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NS-P440/NS-P446
NS-P440/NS-P446 consists of the NX-E440, NX-C440 and SW-P440.
NX-E440
x 4 (for NS-P440)
x 5 (for NS-P446)
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 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 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, certification 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 striving 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 distributor's Service Division.
WARNING:
Static discharges can destroy expensive components. 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.
I CONTENTS
TO SERVICE PERSONNEL .......................................... 2
SPECIFICATIONS ...................................................... 3~4
INTERNAL VIEW ........................................................... 4
REAR PANELS .......................................................... 5~6
DISASSEMBLY PROCEDURES ................................... 7
1 0 0 9 9 6
SERVICE MANUAL
NX-C440
x 1
IMPORTANT NOTICE
BLOCK DIAGRAM ......................................................... 8
PRINTED CIRCUIT BOARD .......................................... 9
SCHEMATIC DIAGRAM .............................................. 10
PARTS LIST ........................................................... 11~19
2005
All rights reserved.
This manual is copyrighted by YAMAHA and may not be copied or
redistributed either in print or electronically without permission.
SW-P440
x 1
P.O.Box 1, Hamamatsu, Japan
'05.12
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Table of Contents
Related Manuals for Yamaha NX-E440
Summary of Contents for Yamaha NX-E440
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Page 1: Table Of Contents
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 and specifications are subject to change without notice or obligation to retrofit. -
Page 2: To Service Personnel
NS-P440/NS-P446 AC LEAKAGE I TO SERVICE PERSONNEL WALL EQUIPMENT TESTER OR OUTLET UNDER TEST EQUIVALENT 1. Critical Components Information Components having special characteristics are marked s and must be replaced with parts having specifications equal to those originally installed. 2. Leakage Current Measurement (For 120V Models Only) INSULATING When service has been completed, it is imperative to verify TABLE... -
Page 3: Specifications
Black color ........U, C, R, A, B, G, L models Light Cherry color ......C, R, K, A, B, G, L models I SW-P440 Type ....Advanced Yamaha Active Servo Technology Output Power ..... 50 W (100 Hz, 5 ohms 10% T.H.D) Dynamic Power ..........100 W, 5 ohms Input Impedance INPUT (PJ) .............. -
Page 4: Internal View
NS-P440/NS-P446 • DIMENSIONS NS-E440 NS-C440 (2-3/8") 285 (11-3/16") 18.3 110 (4-5/16") (3/4") (1/16") 129.7 (5-1/8") 21.4 110 (4-5/16") (4-5/8") (13/16") (3/16") 136.8 (5-3/8") (2-3/8") A screw with a diameter of 6 mm (7/32") can be used. [Hole depth: 15 mm (19/32")] SW-P440 295.3 (11-5/8") 280 (11-1/16") -
Page 5: Rear Panels
NS-P440/NS-P446 I REAR PANELS • SW-P440 • SW-P440 U, C models R model Power Indicator Power Indicator • SW-P440 • SW-P440 K model A model Power Indicator Power Indicator... - Page 6 NS-P440/NS-P446 • SW-P440 • SW-P440 B, G models L model Power Indicator Power Indicator • NX-E440 • NX-C440 B, G models B, G models U, C, R, K, A, L models U, C, R, K, A, L models...
