Yamaha-AS-801-Service-Manual 电路图 维修手册.pdf

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1、SERVICE MANUAL INTEGRATED AMPLIFIER A-S801 CONTENTS TO SERVICE PERSONNEL .2 IMPEDANCE SELECTOR .3 FRONT PANEL .3 REAR PANELS .45 REMOTE CONTROL PANEL .6 SPECIFICATIONS / 参考仕様 .67 INTERNAL VIEW .8 SERVICE PRECAUTIONS / 時注意事項 .8 DISASSEMBLY PROCEDURES / 分解手順 .911 UPDATING FIRMWARE / . 1214 SELF-DIAGNO

2、STIC FUNCTION / （自己診断機能） . 1528 POWER AMPLIFIER ADJUSTMENT / 調整 .2930 IC DATA .3133 PIN CONNECTION DIAGRAMS .3435 BLOCK DIAGRAM .36 WIRING DIAGRAM .37 PRINTED CIRCUIT BOARDS .3855 SCHEMATIC DIAGRAMS .5770 REPLACEMENT PARTS LIST .7181 REMOTE CONTROL .82 1013 15 15.01IP A-S801 RadioFans.CN 收音机爱 好者资料库

3、2 A-S801 A-S801 TO SERVICE PERSONNEL 1. Critical Components Information Components having special characteristics 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 complete

4、d, it is imperative to verify that all exposed conductive surfaces are properly insulated from supply circuits. Meterimpedanceshouldbeequivalentto1500ohmsshunted by0.15F. WALL OUTLET EQUIPMENT UNDER TEST AC LEAKAGE TESTER OR EQUIVALENT INSULATING TABLE Leakagecurrentmustnotexceed0.5mA. Besuretotestf

5、orleakagewiththeACpluginbothpolarities. For U model “CAUTION” “F1:FORCONTINUEDPROTECTIONAGAINSTRISKOFFIRE,REPLACEONLYWITHSAMETYPE8A, 125VFUSE.” For C model CAUTION F1:REPLACEWITHSAMETYPE8A,125VFUSE. ATTENTION F1:UTILISERUNFUSIBLEDERECHANGEDEMMETYPEDE8A,125V. WARNING: CHEMICAL CONTENT NOTICE! This pr

6、oduct 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 WHATSOEVER! Avoid prolonged, unprotected contact between solder and your skin! When so

7、ldering, do not inhale solder fumes or expose eyes to solder/fl ux vapor! If you come in contact with solder or components located inside the enclosure of this product, wash your hands before handling food. About lead free solder / 無鉛 All of the P.C.B.s installed in this unit and solder joints are s

8、oldered 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) Caution: As the melting point tempera

9、ture of the lead free solder is about 30 C to 40 C (50 F to 70 F) higher than that of the lead solder, be sure to use a soldering iron suitable to each solder. 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。 RadioFans.CN 收音机爱 好者

10、资料库 3 A-S801 A-S801 IMPEDANCE SELECTOR IMPEDANCE SELECTOR WARNING: Do not change the setting of the IMPEDANCE SELECTOR switch when the unit power is switched on, as doing so may damage the unit. FRONT PANEL A-S801 RadioFans.CN 收音机爱 好者资料库 4 A-S801 A-S801 REAR PANELS A-S801 (U model) A-S801 (T model)

11、A-S801 (K model) 5 A-S801 A-S801 A-S801 (B, G models) A-S801 (L model) A-S801 (J model) 6 A-S801 A-S801 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) .100 W + 100 W (6 ohms, 20 Hz to 20 kHz, 0.038 % THD) U,T,K,B,

12、G,Jmodels .120 W + 120 W Dynamic Power Per Channel / (IHF) (8 / 6 / 4 / 2 ohms) .140/170/225/290W MAX Power Per Channel B,Gmodels (1 kHz, 0.7 % THD, 4 ohms) .160 W IEC Power B,Gmodels (1 kHz, 0.019 % THD, 8 ohms) .115W Power Band Width / (0.04 % THD, 50 W, 8 ohms) . 10 Hz to 50 kHz Damping Factor /

13、(SPEAKER-A) (1 kHz, 8 ohms) .240 or more Maximum Effective Output Power / 実用最大出力 (JEITA) (1 kHz, 10 % THD) T,L,Jmodels(8ohms) .145Wh Jmodel(6ohms) .170 Wh Input Sensitivity/Input Impedance / 入力感度入力 PHONO(MM) .3.0mV/47k-ohms CD, etc. .200mV/47k-ohms Maximum Input Signal / 最大許容入力 (1kHz) PHONO (MM) (0.

