Yamaha NSP-220 Service manual

HOME THEATER SPEAKER SYSTEM

NS-P220

SERVICE MANUAL

NS-P220 is composed of NX-220P, NX-C220 and SW-P201.

The NX-220P and NX-C220 loudspeakers are not field serviceable and must be replaced as complete units.

● SW-P201

NS-P220

● NX-220P x 4

● NX-C220

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 injury, destruction of expensive

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

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

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

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.

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

ground buss in the unit (heavy gauge black wires connect to this buss).

■ CONTENTS

TO SERVICE PERSONNEL . . . . . . . . . . . . . . . . . . . .1

SW-P201 REAR PANELS . . . . . . . . . . . . . . . . . . . 1—2

SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . .3

SW-P201 DISASSEMBLY PROCEDURES . . . . . . . . .4

100771

SW-P201 BLOCK DIAGRAM . . . . . . . . . . . . . . . . . . .5

SW-P201 PRINTED CIRCUIT BOARD . . . . . . . . . 6—7

SW-P201 SCHEMATIC DIAGRAM . . . . . . . . . . . . . . . 8

PARTS LIST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9—14

NS-P220

■ TO SERVICE PERSONNEL

NS-P220

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 ohm 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

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.

AC LEAKAGE TESTER OR EQUIVALENT

■ SW-P201 REAR PANELS

▼ SW-P201 U, C models ▼ SW-P201 B,G models

▼ SW-P201 A model ▼ SW-P201 R model

NS-P220

■ SPECIFICATIONS

NS-P220

■ NX-220P & NX-C220

Type .....................2-way acoustic suspension speaker system

Magnetic shielding type

Driver....................................................8 cm (3-1/8") cone type

1.9 cm (3/4") balanced dome type

Nominal Input Power....................................................... 30 W

Maximum Input Power .................................................. 100 W

Impedance ..................................................................... 6 ohms

Frequency Response .................................. 140 Hz to 27 kHz

Sensitivity ......................................................... 86 dB/2.83 V,m

Dimensions (W X H X D)

NX-220P................................................ 100 x 140 x 113 mm

(3-15/16" x 5-1/2" x 4-7/16")

NX-C220 ............................................... 140 x 100 x 112 mm

(5-1/2" x 3-15/16" x 4-7/16")

Weight

NX-220P............................................. 0.7 kg (1 lbs. 9 oz) x 4

NX-C220 ............................................ 0.7 kg (1 lbs. 9 oz) x 4

Finish ...................................................Black color (R, A, B, G)

Black Gray color (U, C)

Silver color

■ SW-P201

Type................... Advanced Yamaha Active Servo Technology

Output Power ..........50 W(100 Hz, 5 ohms at T.H.D. = 10 %)

Input Sensitivity

INPUT1 (SP) ......................................................... 1.2 V

INPUT2 (PJ)........................................................ 55 mV

Input Impedance

INPUT1 (SP) ................................................ 4.7 k-ohms

INPUT2 (PJ).................................................. 12 k-ohms

Frequency Response .................................... 30 Hz to 200 Hz

Speaker Unit ............................................ 16 cm (6-5/16") cone

Magnetic shielding type

Input Section

INPUT1................................................Speaker terminal

INPUT2......................................................RCA pin jack

Output Section ...............................................Speaker terminal

(parallel connect)

Operating Section .................................... Bass volume control

Power switch

Auto standby switch (H-L-OFF)

Power Supply

U, C models .................................................... AC120V, 60 Hz

A model ........................................................... AC240V, 50 Hz

B, G models .................................................... AC230V, 50 Hz

R model ................................ AC110-120/220-240V, 50/60 Hz

Power Consumption ........................................................ 4 2 W

Dimensions (W x H x D ) ......................... 200 x 395 x 384 mm

(7-7/8" x 15-9/16" x 15-1/8")

Weight ........................................................ 9.3 kg (20 lbs. 8oz)

Finish ...................................................Black color (R, A, B, G)

Black Gray color (U, C)

Silver color

■ ACCESSORIES

* Specifications subject to change without notice.

● NX-220P

100 (3–15/16")

140 (5–1/2")

● NX-C220

140.4 (5–1/2")

● SW-P201

200.6 (7–7/8")

(1–3/4")

395.6 (15–9/16")

Pin Cord (3 m) x 1

Speaker Cable (15 m) x 2

Speaker Cable (4 m) x 3

Bracket (typeAx 3, typeB x 2, typeC x 5)

Screw with flange x 8

Wing Bolt x 2

U . . . . . . . . . . . . . USA model

C . . . . . . . . . Canadian model

A . . . . . . . . Australian model

B . . . . . . . . . . . British model

G . . . . . . . . . European model

R . . . . . . . . . . General model

111.5 (4–3/8")

20 (13/16")

111.6 (4–3/8")

20.1 (13/16")

100.2 (3–15/16")

389 (15–5/16")

335 (13–3/16")

390.1 (15–3/8")

(3/8")

5.5 (3/16")

Units : mm (inch)

■ SW-P201 DISASSEMBLY PROCEDURES

(Remove parts in the order as numbered.)

1. Removal of Front Grille

The front grille is fixed to the 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 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 ) in Fig. 2.

* Arrow marks ( ) are printed to identify the screws to be

removed.

NS-P220

Fig. 1

NS-P220

* When assembling the Rear Panel, check to ensure that

the packing is not damaged so as to prevent air leakage from occurring.

Fig. 2

+ 10 hidden pages