Yamaha-YSTSW315-sub-sm 维修电路原理图.pdf

IMPORTANT NOTICEThis manual has been provided for the use of authorized YAMAHARetailers and their service personnel.It has been assumed that basic service procedures inherent to the industry,and more specifically YAMAHA Products, are already known andunderstood by the users, and have therefore not been restated.WARNING:Failure to follow appropriate service and safetyprocedures when servicing this product may result inpersonal injury, destruction of expensive components,and failure of the product to perform as specified. Forthese reasons, we advise all YAMAHA product ownersthat any service required should be performed by anauthorized YAMAHA Retailer or the appointed servicerepresentative.IMPORTANT:The presentation or sale of this manual to any individualor firm does not constitute authorization, certification orrecognition of any applicable technical capabilities, orestablish 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 departmentsof YAMAHA are continually striving to improve YAMAHA products.Modifications are, therefore, inevitable and specifications are subject tochange without notice or obligation to retrofit. Should any discrepancyappear to exist, please contact the distributors Service Division.WARNING:Static discharges can destroy expensive components.Discharge any static electricity your body may haveaccumulated by grounding yourself to the ground buss inthe unit (heavy gauge black wires connect to this buss).IMPORTANT:Turn the unit OFF during disassembly and partreplacement. Recheck all work before you apply powerto the unit.I CONTENTSTO SERVICE PERSONNEL . 2SPECIFICATIONS / 参考仕様 . 3INTERNAL VIEW . 3BLOCK DIAGRAM. 4REAR PANELS . 45DISASSEMBLY PROCEDURES / 分解手順 . 67ADJUSTMENTS / 調整 . 810PRINTED CIRCUIT BOARD . 1112SCHEMATIC DIAGRAM . 13PARTS LIST. 1523YST-SW315100855P.O.Box 1, Hamamatsu, JapanSERVICE MANUALSUBWOOFER SYSTEMYST-SW315RadioFans.CN 收音机爱 好者资料库YST-SW3152YST-SW315WALLOUTLETEQUIPMENTUNDER TESTAC LEAKAGETESTER OREQUIVALENTINSULATINGTABLEI TO SERVICE PERSONNEL1. Critical Components InformationComponents having special characteristics are marked sand must be replaced with parts having specifications equalto those originally 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.GMeter impedance should be equivalent to 1500 ohm shuntedby 0.15F.“CAUTION”“F1: FOR CONTINUED PROTECTION AGAINST RISK OF FIRE, REPLACE ONLY WITH SAME TYPE 6A, 125V FUSE.”CAUTIONF1: REPLACE WITH SAME TYPE 6A, 125V FUSE.ATTENTIONF1: UTILISER UN FUSIBLE DE RECHANGE DE MEME TYPE DE 6A, 125V.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 manufacturing process except soldering of the P.C.B. assy contains LEAD. In addition, otherelectrical/electronic and /or plastic (where applicable) components may also contain traces of chemicals found by theCalifornia Health and Welfare Agency (and possibly other entities) to cause cancer and/or birth defects or other reproductiveharm.