14、03 % THD) .45 mV or more CD, etc. (0.5 % THD) .2.2 V or more Output Level/Output Impedance / 出力電圧出力 REC OUT . 200 mV / 1.0 k-ohms or less Subwoofer OUT .3.5 V / 1.2 k-ohms (Cut off Frequency: 100 Hz) Headphone Jack Rated Output/Impedance / 出力出力 CD, etc. (Input, 1 kHz, 200 mV, 8 ohms) .470 mV / 470 o

15、hms Frequency Response / 再生周波数帯域 CD, etc. (20 Hz to 20 kHz) .0 0.5 dB CD, etc. Pure DIRECT ON (10 Hz to 100 kHz) .0 1.0 dB RIAA Equalization Deviation / RIAA 偏差 PHONO (MM) . 0.5 dB Total Harmonic Distortion / 全高調波歪率 (20Hzto20kHz) PHONO (MM) to REC OUT (2.5 V) .0.03 % or less CD, etc. to SP OUT (50 W

16、, 8 ohms) .0.019 % or less Signal to Noise Ratio / 信号対雑音比 (IHF-ANetwork) PHONO (MM) (5 mV Input shorted) .82 dB or more CD, etc. (Pure DIRECT ON) (200 mV input shorted) .99dBormore CD DIRECT ON .104 dB or more Residual Noise / 残留(IHF-ANetwork) . 40 V Channel Separation / CD, etc. (Input 5.1 k-ohms s

17、horted) 1kHz .65dBormore 10 kHz .50dBormore REMOTE CONTROL PANEL RAS15 7 A-S801 A-S801 Accessories / 付属品 Remote control.x 1 Battery(R6,AA,UM-3) .x 2 Power cable (2 m) .x 1 * Specifi cations are subject to change without notice. 参考仕様外観、製品改良予告変更 。 U .U.S.A. and Canadian models T.Chinese model K .Korea

18、n model B .British model G . European model L. Singapore model J .Japanese model DIMENSIONS / 寸法図 Tone Control Characteristics / 特性 BASS Boost/Cut(20Hz).10dB Turnover frequency .400Hz TREBLE Boost/Cut(20kHz) .10dB Turnover frequency .3.5kHz Continuous Loudness Control / Attenuation / 最大補正率 (1 kHz) .

19、-30 dB USB (Tybe B) / USB（B 端子） .Supported USB 2.0 Supported Digital Audio Format / 対応 COAXIAL / OPTICAL PCM(2-ch) .192/176.4/96/88.2/48/44.1kHz USB PCM(2-ch) .384/352.8/192/176.4/96/88.2/48/44.1kHz DSD .2.8224/5.6448MHz PCM Word Depth / 対応長 .16 / 24 bit Gain Tracking Error / GAIN (0 to -99 dB) .0.5

20、 dB or less General / 総合 Power Supply / 電源電圧 U model .AC 120 V, 60 Hz T model .AC 220 V, 50 Hz K model .AC 220 V, 60 Hz B, G models .AC 230 V, 50 Hz L model .AC 220240 V, 50/60 Hz J model .AC 100 V, 50/60 Hz Power Consumption / 消費電力 U,T,K,B,G,Jmodels .270 W L model .230 W Standby Power Consumption /

21、 待機時消費電力 .0.5 W Dimensions (W x H x D) / 寸法（幅 高 奥行） .435 x 152 x 387 mm (17-1/8 x 6 x 15-1/4) Weight / 質量 .12.0 kg (26.7 lbs.) Finish / 仕上 Blackcolor .U,G,L,Jmodels Silvercolor .U,T,K,B,G,L,Jmodels Top view Unit: mm (inch) 単位 ： mm（） 335 (13-1/4)50 (2) 20.5 (3/4) 25.5 (1) 387 (15-1/4) 341 (13-3/8) 55

22、 (2-1/8) 46 (1-3/4) 240 (9-1/2) 60 Front view 435 (17-1/8) 152 (6) 130 (5-1/8) 21 (7/8) 8 A-S801 A-S801 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, such as wea

23、ring 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 (5 k-ohms/10 W) to the terminals of each c

24、apacitor 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

25、接続放電。 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 MAIN (8) b MAIN (2) c FUNCTION (4) d DIGITAL e MAIN (6) f FUNCTION (1) g FUNCTION (2) h FUNCTION (3) i MAIN (5) j MAIN (1) k MAIN (4) l POWER TRANSFORMER m OPERATION (7) n OPERATION (4) o OPERATION (3) p OP

