Yamaha ns p240 NS P246

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HOME THEATER SOUND SPEAKER SYSTEM

NS-P240/NS-P246

SERVICE MAN UAL

NS-P240/NS-P246 is composed of NX-S120, NX-C120 and SW-P240.
NS-P240/NS-P246D [I NX-SlZOl] NX-ClZOD SW-P24OD I] [I I] I] [I I] n n I]

/ IMPORTANT NOTICE \

This manital 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 ,ers. and have iherefore not been restated,

WARNING: Failure to follow appropriate service and satety procedures when seryicing this product may result in personal
injury, destruction or 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 servtce representative.

IMPORTANT: The presentation or sale of this manual to any individual or titm does not constitute authorization, cenificalion or
recognition of any applicable technical capabilities, or establish a prinprlesagem relationship orany ftmn.

The data provided is belreved to be accurate and applicable to the unms) indicated on the cover. The research, engineering, and servtce
departments ot YAMAHA are coniiniially striving to improve YAMAHA products. Moditicattons are, therefore, inevitable and
specificalmns are subyect to change without notice or obligation to retrofit. Should any discrepancy appear to exisl. please contact the
distributors Setvrce Division.

WARNING: static discharges can destroy expensive components. Discharge any static electricity your body may have
accumulated by grounding ynurself to the ground buss in the unit (heavy gauge black wires connect to this buss).
. IMPORTANT: Tum the unit OFF during disassemhly and part replacement. Recheck all work before you apply power to the unit.

I CONTENTS

TO SERVICE PERSONNEL
FRONT PANELS . ..
REAR PANELS
SPECIFICATIONS / [I D a I] ...
sw-P24o INTERNAL VIEw .
sw-P24o DISASSEMBLY PROCEDURES/
SW-P24OD I] [I D

SW-P240 BLOCK DIAGRAM . .
SW-P24O PRINTED CIRCUIT BOARD .
SW-P240 SCHEMATIC DIAGRAM . . .
PARTS LIST . .

..8
..9
.10
....11-15

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This Service Manual uses recycled paper.

.YAMAHA

YAMAHA CORPORATION
POBox l, Hamamaisu, Japan

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NS-P24OINS-P246

I TO SERVICE PERSONNEL

. . . AC LEAKAGE
1. Critical Components Information WALL EQUIPMENT TESTER OR
Components having special characteristics are marked A OUTLET UNDER TEST EQU|VALENT
and must be replaced with parts having specifications equal
to those originally installed. ® :3-
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 INSULATING
from supply circuits. TABLE
0 Meter impedance should be equivalent to 1500 ohm shunted 0 Leakage current must 0t eXCSEd 0-5FHA-
by 0.15m:

0 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.

I FRONT PANELS

V SW-P240 V NX-C120 V NX-S120
x 4 (for NS-P240)
x 5 (for NS-P246)

00
11
NN
ate
UNIT
22