Yamaha av 80 y

Page 1

STEREO AMPLIFIER

" AV-80Y

SERVICE MANU

H model only / IMPORTANT NOTICE \

This manual has been provided for the use 0! authorized YAMAHA Raailexs and their service manual
It has been mined that basic texvice pmedures inhetant to the industry. and mom specifically YAMAHA
Products, are alrudy known and nndastood by the usets. and have theréom not been restated.

WARNING: Failure I.) follow nppmpriale mm: and fay pxoceduxs when servicing this product
may unit in pascnal injury. destruction of expensive component! and failure of the
product to Mom at specified. For these mm... we advise m YAMAHA product owners
um .11 mm required should be perfonnod by m momma YAMAHA Reuiler or the
appointed service repmentativc,

IMPORTANT: The mhfim or sale of Lhil manual to any individual or finn does not consn'mle
militarization, manna. or recogfixion of any applicable technical capabilities, or
establish a pdncipIe~lgetll tel-timship (i any fan.

Thc dau provided is believed to bc accurate and applicable to the fluids) indicated on the cover. Th: "such,

mgineeiing, and amioe dcpamnenu of YAMAHA are continually miving to improve YAMAHA pmductm

Modifications am madam, inevitable and spedficauonn axe subjecx to change without notice or obligation to

mom Should my discrepancy appeu to sxixt, please contact the dim-ibumn Suvice Division.

WARNING: suuc discharges cm demoy expatxive mpmenu, Discharge any Slide electricity your
body may have accumulated by grounding yourself to thz gmund bus: in the unit (heavy

auge black wire: connect to this but).
IMPORTANT: Tum the unit OFF dining disasta'nbly and pant xeplaocmmL Redneck all Wonk before you

\ apply pawn to this unit. /

I CONTENTS

n TO SERVICE PERSONNEL .
REAR PANELS..

PRINTED CIRCUIT BOARD ...............
INTERCONNECT WIRING DIAGRAM

SPECIFICATIONS.
BLOCK DIAGRAM"
INTERNAL VIEW.
DISASSEMBLY PROCEDURES.
ADJUSTMENTS .....................................

p-COM DATA .........................
WAVEFORM OF TEST POINT
SCHEMATIC DIAGRAM ..
PARTS LIST
REMOTE CONTROL TRANSMITTER

YAMAHA

YAMAHA CORPORATION
OBox1 Hamamatsu Japan

IAKASAG Pfl® Printed in Japan. 9l .2

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AV-80Y

AV-80Y

I TO SERVICE PERSONNEL

1. Critical Components Information,

Components having special characteristics are marked and WALL EQUIPMENT TESTE/EKASE
must be replaced with parts having specifications equal to OUTLET UNDER TEST EQUIVALENT
those originally installed.
2, Leakage Current Measurement (For 120V Model Only). ® :3-
When service has been completed, it is imperative that you I
verify that all exposed conductive surfaces are properly insu- _
lated lrom supply circuits. INSULATING
0 Meter impedance should be equivalent to 1500 ohm shunted TABLE
by 0.15pF. o POLARIZATION (U, 0 models only)
This amplifier product is equipped with a polarized altemat-
. Leakage current must not exceed 0.5mA. ing-currenl line plug (a plug having one blade wider than the

other). This plug wtll lit into the power outlet only one way.

0 Be sure to'test for leakage with the AC plug in both This is a safety feature.

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 detects
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 sol-
der 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.

I REAR PANELS

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