Yamaha-AS1000-int-sm(1) 维修电路原理图.pdf

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1、 CONTENTSTO SERVICE PERSONNEL . 2FRONT PANEL . 3REAR PANELS . 36REMOTE CONTROL PANELS. 6SPECIFICATIONS / 参考仕様. 7INTERNAL VIEW . 8SERVICE PRECAUTIONS /時注意事項 . 9DISASSEMBLY PROCEDURES / 分解手順. 918AMP ADJUSTMENT / 部調整. 19UPDATING FIRMWARE /書込. 2025SELF-DIAGNOSTIC FUNCTION /（自己診断機能）. 2628IC DATA . 2932PI

2、N CONNECTION DIAGRAMS. 3334BLOCK DIAGRAM. 35PRINTED CIRCUIT BOARDS. 3654SCHEMATIC DIAGRAMS. 5561REPLACEMENT PARTS LIST . 6383REMOTE CONTROL. 8485101091SERVICE MANUALSTEREO AMPLIFIERCopyright 2008 All rights reserved.This manual is copyrighted by YAMAHA and may not be copied orredistributed either in

3、 print or electronically without permission.P.O.Box 1, Hamamatsu, Japan 08.05A-S1000A-S1000RadioFans.CN 收音机爱 好者资料库2A-S1000A-S1000WALLOUTLETEQUIPMENTUNDER TESTAC LEAKAGETESTER OREQUIVALENTINSULATINGTABLEWARNING: CHEMICAL CONTENT NOTICE!This product contains chemicals known to the State of California

4、to cause cancer, or birth defects or other reproductiveharm.DO NOT PLACE SOLDER, ELECTRICAL/ELECTRONIC OR PLASTIC COMPONENTS IN YOUR MOUTH FOR ANYREASON WHAT SO EVER!Avoid prolonged, unprotected contact between solder and your skin! When soldering, do not inhale solder fumes or exposeeyes to solder/

5、flux vapor!If you come in contact with solder or components located inside the enclosure of this product, wash your hands beforehandling food.1. Critical Components InformationComponents having special characteristics are marked sand must be replaced with parts having specifications equalto those or

6、iginally installed.2. Leakage Current Measurement (For 120V Models Only)When service has been completed, it is imperative to verifythat all exposed conductive surfaces are properly insulatedfrom supply circuits.Meter impedance should be equivalent to 1500 ohms shuntedby 0.15F.Leakage current must no

7、t exceed 0.5mA.Be sure to test for leakage with the AC plug in both polarities.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 installed in this unit and solder joints aresoldered using the lead free solder.Among some types of

8、 lead free solder currently available,it is recommended to use one of the following types for therepair work.Sn + Ag + Cu (tin + silver + copper)Sn + Cu (tin + copper)Sn + Zn + Bi (tin + zinc + bismuth)Caution:As the melting point temperature of the lead free solder isabout 30C to 40C (50F to 70F) h

9、igher than that of the leadsolder, be sure to use a soldering iron suitable to each solder.About lead free solder / 無鉛 TO SERVICE PERSONNELFor U model“CAUTION”“F1: FOR CONTINUED PROTECTION AGAINST RISK OF FIRE, REPLACE ONLY WITH SAME TYPE 10A,125V FUSE.”For C modelCAUTIONF1:REPLACE WITH SAME TYPE 10

10、A, 125V FUSE.ATTENTIONF1:UTILISER UN FUSIBLE DE RECHANGE DE MME TYPE DE 10A, 125V.RadioFans.CN 收音机爱 好者资料库7A-S1000A-S1000435 (17-1/8)137 (5-3/8)465 (18-5/16)418 (16-7/16)25(1)22(7/8)16 (5/8)121 (4-3/4)371 (14-5/8)362 (14-1/4) SPECIFICATIONS / 参考仕様U . U.S.A. modelC . Canadian modelR . General modelT .