26、ERATION (1) q OPERATION (2) r OPERATION (6) s OPERATION (5) Top view Front view 13782 mnop 456 rs j9kl q 9 A-S801 A-S801 DISASSEMBLY PROCEDURES / 分解手順 (Remove parts in the order as numbered.) Disconnect the power cable from the AC outlet. 1. Removal of Top Cover a. Remove 4 screws (1), 4 screws (2)

27、and screw (3). (Fig. 1) b. Remove the top cover. (Fig. 1) 2. Removal of Front Panel Unit a. Remove screw ( ), screw ( ) and then remove the top frame.(Fig. 1) b. Pull out the knobs and cap. (Fig. 1) c. Remove 7 screws ( ). (Fig. 1) d. Remove the front panel unit. (Fig. 1) （番号順部品外。 ） AC 電源、電源抜。 1. 外方

28、 a. 1 4 本、2 4 本、3 1 本外 。 （Fig. 1） b. 取外。 （Fig. 1） 2. 外方 a. 1 本、 1 本外、 取外。 （Fig. 1） b. 、取外。 （Fig. 1） c. 7 本外。 （Fig. 1） d. 前方取外。 （Fig. 1） Fig. 1 Front panel unit Knob VOLUME VOLUME Knob INPUT INPUT Knob BASS/TREBLE/BAL./LOUD. BASS/TREBLE/BAL./LOUD. Knob SPEAKERS OFF/A/B/A+B SPEAKERS OFF/A/B/A+B Cap PO

29、WER POWER Top frame Top cover 10 A-S801 A-S801 Sub-chassis unit Hook CB706 CB101 CB105 Hook CB853 CB2 CB21 FUNCTION (1) P.C.B. FUNCTION (2) P.C.B. FUNCTION (3) P.C.B. CB506 CB505 DIGITAL P.C.B. CB508 CB309 CB302 CB308 3. Removal of Sub-chassis Unit a. Remove 2 screws ( ). (Fig. 2) b. Remove CB505, C

30、B508, CB706 and CB853. (Fig. 2) c. Release 2 hooks and then remove the sub-chassis unit. (Fig. 2) 4. Removal of DIGITAL P.C.B. a. Remove 3 screws (9). (Fig. 3) b. Remove 3 screws (j). (Fig. 2) c. Remove CB21, CB302, CB308 and CB309 and then remove the DIGITAL P.C.B. (Fig. 2) 5. Removal of DIGITAL P.

31、C.B. a. Remove 7 screws (k). (Fig. 3) b. Remove screw (l) and screw (m). (Fig. 2) c. Remove CB2, CB101, CB105 and CB404 and then remove the FUNCTION (1)(3) P.C.B. (Fig. 2) 3. 外方 a. 2 本外。 （Fig. 2） b. CB505、 CB508、 CB706、 CB853 外。 （Fig. 2） c. 2 箇所外、取外 。 （Fig. 2） 4. DIGITAL P.C.B. 外方 a. 9 3 本外。 （Fig. 3

32、） b. j 3 本外。 （Fig. 2） c. CB21、 CB302、 CB308、 CB309 外、 DIGITAL P.C.B. 外。 （Fig. 2） 5. FUNCTION (1) (3) P.C.B. 外方 a. k 7 本外。 （Fig. 3） b. l 1 本、m 1 本外。 （Fig. 2） c. CB2、CB101、CB105、CB404 外、FUNCTION (1) (3) P.C.B. 一緒取外。 （Fig. 2） Fig. 2 Fig. 3 11 A-S801 A-S801 Ground lead nd lead 線 b-chassis unit bber shee

33、t and cloth 布 When checking the P.C.B.s: Put the rubber sheet and the cloth over this unit, Then place the sub-chassis unit on the cloth and check it. (Fig. 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) t

34、hat have been disconnected. When connecting the fl exible fl at 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 。 Fig. 4 12 A-S801 A-S801 UPDATING FIRMWARE / When the following parts are replaced, the fi rmware must be updated to the latest version. FU

35、NCTION P.C.B. DIGITAL P.C.B. Confi rmation of fi rmware version Before and after updating the fi rmware, check the fi rmware version by using the self-diagnostic function menu. Start up the self-diagnostic function, have the fi rmware version indicated, and note them down. (For details, refer to “SE

36、LF-DIAGNOSTIC FUNCTION”) * When the fi rmware version is different from written one after updating, perform the updating procedure again from the beginning. Factory preset After updating the fi rmware, revert to factory presets with the following procedure to properly store the setup information. Start up the self-diagnostic function. (For details, refer to “SELF-DIAGNOSTIC FUNCTION”) Set the “SPEAKERS” selector to the “A” position, press the “z” (power) switch to turn off the power once and p