Yamaha Ns-p240 p246

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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

iti f li bl t h i l biliti t bli h i i l t l ti hi f f

IMPORTANT NOTICE

SERVICE MANUAL

NS-P240/NS-P246HOME THEATER SOUND SPEAKER SYSTEM

NS-P240/NS-P246 is composed of NX-S120, NX-C120 and SW-P240.

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TO SERVICE PERSONNEL

1. Critical Components InformationComponents having special characteristics are marked Z

and must be replaced with parts having specifications equalto those originally installed.

2. Leakage Current Measurement (For 120V Models Only)

When service has been completed, it is imperative to verifythat all exposed conductive surfaces are properly insulatedfrom supply circuits.

Meter impedance should be equivalent to 1500 ohm shuntedby 0.15F.

AC LEAKAGETESTER OREQUIVALENT

EQUIPMENTUNDER TEST

INSULATINGTABLE

WALLOUTLET

Leakage current must not exceed 0.5mA.

Be sure to test for leakage with the AC plug in bothpolarities.

WARNING: CHEMICAL CONTENT NOTICE!

The solder used in the production of this product contains LEAD. In addition, other electrical/electronic and/orplastic (where applicable) components may also contain traces of chemicals found by the California Health andWelfare 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 FORANY REASON WHATSOEVER!

Avoid prolonged, unprotected contact between solder and your skin! When soldering, do not inhale solder fumesor expose eyes to solder/flux vapor!

If you come in contact with solder or components located inside the enclosure of this product, wash your handsbefore handling food.

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REAR PANELS

SW-P240 (U, C models) SW-P240 (T model) SW-P240 (R, L models)

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SW-P240 (J model)

NX-S120IMPEDANCENOMINAL

MAXIMUM

INPUT

INPUT

6 OHMS

30 WATTS100 WATTS

NX-C120IMPEDANCENOMINAL

MAXIMUM

INPUT

INPUT

6 OHMS30WATTS

100WATTS

NX-S120

NX-C120

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U ....... USA model

C ....... Canadian modelR ....... General modelT ....... Chinese modelK ....... Korean modelA ....... Australian modelB ....... British modelG ....... European modelL ....... Singapore model

SW-P240

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

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 / 16 cm (6-1/2) cone

Magnetic Shielding Type

Input Section /

INPUT . . . . . . . . . . . . . . . . . . . . . . . . . RCA Pin Jack

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

J model . . . . . . . . . . . . . . . . . . . . AC 100 V, 50/60 Hz

Power Consumption /

U, C, A, B, G, R, T, K, L models . . . . . . . . . . . . . 40 W

J model . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 W

Dimensions (W x H x D) /

. . . . . . . . . . . . 200 mm x 365 mm x 390 mm

(7-7/8 x 14-7/20 x 15-5/16)

Accessories/

NS-P240 . . . . . . . . . . . . . . . Subwoofer Cable (5m) x 1

Nonskid Pad x 4 (for subwoofer)

Speaker Cable (15 m) x 2


Nonskid Pads x 16

Mounting Bracket x 4, Screws x 4

Fasteners x 2

NS-P246 . . . . . . . . . . . . . . . Subwoofer Cable (5m) x 1

Nonskid Pad x 4 (for subwoofer)



Nonskid Pads x 20

Mounting Bracket x 5, Screws x 5

Fasteners x 2

* Specifications subject to change without notice.

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Unit : mm (inch)

300 (11-13/16") 105 (4-1/8")

72(2-13/16")

72 (2-13/16") 108 (4-1/4")

170(6-11/16"

)

NX-S120

NX-C120

200 (7-7/8") 390 (15-5/16")

365(14-3/8")

DIMENSIONS

SW-P240

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1. Removal of Front GrilleThe 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 tobe removed.

* When assembling the Rear Panel, check to ensure that

the packing is not damaged so as to prevent air leakage

from occurring.

SW-P240 DISASSEMBLY PROCEDURES(Remove parts in disassembly order as numbered.)

q

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SW-P240 BLOC K DIA GRA M

IC1B IC7A

VR1VOLUME

L.P.F.6dB/oct

H.P.F.12dB/oct

L.P.F.12dB/oct

6

57 5

7IC7B

IC4

IC3

A.N.I.C

LIMITER

RY131 2

IC2Q9D14, 15, 16

Q3, 4, 5, 8D9, 10, 11, 12

1

10

B

+B9

8

0.1

PROTECTION

+12

+B

B

12

REGULATOR

POWERSUPPLY

D3

Q1, D6

Q2, D7

F2

POWERSW2

SPEAKER

INPUT

+

POWER

AMP

A B C D E

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A B C D E

1

2

3

4

SW-P240 PRINTED CIRCUIT BOARD

POWER

P.C.B. MAIN (1)

