Yamaha-NSP-246-Service-Manual电路原理图.pdf

《Yamaha-NSP-246-Service-Manual电路原理图.pdf》由会员分享，可在线阅读，更多相关《Yamaha-NSP-246-Service-Manual电路原理图.pdf（16页珍藏版）》请在收音机爱好者资料库上搜索。

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 100880 SERVICE MANUAL NS-P240/NS-P246 HOME THEATER SOUND SPEAK

7、ER SYSTEM NS-P240/NS-P246 is composed of NX-S120, NX-C120 and SW-P240. NS-P240/NS-P246、NX-S120NX-C120SW-P240構成。 SW-P240 BLOCK DIAGRAM . . . . . . . . . . . . . . . . . . .8 SW-P240 PRINTED CIRCUIT BOARD . . . . . . . . . . . .9 SW-P240 SCHEMATIC DIAGRAM . . . . . . . . . . . . . .10 PARTS LIST . . .

8、 . . . . . . . . . . . . . . . . . . . . . . . . . .1115 I CONTENTS TO SERVICE PERSONNEL . . . . . . . . . . . . . . . . . . . .2 FRONT PANELS . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2 REAR PANELS . . . . . . . . . . . . . . . . . . . . . . . . . . . .34 SPECIFICATIONS / 参考仕様 . . .

9、. . . . . . . . . . . . . . .46 SW-P240 INTERNAL VIEW . . . . . . . . . . . . . . . . . . . .6 SW-P240 DISASSEMBLY PROCEDURES / SW-P240分解手順 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7 NS-P240 NS-P246 RadioFans.CN 收音机爱 好者资料库 NS-P240/NS-P246 2 NS-P240 NS-P246 I TO SERVICE PERSONNEL 1. C

10、ritical Components Information Components having special characteristics are marked Z and must be replaced with parts having specifications equal to those originally installed. 2. Leakage Current Measurement (For 120V Models Only) When service has been completed, it is imperative to verify that all

11、exposed conductive surfaces are properly insulated from supply circuits. GMeter impedance should be equivalent to 1500 ohm shunted by 0.15F. AC LEAKAGE TESTER OR EQUIVALENT EQUIPMENT UNDER TEST INSULATING TABLE WALL OUTLET GLeakage current must not exceed 0.5mA. GBe sure to test for leakage with the

12、 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 the California Health and Welfare Agency

13、 (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 your skin! When soldering, do not inhale s

14、older 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. M SW-P240 I FRONT PANELS M NX-C120M NX-S120 x 4 (for NS-P240) x 5 (for NS-P246) RadioFans.CN 收音机爱 好者资料库 NS-P240/NS-P24

15、6 NS-P240 NS-P246 3 I REAR PANELS M SW-P240 (U, C models)M SW-P240 (T model)M SW-P240 (R, L models) KTL SU09109- M SW-P240 (K model)M SW-P240 (B, G models)M SW-P240 (A model) NS-P240/NS-P246 4 NS-P240 NS-P246 G NX-S120 Type / 型式 . . . . . . . . . . . .Full Range Acoustic Suspension Magnetic Shieldin

16、g Type Driver / . 5 cm (2”) Cone Magnetic Shielding Type x 2 Frequency Response / 再生周波数帯域 . . . . . . . . . . . . . . . . . . . . . . 100 Hz to 25 kHz Impedance / . . . . . . . . . . . . . . . 6 ohms Nominal Input / 許容入力 . . . . . . . . . . . . . . . . . . . . 30 W Maximum Input / 最大入力 . . . . . . .

17、 . . . . . . . . . . 100 W Sensitivity / 出力音圧 . . . . . . . . 86 dB/2.83 V/m Input Terminal / 入力端子 . . . . . . . . . . . . . . Push Type Dimensions (W x H x D) / 寸法 （幅高奥行） . . . . . . . . . . . . . 72 mm x 170 mm x 108 mm (2-13/16” x 6-11/16” x 4-1/4”) Weight / 質量 . . . . . . . . . . . . . . . . . .

