Yamaha-MS400-spk-sm 维修电路原理图.pdf
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1、MS4001SERVICE MANUALPA01155620001210-98000 1.415K-215 K Printed in Japan 2000.12HAMAMATSU, JAPANThis document is printed on chlorine free (ECF) paper with soy ink.POWERED SPEAKER CONTENTSSPECIFICATIONS. 3DIMENSIONS. 4BLOCK DIAGRAM. 4PANEL LAYOUT. 5CIRCUIT BOARD LAYOUT. 6WIRING. 7DISASSEMBLY PROCEDUR
2、E. 8IC BLOCK DIAGRAM. 10CIRCUIT BOARDS. 11INSPECTIONS. 16OVERALL CIRCUIT DIAGRAM. 19PARTS LISTMS400RadioFans.CN 收音机爱 好者资料库MS4002 2IMPORTANT NOTICEThis manual has been provided for the use of authorized Yamaha Retailers and their service personnel. It has been assumedthat basic service procedures inh
3、erent to the industry, and more specifically Yamaha Products, are already known and under-stood 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 per-sonal injury, destruction of expensive
4、 components and failure of the product to perform as specified. Forthese reasons, we advise all Yamaha product owners that all service required should be performed by anauthorized Yamaha Retailer or the appointed service representative.IMPORTANT :This presentation or sale of this manual to any indiv
5、idual or firm does not constitute authorization certifi-cation, recognition of any applicable technical capabilities, or establish a principal-agent relationship ofany form.The data provided is belived to be accurate and applicable to the unit(s) indicated on the cover. The research engineering, and
6、service departments of Yamaha are continually striving to improve Yamaha products. Modifications are, therefore, inevitableand changes in specification are subject to change without notice or obligation to retrofit. Should any discrepancy appear toexist, please contact the distributors Service Divis
7、ion.WARNING :Static discharges can destroy expensive components. Discharge any static electricity your body may haveaccumulated by grounding yourself to the ground bus in the unit (heavy gauge black wires connect tothis bus.)IMPORTANT :Turn the unit OFF during disassembly and parts replacement. Rech
8、eck all work before you apply powerto the unit.WARNING: CHEMICAL CONTENT NOTICE!The solder used in the production of this product contains LEAD. In addition, other electrical/electronic and/or plastic (Whereapplicable) components may also contain traces of chemicals found by the California Health an
9、d Welfare Agency (and possiblyother entities) 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 REASON WHATSO EVER!Avoid prolonged, unprotected contact between solder and your skin! When soldering, d
10、o 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 before handlingfood.WARNINGComponents having special characteristics are marked and must be replaced with parts having specifica
11、tion equal to thoseoriginally installed.2RadioFans.CN 收音机爱 好者资料库MS4003SPECIFICATIONSGeneral specificationsTypeAmp.unitHF:100W at 5kHz, THD=1%, RL=16 ohmsBi-Amp 2-way bass reflex powered speaker(Bi-amp lifier electronic crossover network)Speaker unitLF : 38 cm coneHF : 5 cm Titanium diaphragm compres
12、sion driverFrequency Range . 50 Hz16 kHz (-10 dB)Maximum Output Level . 124.5 dB (1m on Axis)Directional angle . 90 (H)/40 (V)Dimension (W x H x D) . 449 x 683 x 379 mmWeight . 24.2 kgColor . Black (approx.Munsell value:5PB 2/1)Tripod diameter pole . 3536 mmAccessories . Power cord (AC inlet type, 2
13、.5 m)Maximum Output PowerLF: 300W at 500Hz, THD=1%, RL=4 ohmsCross over frequency . 1.6 kHz (30dB/oct.)Input Sensitivity . LINE: +4dB*, MIC: -50dB*Input impedance . LINE: 30 kohms, MIC: 5 kohmsControlsLEVEL . LINE, MIC , MASTEREQ . LOW: 0 (Max.) -10 dB (Min.) at 55 HzHIGH: 3 dB (HF)Power switch . On