11、 Chinese modelK . Korean modelA . Australian modelB . British modelG . European modelL . Singapore modelJ. Japanese modelDIMENSIONS / 寸法図 Audio Section / 部Minimum RMS Output Power (Power Amp. Section) /定格出力 （部） (20 Hz to 20 kHz, 0.02 % THD)8 ohms .90 W + 90 W6 ohms . 105 W + 105 W4 ohms . 140 W + 14

12、0 WDynamic Power / (IHF)8/6/4/2 ohms . 105/135/190/220 WMaximum Output Power B, G models (1 kHz, 0.7 % THD, 4 ohms). 160 WMaximum Useful Output Power / 実用最大出力 (JEITA)R, T, K, L, J models (1 kHz, 10 % THD)8 ohms . 115 W4 ohms . 190 WPower Band Width / 8 ohms (MAIN L/R drive) .10 Hz to 50 kHzDynamic H

13、eadroom / 8 ohms . 0.67 dBIEC Output Power B, G models (1 kHz, 0.02 % THD)8 ohms . 90 W4 ohms . 145 WDamping Factor / (1 kHz, 8 ohms). 160 or moreMaximum Input Signal / 最大許容入力 (1 kHz)CD, etc. (0.5 % THD). 2.8 V or lessPHONO (0.003 % THD) MM . 120 mV or lessMC . 7 mV or lessFrequency Response / 周波数特性

14、CD, etc.Flat position, 5 Hz to 100 kHz . +0 / -3.0 dBFlat position, 20 Hz to 20 kHz . +0 / -0.3 dBRIAA Equalization Deviation / RIAA偏差 (20 Hz to 20 kHz)PHONO MM . 0.5 dBMC. 0.5 dBTotal Harmonic Distortion / 全高調波歪率 (20 Hz to 20 kHz)CD, etc. to SP OUT (90 W, 8 ohms) .0.015 % or lessPHONO MM (2 V, to R

15、EC) .0.005 % or lessMC (2 V, to REC) .0.05 % or lessIntermodulation Distortion / 混変調歪率 (Rated output, 8 ohms)CD, etc. to SP OUT . 0.02 %Signal to Noise Ratio / 信号対雑音比 (IHF-A Network) (Input shorted)CD, etc. (150 mV) .98 dB or morePHONO MM (5 mV) .93 dB or moreMC (500 V).85 dB or moreResidual Noise /

16、 残留 (IHF-A Network)FRONT L/R SP OUT . 73 V or less Control Section / 部Input Sensitivity/Input Impedance / 入力感度入力CD, etc. . 150 mV/47 k-ohmsPHONO MM . 2.5 mV/47 k-ohmsMC. 100 V/50 ohmsMAIN IN . 1 V/47 k-ohmsOutput Level/ Output Impedance / 入力電圧REC OUT . 150 mV/1.5 k-ohmsPRE OUT . 1 V/1.5 k-ohmsRated

17、Output Voltage / 出力電圧PRE OUT . 150 mV/1.5 k-ohmsREC OUT . 1 V/1.5 k-ohmsHeadphone Rated Output / 出力1 kHz, 150 mV, 0.2 % THD, 32 ohms . 23 mW / 100 ohmsChannel Separation / (1 kHz/10 kHz)CD, etc. (5.1 k-ohms terminated) .74/54 dB or morePHONO (Input shorted, Vol: -30 dB) MM . 90/77 dB or moreMC . 66/

18、65 dB or moreTone Control Characteristics / 特性BASSBoost/Cut (50 Hz) . 9 dBTurnover frequency. 350 HzTREBLEBoost/Cut (20 Hz) . 9 dBTurnover frequency. 3.5 kHzAudio Muting / . -20 dB (approx.) General / 総合Power Supply / 電源電圧U, C models .AC 120 V, 60 HzR, L models.AC 110/120/220/230-240 V, 50/60 HzT mo

19、del .AC 220 V, 50 HzK model .AC 220 V, 60 HzA model .AC 240 V, 50 HzB, G models .AC 230 V, 50 HzJ model . AC 100 V, 50/60 HzPower Consumption / 消費電力U, C, R, T, K, A, B, G, L models . 350 WJ model . 220 WMaximum Power Consumption / 最大消費電力 1 kHz, 10 % THD, 8 ohms . 700 WIdling Power Consumption / 時消費電