18、 . . . . 0.9 kg (2 lbs.) Finish / 仕上 . . . . . . . . . . . . . . . . . . . . . . . Silver color Black color Appropriate Speaker Stand / 適応 . . . SPS-80 Appropriate Speaker Bracket / 適応 . . . SPM-8S G NX-C120 Type / 型式 . . . . . . . . . . . .Full Range Acoustic Suspension Magnetic Shielding Type Driv

19、er / . 5 cm (2”) Cone Magnetic Shielding Type x 2 Frequency Response / 再生周波数帯域 . . . . . . . . . . . . . . . . . . . . . . 100 Hz to 25 kHz Impedance / . . . . . . . . . . . . . . . 6 ohms Nominal Input / 許容入力 . . . . . . . . . . . . . . . . . . . . 30 W Maximum Input / 最大入力 . . . . . . . . . . . .

20、. . . . . 100 W Sensitivity / 出力音圧 . . . . . . . . 86 dB/2.83 V/m Input Terminal / 入力端子 . . . . . . . . . . . . . . Push Type Dimensions (W x H x D) / 寸法 （幅高奥行） . . . . . . . . . . . . . 300 mm x 72 mm x 105 mm (11-13/16” x 2-13/16” x 4-1/8”) Weight / 質量 . . . . . . . . . . . . . . . . . 1.1 kg (2 l

21、bs. 6 oz.) Finish / 仕上 . . . . . . . . . . . . . . . . . . . . . . . Silver color Black color I SPECIFICATIONS / 参考仕様 M SW-P240 (J model) NX-S120 IMPEDANCE NOMINAL MAXIMUM INPUT INPUT 6 OHMS 30 WATTS 100 WATTS NX-C120 IMPEDANCE NOMINAL MAXIMUM INPUT INPUT 6 OHMS 30 WATTS 100 WATTS M NX-S120 M NX-C12

22、0 NS-P240/NS-P246 NS-P240 NS-P246 5 U . USA model C . Canadian model R . General model T . Chinese model K . Korean model A . Australian model B . British model G . European model L . Singapore model J. Japanese model G SW-P240 Type / 型式 . . . . . Advanced Yamaha Active Servo Technology Output Power

23、 / 出力 . . . . .50 W (100 Hz, 5 ohms, 10 % THD) Dynamic Power / . . . . . . 100 W, 5 ohms Input Impedance / 入力 INPUT (PJ) . . . . . . . . . . . . . . . . . . . . . . . . 12 k-ohms Frequency Response / 再生周波数帯域 . . . . 30 Hz to 200 Hz Driver / . . . . . 16 cm (6-1/2”) cone Magnetic Shielding Type Input

24、 Section / 入力部 INPUT . . . . . . . . . . . . . . . . . . . . . . . . . RCA Pin Jack Power Supply / 電源 U, C models . . . . . . . . . . . . . . . . . . . AC 120 V, 60 Hz R, T, K, L models . . AC 110-120/220-240 V, 50/60 Hz A model . . . . . . . . . . . . . . . . . . . . . . AC 240 V, 50 Hz B, G models

25、 . . . . . . . . . . . . . . . . . . . AC 230 V, 50 Hz J model . . . . . . . . . . . . . . . . . . . . AC 100 V, 50/60 Hz Power Consumption / 消費電力 U, C, A, B, G, R, T, K, L models . . . . . . . . . . . . . 40 W J model . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 W Dimensions (W

26、x H x D) / 寸法 （幅高奥行） . . . . . . . . . . . . 200 mm x 365 mm x 390 mm (7-7/8” x 14-7/20” x 15-5/16”) Weight / 質量 . . . . . . . . . . . . . . . . 8.4 kg (18 lbs. 8 oz.) Finish / 仕上 Silver color . . . . . . U, C, R, T, K, A, B, G, L, J models Black color . . . . . . . . . . . . . . . . U, C, R, A, G m

