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8/10/2019 Yamaha Ns-p240 p246
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8/10/2019 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
Speaker Cable (4 m) x 3
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)
Speaker Cable (15 m) x 3
Speaker Cable (4 m) x 3
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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NS-P2 40/NS-P2 46
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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NS-P240/NS-P246
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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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16
MEMO
NS-P240/NS-P246