20、力. 80 WOff-state Power Consumption / OFF時消費電力. 0 WDimensions (W x H x D) / 寸法 （幅高奥行）. 435 x 137 x 465 mm (17-1/8” x 5-3/8” x 18-5/16”)Weight / 質量. 22.0 kg (48 lbs. 8 oz)Finish / 仕上Black color . U, C, R, T, K, A, B, G, L, J modelsSilver color . U, C, R, T, K, A, B, G, L, J modelsAccessories / 付属品Remo

21、te control x 1, Battery (R6, AA, UM-3) x 2, Power cable (2 m) x 1*Specifications are subject to change without notice due to productimprovements. 参考仕様外観予告変更。Unit: mm (inch)単位：mm （）8A-S1000A-S1000 INTERNAL VIEW1 FRONT (14) P.C.B. (R, L models)2 FUNCTION (3) P.C.B.3 FRONT (13) P.C.B.4 MAIN (2) P.C.B.5

22、 FUNCTION (2) P.C.B.6 POWER TRANSFORMER7 MAIN (3) P.C.B.8 MAIN (1) P.C.B.9 FRONT (12) P.C.B.0 FRONT (11) P.C.B.A FRONT (9) P.C.B.B FRONT (2) P.C.B.C FRONT (1) P.C.B.D FRONT (3) P.C.B.E FRONT (6) P.C.B.F FRONT (5) P.C.B.G FRONT (4) P.C.B.H FRONT (7) P.C.B.I FUNCTION (1) P.C.B.J FRONT (10) P.C.B.23579

23、60148Top viewFront viewRear viewJGFEAIHBCDA-S10009 DISASSEMBLY PROCEDURES / 分解手順(Remove parts in the order as numbered.)Disconnect the power cable from the AC outlet.1. Removal of Panel Side L/Ra. Remove 2 screws (1), 2 coned disc spring L and 2washers side. (Fig. 1)b. Lift the panel side L upward a

24、nd release 3 hooks. Thenremove the panel side L. (Fig. 1)c. Remove 2 screws (2), 2 coned disc spring L and 2washers side. (Fig. 1)d. Lift the panel side R upward and release 3 hooks. Thenremove the panel side R. (Fig. 1)2. Removal of Top Covera. Remove 7 screws (3), 2 screws (4) and 2 screws(5). (Fi

25、g. 1)b. Remove the top cover. (Fig. 1)3. Removal of Front Panel*Prepare an Allen wrench (2 mm) for removal ofknob unit.a. Loosen lock set screw to remove the knob VOL unit.(Fig. 1)b. Loosen lock set screw to remove the knob SEL unit.(Fig. 1)c. Loosen each lock set screw to remove 3 knob TC unit.(Fig

26、. 1)d. Remove 8 screws (6). (Fig. 1)e. Set the “POWER ON/OFF” switch to the ON position.f.Remove the front panel forward gradually using carenot to cause damage the switches. (Fig. 1)?1. L/R外方? 1? ? ? ? 2? ? ? ?2. 外方? 3?4?5? ? ?3. 外方? ? ? ? ? ? ? ? 6? ? ? ? ?Fig. 1 SERVICE PRECAUTIONS / 時注意事項安全対策? ?

27、 ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?Safety measuresSome internal parts in this product contain high volt-ages and are dangerous. Be sure to take safety mea-sures during servicing, such as wearing insulatinggloves.Note that positions indicated below are dangerous evenafter the power is turned off bec

28、ause an electric chargeremains and a high voltage continues to exist there.Before starting any repair work, perform discharge byconnecting a discharge resistor (5k-ohms/10W) be-tween terminals at following positions. The time re-quired for discharging is about 30 seconds.1. C308 on MAIN (3) P.C.B.2.