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 or exposeeyes to solder/flux vapor!If you come in contact with solder or components located inside the enclosure of this product, wash your hands beforehandling food.製品使用基板付、Sn+Ag+Cu （錫+銀+銅） 合金無鉛使用。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。All P.C.B.s used for this product are soldered with lead-free soldering material which is an alloy of Sn+Ag+Cu (tin+ silver + copper).Among some types of 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:1. As the melting point temperature of the lead-free solderis about 30C to 40C (50F to 70F) higher than that ofthe lead solder, be sure to use a soldering iron suitableto each solder.2. If lead solder must be used, be sure to remove lead-free solder from each terminal section of the parts to bereplaced and from the area around it completely beforesoldering, or make sure that the lead-free solder andlead solder melt together fully.About lead-free solder / 無鉛RadioFans.CN 收音机爱 好者资料库YST-SW3153YST-SW315I SPECIFICATIONS / 参考仕様Type / 型式 . Advanced Yamaha Active Servo TechnologyOutput Power / 出力. 250 W (100 Hz, 5 , 10% T.H.D.)Input Sensitivity / 入力感度INPUT1 (SP) .1 V (50 Hz, 250 W / 5 , L + R)INPUT2 (PJ) .50 mV (50 Hz, 250 W / 5 , L + R)Input Impedance / 入力INPUT1 (SP) . 2.2 kINPUT2 (PJ) . 12 kFrequency Response / 再生周波数帯域 .20 Hz to 160 HzDriver / .10 (25 cm) cone, Magnetic Shielding TypeInput Section / 入力部INPUT1. Speaker TerminalINPUT2. RCA Pin JackOperation Section / 操作部Front Panel.STANDBY/ON Switch, B.A.S.S. Switch, VolumeControl, High Cut Control, LED IndicatorRear Panel .Power Switch, Auto Standby Switch (HIGH /LOW / OFF), Phase Switch (NORM / REV),Voltage Selector (R, T, K models only)Power Supply / 電源U, C models .AC 120 V, 60 HzA model .AC 240 V, 50 HzB, G models .AC 230 V, 50 HzR, T, K models .AC 240 / 220 / 120 / 110 V, 50/60 HzJ model. AC 100 V, 50/60 HzPower Consumption / 消費電力U, C, A, B, G, R, T, K models . 80 WJ model. 100 WStandby Power Consumption / 待機時消費電力 . 0.5 WDimension / 外形寸法 (W x H x D) .350 x 430 x 382 mm (13-3/4 x 16-15/16 x 15-1/16)Weight / 質量 . 19 kg (41 lbs. 14 oz.)FinishCherry Color. U, C, A, B, G, R, T, K, J modelsBlack Color . U, C, A, B, G, R, T, J modelsAccessories / 付属品Subwoofer Cable (3 m) x 1 (J model), Speaker cable (4 m) x 2 (Jmodel), Nonskid Pad x 4* Specifications are subject to change without notice due to productimprovements. 参考仕様外観予告変更。