Yamaha-NSP-446-Service-Manual电路原理图.pdf

《Yamaha-NSP-446-Service-Manual电路原理图.pdf》由会员分享，可在线阅读，更多相关《Yamaha-NSP-446-Service-Manual电路原理图.pdf（20页珍藏版）》请在收音机爱好者资料库上搜索。

1、I CONTENTS TO SERVICE PERSONNEL . 2 SPECIFICATIONS. 34 INTERNAL VIEW . 4 REAR PANELS . 56 DISASSEMBLY PROCEDURES . 7 BLOCK DIAGRAM. 8 PRINTED CIRCUIT BOARD . 9 SCHEMATIC DIAGRAM . 10 PARTS LIST. 1119 NS-P440/NS-P446 HOME CINEMA 5.1CH SPEAKER PACKAGE / HOME CINEMA 6.1CH SPEAKER PACKAGE x 1x 1 x 4 (fo

2、r NS-P440) x 5 (for NS-P446) NX-E440 NX-C440 SW-P440 NS-P440/NS-P446 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 Product

3、s, are already known and understood 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 personal injury, destruction of expensive components, and failure of the product to perform as specifi

4、ed. For these reasons, we advise all YAMAHA 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 or firm does not constitute authorization, certificat

5、ion or recognition of any applicable technical 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 strivi

6、ng to improve YAMAHA products. Modifications 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 compone

7、nts. Discharge any static electricity your 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. 2005 All

8、 rights reserved. This manual is copyrighted by YAMAHA and may not be copied or redistributed either in print or electronically without permission. NS-P440/NS-P446 consists of the NX-E440, NX-C440 and SW-P440. 05.12 100996 P.O.Box 1, Hamamatsu, Japan SERVICE MANUAL RadioFans.CN 收音机爱 好者资料库 NS-P440/NS

9、-P446 2 NS-P440/NS-P446 WALL OUTLET EQUIPMENT UNDER TEST AC LEAKAGE TESTER OR EQUIVALENT INSULATING TABLE I TO SERVICE PERSONNEL 1. Critical Components Information Components having special characteristics are marked s and must be replaced with parts having specifications equal to those originally i

10、nstalled. 2. 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. “CAUTION” “F1: FOR CONTIN

11、UED PROTECTION AGAINST RISK OF FIRE, REPLACE ONLY WITH SAME TYPE 1.6A, 125V FUSE.” CAUTION F1: REPLACE WITH SAME TYPE 1.6A, 125V FUSE. ATTENTION F1: UTILISER UN FUSIBLE DE RECHANGE DE MEME TYPE DE 1.6A, 125V. WARNING: CHEMICAL CONTENT NOTICE! The solder used in the production of this product contain

12、s 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 birth defects or other reproductive harm. DO NOT PLACE SOLDER, EL

13、ECTRICAL/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 expose eyes to solder/flux vapor! If you come in contact with solder or components located inside the

14、enclosure of this product, wash your hands before handling food. GLeakage current must not exceed 0.5mA. GBe sure to test for leakage with the AC plug in both polarities. About Lead Free Solder Side A Side B SMT REFLOW Process MI FLOW Process Solder Dip Among some types of lead free solder currently

15、 available, it is recommended to use one of the following types for the repair work. Sn + Ag + Cu (tin + silver + copper) Sn + Cu (tin + copper) Sn + Zn + Bi (tin + zinc + bismuth) Caution: 1. As the melting point temperature of the lead free solder is about 30C to 40C (50F to 70F) higher than that

16、of the lead solder, be sure to use a soldering iron suitable to each solder. 2. If lead solder must be used, be sure to remove lead free solder from each terminal section of the parts to be replaced and from the area around it completely before soldering, or make sure that the lead free solder and l

17、ead solder melt together fully. The P.C.B.s installed in this unit are soldered using the following solder. MAIN P.C.B. Side A Side B Lead Free Solder RadioFans.CN 收音机爱 好者资料库 NS-P440/NS-P446 3 NS-P440/NS-P446 I SPECIFICATIONS I NX-E440 Type.2-way Acoustic Suspension Magnetic Shielding Type Driver Wo

18、ofer.8 cm (3-1/8) Cone Magnetic Shielding Type x 1 Tweeter .2.5 cm (1) Balanced Dome Magnetic Shielding Type x 1 Frequency Response . 65 Hz to 40 kHz Impedance . 6 ohms Nominal Input. 40 W Maximum Input . 80 W Sensitivity.80 dB/2.83 V, 1 m Crossover Frequency .7 kHz Input Terminal .Push type Dimensi

19、ons (W x H x D) .118 x 198 x 136.8 mm (4-5/8 x 7-13/16 x 5-3/8) Weight .1.4 kg (3 lbs. 1 oz.) Finish Silver color .U, C, R, K, A, B, G, L models Black color. U, C, R, A, B, G, L models Light Cherry color. C, R, K, A, B, G, L models Appropriate Speaker Stand . SPS-30MMS Appropriate Speaker Bracket. S

