Yamaha-NSP-270-Service-Manual电路原理图.pdf

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1、SERVICE MANUAL 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 the users, and have therefore no

2、t 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 YAMAHA product owners that any ser

3、vice 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 or firm does not constitute authorization, certification or recognition of any applicable technical capabilities, or establi

4、sh 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. Modifications are, therefore, inevitable

5、 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 your body may have accumulated by

6、 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. IMPORTANT NOTICE 101000 SERVICE MANUAL NS-P270/NS-P276 HOME CINEMA 5.1CH SPEAKE

7、R PACKAGE/ HOME CINEMA 6.1CH SPEAKER PACKAGE NS-P270/NS-P276 consists of the NX-E270, NX-C270 and the SW-P270 I CONTENTS TO SERVICE PERSONNEL . . . . . . . . . . . . . . . . . . . .2 FRONT PANELS . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2 REAR PANELS . . . . . . . . . . . . . . . . .

8、 . . . . . . . . . . .34 SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . .46 SW-P270 INTERNAL VIEW . . . . . . . . . . . . . . . . . . . .6 SW-P270 DISASSEMBLY PROCEDURES . . . . . . . .7 SW-P270 BLOCK DIAGRAM . . . . . . . . . . . . . . . . . . .8 SW-P270 PRINTED CIRCUIT BOARD . .

9、. . . . . . . . . .9 SW-P270 SCHEMATIC DIAGRAM . . . . . . . . . . . . . .10 REPLACEMENT PARTS LIST . . . . . . . . . . . . . .1115 NS-P270 NS-P276 2006 All rights reserved. This manual is copyrighted by YAMAHA and may not be copied or redistributed either in print or electronically without permissi

10、on. 06. 01 RadioFans.CN 收音机爱 好者资料库 NS-P270/NS-P276 2 NS-P270 NS-P276 M SW-P270 I FRONT PANELS I TO SERVICE PERSONNEL 1. Critical Components Information Components having special characteristics are marked Z and must be replaced with parts having specifications equal to those originally installed. 2.

11、 Leakage Current Measurement (For 120V Models Only) When service has been completed, it is imperative to verify that all exposed conductive surfaces are properly insulated from supply circuits. GMeter impedance should be equivalent to 1500 ohms shunted by 0.15F. GLeakage current must not exceed 0.5m

12、A. GBe sure to test for leakage with the AC plug in both polarities. 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

13、the California Health and Welfare Agency (and possibly other 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 WHATSOEVER! Avoid prolonged, unprotected contact between solder and yo

14、ur skin! When soldering, do not inhale solder fumes or expose eyes to solder/flux vapor! If you come in contact with solder or components located inside the enclosure of this product, wash your hands before handling food. x4 for (NS-P270) x5 for (NS-P276) M NX-C270M NX-E270 AC LEAKAGE TESTER OR EQUI

15、VALENT EQUIPMENT UNDER TEST INSULATING TABLE WALL OUTLET x1 x1 RadioFans.CN 收音机爱 好者资料库 NS-P270/NS-P276 NS-P270 NS-P276 3 NS-P270 NS-P276 M SW-P270 (U, C models)M SW-P270 (T model)M SW-P270 (R model) M SW-P270 (A model)M SW-P270 (B, G models)M SW-P270 (K model) I REAR PANELS POWER INDICATORPOWER INDI

16、CATORPOWER INDICATOR POWER INDICATORPOWER INDICATORPOWER INDICATOR NS-P270/NS-P276 4 NS-P270 NS-P276 M SW-P270 (L model)M NX-C270M NX-E270 I SPECIFICATIONS G NX-E270 Type . 2-way acoustic suspension Magnetic shielding type Driver Woofer . 8 cm (3-1/8”) cone x 1 Tweeter . 1.9 cm (3/4”) balanced dome

17、x 1 Frequency Response.100 Hz to 25 kHz Impedance . 6 ohms Nominal Input . 30 W Maximum Input. 80 W Sensitivity . 85 dB/2.83 V/m Crossover Frequency . 12 kHz Input Terminal . Push type Dimensions (W x H x D). 105 mm x 151 mm x 113 mm (4-1/8” x 5-15/16” x 4-7/16”) Weight . 0.8 kg (1 lbs. 12 oz.) Fini