U . U.S.A. modelC . Canadian modelA . Australian modelB . British modelG . European modelR . General modelT . Chinese modelK . Korean modelJ. Japanese model DIMENSIONS / 寸法図I INTERNAL VIEW11 MAIN (8) P.C.B.2 MAIN (4) P.C.B.3 MAIN (2) P.C.B.4 MAIN (10) P.C.B.5 MAIN (3) P.C.B.6 MAIN (1) P.C.B.7 MAIN (5) P.C.B.8 MAIN (11) P.C.B.9 POWER TRANSFORMER0 MAIN (6) P.C.B.237890456350(13-3/4)382(15-7/16)355(14)27(1-1/16)Unit: mm (inch)単位 ： mm （） 350(13-3/4)80(3-1/8)430(16-15/16)YST-SW3154YST-SW315IC11AIC11BIC7AAUTO STANDBYSW2AUTO POWERON/OFF CIRCUITVR1VOLUMEL.P.F.6dB/octB.P .F.Q201204L.P.F.12dB/oct36158IC7BIC3Q22, 23432D202D9D201Q2062HIGH CUTVR2PROTECTIONHLOFFOFFLHR252C227TIMERIC201MUSICSENSORIC484637Q205+REGULATORIC202Q209LR+INPUT 1LRINPUT 2LR+OUTPUTIC10A7876SW1PHASESELECTIC10B432B.A.S.S.SELECTSW3+PRE DRIVEQ210Q28, 29POWER DRIVEQ16A/C, 26A/CLIMITERRY1IC8Q25D12, 13, 19Q1821D6, 14, 33, 340.1Q1C, 17C, 24AQ27, 31PS AMPQ1A, 17A, 24CQ30, 32PS AMPB+BH.P.F.12dB/oct+1212REGULATORPOWER SUPPLYD2IC6IC1F1POWERSW5+BBPOWER SUPPLYD1STANDBY/ONSW4(R, T, K models only)REGULATORQ207, 208D203SUB POWER SUPPLYD11RY2T1+DRIVER67A.N.I.CQ37, 38D36I BLOCK DIAGRAMI REAR PANELSA modelU, C modelsYST-SW3155YST-SW315B, G modelsT modelJ modelK modelR modelYST-SW3156YST-SW315I DISASSEMBLY PROCEDURE / 分解手順（番号順部品取外。）AC電源、電源抜。1. 外方a. 4本外、取外。 （Fig. 1）b. 4本外、取外。 （Fig. 1）c. 端子接続外。 （Fig. 1） (Remove parts in the order as numbered.)Disconnect the power cable from the AC outlet.1. Removal of Drivera. Remove 4 screws (1) and then remove the Base. (Fig. 1)b. Remove 4 screws (2) and then remove the Driver.(Fig. 1)c. Disconnect the connector connected to the terminal ofthe Driver. (Fig. 1)Fig. 2Fig. 12. Assy外方a. 4本外。 （Fig. 2） 取外六角 （2.5mm） 使用。b. Assy引出、CB4外。（Fig. 2）2. Removal of Front Panel Assya. Remove 4 screws (3). (Fig. 2)* Use an Allen wrench (2.5mm) to unscrew the FrontPanel Assy.b. Pull out the front panel assy and disconnect theconnector (CB4). (Fig. 2)Driver22Base11ConnectorCB4 Front Panel AssyAssy33YST-SW3157YST-SW315Fig. 33. Assy外方a. 8本外。 （Fig. 3） 取外矢印 （） 印刷。b. Assy引出。 （Fig. 3）c. 2本外。 （Fig. 3） 取外矢印 （） 印刷。d. 外。 （Fig. 3）e. CB9、CB10外。 （Fig. 3）3. Removal of Rear Panel Assya. Remove 8 screws (4). (Fig. 3)* Screws (4) are identified with arrow marks ().b. Pull out the rear panel assy. (Fig. 3)c. Remove 2 screws (5). (Fig. 3)* Screws (5) are identified with arrow marks ().d. Remove the cover. (Fig. 3)e. Disconnect the connectors (CB9 and CB10). (Fig. 3)When Checking the P.C.B.:Connect all the connectors removed duringdisassembly back to the original positions.Spread cloth first and place the rear panel assyon it. (Fig. 4)P.C.B.場合 分解際外元通接続。 布敷、上Assy置。 （Fig. 4）Fig. 4Rear Panel Assy Assy4554Coverto CB4to CB9to CB10Rubber Sheet and Cloth布Note:Replace this Bush (V7324600) with the new article when remove the Rear Panel Assy.注意 ： Assy外場合、 （V7324600） 新品交換。 