P.C.B. MAIN (2)P.C.B. MAIN (3)

R, T, K, L models

U, C, A, B, G, J models

SW1 (R,T,K,L)

AC110~220VAC220~240V

BE

BE

WH

W

H

SW-P240

A B C D E

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A B C D E

1

2

3

4

NS-P24 0/NS-P24 6

PROTECTION

LIMITTER

MAIN (2)

MAIN (1)

15K SLR-56MG

5KA

0

0

0

0

0

0 0

0

0

0

0

0

-0.7

-0.7

1.1

1.4

3.10 0 0 0

11.634.2

11.6

34.2

-11.6

0

0

0

0 0

00

11.6

-11.6

SW-P240 SCHEMATIC DIAGRAM

IC1, 2, 7 : KIA4558PDual OP-Amp

+

OUT1

IN1

VCC

+VCC

OUT2

1

2

3

4 5

+IN1 IN2

+IN2

+

6

7

8

NS P2 40/NS P2 46

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ABBREVIATIONS IN THIS LIST ARE AS FOLLOWS :

C.A.EL.CHP : CHIP ALUMI. ELECTROLYTIC CAP

C.CE : CERAMIC CAP

C.CE.ARRAY : CERAMIC CAP ARRAYC.CE.CHP : CHIP CERAMIC CAP

C.CE.ML : MULTILAYER CERAMIC CAP

C.CE.M.CHP : CHIP MULTILAYER CERAMIC CAP

C.CE.SAFTY : RECOGNIZED CERAMIC CAP

C.CE.TUBLR : CERAMIC TUBULAR CAP

C.CE.SMI : SEMI CONDUCTIVE CERAMIC CAP

C.EL : ELECTROLYTIC CAP

C.MICA : MICA CAP

C.ML.FLM : MULTILAYER FILM CAP

C.MP : METALLIZED PAPER CAP

C.MYLAR : MYLAR FILM CAPC.MYLAR.ML : MULTILAYER MYLAR FILM CAP

C.PAPER : PAPER CAPACITOR

C.PLS : POLYSTYRENE FILM CAP

C.POL : POLYESTER FILM CAP

C.POLY : POLYETHYLENE FILM CAP

C.PP : POLYPROPYLENE FILM CAP

C.TNTL : TANTALUM CAP

C.TNTL.CHP : CHIP TANTALUM CAP

C TRIM : TRIMMER CAP

L.DTCT : LIGHT DETECTING MODULE

L.EMIT : LIGHT EMITTING MODULE

LED.DSPLY : LED DISPLAYLED.INFRD : LED, INFRARED

MODUL.RF : MODULATOR, RF

PHOT.CPL : PHOTO COUPLER

PHOT.INTR : PHOTO INTERRUPTER

PHOT.RFLCT : PHOTO REFLECTOR

PIN.TEST : PIN, TEST POINT

PLST.RIVET : PLASTIC R IVET

R.ARRAY : RESISTOR ARRAY

R.CAR : CARBON RESISTOR

R.CAR.CHP : CHIP RESISTOR

R.CAR.FP : FLAME PROOF CARBON RESISTORR.FUS : FUSABLE RESISTOR

R.MTL.CHP : CHIP METAL FILM RESISTOR

R.MTL.FLM : METAL FILM RESISTOR

R.MTL.OXD : METAL OXIDE FILM RESISTOR

R.MTL.PLAT : METAL PLATE RESISTOR

RSNR.CE : CERAMIC RESONATOR

RSNR.CRYS : CRYSTAL RESONATOR

R.TW.CEM : TWIN CEMENT FIXED RESISTOR

R WW : WIRE WOUND RESISTOR

ELECTRICAL PARTS

PARTS LIST

WARNING

Components having special characteristics are marked Z and must be

replaced with parts having specifications equal to those originally installed.

Z

NS P2 40/NS P2 46

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SW-P240 P.C.B. MAIN

NS-P240/NS-P246

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Note) Those parts marked with # are not included in the P.C.B. ass'y.

SW-P240 P.C.B. MAIN

Z

Z

Z

Z

Z

Z

Z

Parts List for Carbon Resistors

1/6WType Part No.

HF457100

HF457110

HF857120

HF457130

HF457150

HF457180

HF457220

HF457240

HF857270

HF457300

HF457330

HF457360

HF457390

HF457470

HF457510

HF457560

HF457620

HF457680

HF457820

HF457910

HF458100

HF458110

HF458120

HF458150

HF458180

HF858220

HF458270

HF458300

HF458330

HF858390

HF458470

HF858560

HF858680

HF858820

HF459100

HF859150

HF859180

HF859220

HF859330

HF859470

1/4WType Part No.

