Yamaha rx v393 rds

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AV RECEIVER

RX-V393 R D S
RX-V493 R D S

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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.

IMPORTANT NOTICE \

The data provided is believed to be accurate and applicable to the unitts) 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

retrofitsShould any discrepancy appear to exist, please Contact the distributors 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

K apply power to the unit. / lav:
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I CONTENTS
TO SERVICE PERSONNEL .................... 1 DISPLAY DATA ............................. 16
FRONT PANELS ...... IC DATA ................................ 17~20
REAR PANELS ....... RX-V393RDS PRINTED CIRCUIT BOARD ..... 22~31
SPECIFICATIONS ..... RX-V493RDS PRINTED CIRCUIT BOARD ..... 32~41
INTERNAL VIEW ................... , BLOCK DIAGRAM ........................ 42~44
DISASSEMBLY PROCEDURES ............... 5~6 PIN CONNECTION DIAGRAM
SELF CHECK MODE ........................ 7~9 RX-V393RDS SCHEMATIC DIAGRAM ........ 46~49
PROTECTION OPERATION CHECK FUNCTION . .10 RX-V493RDS SCHEMATIC DIAGRAM . . . . . .- . .50~53
AMP ADJUSTMENTS ........................ 11 PARTS LIST ............................ . 54~76
TUNER ADJUSTMENTS ................... 12~15 REMOTE CONTROL TRANSMITTER ......... 77~78
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1.3K»0911 IE 6.) Printed in Japan '98.3

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RX-V393RDSIRX-V493RDS

I TO SERVICE PERSONNEL

Critical Components Inlormationi

Components having special characteristics are marked & WALL EQUIPMENT ¢gslfé§égE
and must be replaced with parts having specifications equal
to those originally installed. OUTLEI' UNDER TEST EQUIVALENT

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WARNING .
Do not change the IMPEDANCE SELECTOR switch setting while the power to this
unit Is on, otherwise thls unit may be damaged.