Yamaha rx v373

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AV RECEIVER

RX-V373/HTR-3065

SER E MANU

Note:

When the following parts are replaced, the model name and destination MUST be written to the backup IC (EEPROM:
l0221 on DIGITAL P.C.B.) to have proper Operation. (For details, refer to 22 SOFT SWITCH" menu Of the self
diagnostic function.)

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0 EEPROM: [0221 on DIGITAL P.C.B.

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IMPORTANT NOTICE

This manual has been provided for the use of authorized YAMAHA Retailers and their setyice personnel,
It has been assiinred 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 I'quIII'ed 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 pl'tnciplesc'lgem relationship of any form
The data provided is believed to be accurate and applicable to the iinrtts) indicated on the cover, The research engineering and service
departments of YAMAHA are coutrniially striving to Improve YAMAHA products, Modifications are. therefore, inevitable and
specifications are subyect to change without notice or obligation to retrofit, Should arty 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 iii the unit (heavy gauge blach wires connect to this buss).

IMPORTANT: Tum the unit OFF during drsassembly and part replacement. Reclleck all work before you apply power to the unit.

I CONTENTS

TO SERVICE PERSONNEL
FRONT PANELS
REAR PANELS ..
REMOTE CONTROL PANELS
SPECIFICATIONS / afiifli .....
INTERNAL VIEW .....................................................
SERVICE PRECAUTIONS I fi- EXEUJiIEEIE
DISASSEMBLY PROCEDURES / mafia ..
UPDATING FIRMWARE/
77-Lu71707'y 7?-I~ .............................. 22-26
SELF-DIAGNOSTIC FUNCTION /

GM 77 (a agefimaag) ....................................... 27-52

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This Service Manual uses IeCyCled paper.

DISPLAY DATA
IC DATA ...........
BLOCK DIAGRAMS .
PRINTED CIRCUIT BOARDS
PIN CONNECTION DIAGRAMS .
SCHEMATIC DIAGRAMS ........
REPLACEMENT PARTS LIST .
REMOTE CONTROL
CONFIGURING THE SYSTEM SETTINGS .
:JXT-AEQEEEETZ:

YAMAHA

YAMAHA CORPORATION
P.O.Box 1, Hamamatsu, Japan

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RX-V373/HTR-3065

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
IE9 CAUTION

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.

EAEV F1501: FOR CONTINUED PROTECTION AGAINST RISK OF FIRE, REPLACE ONLY WITH SAME TYPE 6A,

125V FUSE."

For C model
CAUTION

F1501: REPLACE WITH SAME TYPE 6A, 125V FUSE.

ATTENTION

F1501: 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 / fifial \DfiIZ'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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