29、 C309 on MAIN (3) P.C.B.3. C335 on MAIN (3) P.C.B.4. C336 on MAIN (3) P.C.B.Refer to “PRINTED CIRCUIT BOARDS: MAIN (3) P.C.B.”.*When installing the knob unit, it is necessary to positionthem as specified. (Refer to “When installing the knobunit”.)? ? ? ? ?Panel side L?Panel side R?Washer side?Washer

30、 side?Coned disc spring L?Coned disc spring L?Front panel?Top cover?66313452Hook?Hook?POWER ON / OFF switch?Hook?Knob VOL unit?An Allen wrench?Knob SEL unit?Knob TC unit?2mmLock set screw?A-S100010Knob VOL unit?Slit?Cut?Lock set screw?Lock set screw?Lock set screw?Center position of BALANCE?VR501SW5

31、01VR504VOLUME MINVOLUME MAXKnob SEL unit?Knob TC unit?Front panel?0.50.75mm VOL取付場合：? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? SEL取付場合：? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? TC取付場合：? ? ? ? ? ? ? ? ? ? ? ? ? ? When installing the knob VOL unit:a. Turn the VOLUME (VR501) counterclockwisefully. (Fig. 2)b. Ma

32、tch the slit in the knob VOL unit with the“VOLUME MIN” position and install it in thatstate. (Fig. 2)*At this time, do not tighten the lock set screw.c. Keep about 0.5 mm to 0.75 mm clearance fromthe front panel to knob VOL unit. (Fig. 2)d. Match the lock set screw position with the cut inVOLUME (VR

33、501) and tighten the lock set screw.e. After installation, perform following checks.Turn the knob VOL unit both directions tocheck that it does not rub against the frontpanel.Turn the knob VOL unit clockwise fully andcheck that the slit in it matches with the“VOLUME MAX” position.Turn the knob VOL u

34、nit counterclockwisefully and check that the slit in it matches withthe “VOLUME MIN” position. When installing the knob SEL unit:a. Turn the INPUT (SW501) so that the cut in itcomes at the top. (Fig. 2)b. Install the knob SEL unit with its lock set screwpositioned at the top. (Fig. 2)*At this time,

35、do not tighten the lock set screw.c. Keep about 0.5 mm to 0.75 mm clearance fromthe front panel to knob SEL unit. (Fig. 2)d. Match the lock set screw position with the cut inINPUT (SW501) and tighten the lock set screw.e. After installation, perform following checks.Turn the knob SEL unit in both di

36、rections tocheck that it does not rub against the frontpanel. When installing the knob TC unit*Use the same installation procedure for BASS,TREBLE and BALANCE.Described here is installation of BALANCE asan example.a. Turn the BALANCE (VR504) in both directionsand set it to the center position. (Fig.

37、 2)*VR504 stops at the center position when it isturned in both directions.b. Match the slit in the knob TC unit with the centerposition of BALANCE and install it in that state.(Fig. 2)*At this time, do not tighten the lock set screw.c. Keep about 0.5 mm to 0.75 mm clearance fromthe front panel to k

38、nob TC unit. (Fig. 2)d. Tighten the lock set screw of the knob TC unit.(Fig. 2)Fig. 2? ? ? ? ? ? ? ? ?e. After installation, perform following checks.Turn the knob TC unit in both directions tocheck that it does not rub against the frontpanel.Turn the knob TC unit counterclockwisefully and check tha

39、t the slit in it matches withthe “BALANCE L” position.Turn the knob TC unit clockwise fully andcheck that the slit in it matches with the“BALANCE R” position.11A-S1000A-S1000Fig. 34. ASSY外方? 7? 8? ? ? ? ? ?4. Removal of Front Frame Assya. Remove 4 screws (7) to remove the frame top. (Fig. 3)b. Remov

40、e 8 screws (8). (Fig. 3)c. Remove CB501, CB504, CB517, CB519, CB521 andSW1-2. (Fig. 3)d. Remove the front frame assy. (Fig. 3)78887Frame top?Front frame assy?Front frame assy?CB504CB517CB519CB521SW1SW2CB50112A-S1000A-S1000P.C.B.場合：? ? ? ? ? ? ? ?When checking the P.C.B.:Put the rubber sheet and clot