HF45 7100

HF45 7110

HJ357120

HF457130

HF457150

HF457180

HF457220

HF457240

HJ357270

HF457300

HF457330

HF457360

HF457390

HF457470

HF457510

HF457560

HF457620

HF457680

HF457820

HF457910

HF458100

HF458110

HF458120

HF458150

HF458180

HJ358220

HF458270

HF458300

HF458330

HJ358390

HF458470

HJ358560

HJ358680

HJ358820

HF459100

HJ359120

HJ359150

HJ359180

HJ359220

HJ359330

HJ359390

HJ359470

Value

10 k-ohms

11 k-ohms

12 k-ohms

13 k-ohms

15 k-ohms

18 k-ohms

22 k-ohms

24 k-ohms

27 k-ohms

30 k-ohms

33 k-ohms

36 k-ohms

39 k-ohms

47 k-ohms

51 k-ohms

56 k-ohms

62 k-ohms

68 k-ohms

82 k-ohms

91 k-ohms

100 k-ohms

110 k-ohms

120 k-ohms

150 k-ohms

180 k-ohms

220 k-ohms

270 k-ohms

300 k-ohms

330 k-ohms

390 k-ohms

470 k-ohms

560 k-ohms

680 k-ohms

820 k-ohms

1.0 M-ohms

1.2 M-ohms

1.5 M-ohms

1.8 M-ohms

2.2 M-ohms

3.3 M-ohms

3.9 M-ohms

4.7 M-ohms

1/6WType Part No.

HF853100

HF853220

HF853330

HF853470

HF853560

HF454100

HF854150

HF454220

HF854270

HF454330

HF854390

HF454470

HF454560

HF454680

HF454750

HF454820

HF454910

HF455100

HF855110

HF455120

HF455150

HF455180

HF455200

HF455220

HF455270

HF455330

HF455390

HF455430

HF455470

HF455510

HF455560

HF455680

HF455820

HF455910

HF456100

HF456120

HF456150

HF456180

HF856200

HF456220

HF856240

HF456270

HF456300

HF456330

HF856360

HF456390

HF456470

HF456510

HF456560

HF456680

HF456820

HF456910

1/4WType Part No.

HJ35 3100

HJ35 3180

HJ35 3220

HJ35 3330

HJ35 3470

HJ35 3560

HF454100

HJ35 4150

HF45 4220

HJ35 4270

HF454330

HJ35 4470

HF454470

HF454560

HF454680

HF454750

HF454820

HF454910

HF455100

HJ35 5110

HF455120

HF455150

HJ35 5160

HF455180

HF455200

HF455220

HF455270

HF455330

HF455390

HF455430

HF455470

HF455510

HF455560

HF455680

HF455820

HF455910

HF456100

HF456120

HF456150

HF456180

HJ35 6200

HF456220

HJ35 6240

HF456270

HF456300

HF456330

HJ35 6360

HF456390

HF456470

HF456510

HF456560

HF456680

HF456820

HF456910

Value

1.0 ohms

1.8 ohms

2.2 ohms

3.3 ohms

4.7 ohms

5.6 ohms

10 ohms

15 ohms

22 ohms

27 ohms

33 ohms

39 ohms

47 ohms

56 ohms

68 ohms

75 ohms

82 ohms

91 ohms

100 ohms

110 ohms

120 ohms

150 ohms

160 ohms

180 ohms

200 ohms

220 ohms

270 ohms

330 ohms

390 ohms

430 ohms

470 ohms

510 ohms

560 ohms

680 ohms

820 ohms

910 ohms

1.0 k-ohms

1.2 k-ohms

1.5 k-ohms

1.8 k-ohms

2.0 k-ohms

2.2 k-ohms

2.4 k-ohms

2.7 k-ohms

3.0 k-ohms

3.3 k-ohms

3.6 k-ohms

3.9 k-ohms

4.7 k-ohms

5.1 k-ohms

5.6 k-ohms

6.8 k-ohms

8.2 k-ohms

9.1 k-ohms

1992

1/4W Type

HF45

1/6W Type

HF85

1/4W Type

HJ35

10mm5mm

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MECHANICA L PARTS

Z

Z

Z

Z

Z

Z

Z

Z

Z

Z

Z

Z

NS-P240/NS-P246

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MEMO

NS-P240/NS-P246

Documents

Yamaha Ns-p240 p246