20、PM-8S Speaker Bracket Accessory Screw Size. M6 I NX-C440 Type.2-way Acoustic Suspension Magnetic Shielding Type Driver Woofer.7 cm (3-1/8) Cone Magnetic Shielding Type x 2 Tweeter .2.5 cm (1) Balanced Dome Magnetic Shielding Type x 1 Frequency Response . 65 Hz to 40 kHz Impedance . 6 ohms Nominal In

21、put. 40 W Maximum Input . 100 W Sensitivity.82 dB/2.83 V, 1 m Crossover Frequency .8 kHz Input Terminal .Push type Dimensions (W x H x D) .285 x 99 x 129.7 mm (11-3/16 x 3-7/8 x 5-1/8) Weight .1.9 kg (4 lbs. 3 oz.) Finish Silver color .U, C, R, K, A, B, G, L models Black color. U, C, R, A, B, G, L m

22、odels Light Cherry color. C, R, K, A, B, G, L models I SW-P440 Type.Advanced Yamaha Active Servo Technology II Output Power . 50 W (100 Hz, 5 ohms 10% T.H.D) Dynamic Power . 100 W, 5 ohms Input Impedance INPUT (PJ) . 12 k-ohms Frequency Response .30 Hz to 180 Hz Driver . 16cm (6-5/16) Cone Woofer Ma

23、gnetic Shielding Type Input Section INPUT. RCA Pin Jack Operation Section Power Switch, Volume Control, LED indicator QD-Bass Technology QD-Bass (Quatre Dispersion Bass) technology is a Yamaha unique technology to radiate the sound efficiently in four horizontal direction. Advanced YST Advanced Yama

24、ha Active Servo Technology is a unique system to let the speaker unit have a per- fectly linear motion by the speaker and amplifier combination. Power Supply U, C models .AC 120 V, 60 Hz R, L models .AC 110-120 / 220-240 V, 50 / 60 Hz K model .AC 220 V, 60 Hz A model .AC 240 V, 50 Hz B, G models .AC

25、 230 V, 50 Hz Power Consumption . 45 W Dimensions (W x H x D) .280 x 325 x 295.3 mm (11 x 12-13/16 x 11-5/8) Weight .8.2 kg (18 lbs. 1 oz.) Finish Silver color .U, C, R, K, A, B, G, L models Black color. U, C, R, A, B, G, L models Light Cherry color. C, R, K, A, B, G, L models I ACCESSORIES Speaker

26、Cable (4 m) x 3, Speaker Cable (15 m) x 2 for NS- P440) / x 3 for NS-P446, Fastener x 2 for NX-C440, Subwoofer Cable (5 m) x 1, Nonskid pad x 4 for SW-P440 *Specifications are subject to change without notice due to product improvements. U . U.S.A. modelC . Canadian model R . General modelK . Korean

27、 model A . Australian modelB . British model G . European modelL. Singapore model NS-P440/NS-P446 4 NS-P440/NS-P446 I INTERNAL VIEW 325 (12-13/16) 198 (7-13/16) 280 (11-1/16)280 (11-1/16) 295.3 (11-5/8) 12.5 (1/2) 2.8 (1/8) 118 (4-5/8) 110 (4-5/16) 136.8 (5-3/8) 5.4 (3/16) 21.4 (13/16) SW-P440 NS-E4

28、40NS-C440 99 (3-7/8) 285 (11-3/16)110 (4-5/16) 129.7 (5-1/8) 1.4 (1/16) 18.3 (3/4) 60 (2-3/8) 60 (2-3/8) A screw with a diameter of 6 mm (7/32) can be used. Hole depth: 15 mm (19/32) DIMENSIONS 123 4675 ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? 1 2 3 4 5 6 7 Unit: mm (i

29、nch) NS-P440/NS-P446 5 NS-P440/NS-P446 SW-P440 A model I REAR PANELS SW-P440 R model SW-P440 U, C models Power Indicator Power Indicator Power Indicator SW-P440 K model Power Indicator NS-P440/NS-P446 6 NS-P440/NS-P446 SW-P440 B, G models SW-P440 L model Power IndicatorPower Indicator B, G models U,

30、 C, R, K, A, L models B, G models U, C, R, K, A, L models NX-E440 NX-C440 NS-P440/NS-P446 7 NS-P440/NS-P446 Connector Driver Base 11 2 2 Rear Panel Assy 3 3 Rubber Sheet and Cloth I DISASSEMBLY PROCEDURES Fig. 2 Fig. 1 2. Removal of Rear Panel Assy a. Remove 8 screws (3). (Fig. 2) * Screws (3) are i

31、dentified with arrow marks (). b. Pull out the rear panel assy. (Fig. 2) 1. Removal of Driver a. Remove 4 screws (1) and then remove the Base. (Fig. 1) b. Remove 4 screws (2) and then remove the Driver. (Fig. 1) c. Disconnect the connector connected to the terminal of the Driver. (Fig. 1) When Check

