Yamaha-YSTSW45-sub-sm(1) 维修电路原理图.pdf
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1、STANDBY/ONHIGH CUTVOLUME50Hz150Hz010SUPERWOOFER SYSTEM YST-SW45P.O.Box 1, Hamamatsu, JapanSERVICE MANUALPOWERED SUBWOOFER SYSTEMYST-SW45100676 CONTENTSTO SERVICE PERSONNEL . 1SPECIFICATIONS. 1DIMENSIONS . 1INTERNAL VIEW . 2REAR PANELS . 2DISASSEMBLY PROCEDURES . 3BLOCK DIAGRAM. 4IC BLOCK. 4PRINTED C
2、IRCUIT BOARD . 57SCHEMATIC DIAGRAM . 8PARTS LIST . 915IMPORTANT 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 theindustry, and more specifically YAMAHA Products, are alreadyknown
3、 and understood by the users, and have therefore not beenrestated.WARNING:Failure to follow appropriate service and safetyprocedures when servicing this product may resultin personal injury, destruction of expensivecomponents, and failure of the product to performas specified. For these reasons, we
4、advise allYAMAHA product owners that any servicerequired should be performed by an authorizedYAMAHA Retailer or the appointed servicerepresentative.IMPORTANT:The presentation or sale of this manual to anyindividual or firm does not constitute authorization,certification or recognition of any applica
5、bletechnical capabilities, or establish a principle-agentrelationship of any form.The data provided is believed to be accurate and applicable to theunit(s) indicated on the cover. The research, engineering, and servicedepartments of YAMAHA are continually striving to improveYAMAHA products. Modifica
6、tions are, therefore, inevitable andspecifications are subject to change without notice or obligation toretrofit. Should any discrepancy appear to exist, please contact thedistributors Service Division.WARNING:Static discharges can destroy expensivecomponents. Discharge any static electricity yourbo
7、dy may have accumulated by grounding yourselfto the ground buss in the unit (heavy gauge blackwires connect to this buss).IMPORTANT:Turn the unit OFF during disassembly and partreplacement. Recheck all work before you applypower to the unit.RadioFans.CN 收音机爱 好者资料库YST-SW45235(9-5/16)260(10-1/4)365(14
8、-7/20)318(12-1/2)40(1-9/16)18(11/16)WALLOUTLETEQUIPMENTUNDER TESTAC LEAKAGETESTER OREQUIVALENTINSULATINGTABLE1 TO SERVICE PERSONNELCritical Components Information.Components having special characteristics are markedand must be replaced with parts having specificationsequal to those originally instal
9、led.WARNING: CHEMICAL CONTENT NOTICE!The solder used in the production of this product contains LEAD. In addition, other electrical/electronic and /or plastic(where applicable) components may also contain traces of chemicals found by the California Health and Welfare Agency(and possibly other entiti
10、es) to cause cancer and/or birth defects or other reproductive harm.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
11、 solder/flux vapor!If you come in contact with solder or components located inside the enclosure of this product, wash your hands beforehandling food. SPECIFICATIONSType. Active Servo Processing Subwoofer SystemSpeaker Unit. 20 cm (8) cone woofer (JA2162)magnetic shielding type x 1Amplifier Output .
12、 70 W/5 ohmsHigh-Cut Filter. 50 Hz150Hz (-24 dB/oct.)Frequency Response . 30 Hz200Hz (10 dB)Power SupplyU.S.A. and Canada models . AC120V, 60HzAustralia model . AC240V, 50HzU.K. and Europe models . AC230V, 50HzGeneral and China models. AC110/120/220/240V, 50/60Hz(Adjustable with Voltage Selector)Pow
13、er Consumption. 55 WDimensions (W x H x D) . 235 x 365 x 318 mm. (9-5/16 x 14-7/20 x 12-1/2)Weight . 9 kg (19 lbs. 13 oz.)Supplied Accessory . Rubber Pads* Specifications subject to change without notice. DIMENSIONSUnit: mm (inch)RadioFans.CN 收音机爱 好者资料库YST-SW45POWERONOFFRLLRRLOUTPUTINPUT2AUTOSTANDBY
