Yamaha-YSTMS-55-D-Service-Manual电路原理图.pdf
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1、100675 POWERED MULTIMEDIA SPEAKERS YST-MS50/YST-MS55D TO SERVICE PERSONNEL . 1 FRONT AND REAR PANELS. 12 SPECIFICATIONS. 34 INTERNAL VIEW . 4 DISASSEMBLY PROCEDURES . 5 USB PORT OPERATION CHECK. 617 ICONTENTS BLOCK DIAGRAM. 1819 PRINTED CIRCUIT BOARD . 2022 IC DATA . 23 SCHEMATIC DIAGRAM . 2425 PART
2、S LIST . 2637 SERVICE MANUAL IMPORTANT NOTICE This manual has been provided for the use of authorized YAMAHA Retailers and their service personnel. It has been assumed that basic service procedures inherent to the industry, and more specifically YAMAHA Products, are already known and understood by t
3、he users, and have therefore not been restated. WARNING:Failure to follow appropriate service and safety procedures when servicing this product may result in personal injury, destruction of expensive components, and failure of the product to perform as specified. For these reasons, we advise all YAM
4、AHA product owners that any service required should be performed by an authorized YAMAHA Retailer or the appointed service representative. IMPORTANT:The presentation or sale of this manual to any individual of firm does not constitute authorization, certification or recognition of any applicable tec
5、hnical capabilities, or establish 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 departments of YAMAHA are continually striving to improve YAMAHA products. Modificat
6、ions are, therefore, inevitable and specifications are subject to change without notice or obligation to retrofit. Should any discrepancy appear to exist, please contact the distributors Service Division. WARNING:Static discharges can destroy expensive components. Discharge any static electricity yo
7、ur body may have accumulated by grounding yourself to the ground buss in the unit (heavy gauge black wires connect to this buss). IMPORTANT:Turn the unit OFF during disassembly and part replacement. Recheck all work before you apply power to the unit. 1 YST-MS50/YST-MS55D YST-MS50 YST-MS55D I TO SER
8、VICE 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 Model only). When service has been completed, it is imperative t
9、hat you verify that all exposed conductive surfaces are properly insu- lated from supply circuits. GMeter impedance should be equivalent to 1500 ohm shunted by 0.15F. GLeakage current must not exceed 0.5mA. GBe sure to test for leakage with the AC plug in both polarities. WARNING: CHEMICAL CONTENT N
10、OTICE! 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 entities) to cause cancer and/or bi
11、rth 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 soldering, do not inhale solder fumes or expose eyes to solder/flux vapor! If you
12、come in contact with solder or components located inside the enclosure of this product, wash your hands before handling food. WALL OUTLET EQUIPMENT UNDER TEST AC LEAKAGE TESTER OR EQUIVALENT INSULATING TABLE I FRONT AND REAR PANELS CAUTION F1: FOR CONTINUED PROTECTION AGAINST RISK OF FIRE,REPLACE ON
13、LY WITH SAME TYPE 1.25A, 250V FUSE. CAUTION F1: REPLACE WITH SAME TYPE 1.25A, 250V FUSE. ATTENTION F1: UTILISER UN FUSIBLE DE RECHANGE DE MEME TYPE DE 1.25A, 250V FUSE. A V Satellite Speakers Front PanelSatellite Speakers Rear Panel YST-MS55D LchRchLchRch 2 YST-MS50/YST-MS55D YST-MS50 YST-MS55D Subw
14、oofer Front Panel Subwoofer Rear Panel YST-MS55D YST-MS55D YST-MS55D YST-MS55D R model only U and C models U and C models only R modelA modelB and G models 3 YST-MS50/YST-MS55D YST-MS50 YST-MS55D Operating Section Satellite(Auto Power)Switch Master Volume control SubwooferVolume control Dimensions (
15、W x H x D) Satellite97x159x178mm (3-13/16x6-1/4x7-9/16) Subwoofer350 x210 x321mm (13-25/32x8-1/4x12/5/8) Weight Satellite0.7kg (1Ibls. 9 oz.)x2 Subwoofer8kg (17Ibls. 10oz.) Finish YST-MS50 YST-MS50WComputer white color YST-MS50BBlack color YST-MS55D YST-MS55DWComputer white color YST-MS55DBBlack col
16、or Accessories YST-MS50 3.5mm stereo mini plug cable with black color(1.8m) x1 RCA pin plug cable (1.8m) x1 8 pin plug cable (1.8m) x1 8 pcs of nonskid pads x1set YST-MS55D 3.5mm stereo mini plug cable with black color(1.8m) x1 RCA pin plug color (1.8m) x1 USB cable (2m) x1 8 pcs of nonskid pads x1s
17、et CD-ROM x1 USB Operating Requirements YST-MS55D :Windows 98-installed PC equipped with USB port. :CD-ROM drive for device driver installation. :Intel Pentium processor at least 200 MHz or equivalent. :At least 10 MB of available hard disk capacity. * Specifications subject to change without votice
18、. U . U. S. A. modelA .Australian model C . Canadian modelB .British model R . General modelG .European model TypeActive Servo Technology (Advanced Y. S. T) Output Power Satellite20W+20W (1kHz, 4 ohms at T.H.D.=10%) Subwoofer40W (100Hz, 5 ohms at T.H.D.=10%) Input Sencitivity200mV (1kHz, 4 ohms at 2
19、0W) Input Impedance25 kohms Frequency Responce32 Hz to 20 kHz Crossover Frequency Satellite Tweeter12 kHz Subwooferfc=200Hz Headphone Output Level 0.38V/30 ohms (at 200 mV Rated Input) Speaker Unit Satellite Tweeter: 19mm (3/4) balanced dome (JA0262), Magnetic shielding Type Midrange: 8cm(3) cone (J
20、A0865), Magnetic Shielding Type Subwoofer: 16cm(6-1/2) cone (JA1673), Magnetic Shielding Type Input Sction YST-MS50 Satellite3.5mm stereo minijack for audio-signal x2 YST-MS55D Satellite3.5mm stareo mini jack for audio-signal x2 (USB in use x1) SubwooferUSB digital x1 Output Sction YST-MS50 Subwoofe
21、rRCA pin jack connected to L ch speaker 8 pin jack connected to R ch speaker YST-MS55D SubwooferRCA pin jack connected to L ch speaker 8 pin jack connected to R ch speaker 3.5mm stereo mini jack for audio-signal x1 (USB in use) Power Consumption65W Power Supply U, C modelsAC120V/60Hz R modelsAC110/1
22、20/220/240V/50/60Hz A modelsAC240V/50Hz B, G modelsAC230V/50Hz Windows 98, are trademarks of Micro Soft Corporation. 4 YST-MS50/YST-MS55D YST-MS50 YST-MS55D DIMENSIONS M Satellite SpeakerM Subwoofer 97 (3-13/16) 178 (7-9/16) 166(6-17/32) 159 (6-1/4) 210 (8-1/4)321 (12-5/8) 350 (13-25/32) I INTERNAL
23、VIEW Satellite Speakers Notes:The Satellite Speakers are available by the speaker unit (Lch or Rch). Individual parts of the Satellite Speakers are not available. (See page 31 and 33 of the PARTS LIST for YST-MS50, page 34 and 36 of the PARTS LIST for YST-MS55D.) 213 M L chM R ch Satellite Speaker (
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