27、odels G Accessories / 付属品 NS-P240 . . . . . . . . . . . . . . . Subwoofer Cable (5m) x 1 Nonskid Pad x 4 (for subwoofer) Speaker Cable (15 m) x 2 Speaker Cable (4 m) x 3 Nonskid Pads x 16 Mounting Bracket x 4, Screws x 4 Fasteners x 2 NS-P246 . . . . . . . . . . . . . . . Subwoofer Cable (5m) x 1 No

28、nskid Pad x 4 (for subwoofer) Speaker Cable (15 m) x 3 Speaker Cable (4 m) x 3 Nonskid Pads x 20 Mounting Bracket x 5, Screws x 5 Fasteners x 2 * Specifications subject to change without notice. NS-P240/NS-P246 6 NS-P240 NS-P246 I SW-P240 INTERNAL VIEW wq re qMAIN (2) P.C.B. wMAIN (1) P.C.B. eMAIN (

29、3) P.C.B. rPOWER TRANSFORMER Unit : mm (inch) 300 (11-13/16)105 (4-1/8) 72 (2-13/16) 72 (2-13/16)108 (4-1/4) 170 (6-11/16) G NX-S120 G NX-C120 200 (7-7/8)390 (15-5/16) 365 (14-3/8) DIMENSIONS / 寸法図 G SW-P240 NS-P240/NS-P246 NS-P240 NS-P246 7 1. Removal of Front Grille The Front Grille is fixed to th

30、e cabinet with dowels at 6 locations. As a screwdriver (for slotted head screw) is used for removal, use special care not to cause damage to the cabinet. a. Using the screwdriver inserted in the gap between the Front Grille and the cabinet (bottom side first), push up the Front Grille. b. Remove the

31、 Front Grille by lifting it up. * When installing the Front Grille, apply quick-drying bond to the dowels and then fit them into dowel holes for secure installation. (The Front Grille will come off easily if its dowels are fitted into dowel holes only.) 2. Removal of Rear Panel Remove 14 screws ( q

32、) in Fig. 2. *Arrow marks ( ) are printed to identify the screws to be removed. *When assembling the Rear Panel, check to ensure that the packing is not damaged so as to prevent air leakage from occurring. I SW-P240 DISASSEMBLY PROCEDURES / SW-P240分解手順 (Remove parts in disassembly order as numbered.

33、) (番号順部品取外。） 1.外方 6 箇所固定。取外 際、本体傷付十分注意。 a. 底側等差込、 押上。 （Fi g. 1 ） b. 徐上面等押上、 外。 取付時、速乾 塗差込、 固定。（差込 、簡単。 ） 2.外方 q 14 本外、取出。 （Fi g. 2 ） 取外箇所矢印（）印刷。 組立際、損傷無確認、 漏発生組立。 Fig. 1Fig. 2 Front Gri ll / q Rear Panel / NS-P240/NS-P246 8 NS-P240 NS-P246 I SW-P240 BLOCK DIAGRAM IC1B IC7A VR1 VOLUME L.P.F. 6dB/oct

34、H.P.F. 12dB/oct L.P.F. 12dB/oct 6 5 75 7 IC7B IC4 IC3 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 SPEAKER INPUT + POWER AMP ABCDEFGH 1 2 3 4 5 6 NS-P240/NS-P246 9 I SW-P240 PRINT

35、ED CIRCUIT BOARD INPUT VOLUME POWER POWER CABLE WH RE SPEAKER P.C.B. MAIN (1) P.C.B. MAIN (2)P.C.B. MAIN (3) R, T, K, L models U, C, A, B, G, J models SW1 (R,T,K,L) AC110220VAC220240V BE BE WH WH SW-P240 ABCDEFGH 1 2 3 4 5 6 NS-P240/NS-P246 10 POWER AMP PROTECTION LIMITTER MAIN (2) MAIN (3) MAIN (1)

36、 POWER SW2 SY16-52-4 (U99S2)/T 15K SLR-56MG 5KA 0 0 0 0 0 00 0 0 0 0 0 0 0 0 0 0 0.2 -0.7 -0.7 1.1 1.4 3.1 0 0 0 0 0.2 0 0 -33.9 11.6 1.2 -1.2 -34.4 34.3 0.5 11.6 34.2 -34.4 11.6 34.2 11.6 -11.6 -11.6 -11.6 0 0 0 0 0 0 0 11.6 -11.6 AC25.2 AC25.2 I SW-P240 SCHEMATIC DIAGRAM IC1, 2, 7 : KIA4558P Dual

