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HOME THEATER SOUND SPEAKER SYSTEM
NS-P240/NS-P246
SERVICE MANUAL
NS-P240/NS-P246 is composed of NX-S120, NX-C120 and SW-P240.
NS-P240/NS-P246 NX-S120 NX-C120 SW-P240
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 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.
■ CONTENTS
TO SERVICE PERSONNEL . . . . . . . . . . . . . . . . . . . . 2 FRONT PANELS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 REAR PANELS . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–4 SPECIFICATIONS / . . . . . . . . . . . . . . . . . . 4–6
SW-P240 INTERNAL VIEW . . . . . . . . . . . . . . . . . . . . 6 SW-P240 DISASSEMBLY PROCEDURES /
SW-P240 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
7 |
SW-P240 BLOCK DIAGRAM . . . . . . . . . . . . . . . . . . . 8 SW-P240 PRINTED CIRCUIT BOARD . . . . . . . . . . . . 9 SW-P240 SCHEMATIC DIAGRAM . . . . . . . . . . . . . . 10 PARTS LIST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11–15
1 0 0 8 8 0
P240-NSP246-NS
NS-P240/NS-P246
■ 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 ohm shunted by 0.15 F.
WALL |
EQUIPMENT |
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AC LEAKAGE |
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TESTER OR |
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OUTLET |
UNDER TEST |
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EQUIVALENT |
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INSULATING
TABLE
●Leakage current must not exceed 0.5mA.
●Be sure to test for leakage with the AC plug in both polarities.
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-P240 |
▼ NX-C120 |
▼ NX-S120 |
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x 4 (for NS-P240) |
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x 5 (for NS-P246) |
NS-P240 NS-P246
2
NS-P240/NS-P246
■ REAR PANELS
▼ SW-P240 (U, C models)
▼ SW-P240 (R, L models)
▼ SW-P240 (T model)
▼ SW-P240 (K model)
▼ SW-P240 (A model)
▼ SW-P240 (B, G models)
KTL SU09109-
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NS- |
NS- |
3 |
P246 |
P240 |
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NS-P240/NS-P246
▼ SW-P240 (J model) |
▼ NX-S120 |
NX-S120
IMPEDANCE |
6 |
OHMS |
NOMINAL INPUT |
30 |
WATTS |
MAXIMUM INPUT |
100 |
WATTS |
▼ NX-C120
NX-C120
IMPEDANCE |
6 |
OHMS |
NOMINAL INPUT |
30 |
WATTS |
MAXIMUM INPUT |
100 |
WATTS |
NS-P240 NS-P246
4
■ SPECIFICATIONS /
● NX-S120
Type / . . . . . . . . . . . . |
Full Range Acoustic Suspension |
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Magnetic Shielding Type |
Driver /
. 5 cm (2”) Cone Magnetic Shielding Type x 2
Frequency Response /
. . . . . . . . . . . . . . |
. . . . . . . . 100 Hz to 25 kHz |
Impedance / |
. . . . . . . . . . . . . . . 6 ohms |
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Nominal Input / . . . |
. . . . . . . . . . . . . . . . . 30 W |
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Maximum Input / . |
. . . . . . . . . . . . . . . . 100 W |
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Sensitivity / |
. . . . . . . . 86 dB/2.83 V/m |
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Input Terminal / . . |
. . . . . . . . . . . . Push Type |
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Dimensions (W x H x D) / × × |
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72 mm x 170 mm x 108 mm |
(2-13/16” x 6-11/16” x 4-1/4”) |
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Weight / . . . . . . . . . . . . |
. . . . . . . . . . 0.9 kg (2 lbs.) |
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Finish / . . . . . . . . . . . |
. . . . . . . . . . . . Silver color |
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Black color |
Appropriate Speaker Stand / . . . SPS-80
Appropriate Speaker Bracket / . . . SPM-8S
● NX-C120
Type / . . . . . . . . . . . . Full Range Acoustic Suspension Magnetic Shielding Type
Driver /
. 5 cm (2”) Cone Magnetic Shielding Type x 2
Frequency Response /
. . . . . . . . . . . . . . . . . . . . . . 100 Hz to 25 kHz
Impedance / . . . . . . . . . |
. . . . . . 6 ohms |
Nominal Input / . . . . . . . . . . . . |
. . . . . . . . 30 W |
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Maximum Input / . . . . . . . . . . . |
. . . . . . 100 W |
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Sensitivity / . . . . . . . . |
86 dB/2.83 V/m |
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Input Terminal / . . . . . . . . . . . . |
. . Push Type |
Dimensions (W x H x D) / × ×
. . . . . . . . . . . . . 300 mm x 72 mm x 105 mm (11-13/16” x 2-13/16” x 4-1/8”)
Weight / . . . . . . . . . . . . . . . . . 1.1 kg (2 lbs. 6 oz.)
Finish / . . . . . . . . . . . . . . . . . . . . . . . Silver color Black color
● SW-P240
Type / . . . . . Advanced Yamaha Active Servo Technology
Output Power / . . . . . 50 W (100 Hz, 5 ohms, 10 % THD)
Dynamic Power / . . . . . . |
100 W, 5 ohms |
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Input Impedance / |
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INPUT (PJ) . . . . . . . . . . . . . . . . . . . . . . |
. . 12 k-ohms |
Frequency Response / . . . . 30 Hz to 200 Hz
Driver / . . . . . |
16 cm (6-1/2”) cone |
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Magnetic Shielding Type |
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Input Section / |
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INPUT . . . . . . . . |
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. . . . . RCA Pin Jack |
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Power Supply / |
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U, C models . . . . |
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. . . AC 120 V, 60 Hz |
R, T, K, L models |
. . AC 110-120/220-240 V, 50/60 Hz |
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A model . . . . . . . |
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. . . AC 240 V, 50 Hz |
B, G models . . . . . |
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. . . AC 230 V, 50 Hz |
J model . . . . . . . . |
. . . . . . . . . . . |
. AC 100 V, 50/60 Hz |
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Power Consumption / |
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U, C, A, B, G, R, T, K, L models . |
. . . . . . . . . . . . 40 W |
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J model . . . . . . . . |
. . . . . . . . . . . |
. . . . . . . . . . . . 25 W |
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Dimensions (W x H x D) / × × |
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. . . 200 mm x 365 mm x 390 mm |
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(7-7/8” x 14-7/20” x 15-5/16”) |
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Weight / . . . . . . |
. . . . . . . . . . |
8.4 kg (18 lbs. 8 oz.) |
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Finish / |
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Silver color . . . . . . |
U, C, R, T, K, A, B, G, L, J models |
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Black color . . . . . . |
. . . . . . . . . . U, C, R, A, G models |
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NS-P240/NS-P246
● 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.
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
J ....... Japanese model
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NS- |
NS- |
5 |
P246 |
P240 |
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