Yamaha NSP-270, NSP-276 Service manual

HOME CINEMA 5.1CH SPEAKER PACKAGE/ HOME CINEMA 6.1CH SPEAKER PACKAGE

NS-P270/NS-P276

SERVICE MANUAL

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

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 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

IMPORTANT: The presentation or sale of this manual to any individual or firm does not constitute authorization, certification or

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

IMPORTANT: Turn the unit OFF during disassembly and part replacement. Recheck all work before you apply power to the unit.

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.

recognition of any applicable technical capabilities, or establish a principle-agent relationship of any form.

accumulated by grounding yourself to the ground buss in the unit (heavy gauge black wires connect to this buss).

101000

■ 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

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

redistributed either in print or electronically without permission.

‘06. 01

NS-P270

NS-P276

NS-P270/NS-P276

■ 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 120V Models Only) When service has been completed, it is imperative to verify that all exposed conductive surfaces are properly insulated from supply circuits.

● Meter impedance should be equivalent to 1500 ohms shunted

by 0.15µF.

WALL OUTLET

● Leakage current must not exceed 0.5mA.

● Be sure to test for leakage with the AC plug in both

polarities.

EQUIPMENT UNDER TEST

INSULATING TABLE

AC LEAKAGE TESTER OR EQUIVALENT

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 (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 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.

■ FRONT PANELS

▼ SW-P270

▼ NX-C270

▼ NX-E270

x4 for (NS-P270) x5 for (NS-P276)

NS-P270

NS-P276

■ REAR PANELS

▼ SW-P270 (U, C models) ▼ SW-P270 (T model)▼ SW-P270 (R model)

NS-P270/NS-P276

NS-P270

NS-P276

POWER INDICATOR

POWER INDICATOR POWER INDICATOR

POWER INDICATOR

▼ SW-P270 (A model) ▼ SW-P270 (B, G models)▼ SW-P270 (K model)

POWER INDICATOR

NS-P270

NS-P276

NS-P270/NS-P276

▼ SW-P270 (L model) ▼ NX-C270 ▼ NX-E270

POWER INDICATOR

■ SPECIFICATIONS

● 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 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.)

Finish

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

● 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

Maximum 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

NS-P270

NS-P276

NS-P270/NS-P276

NS-P270

NS-P276

● 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 .......................... INPUT (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 110–120/220–240 V, 50/60 Hz

A model ............................................... AC 240 V, 50 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

● Accessories

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 pad x 24 (for NX-E270)

Fastener x 2 (for NX-C270)

* Specifications subject to change without notice.

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

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.

● DIMENSIONS

▼ NX-C270

72 (2-13/16”)

▼ NX-E270

151 (5-15/16”)

105 (4-1/8”) 113 (4-7/16”)

300 (11-13/16”) 113 (4-7/16”)

Unit : mm (inch)

Holes

Unit : mm (inch)

70 (2-3/4”)

A screw with a diameter of 4 mm (5/32”) can be used. [Hole depth: 10 mm (13/32”)]

NS-P270

NS-P276

+ 11 hidden pages