37、OP-Amp + OUT1 IN1 VCC +VCC OUT2 1 2 3 45 +IN1IN2 +IN2 + 6 7 8 IC4 : STK404-050 Power Amp 12345678910 R1 R4 R5 C1 C2 D1 TR3 TR5 R3R6 TR4 SUB R2 TR1 TR2 TR6 TR7 TR8 IC3 : TA7317P Protector 1 6 2 3 8 74 9 Muting circuit Constant voltage power supply circuit Schmidt circuit Power supply ON/OFF detecting

38、 circuit Discharging circuit 5 Substrate Overcurrent detecting circuit OR circuit Current voltage detecting circuit GND Relay drive circuit * All voltages are measured with a 10M/V DC electronic volt meter. * Components having special characteristics are marked Zand must be replaced with parts havin

39、g specifications equal to those originally installed. * Schematic diagram is subject to change without notice. *電圧、内部抵抗10M電圧計測定。 *Z印部品、安全性確保部品示。部品交換必要場合、 記載部品使用。 *本回路図、標準回路図。改良予告変更。 NS-P240/NS-P246 NS-P240 NS-P246 11 ABBREVIATIONS IN THIS LIST ARE AS FOLLOWS : C.A.EL.CHP: CHIP ALUMI. ELECTROLYTIC CA

40、P C.CE: CERAMIC CAP C.CE.ARRAY: CERAMIC CAP ARRAY C.CE.CHP: CHIP CERAMIC CAP C.CE.ML: MULTILAYER 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.F

41、LM: MULTILAYER FILM CAP C.MP: METALLIZED PAPER CAP C.MYLAR: MYLAR FILM CAP C.MYLAR.ML: MULTILAYER 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 CA

42、P C.TRIM: TRIMMER CAP CN: CONNECTOR CN.BS.PIN: CONNECTOR, BASE PIN CN.CANNON: CONNECTOR, CANNON 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: O

43、UTPUT COIL DIOD.ARRAY: DIODE ARRAY DIODE.BRG: DIODE BRIDGE DIODE.CHP: CHIP DIODE DIODE.SHOT: 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:

44、 FLUORESCENT DISPLAY FLTR.CE: CERAMIC FILTER FLTR.COMB: COMB FILTER MODULE FLTR.LC.RF: LC FILTER ,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: LIGH

45、T EMITTING MODULE LED.DSPLY: LED DISPLAY LED.INFRD: LED, INFRARED MODUL.RF: MODULATOR, RF PHOT.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

46、.FP: FLAME PROOF CARBON RESISTOR R.FUS: FUSABLE RESISTOR R.MTL.CHP: CHIP METAL FILM RESISTOR 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 WO

47、UND RESISTOR SCR.BND.HD: BIND HEAD B-TITE SCREW SCR.BW.HD: BW HEAD TAPPING SCREW SCR.CUP: CUP 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

48、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.DGT: DIGITAL TRANSISTOR TR.DGT.CHP: CHIP DIGITAL TRANSISTOR TR

49、ANS: TRANSFORMER TRANS.PULS: PULSE TRANSFORMER TRANS.PWR: POWER TRANSFORMER ASSy TUNER.AM: TUNER PACK, AM TUNER.FM: TUNER PACK, FM TUNER.PK: FRONT-END TUNER PACK VR: ROTARY POTENTIOMETER VR.MTR: POTENTIOMETER WITH MOTOR VR.SW: POTENTIOMETER WITH ROTARY SW VR.SLIDE: SLIDE POTENTIOMETER VR.TRIM: TRIMMER POTENTIOMETER I ELECTRICAL PARTS PARTS LIST I WARNING GComponents having special characteristics are marked Z and must be replaced with parts having specifications equal to those originally install