SERIAL NO, 3258
ONKYO.:
SERVICE MANUAL
QUARTZ SYNTHESIZED
TUNER AMPLIFIER
MODEL TX-7430
SAFETY-RELATED
COMPONENT WARNING!!
TABLE
OF
CONTENTS
COMPONENTS
IDENTIFIED BY MARK
Z\ ON THE
Specifications
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SCHEMATIC DIAGRAM AND IN THE PARTS LIST ARE
Service procedures .. 6.6... eee eee
CRITICAL FOR RISK OF FIRE AND ELECTRIC SHOCK.
Exploded view .... 0.0.6...
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REPLACE THESE COMPONENTS WITH ONKYO PARTS
2
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WHOSE PARTS NUMBERS APPEAR AS SHOWN IN THIS
Circuit descriptions .. 2... 6...
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MANUAL.
Block diagram — Amp.section-...........0.0.,
= FUSE SCCHON RS
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MAKE
LEAKAGE-CURRENT
OR RESISTANCE
MEA-
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SUREMENTS
TO DETERMINE
THAT
EXPOSED PARTS
PaCKNG VIEW
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ARE
ACCEPTABLY
INSULATED
FROM
THE
SUPPLY
Adjustment procedures:
2.
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CIRCUIT
BEFORE
RETURNING
THE
APPLIANCE
TO
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THE CUSTOMER.
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FM/AM tuner
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VOMMIIME
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Schematic diagram
ATID. SCENON:
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