14、/OffConnectors (all balanced):LINE in/out . XLR-3-31, XLR-3-32, phone(They are all connected in paralleland can be used as line outputs.)MIC in . XLR-3-31POWER indicator . Green LEDPower Requirement USA and Canada . 120 V, 60 HzEurope . 230 V, 50 HzOthers . 240 V, 50 HzPower Consumption . 120 WAcces
15、sor ies . Bracketadapter BAD251 (forBWS251-400, BCS251, and BBS251)* 0 dB=0.775 VFor European ModelPurchaser/User Information specified in EN55103-1 andEN55103-2.Inrush Current: 25AConformed Environment: E1, E2, E3 and E4MS4004DIMENSIONSBLOCK DIAGRAMUnits: mm683379449203241M8Remove the cover when yo
16、u use optional bracketsLOW CUTP.AMPP.AMPMic InputIC102VR101VR104VR105VR103IC104IC107IC108IC106IC105VR1022131315751513213IC101LineMicMasterLPFHPFFreq. response compensationLFHFSPEAKERSPEAKERLine Input/OutputLOWEQHIGHEQPhone JackHPFAMP 4/5AMP 5/5AMP 1/5CN102-6CN101-6CN102-4CN101-4CN201-6CN103-6CN201-4
17、CN203-3(LF-),CN203-4(LF+)CN203-1(HF+),CN203-2(HF-)CN103-4MS4005132231132LOWHIGHLEVELLEVELLEVEL912345678TONE CONTROL123456789PANEL LAYOUTPOWER switchAC IN connectorLINE connectorsLINE LEVEL controlMIC connectorMIC controlMASTER LEVEL controlPOWER indicatorTONE CONTROL Rear PanelMS4006CIRCUIT BOARD LA
18、YOUT1/55/54/52/53/5AMPAMPAMPAMPAMPMS4007WIRING1/5SpeakersWFTWCN203CN201CN202CN1035/5CN102CN1014/5TransformerCN2043/5CN205P.SWAC.IN2/5YEBLCN208CoilH onlyAMPAMPAMPAMPAMPMS4008DISASSEMBLY PROCEDUREFig.11.Amplifier assembly1-1.Remove the sixteen (16) screws marked 180A. Theamplifier assembly can then be
19、 removed. (Fig. 1)2.Cabinet assembly and buffle assembly2-1.Remove the nineteen (19) screws marked 170. Thebuffle assembly can then be removed from thecapinet assembly. (Fig. 1)3.Speakers (38cm, 25mm)3-1.Remove the buffle assembly from the cabinetassembly. (See Procedure 2.)3-2.To remove the 38cm sp
20、eaker, remove the four (4)screws marked 180B and the front grille. (Fig. 1)3-3.Remove the eight (8) bolts marked 70. The 38cmspeaker can then be removed. (Fig. 1)3-4.To remove the 25mm speaker, remove the four (4)screws marked 120. Then remove the speaker withthe bracket. (Fig. 1)3-5.Remove the two
21、(2) screws marked 100. The 25mmspeaker can then be removed from the bracket. (Fig. 1)70: Hexagonal Bolt 5.0 X 35 MFZN2BL (V6389200)120: Bind Head Tapping Screw-P 5.0 X 30 MFZN2BL (V6405200)170: Bind Head Tapping Screw-P 5.0 X 50 MFZN2BL (V6084800)180: Bind Head Screw-Giza 4 X 16 MFZN2BL (V6396400)17
22、0180B170180A180A7017038cm Speaker100RedBlackRedBlack25mm SpeakerRed markingYellowBlue120MS4009Fig.24.AMP Circuit Boards (1/5 to 5/5)4-1.Remove the amplifier assembly. (See Procedure 1.)4-2.Remove the screws and the knob from each circuitboard, which can then be removed. (Fig. 2)5.Power transformer5-
23、1.Remove the amplifier assembly. (See Procedure 1.)5-2.Remove the four (4) screws marked 80B. The powertransformer can then be removed. (Fig. 2)80: Bonding Screw-B 4.0 X 12 MFZN2BL (V7242900)AMP1/590Bind Head Tapping Screw-B 3.0 X 12 MFZN2BL (VQ074600)10Circuit Board100Bind Head Screw SP 3.0 X 8 MFZ
24、N2Y (EG330290)4AMP2/580ABonding Screw-B 4.0 X 12 MFZN2BL (V7242900)2Circuit Board130Bind Head Screw 4.0 X 8 MFZN2BL (VP156800)1AMP3/5110ABonding Screw-B 3.0 X 8 MFZN2BL (VN413300)2Circuit BoardAMP4/5110BBonding Screw-B 3.0 X 8 MFZN2BL (VN413300)6Circuit BoardHexagonal Nut1AMP5/5150Knob MX-GREEN/D-GR
25、AY (VU860200)2Circuit Board160Knob ORANGE/D-GRAY (VV625800)2170Knob RED/D-GRAY (VU860400)1200Button 3 X 25 MFZN2BL (V3289800)4PCB NameRef No.DescriptionQty80BHexagonal nut80A150160200170110B1001/590905/54/51202/53/5110A130AMPAMPAMPAMPAMPMS40010IC BLOCK DIAGRAMFig.3120: Bonding Screw-B 4.0 X 8 MFZN2B
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