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HOME THEATER PACKAGE YHT-S300/YHT-S350/YHT-S400/YHT-S1400

SUBWOOFER INTEGRATED RECEIVER SR-300
SPEAKERS NS-BR300/NS-P705/NS-B380

SER CE MANUAL

The YHT-SSOO consists of the SRsSOO and NSsBSBO.

The YHT-5350 consists of the SRsSOO and NSsP705.

The YHT-S400 consists of the SRsSOO and NSsBRBOO.

The YHT-S1400 consists of the SRsSOO, BDs81065 and NSsBS80.

This service manual is for the SRs300/NSsBRSOO/NSsP705/NSsBS80.

For service manual Of the BDsS1065, please refer tO the following publication number:

BDsS1900/BD781065: 101151

IMPORTANT NOTICE

This manual has been provided tor 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 vvhen servicing this product may result in personal injury.
destruction otexpeiisive components. and failure of the product to perform as specrtied. For these reasotis. we advise
all YAMAHA product owners that any service reqlllred should be performed by an authorized YAMAHA Retailer or
the appointed service representative.
IMPORTANT: The presentation or sale of this tnanual to any individual or firm does not constitute authorization, certification or
recognition or arty applicable techrncal capabilities. or establish a pi'tncipleragent relationship of any form.
The data provided is believed to be accurate and applicable to the iinrtis) indicated on the cover, Tire research. engineering. and service
departments ot YAMAHA are continually striving to rtnprove YAMAHA products, Moditications are. therefore. inevitable and
specifications are subject to change without notice or Obligation to retrotit. 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 yourselfto the ground buss in the unit (heavy gauge black vvires connect to this buss).

IMPORTANT: Tiirn the uttit OFF during drsassembly and part replacement Recheclt all work before you apply power to the unit.

I CONTENTS

TO SERVICE PERSONNEL .....................
SYSTEM COMPOSITION / axihfififi
FRONT PANELS
REAR PANELS ..
REMOTE CONTROL PANELS
SPECIFICATIONS / gait;
INTERNAL VIEW ..................
SERVICE PRECAUTIONS/
#- EXEQSIEEIE ..............................
DISASSEMBLY PROCEDURES I magma ..
UPDATING FIRMWARE]
77-A'717'07'iy 7?- I~ ............................ 20-26

15-19

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Thls Service Manual uses recycled paper.

Copyright © 2009 YAMAHA CORPORATION All rights reserved.
This manual is copyrighted by YAMAHA and may not be copied or
Iedlsmbuled either in print or electronically Without permission

WRITING SYSTEM MODEL NAME AND DESTINATION/

917-1? $114. A: limws'ewgfiiba; .............. 27-30
SELF-DIAGNOSTIC FUNCTION /

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DISPLAY DATA
IC DATA ...........
PIN CONNECTION DIAGRAMS .
BLOCK DIAGRAM ...................
PRINTED CIRCUIT BOARDS
SCHEMATIC DIAGRAMS ..
REPLACEMENT PARTS LIST .
REMOTE CONTROL ................

..101-102

YAMAHA

YAMAHA CORPORATION

P.O.Box 1, Hamamatsu, Japan
09. l l

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SR-300/NS-BR300/NS-P705/NS-3380

I TO SERVICE PERSONNEL

1. Critical Components lntormatlon
Components having special characteristics are marked A 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.

0 Meter impedance should be equivalent to 1500 ohms shunted
by 0.15 pF.

For U model
IE9 CAUTION

AC LEAKAGE
WALL EQUIPMENT TESTER OR
OUTLET UNDER TEST EQUIVALENT

J:

INSULATING
TABLE

- Leakage current must not exceed 0.5mA.
0 Be sure to test for leakage with the AC plug in both
polarities.

EAEV "F701: FOR CONTINUED PROTECTION AGAINST RISK OF FIRE, REPLACE ONLY WITH SAME TYPE 6A,

125V FUSE."

For C model
CAUTION

F701: REPLACE WITH SAME TYPE 6A, 125V FUSE.

ATI'ENTION

F701: UTILISER UN FUSIBLE DE RECHANGE DE MEME TYPE DE 6A, 125V.

WARNING: CHEMICAL CONTENT NOTICE!

This product contains chemicals known to the State of California to cause cancer, 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!

It you come in contact with solder or components located inside the enclosure of this product, wash your hands before

handling food.

About lead free solder l fifinl \yfiIZ'DLT

All of the P.C.B.s installed in this unit and solder joints are
soldered using the lead free solder.
Among some types of lead free solder currently available,
it is recommended to use one of the following types for
the repair work.

0 Sn + Ag + Cu (tin + silver + copper)

0 Sn + Cu (tin + copper)

0 Sn + Zn + Bi (tin + zinc + bismuth)

Caution:
As the melting point temperature of the lead free solder
is about 30°C to 40°C (50°F to 70°F) higher than that of
the lead solder, be sure to use a soldering iron suitable
to each solder.

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