18、sh Black color .U, C, R, A, B, G, L models Silver color.U, C, R, T, K, A, B, G, L models Appropriate Speaker Stand. SPS-80S G NX-C270 Type .Full-range acoustic suspension Magnetic shielding type Driver. 5 cm (2”) cone x 2 Frequency Response.130 Hz to 20 kHz Impedance . 6 ohms Nominal Input . 30 W Ma

19、ximum Input. 100 W Sensitivity . 85 dB/2.83 V/m Input Terminal . Push type Dimensions (W x H x D). 300 mm x 72 mm x 113 mm (11-13/16” x 2-13/16” x 4-7/16”) Weight . 0.9 kg (2 lbs.) Finish Black color .U, C, R, A, B, G, L models Silver color.U, C, R, T, K, A, B, G, L models POWER INDICATOR NS-P270/NS

20、-P276 NS-P270 NS-P276 5 NS-P270 NS-P276 U . USA model C . Canadian model R . General model T . Chinese model K . Korean model G SW-P270 Type .Advanced Yamaha Active Servo Technology Magnetic shielding type Output Power. 50 W (100 Hz, 5 ohms , 10 % THD) Dynamic Power.100 W, 5 ohms Input Impedance. IN

21、PUT (PJ): 12 k-ohms Frequency Response. 30 Hz to 200 Hz Driver Woofer . 16 cm (6-5/16”) cone x 1 Input Section .RCA pin jack Operation Section . Power switch, Volume control, Power indicator Power Supply U, C models.AC 120 V, 60 Hz R, T, K, L models .AC 110120/220240 V, 50/60 Hz A model .AC 240 V, 5

22、0 Hz B, G models.AC 230 V, 50 Hz Power Consumption U, C, R, T, K, A, B, G, L models. 40 W Dimensions (W x H x D). 200 mm x 365 mm x 370 mm (7-7/8” x 14-3/8” x 14-9/16”) Weight . 8.5 kg (18 lbs. 12 oz.) Finish Black color . U, C, R, A, B, G, L models Silver color.U, C, R, T, K, A, B, G, L models G Ac

23、cessories NS-P270. Subwoofer cable (3m) x 1 Nonskid pad x 4 (for SW-P270) Speaker cable (10 m) x 2 Speaker cable (4 m) x 3 Nonskid pad x 16 (for NX-E270) Fastener x 2 (for NX-C270) NS-P276.Subwoofer cable (3m) x 1 Nonskid pad x 4 (for SW-P270) Speaker cable (10 m) x 3 Speaker cable (4 m) x 3 Nonskid

24、 pad x 24 (for NX-E270) Fastener x 2 (for NX-C270) * Specifications subject to change without notice. G DIMENSIONS Advanced YST Advanced Yamaha Active Servo Technology is a unique system to let the speaker unit have a perfectly linear motion by the speaker and amplifier combination. Unit : mm (inch)

25、 300 (11-13/16”)113 (4-7/16”) 72 (2-13/16”) 105 (4-1/8”)113 (4-7/16”) 151 (5-15/16”) 70 (2-3/4”) Holes A screw with a diameter of 4 mm (5/32”) can be used. Hole depth: 10 mm (13/32”) Unit : mm (inch) M NX-C270 M NX-E270 A . Australian model B . British model G . European model L . Singapore model NS

26、-P270/NS-P276 6 NS-P270 NS-P276 M SW-P270 200 (7-7/8”)370 (14-9/16”) 335 (13-3/16”) 365 (14-3/8”) Unit : mm (inch) I SW-P270 INTERNAL VIEW 21 43 qMAIN (2) P.C.B. wMAIN (1) P.C.B. eMAIN (3) P.C.B. rPOWER TRANSFORMER NS-P270/NS-P276 NS-P270 NS-P276 7 NS-P270 NS-P276 1. Removal of Front Grille Assy The

27、 Front Grille Assy is fixed to the cabinet with dowels at 6 locations. As a flatblade screwdriver is used for removal, use special care not to cause damage to the cabinet Assy. a. Using the flatblade screwdriver inserted in the gap between the Front Grille Assy and the cabinet Assy (bottom side firs

28、t), push up the Front Grille Assy (Fig.1). b. Remove the Front Grille Assy by lifting a metalblade up (Fig.1). *When installing the Front Grille Assy, apply quick- drying bond to the dowels and then fit them into dowel holes for secure installation. (The Front Grille Assy will come off easily if its

29、 dowels are fitted into dowel holes only.) 2. Removal of Rear Panel Assy Remove 14 screws (1) (Fig.2). *Arrow marks ( ) are printed to identify the screws to be removed. *When assembling the Rear Panel Assy, check to ensure that the packing is not damaged so as to prevent air leakage from occurring.