YST-SW3158YST-SW315I ADJUSTMENTS / 調整G Confirmation of Power Amp operationFor the power amplifier which has been repaired, it isabsolutely necessary to confirm that a correctwaveform is obtained at points indicated by A and B inthe schematic diagram according to the followingprocedure.Devices requiredSignal generator8 or 6 load resistorOscilloscope (dual trace type)Connection1) Connect the output signal from the signal generator tothe input terminal of the unit.2) Disconnect the connector terminal connected to thespeaker unit and reconnect it to the load resistor.3) Connect the HOT side of the oscilloscope CH1 probe tothe point A or B indicated in the figure and the GND sideto the GND of the main unit.4) Connect the oscilloscope CH2 input to the red side ofthe connector cable, which is connected with the loadresistor.At this time, the GND terminal of CH2 must be leftunconnected.Setting1) Set the signal generator to the sine wave, 100 Hz andminimum output level settings.2) Set the volume of the unit to the minimum position.3) Turn on the power to the unit.4) Adjust the output level of the signal generator and thevolume of the unit so that the output level observed atoscilloscope CH2 is 28 Vp-p.Waveform observationWith the settings made as described above, observethe waveform obtained at CH1 for judgment.NormalPoint A(Cathode of D29)V : 20V/divH : 2 msec/divDC range1 : 1 probeNormalPoint B(Anode of D31)V : 20 V/divH : 2 msec/divDC range1 : 1 probeAbnormal+B or GND levelBecomes constantAbnormal-B or GND levelBecomes constant動作確認修理場合、下記手順従、回路図示A点B点正波形得必確認。必要機器信号発生器86負荷抵抗 （2現象）接続1） 信号発生器出力信号本機入力端子接続。2） 接続端子外、負荷抵抗接続。3） CH1端子HOT側図示A点B点接続、GND側本機GND接続。4） CH2HOT端子、負荷抵抗接続赤側接続。注意：時、CH2GND端子接続。設定1） 信号発生器正弦波、100 Hz、最低出力設定。2） 本機最小設定。3） 本機電源入。4） 信号発生器出力本機調整、CH2観測出力28 Vp-p。波形観測上記設定、CH1得波形観測判断。異常-BGND一定。異常+BGND一定。正常B点 （D31）V：20 V/divH：2 msec/divDC1：10V0V正常A点 （D29）V：20 V/divH：2 msec/divDC1：1YST-SW3159YST-SW315G Idling AdjustmentTo stabilize operation of the amplifier, turn ON the powerwith no input signal and wait for 2 to 3 minutes in nonloaded condition before the adjustment.Confirm that the voltage across the terminals TP11 andTP12 is 10 mV to 200 mV.If it exceeds 200 mV, open (cut off) R172.G Confirmation of AUTO STANDBY operationSetting1) Turn off the power switch located on the rear panel.2) In order to shorten the time required for operationcheck; connect a 10k resistor at both ends of R252 onthe MAIN (3) P.C.B. (Refer to page 11)3) Connect the output signal from the signal generator tothe INPUT 2 / L/MONO terminal of the unit.4) Set the signal generator for the sine wave of 100Hz,8mV.5) Turn on the power switch located on the rear panel.Confirmation1) Set the AUTO STANDBY switch to the LOW position.2) Turn on the STANDBY/ON switch.The display LED lights up (green) and its color changesto red after 5 to 10 seconds.3) Turn off the STANDBY/ON switch.The display LED goes off.4) Set the AUTO STANDBY switch to the HIGH position.5) Turn on the STANDBY/ON switch.The display LED lights up (green) and its color remainsunchanged even after time have elapsed.6) Turn off the STANDBY/ON switch.The display LED goes off.After confirmation1) Turn off the power switch.2) Disconnect the 10k resistor connected to both ends ofR252.