Yamaha avx 700

Page 1

STEREO AMPLIFIER

w AVX-700

SERVICE MANUAL

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/- IMPORTANT NOTICE -\

i This manual has been provided for the use at authorized Yamaha Retailers and their service
personnel. It has been assumed that basic service procedures inherant 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. compo-
nents and failure of the product to perform as specified. Forthese reasons, we
advise all Yamaha product owners that all 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 authoriIation, certification or recognition of any applicable technic-
al capabilities, or establish a principle

) The data provided is believed to be accurate and applicable to the unitis) indicated on the
cover. The research, engineering, and service departments of Yamaha are continually
striving to improve Yamaha products. Modifications are, therefore, inevitable and specifica-
tions are subiect to change without notice or obligation to retrofit. Should 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 iheavy gauge black wires connect to this buss):

IMPORTANT: Turn the unit OFF during disassembly and parts replacement, Recheck all
work beiore you apply power to the unit.

\ /
TOSERVICEPERSONNEL.......... ....... ICBLOCK.. ................7~10
REMOTE CONTROL TRANSMITTER . . . . . . . . BLOCK DIAGRAM . . . . . . . . . . . . . . . . . . . . 11
REAR PANELS . . . ...... . ..... . . . . . INTERCONNECT WIRING DIAGRAM . . ...... . 12
SPECIFICATIONS . . . . . . . . PRINTED CIRCUIT BOARD . . . ...... . . . . 13~ 15
INTERNALVIEW ...... .. SCHEMATICDIAGRAM................16~17

) DISASSEMBLYPROCEDURES.....7. PARTSLIST............ ..... .......18~32

ADJUSTMENTS

YAMAHA

YAMAHA CORPORATION
FOBox l, Hamamatsu, Japan

3.2K-i71 ©© Printed in Japan '90.1

OOL'XAV

Page 2

AVX~700

I TO SERVICE PERSONNEL

1.

Critical Components Information.

Components having special characteristics are marked A
and must be replaced with parts having specifications
equal to those originally installed.

. Leakage Current Measurement (For 120V Model Only).

When service has been completed, it is imperative that
you verify that all exposed conductive surfaces are
properly insulated from supply circuits.

Meter impedance should be equivalent to 1500 ohm
shunted by 0.15;LF.

Leakage current must not exceed 0.5mA.

Be sure to test for leakage with the AC plug in both
polarities.

I REMOTE CONTROL TRANSMITTER

e U.S.A., Canadian, Australian and General models

EQUIPMENT AC LEAKAGE TESTER
UNDER TEST OR EQUIVALENT
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OUTL T INSULATING TABLE 2
' POLARIZATION

This tuner product is equipped with a polarized alternat-
ing-current line plug (a plug having one blade wider than
the other). This plug will fit into the power outlet only one
way. This is a safety feature. (U, C Model only)

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