30、 I SW-P270 DISASSEMBLY PROCEDURES (Remove parts in disassembly order as numbered.) Disconnect the power cable from the AC outlet. Front Grill Assy Cabinet Assy 1 Rear Panel Assy Metal blade Flatblade screwdriver Fig.1 Fig.2 NS-P270/NS-P276 8 NS-P270 NS-P276 I SW-P270 BLOCK DIAGRAM IC1B IC7A VR1 VOLU

31、ME L.P.F. 6dB/oct H.P.F. 12dB/oct L.P.F. 12dB/oct 6 5 75 7 IC7B IC4 Q10, 11, 12, 13 A.N.I.C LIMITER RY1 3 1 2 IC2 Q9 D14, 15, 16 Q3, 4, 5, 8 D9, 10, 11, 12 1 10 B +B 9 8 0.1 PROTECTION +12 +B B 12 REGULATOR POWER SUPPLY D3 Q1, D6 Q2, D7 F2 POWER SW2 DRIVER INPUT + POWER AMP ABCDEFGH 1 2 3 4 5 6 NS-P

32、270/NS-P276 9 I SW-P270 PRINTED CIRCUIT BOARD P. C. B. MAIN (2) P. C. B. MAIN (1) P. C. B. MAIN (3) POWER CABLE POWER DRIVER WH BE INPUT VOLUME POWER INDICATOR WHBE R, T, K, L models R, T, K, L models 3 16782 45 182 U, C, A, B, G models 14 BR BL 110120V 220240V WHSW1 RE GR 25 36 Circoic No.U.CRTKABG

33、L F1 SW1 C50 ABCDEFGH 1 2 3 4 5 6 NS-P270/NS-P276 10 0 0 0 0 0 00 0 -11.6 0 0 0 0 0 0 00 0.2 11.7 1.9 1.3 1.3 0.1 -32.0 -1.1 -33.0 32.9 0.2 11.7 11.7 -11.0 0 0 0 0 0 0 -1.00 0 0 0 11.7 -11.0 0 0 0 0.1 -1.5 0 0.1 11.7 -11.7 0.1 0.1 0.1 0.1 0.1 0.1 0.10.1 0.1 0.1 -9.9 1.31.3 0.3 1.3 1.3 0.8 0.8 0.8 0.

34、1 0.1 0.1 0.10.1 -11.6 -12.2 -12.2 0.1 12.3 +12.3 11.731.3 -31.5 32.9-33.0 AC48.9 V -31.6 0 INPUT MAIN (2) MAIN (3) POWER U, C, A, B, G models R, T, K, L models MAIN (1) DRIVER VOLUME POWER INDICATOR IC4 : STK404-050 Power Amp 1 12345678910 R1 R4 R5 C1 C2 D1 TR3 TR5 R3R6 TR4 SUB R2 TR1 TR2 TR6 TR7 T

35、R8 IC1, 2, 7 : KIA4558P Dual OP-Amp + OUT1 IN1 VCC +VCC OUT2 1 2 3 45 +IN1IN2 +IN2 + 6 7 8 I SW-P270 SCHEMATIC DIAGRAM * All voltages are measured with a 10M/V DC electronic volt meter. * Components having special characteristics are marked Z and must be replaced with parts having specifications equ

36、al to those originally installed. * Schematic diagram is subject to change without notice. NS-P270/NS-P276 11 NS-P270 NS-P276 ABBREVIATIONS IN THIS LIST ARE AS FOLLOWS : C.A.EL.CHP: CHIP ALUMI. ELECTROLYTIC CAP C.CE: CERAMIC CAP C.CE.ARRAY: CERAMIC CAP ARRAY C.CE.CHP: CHIP CERAMIC CAP C.CE.ML: MULTI

37、LAYER CERAMIC CAP C.CE.M.CHP: CHIP MULTILAYER CERAMIC CAP C.CE.SAFTY: RECOGNIZED CERAMIC CAP C.CE.TUBLR: CERAMIC TUBULAR CAP C.CE.SMI: SEMI CONDUCTIVE CERAMIC CAP C.EL: ELECTROLYTIC CAP C.MICA: MICA CAP C.ML.FLM: MULTILAYER FILM CAP C.MP: METALLIZED PAPER CAP C.MYLAR: MYLAR FILM CAP C.MYLAR.ML: MULT