調整動作安定、信号入力電源入、無負荷状態2、3分待調整行。TP11TP12端子間電圧10 mV 200 mV確認。電圧200 mV越場合、R172。動作確認設定1） 主電源OFF。2） 動作確認時間短縮、MAIN （3） P.C.B.R252両端10 k抵抗取付。 （11参照）3） 信号発生器出力信号本機入力2L/MONO端子接続。4） 信号発生器正弦波、100 Hz、8 mV設定。5） 主電源ON。確認1） /感度 低 合。2） STANDBY/ONON。表示LED点灯 （緑色） 。510秒後、表示LED赤色変。3） STANDBY/ONOFF。表示LED消灯。4） /感度 高 合。5） STANDBY/ONON。表示LED点灯 （緑色） 。時間経過表示LED色変化。6） STANDBY/ONOFF。表示LED消灯。確認終了後1） 主電源切。2） R252両端取付抵抗外。YST-SW31510YST-SW315Schematic Diagram / 回路図Test Points / POWER DRIVEPS AMPIDLING CURRENTADJDC 10 mVto200 mVABDRIVERDC 10 mV to 200 mVPoint APoint BD29TP11 (+)TP12 (-)D31MAIN (2) P.C.B.MAIN (1) P.C.B.Idling Current AdjustmentR172ABCDEFGHIJ1234567YST-SW31511PHASEDRIVERREVNORMHIGHOFFLOWINPUT2INPUT1/OUTPUTLRAUTOSTANDBYMAIN (10) P.C.B.MAIN (3) P.C.B.MAIN (1) P.C.B.BEVCCPWS-12+12+V2BASSMAINETOVLBLREREBLBEMAIN (6) P.C.B.MAIN (2) P.C.B.MAIN (4) P.C.B.MAIN (6) P.C.B.MA2LIM-12+12BASSTOVLEMA1PWS+V1-VAVSTDR1-DR2-OUTDR2+DR1+MA2LIM-12+12BASSTOVLEMA1PWS+V1-VAVSTDR1-DR2-OUTDR2+DR1+TR-ETR-BTR-CE+V1VCCTR-ETR-BTR-C-B1E+B1-B1E+B1CONFIRMATION OF AUTO STANDBY OPERATIONR252add 10kI PRINTED CIRCUIT BOARD (Foil side)Ref. No.LocationD1J6D2J3D3H3D4H2D5H3D6F3D7E6D9I2D12E3D13F3D14F3D15H6D19E3D20G2D21F6D22G3D23G6D24H6D25G3D26G3D27G7D28G6D29G6D30F6D31F6D32F6D33F6D34F3D36I2IC1I3IC3H7IC4B5IC6I3IC8E2IC10C6IC11B4IC201B5Q1AF5 Semiconductor LocationRef. No.LocationQ1CH5Q2H3Q3H3Q4H3Q5H3Q6H3Q7H3Q8H3Q9G5Q10G3Q16AF5Q16CH5Q17AG5Q17CH5Q18F2Q19F2Q20F3Q21F3Q22H6Q23H6Q24AG6Q24CF6Q25F3Q26AF7Q26CG7Q27H2Q28H2Q29G3Q30G3Q31G6Q32F6Q37I2Q38I2Q201B7Q202B6Q203B7Q204B7Q205C62ABCDEFGHIJ13457YST-SW315612VOLUME100150Hz50HzMOVIEMUSICPOWERVOLTAGESELECTORHIGH CUTB.A.S.S.STANDBY/ONMAIN (11) P.C.B.MAIN (2) P.C.B.MAIN (5) P.C.B.MAIN (4) P.C.B.MAIN (8) P.C.B.MAIN (6) P.C.B.MAIN (7) P.C.B.MAIN (9) P.C.B.MAIN (6) P.C.B.STANDBY/ONMAIN (10) P.C.B.MAIN (10) P.C.B.MAIN (1) P.C.B.MAIN (10) P.C.B.J, U, C, A, B, G modelsACVCC+V1EORORGYGYBEBEBEBEBEGRGRBRBRYEYEBLBLREREBEBEREREBLBLWHWHWHR, T, K modelsMAIN (1) P.C.B.MAIN (10) P.C.B.BEBEREREBLBLTOVLEMAINBASS+V2+12-12PWSVCCLEDGE1LEDRLEDGE1LEDRI PRINTED CIRCUIT BOARD (Foil side) Semiconductor LocationRef. No. LocationD11B2D201I2D202H2D203B2D204B2IC7G2IC202B3Q206H2Q207B2Q208A2Q209B2ABCDEFGHIJKLYST-SW31513SCHEMATIC DIAGRAM12345678987654321OUT1Vcc+IN2IN2OUT2+Vcc+IN1IN1IC11: NJM4558LDual OP-Amp18IC4, 7, 8, 10: PC4570HADual OP-AmpVccVo1-Vm1+Vm1VEE+Vm2-Vm2Vo2Vcc123456789+-1219IC3 : TA7317PProtector16238749MutingcircuitConstant voltagepower supply circuitSchmidtcircuitPower supplyON/OFFdetecting circuitDischargingcircuit5SubstrateOvercurrentdetecting circuitOR circuitCurrent voltagedetecting circuitGND19Relay drivecircuitIC201: LB8555DTimer1VCC8DISCHARGE7CONTROL VOLTAGE5THRESHOLD6+TRIGGERGND2RESET4+RSQ148OUTPUT3VINVOUTGNDOUTCOMINIC202 NJM78L08AVoltage RegulatorPIN CONNECTION DIAGRAM OF TRANSISTORS, DIODES