32、ing the P.C.B.: Connect all the connectors removed during disassembly back to the original positions. Spread the Rubber Sheet and Cloth for insulation purpose and place the Rear Panel Assy on them. (Fig. 3) Fig. 3 (Remove parts in the order as numbered.) Disconnect the power cable from the AC outlet

33、. NS-P440/NS-P446 8 NS-P440/NS-P446 I BLOCK DIAGRAM VR1 VOLUME IC4A IC4B - + + IC5A IC5B IC1 2 3 - - + - L.P.F. 6dB/oct L.P.F. 12dB/oct H.P.F. 12dB/oct DRIVER INPUT PJ1 POWER AMP RY1 PROTECTION POWER SUPPLY D1 F1 T1 POWER SW5 4 8 2 26 1 9 8 10 +B +B -B -B IC6 Q5, 6 D4, 5, 22, 23 Q17- 20 D7, 25 R28 0

34、.1 +15 -15 Q9, D2 REGULATOR Q10, D3 A.N.I.C LIMITER NS-P440/NS-P446 9 A 1 2 3 4 5 6 7 BCDEFGHIJ VOLUME INPUT MAIN (3) P.C.B.(Side A) Circuit No.U, C, R, A, LK, B, G C79XO DRIVER AC IN MAIN (1) P.C.B. POWER ON/OFF MAIN (5) P.C.B. BE BE BE WH YE YE RE RE BR BR U, C, K, A, B, G models R, L models MAIN

35、(7) P.C.B. MAIN (10) P.C.B. (Side A) MAIN (9) P.C.B. (Side A) MAIN (2) P.C.B. WHBE BE WH BE WH BE WH U, C, K, A, B, G models R, L models R, L models VOLTAGE SELECTOR RE RE RE RE BL RE RE BL BL WH SP- SP+ RE Ref. no.Location D1J2 D2H4 D3I4 D4H2 D5H2 D6G2 D7F2 D8B3 D22G2 D23G2 Semiconductor Location R

36、ef. no.Location D24J3 D25F3 D28I3 D29I3 IC1H1 IC4B3 IC5B2 IC6G3 Q1F3 Q2F3 Ref. no.Location Q5G3 Q6G3 Q9H4 Q10H4 Q17F3 Q18F3 Q19F3 Q20F3 1 9 11 9 19 10 -V -15 +15 E MAIN -V -15 +15 E MAIN POWER INDICATOR (Side A) (Side A) (Side A) (Side A) I PRINTED CIRCUIT BOARD Lead Free Solder Used 2 ABCDEFGHIJ 1

37、3 4 5 7 NS-P440/NS-P446 6 10 I SCHEMATIC DIAGRAM # All voltages are measured with a 10MV DC electronic volt meter. # Components having special characteristics are marked s and must be replaced with parts having specifications equal to those originally installed. # Schematic diagram is subject to cha

38、nge without notice. IC1: STK404-070Y60W AF Power Amp 13245678910 R1 R4 R5 C1 C2 D1 TR3 TR5 R3R6 TR4 SUB R2 TR1 TR2 TR6 TR7 TR8 1 10 STK404-070Y60W 1 9 PIN CONNECTION DIAGRAM OF TRANSISTORS, DIODES AND ICS. 2SB1642 2SD2531 1SR139,400 1SS133,176 MTZJ15C MTZJ24B MTZJ5.6B 2SA970 2SC2240 2SC2878 PC4570HA

39、-A Anode Cathode EC B BCE D3SBA20 IC46: PC4570HA-A Dual OP-Amp VccVo1-Vm1+Vm1VEE+Vm2-Vm2Vo2Vcc 123456789 +- 12 + 0 0 0 0 0 0 0 -1.9 0 0 0 0 0 0 14.5 14.5 -14.6 -14.6 0.2 0.2 0 -34.9 14.5 1.11.7 -35.2 35.1 35.0 35.0 -8.1 35.1 0 0 0 -14.5 23.6 0.8 0.7 1.3 0.20.2 0.2 0.2 0 0.2 0.2 000 00 0.20.2 1.3 0.1

40、 1.3 -30.7 35.0 29.429.4 14.5 -29.5 -29.6 -35.2 AC 52.0 -14.5 15 -15.1 1.3 0 0 -8.0 0 0 0 0.7 0 14.5 0 0 0 0 0 0 -1.1 L.P.F. L.P.F. DRIVER R, L models U, C, K, A, B, G, L models MAIN (1) MAIN (3) MAIN (10) MAIN (7) MAIN (5) MAIN (2) MAIN (9) VOLUME H.P.F. POWER AMP A.N.I.C. LIMITER PROTECTION POWER SUPPLY REGULATOR POWER INPUT NS-P440/NS-P446 11 NS-P440/NS-P446 ABBREVIATIONS IN THIS LIST ARE AS FOLLOWS: PARTS LIST I ELECTRICAL PARTS C.A.EL.CHP: CH