Yamaha NS-P270 Service Manual

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Manual is about: HOME CINEMA 5.1CH

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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 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.

IMPORTANT NOTICE

1 0 1 0 0 0

SERVICE MANUAL

NS-P270/NS-P276

HOME CINEMA 5.1CH SPEAKER PACKAGE/

HOME CINEMA 6.1CH SPEAKER PACKAGE

NS-P270/NS-P276 consists of the NX-E270, NX-C270 and the SW-P270

■

CONTENTS

TO SERVICE PERSONNEL . . . . . . . . . . . . . . . . . . . . 2

FRONT PANELS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

REAR PANELS . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–4

SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . 4–6

SW-P270 INTERNAL VIEW . . . . . . . . . . . . . . . . . . . . 6

SW-P270 DISASSEMBLY PROCEDURES . . . . . . . . 7

SW-P270 BLOCK DIAGRAM . . . . . . . . . . . . . . . . . . . 8

SW-P270 PRINTED CIRCUIT BOARD . . . . . . . . . . . . 9

SW-P270 SCHEMATIC DIAGRAM . . . . . . . . . . . . . . 10

REPLACEMENT PARTS LIST . . . . . . . . . . . . . . 11–15

NS-P270

NS-P276

This manual is copyrighted by YAMAHA and may not be copied or

redistributed either in print or electronically without permission.

‘06. 01

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Summary of NS-P270

Page 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...
Page 2
Ns-p270/ns-p276 2 ns-p270 ns-p276 ▼ sw-p270 ■ front panels ■ 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. Leakage current measurement (for 1...
Page 3
Ns-p270/ns-p276 ns-p270 ns-p276 3 ns-p270 ns-p276 ▼ sw-p270 (u, c models) ▼ sw-p270 (t model) ▼ sw-p270 (r model) ▼ sw-p270 (a model) ▼ sw-p270 (b, g models) ▼ sw-p270 (k model) ■ rear panels power indicator power indicator power indicator power indicator power indicator power indicator.
Page 4
Ns-p270/ns-p276 4 ns-p270 ns-p276 ▼ sw-p270 (l model) ▼ nx-c270 ▼ nx-e270 ■ specifications ● nx-e270 type ........................................ 2-way acoustic suspension magnetic shielding type driver woofer ....................................... 8 cm (3-1/8”) cone x 1 tweeter .....................
Page 5
Ns-p270/ns-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 ● sw-p270 type .............. Advanced yamaha active servo technology magnetic shielding type output power ............ 50 w (100 hz, ...
Page 6
Ns-p270/ns-p276 6 ns-p270 ns-p276 ▼ sw-p270 200 (7-7/8”) 370 (14-9/16”) 335 (13-3/16”) 365 (14-3/8”) unit : mm (inch) ■ sw-p270 internal view 2 1 4 3 q main (2) p.C.B. W main (1) p.C.B. E main (3) p.C.B. R power transformer.
Page 7
Ns-p270/ns-p276 ns-p270 ns-p276 7 ns-p270 ns-p276 1. Removal of front grille ass’y the front grille ass’y 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 ass’y. A. Using the flatblade screwdriver ...
Page 8
Ns-p270/ns-p276 8 ns-p270 ns-p276 ■ sw-p270 block diagram ic1b ic7a vr1 volume l.P.F. 6db/oct h.P.F. 12db/oct l.P.F. 12db/oct 6 5 7 5 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 regula t o r po wer sup...
Page 9
A b c d e f g h 1 2 3 4 5 6 ns-p270/ns-p276 9 ■ 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 wh be r, t, k, l models r, t, k, l models 3 1 6 7 8 2 4 5 1 8 2 u, c, a, b, g models 1 4 br bl 110–120v 220–...
Page 10
A b c d e f g h 1 2 3 4 5 6 ns-p270/ns-p276 10 0 0 0 0 0 0 0 0 -11.6 0 0 0 0 0 0 0 0 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 -1.0 0 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 0.1 0.1 0.1 0.1 -9.9 1.3 1.3 0.3 1.3 1.3 0.8 0.8 0.8 0.1...
Page 11
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 : multilayer ceramic cap c.Ce.M.Chp : chip multilayer ceramic cap c.Ce.Safty : recognized cer...
Page 12
Ns-p270/ns-p276 12 ns-p270 ns-p276 ref. No. Part no. Description remarks markets * new parts sw-p270 p.C.B. Main * aax76120 p.C.B. Main 435321 uc * aax76130 p.C.B. Main 435322 rtl aax76640 p.C.B. Main 438372 k * aax76140 p.C.B. Main 435323 a aax76630 p.C.B. Main 438371 bg cb2 aax32010 cn b05b-ph-k-s...
Page 13
Ns-p270/ns-p276 13 f2 aax33350 fuse 500ma 250v 357454 abg ic1-2 aax41390 ic kia4558p 353033 z ic4 aax13490 ic stk404-050 af 058246 ic7 aax41390 ic kia4558p 353033 pj1 wc871000 jack 1p msp-241v-01n 396638 q1 aax51690 tr ktc2026 y,gr 362783 q2 aax51680 tr kta1046 y,gr 362782 q3 aax41650 tr ktc3198gr a...
Page 14
A b c d e f g h 1 2 3 4 5 6 ns-p270/ns-p276 14 ● exploded view 101 102 201 205 206 206 208 208 21 1 3 17 17 32 12 15 15 30 7 26 18 11 9 23 24 21 22 25 22 8 18 19 19 6 13 14 14 2 (1) 6 (2) 6 10 25 (3) (10 m x 3) 204 ns-p276 nx-e270 and nx-c270 requires replacement as a unit. Individual replacement pa...
Page 15
Ns-p270/ns-p276 15 accessories * 201 aax76200 subwoofer cable 1p 3m 1pc 378100 * 202 aax76210 speaker cable ass'y 4m 3pcs/set 425687 * 203 aax75500 speaker cable ass'y 10m 2pcs/set 425691 (ns-p270) * 204 aax76220 speaker cable ass'y 10m 3pcs/set 426835 (ns-p276) 205 v5982400 nonskid pad m25 t2 4pcs/...
Page 16: Ns-P270/ns-P276
Ns-p270/ns-p276 16 ns-p270/ns-p276 memo.