38、ILAYER MYLAR FILM CAP C.PAPER: PAPER CAPACITOR C.PLS: POLYSTYRENE FILM CAP C.POL: POLYESTER FILM CAP C.POLY: POLYETHYLENE FILM CAP C.PP: POLYPROPYLENE FILM CAP C.TNTL: TANTALUM CAP C.TNTL.CHP: CHIP TANTALUM CAP C.TRIM: TRIMMER CAP CN: CONNECTOR CN.BS.PIN: CONNECTOR, BASE PIN CN.CANNON: CONNECTOR, CA

39、NNON CN.DIN: CONNECTOR, DIN CN.FLAT: CONNECTOR, FLAT CABLE CN.POST: CONNECTOR, BASE POST COIL.MX.AM: COIL, AM MIX COIL.AT.FM: COIL, FM ANTENNA COIL.DT.FM: COIL, FM DETECT COIL.MX.FM: COIL, FM MIX COIL.OUTPT: OUTPUT COIL DIOD.ARRAY: DIODE ARRAY DIODE.BRG: DIODE BRIDGE DIODE.CHP: CHIP DIODE DIODE.SHOT

40、: SCHOTTKY BARRIER DIODE DIODE.VAR: VARACTOR DIODE DIOD.Z.CHP: CHIP ZENER DIODE DIODE.ZENR: ZENER DIODE DSCR.CE: CERAMIC DISCRIMINATOR FER.BEAD: FERRITE BEADS FER.CORE: FERRITE CORE FET.CHP: CHIP FET FL.DSPLY: FLUORESCENT DISPLAY FLTR.CE: CERAMIC FILTER FLTR.COMB: COMB FILTER MODULE FLTR.LC.RF: LC F

41、ILTER ,EMI GND.MTL: GROUND PLATE GND.TERM: GROUND TERMINAL HOLDER.FUS : FUSE HOLDER IC.PRTCT: IC PROTECTOR JUMPER.CN: JUMPER CONNECTOR JUMPER.TST: JUMPER, TEST POINT L.DTCT: LIGHT DETECTING MODULE L.EMIT: LIGHT EMITTING MODULE LED.DSPLY: LED DISPLAY LED.INFRD: LED, INFRARED MODUL.RF: MODULATOR, RF P

42、HOT.CPL: PHOTO COUPLER PHOT.INTR: PHOTO INTERRUPTER PHOT.RFLCT: PHOTO REFLECTOR PIN.TEST: PIN, TEST POINT PLST.RIVET: PLASTIC RIVET R.ARRAY: RESISTOR ARRAY R.CAR: CARBON RESISTOR R.CAR.CHP: CHIP RESISTOR R.CAR.FP: FLAME PROOF CARBON RESISTOR R.FUS: FUSABLE RESISTOR R.MTL.CHP: CHIP METAL FILM RESISTO

43、R R.MTL.FLM: METAL FILM RESISTOR R.MTL.OXD: METAL OXIDE FILM RESISTOR R.MTL.PLAT: METAL PLATE RESISTOR RSNR.CE: CERAMIC RESONATOR RSNR.CRYS: CRYSTAL RESONATOR R.TW.CEM: TWIN CEMENT FIXED RESISTOR R.WW: WIRE WOUND RESISTOR SCR.BND.HD: BIND HEAD B-TITE SCREW SCR.BW.HD: BW HEAD TAPPING SCREW SCR.CUP: C

44、UP TITE SCREW SCR.TERM: SCREW TERMINAL SCR.TR: SCREW, TRANSISTOR SUPRT.PCB: SUPPORT, P.C.B. SURG.PRTCT : SURGE PROTECTOR SW.TACT: TACT SWITCH SW.LEAF: LEAF SWITCH SW.LEVER: LEVER SWITCH SW.MICRO: MICRO SWITCH SW.PUSH: PUSH SWITCH SW.RT.ENC: ROTARY ENCODER SW.RT.MTR: ROTARY SWITCH WITH MOTOR SW.RT: ROTARY SWITCH SW.SLIDE: SLIDE SWITCH TERM.SP: SPEAKER TERMINAL TERM.WRAP: WRAPPING TERMINAL THRMST.CHP : CHIP THERMISTOR TR.CHP: CHIP TRANSISTOR TR.DG