Yamaha as 3000

Page 1

INTEGRATED AMPLIFIER

A-S3000

SERV CE MANUAL

IMPORTANT NOTICE

This manual has been provided for (he use of aIIThOl'iZed Yamaha Reiailers and IheIr service personnel.

I! has been assumed Thm ba

. SeKVICe procedures inherent to the industry. and more specifically Yamaha Products. are already known
and understood by the users. and have theretore not been restated,
WARNING: Failure to follow appropriate service and safety procedures when servicing this product may result in personal injury
destruction Of expensive cotiiponents. and failure of the product to perform as specified. For these reasons. we advise
all Yamalia ptodiict owtiers that atiy service required should he performed by an authorized Yamaha Retailer or the
appointed service representative,
IMPORTANT: The presentation or sale ot this trianual to any individual or firm does not constitute authorization. ceitification or
recogtiition of atiy applicable technical capabilities. or establish a principleeagem relationship of any form
The data provided is believed to be accurate and applicable to the iimtts> indicated on the cover. The research. engineering and service
departments of Yamaha are cotitiiiually strivmg to improve Yamaha products. Modifications are. therefore, itievitable and specifications
are subject to change without notice or obligation to retrofit. Should any discrepancy appear to exist. please contact the disli'ibuiors
Service Division.
WARNING: static discharges can destroy expensive components Discharge any static electricity your body may have
accumulated by grounding yourselfto the ground buss iii the unit (heavy gauge black wires connect to this buss).

IMPORTANT: Turn the unit OFF during disassemhly and part replacement Recheck all work before you apply power to the unit.

I CONTENTS

To SERVICE PERSONNEL ............................................ 2 AMPLIFIER ADJUSTMENT/ 777mg ............... 32-34
FRONT PANELS ............................................................. 3 3 DATA ---------------------------------- 35-40
REAR PANELS ........................................................... 4-6 PIN CONNECTION DIAGRAMS - 41
REMOTE CONTROL PANEL .......................................... 7 BLOCK DIAGRAMS 42-43
SPECIFICATIONS I agflfi WIRING DIAGRAMS . 44-45
iNTERNAL VIEW _ PRINTED CIRCUIT BOARDS ................................. 46-64
SERVICE PRECAUTIONS / fi-Ezfiafiifégxfi 9 SCHEMATIC DIAGRAMS ....................................... 65-71
DISASSEMBLY PROCEDURES / 53%;; IIIIIIIIIII 10_20 REPLACEMENT PARTS LIST ................................ 73-99
UPDATING FIRMWARE] REMOTE CONTROL ................................................... 100

77-A0:7®7v7¥-I~ ............................ 21-25
SELF-DIAGNOSTIC FUNCTION I
GM 7' 7 (a Eliafifiwsfi) ..................................... 26-31

YAMAHA

YAMAHA CORPORATION

P.O.Box 1, Hamamatsu, Japan
13.10

OOOCS'V

Page 2

A-S3000

A-S3000

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 uF.

For U model
EB CAUTION
LALv
FUSE."
For C model
CAUTION

F1: REPLACE WITH SAME TYPE 10A, 125V FUSE.

ATTENTION

AC LEAKAGE
WALL EQUIPMENT TESTER OR
OUTLET UNDER TEST EQUIVALENT

J:

INSULATING
TABLE

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

F1: FOR CONTINUED PROTECTION AGAINST RISK OF FIRE, REPLACE ONLY WITH SAME TYPE 10A, 125V

F1: UTILISER UN FUSIBLE DE RECHANGE DE MEME TYPE DE 10A, 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 fifial \yfiIZ'DLVC

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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