14、INPUT1TO SPEAKERSFROM AMPLIFIERLOW OFF HIGH MODEL110/120/220/240 VOLTS55 WATTSVOLTAGESELECTOR SER.NO.YST SW45NO.50/60 HzMADE IN MALAYSIARLLRRLOUTPUTINPUT2AUTOSTANDBYINPUT1POWERONOFFTO SPEAKERSFROM AMPLIFIERLOW OFF HIGH MODEL240 VOLTS55 WATTSMADE IN MALAYSIASER. NO.YST SW45NO.N8950 HzPOWERONOFFRLLRRL
15、OUTPUTINPUT2AUTOSTANDBYINPUT1TO SPEAKERSFROM AMPLIFIERLOW OFF HIGH MODEL110/120/220/240 VOLTS55 WATTSVOLTAGESELECTOR SER.NO.YST SW45NO.50/60 HzMADE IN MALAYSIAPOWERONOFFMODEL120 VOLTSMADE IN MALAYSIASER. NO.80 WATTS60HzYST SW45NO.ATTENTION:RISQUE DE CHOC ELECTRIQUENE PAS OUVRIR.WARNING:TO REDUCE THE
16、 RISK OF FIREOR ELECTRIC SHOCK,DO NOT EXPOSETHIS APPLIANCE TO RAIN OR MOISTURE.RLLRRLOUTPUTINPUT2AUTOSTANDBYINPUT1TO SPEAKERSFROM AMPLIFIERLOW OFF HIGH 12345Right side internal view2 INTERNAL VIEW1 MAIN P.C.B. (4)2 MAIN P.C.B. (3)3 MAIN P.C.B. (1)4 MAIN P.C.B. (2)5 Power Transformer REAR PANELSU, C
17、modelsR modelA modelB modelT modelPOWERONOFFMODEL230 VOLTS55 WATTSMADE IN MALAYSIASER. NO.YST SW45NO.50 HzRLLRRLOUTPUTINPUT2AUTOSTANDBYINPUT1TO SPEAKERSFROM AMPLIFIERLOW OFF HIGH YST-SW451222Fig. 2Fig. 13 DISASSEMBLY PROCEDURES (Remove parts in the order as numbered.)1. Removal of Front GrilleThe fr
18、ont grille is fixed to the cabinet with dowels at 4locations.As a screwdriver (for slotted head screw) is used forremoval, use special care not to cause damage to thecabinet.a. Apply the block to the rear panel so as to avoid damageto the Terminal of the rear panel.b. Use the screwdriver inserted in
19、 the gap between thefront grille and the cabinet (bottom side first), push upthe front grille. (Fig. 1)c. Remove the front grille by lifting it up. (Fig. 1)2. Remove of Speakera. Remove 4 screws (1) in Fig. 2, and remove thespeaker.b. Remove the cable cord.3. Removal of the Rear Panela. Remove 10 sc
20、rews (2) in Fig. 2, and remove the rearpanel.*When removing the rear panel, replacing the packing.YST-SW45LIMITERIC8REGULATORPOWERSUPPLYD1D11Q11VCCT1SW1D8D19-B+BPOWERLEDPWRSTANDBY/ONSW+15-15Q1,D2Q2,D3RY2F1PROTECTION0.1SPEAKERRY1D7L.P.F6dB/oct2IC9243IC7BIC7AL.P.F12dB/octHIGHCUTVR2867VR3VOLUMEL.P.F6dB
21、/oct765IC1BIC1A123SIGNALSENSORIC4TIMERIC5+84673AUTOPOWERSW2OFFPWRAUTO POWER ON/OFF CIRCUITQ3, 6D4,D5+-+-+LRLRLRINPUT 1OUTPUTINPUT 2Q12POWERAMP4RY2H.P.F12dB/octHLIC10+8POWER SWSW5A.N.I.CIC2,3,6Q7L.P.F6dB/oct11312643151413127R1C1TR4TR7TR8TR9TR10TR1TR2TR3TR5R7R9R10R4R5R3R2R6D1SUBR8D2VINVOUTGNDVccVo1-Vm
22、1+Vm1VEE+Vm2-Vm2Vo2Vcc1 2 3 4 5 6 7 8 9+-124 BLOCK DIAGRAM IC BLOCK DIAGRAMPC4570HA (OP Amp.)NJM78L08A (Voltage Regulator)M51848L (CR Timer)STK4036-2 (Amp.) NJM4558L (OP Amp.)PC1237HA (Protect IC)ABCDE1234567YST-SW45From: MAIN (3)SPEAKERMAIN P.C.B. (1)From: MAIN (4)From: MAIN (2)From: MAIN (7)+5 PRI
23、NTED CIRCUIT BOARD (Foil side)ABCDE1234567YST-SW45MAIN P.C.B. (3)From: MAIN (2)AUTOSTANDBYINPUT2OUTPUT / INPUTTo: MAIN (1)MAIN P.C.B. (2)To: MAIN (1)To: MAIN (6)From: MAIN (5)To: MAIN (3)To: VOLTAGE SELECTOR(GENERAL model)6 PRINTED CIRCUIT BOARD (Foil side)ABCDE1234567YST-SW45MAIN P.C.B. (6)To: MAIN
24、 (1)From: MAIN (2)From: VOLTAGE SELECTOR(GENERAL model)POWER TRANSFORMERMAIN P.C.B. (7)MAIN P.C.B. (5)To: MAIN (2)POWERMAIN P.C.B. (4)To: MAIN (1)7 PRINTED CIRCUIT BOARD (Foil side)A123456789BCDEFGHIJKLYST-SW45BCEBCEPIN CONNECTION DIAGRAM OF TRANSISTORS, DIODES AND ICS.2SD19132SB12742SK3042SC4688D3S
25、BA20S1NB202SC18152SA10152SC2240ECB+1SS133MTZ15CMTZJ24BMTZJ12CPC4570HAAnodeCathode19M51848LNJM78L08ASTK4036-218NJM4558L18OUTCOMIN115SGD00000014.414.2000000000000014.4-14.2-0.4-0.4035.91.2036.7-36.8-1.3-1.3-35.7-34.514.4000000000000000-14.2-1.814.4-14.200000000002.06.16.600.82.23.114.40.20.2-14.20.825
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