (1) (3)、DOCK P.C.B. 外方a. 8 本外。 （Fig. 3）b. 1 本、 1 本外。 （Fig. 2）c. CB2、CB1

43、4、CB21、CB506 外。 （Fig. 2）d. FUNCTION（1）（3）P.C.B. DOCK P.C.B. 一緒取外。 （Fig. 2）14A-S500/A-S300A-S500/A-S300Ground lead線Sub-chassis unit Rubber sheet and cloth布 Fig. 4When checking the P.C.B.s: Put the rubber sheet and cloth over this unit. Then place the sub-chassis unit on the cloth and check it. (Fig.

44、4) Connect the ground point of the sub-chassis unit to the chassis with a ground lead or the like. (Fig. 4) Reconnect all cables (connectors) that have been disconnected. When connecting the flexible flat cable, be careful with polarity.P.C.B. 場合： 本機上布敷、上置。 （Fig. 4） 線等接続。 （Fig. 4） 外（）接続。 接続際、極性注意。15

45、A-S500/A-S300A-S500/A-S300Chassis coverRubber sheet and cloth布MAIN (1) P.C.B.Fig. 5When checking the MAIN (1) P.C.B.: Spread the rubber sheet and the cloth. Then place this unit on the cloth upside down. (Fig. 5) Remove 6 screws () and then remove the chassis cover. (Fig. 5)MAIN（1）P.C.B. 場合： 布敷、 本機上

46、下反転置。（Fig. 5） 6本外取外。（Fig. 5）16A-S500/A-S300A-S500/A-S300When the following parts are replaced, the firmware must be updated to the latest version.FUNCTION P.C.B.Microprocessor (IC502: FUNCTION P.C.B.) Confirmation of firmware versionBefore and after updating the firmware, check the firmware version

47、by using the self-diagnostic function menu.Start up the self-diagnostic function, have the firmware version displayed, and note them down.(See “SELF-DIAGNOSTIC FUNCTION”)* When the firmware version is different from written one, perform the UPDATING FIRMWARE from the beginning. Initializing the back

48、-up IC(EEPROM: IC503 of the FUNCTION P.C.B.)After updating the firmware, the back-up IC MUST be initialized by the following procedure to have proper memorization of the set up information.Start up the self-diagnostic function.(See “SELF-DIAGNOSTIC FUNCTION”)Set the SPEAKERS selector to the “A” posi

49、tion, press the “ ” (power) key to turn off the power once and press the “ ” (power) key to turn on the power again.Then the back-up IC is initialized. Required Tools Firmware downloader programFlashSta.exe FirmwareASx00_xxx.motASx00_xxx.id RS-232C cross cable “D-sub 9 pin female”(Specifications) RS

50、-232C conversion adaptor (Part No.: WR492800) UPDATING FIRMWARE / 書込下記部品交換場合、最新必要。FUNCTION P.C.B.Microprocessor （IC502：FUNCTION P.C.B.） 確認前後、確認。起動表示、書。（ 参照） 、書込異場合、最初直。 IC 初期化（EEPROM：FUNCTION P.C.B. IC503）後、設定情報正常記憶、下記方法 IC 初期化必要。本機起動。（ 参照）SPEAKERS “A” 位置、 “ ”（）押電源切、 再 “ ”（）押電源入 IC 初期化。 必要 書込用FlashS