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Page 7: Disassembly Procedures
NS-P440/NS-P446 I DISASSEMBLY PROCEDURES (Remove parts in the order as numbered.) 1. Removal of Driver Disconnect the power cable from the AC outlet. 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. -
Page 8: Block Diagram
NS-P440/NS-P446 I BLOCK DIAGRAM... -
Page 9: Printed Circuit Board
NS-P440/NS-P446 MAIN (1) P.C.B. (Side A) I PRINTED CIRCUIT BOARD Lead Free Solder Used MAIN (3) P.C.B. (Side A) DRIVER VOLUME • Semiconductor Location INPUT Ref. no. Location Ref. no. Location Ref. no. Location POWER INDICATOR Circuit No. U, C, R, A, L K, B, G MAIN MAIN (2) P.C.B. -
Page 10: Schematic Diagram
NS-P440/NS-P446 I SCHEMATIC DIAGRAM MAIN (1) POWER AMP 35.0 -8.1 LIMITER MAIN (3) L.P.F. INPUT -14.6 14.5 DRIVER 23.6 -14.6 14.5 A.N.I.C. 14.5 -14.5 L.P.F. H.P.F. -8.0 VOLUME PROTECTION -1.9 35.0 MAIN (10) -30.7 29.4 29.4 14.5 REGULATOR -15.1 AC 52.0 -29.6 POWER MAIN (7) -
Page 11: Parts List
NS-P440/NS-P446 PARTS LIST I ELECTRICAL PARTS I WARNING Components having special characteristics are marked s and must be replaced with parts having specifications equal to those originally installed. ABBREVIATIONS IN THIS LIST ARE AS FOLLOWS: C.A.EL.CHP : CHIP ALUMI.ELECTROLYTIC CAP L.EMIT : LIGHT EMITTING MODULE C.CE... - Page 12 NS-P440/NS-P446 SW-P440 P.C.B. MAIN SW-P440 P.C.B. MAIN Ref. No. Part No. Description Markets Ref. No. Part No. Description Markets WG592800 P.C.B. MAIN VD631600 DIODE 1SS133,176 WG592900 P.C.B. MAIN VG442500 DIODE.ZENR MTZJ24B WG593000 P.C.B. MAIN WG613900 LED 333GD/T5 GREEN WG593100 P.C.B. MAIN D22-23 VD631600 DIODE...
- Page 13 NS-P440/NS-P446 Parts List for Carbon Resistors Value 1/4W Type Part No. 1/6W Type Part No. Value 1/4W Type Part No. 1/6W Type Part No. 1.0 Ω 3100 3100 10 kΩ 7100 7100 HJ35 HF85 HF45 HF45 1.8 Ω ❊ 3180 11 kΩ...
- Page 14 NS-P440/NS-P446 I SW-P440 EXPLODED VIEW 4-34 4-36 4-32 4-19 4-26 4-34 4-1 (3) 4-36 4-25 4-37 4-24 4-32 4-23 4-1 (5) 4-31 4-35 4-32 4-1 (2) 4-11 4-33 4-19 4-1 (1) R, L models 4-34 4-11 4-1 (7) U, C, K, A, B, G models 4-1 (10) R, L models 4-1 (9)
- Page 15 NS-P440/NS-P446 I SW-P440 MECHANICAL PARTS Ref. Part No. Description Remarks Markets WG636900 CABINET ASS'Y SW-P440LC WG636800 CABINET ASS'Y SW-P440BL WG636700 CABINET ASS'Y SW-P440SI X2323B00 DRIVER WOOFER 16cm 6Ω JA1689 WG592800 P.C.B. ASS'Y MAIN WG592900 P.C.B. ASS'Y MAIN WG593000 P.C.B. ASS'Y MAIN WG593100 P.C.B.
- Page 16 NS-P440/NS-P446 I NX-E440 EXPLODED VIEW...
- Page 17 NS-P440/NS-P446 I NX-E440 MECHANICAL PARTS Ref. Part No. Description Remarks Markets WG574500 CABINET ASS'Y NX-E440LC WG574400 CABINET ASS'Y NX-E440BL WG574300 CABINET ASS'Y NX-E440SI WD362900 SPEAKER TERMINAL 2P PUSH V8663800 BIPOLAR ELECTROLYTIC CAP X7114A00 DRIVER TWEETER 2.5cm 6Ω JA05F8 NX-E440LC,SI X7436A00 DRIVER TWEETER 2.5cm 6Ω...
- Page 18 NS-P440/NS-P446 I NX-C440 EXPLODED VIEW...
- Page 19 NS-P440/NS-P446 I NX-C440 MECHANICAL PARTS Ref. Part No. Description Remarks Markets WG574800 CABINET ASS'Y NX-C440LC WG574700 CABINET ASS'Y NX-C440BL WG574600 CABINET ASS'Y NX-C440SI WD362900 SPEAKER TERMINAL 2P PUSH V8663800 BIPOLAR ELECTROLYTIC CAP X7114A00 DRIVER TWEETER 2.5cm 6Ω JA05F8 NX-C440LC,SI X7436A00 DRIVER TWEETER 2.5cm 6Ω...
- Page 20 NS-P440/NS-P446...