41、h over this unit. Thenplace the P.C.B.s upside down on the cloth andcheck it. (Fig. 4)Reconnect all cables (connectors) that have beendisconnected.In this unit, the ground of the front frame assy is con-nected to the chassis. When the front frame assy isremoved from the chassis, connect the ground p

42、ointto the chassis, using a ground lead wire or the like.(Fig. 4)Fig. 4Rubber sheet and cloth?Ground lead?Front frame assy?13A-S1000A-S1000Fig. 55. L/R外方? 9?0? ? ? ? A? ? ? ? ?B?C? ? ? ? ?5. Removal of Amplifier Unita. Remove 8 screws (9) and 2 screws (0). (Fig. 5)b. Remove the frame side L. (Fig. 5

43、)c. Remove 4 screws (A). (Fig. 5)d. Remove CB71-72, CB74, CB84 and CB406. (Fig. 5)e. Remove the amplifier unit L together with the heat sink.f.Remove 4 screws (B) and 4 screws (C). (Fig. 5)g. Remove CB52, CB54, CB64 and CB405. (Fig. 5)h. Remove the amplifier unit R together with the heatsink.6. 外方?

44、? ? D? ? ? ? E? ? ? ? ?6. Removal of Power Unita. Remove 4 legs by turning it counter clockwies. (Fig. 5)b. Remove 18 screws (D). (Fig. 5)c. Remove the bottom cover. (Fig. 5)d. Remove 4 screws (E). (Fig. 5)e. Remove CB21-22, CB24-26 and CB34. (Fig. 5)f.Remove the power unit. (Fig. 5)AA0999BBCCDDDDDE

45、ECB52CB74CB72CB84CB71CB405CB34CB406Frame side L?AMP unit R?AMP unit L?Bottom cover?Leg?Leg?CB54CB64CB21CB26CB22CB24POWER unit?CB2514A-S1000A-S1000 取付場合：? ? When installing the power unit:When installing the power unit, be very careful notto cause any damage to the cable at the bottomwith the end of

46、the screw. (Fig. 6)Fig. 6Cable?Front sideRear sideEnd of the screw?Bottom view15A-S1000A-S1000When checking the P.C.B.:Remove frame panels L/R.Put the rubber sheet and cloth over this unit. Thenplace the P.C.B. slantingly on the cloth and check it.(Fig. 7)Reconnect all cables (connectors) that have

47、beendisconnected.In this unit, the ground of the amplifier unit L/R isconnected to the chassis. When the amplifier unit L/Ris removed from the chassis, connect the groundpoint to the chassis, using a ground lead wire or thelike. (Fig. 7)It is also possible to check the amplifier unit L/R fromthe bot

48、tom. (Fig. 7)Fig. 7P.C.B.場合：? ? ? ? ? ? ? ? ? ? ?Rubber sheet and cloth?Cloth?Ground lead?Ground lead?AMP unit R?AMP unit R?AMP unit L?AMP unit L?16A-S1000A-S10007. FUNCTION （2） P.C.B.外方? F?G? ? ? ? ? ? ? ? ? ? ? ? ? ?7. Removal of FUNCITON (2) P.C.B.a. Remove 4 screws (F) and screw (G). (Fig. 8)b.

49、Remove CB401-404, CB407 and CB408. (Fig. 8)c. Remove the connector TR. (Fig. 8)d. Disconnect the cable (W4004) from the bottom. (Fig. 9)e. Remove FUNCTION (2) P.C.B. (Fig. 8)Fig. 8LLFFGJOPPMNHIKKCB27CB23CB2CB79CB59CB402CB403CB404CB401Frame side R?Connector TR?Solder?Barrier SP R?Barrier SP L?Speaker

50、 terminal L?Speaker terminal R?FUNCTION (2) P.C.B.FUNCTION (3) P.C.B.FRONT (11) P.C.B.CB408CB407FRONT (13) P.C.B.FRONT (12) P.C.B.Solder?17A-S1000A-S1000Fig. 98. Removal of Speaker Terminal L/Ra. Remove 2 screws (H) and 2 screws (I). (Fig. 8)b. Remove CB2, CB23 and CB79. (Fig. 8)c. Remove FUNCTION (