Onkyo A 8420 Service Manual

Page 1

A-B 420

SERIAL No. 3269

ONKYO SERVICE MANUAL

Integrated Stereo Amplifier
MODEL A-8420 A-8130

, _ 71-7 -
(K? I 320\- AC. 5'0]. J

SAFETY-RELATED COMPONENT WARNINGII TABLE OF CONTENTS

COMPONENTS IDENIIFIED IIY MARK A ON THE IILIII Page
SCHEMAIIC DIAGRAM AND IN THE PARTS LIST ARE spmficmiuns 3
CRITICAL FOR RISK OI" FIRE ANI) ELECTRIC SHOCK, P u _ .
REPLACE THESE COMPONENTS wmI ONKYO IAR'I'S m -
WHOSE PARTS NUMBERS APPEAR AS SHOWN IN THIS [HOUR \IiiIgIJIII 3
MANUAL. Adjustmum proccdmcs 4
MAKE LEAKAGECURRLN'I' OR RESISTANCE Ml-ZA» m PM S I
SlIRIIhIIiNTS TO DETERMINE TIIAT EXPOSED PARTS kiwi. ExplquIl View 5
ARE ACCEP'IAHLY INSULATED FROM THE. SUPPLY We vim Wish (_
CIRCUIT BEFORE RETURNING 'IIIIi APPLIANCE T0 . _
Tllli CUSTOMER bysII-III cunncunnns I)
Primed cirqul ImunI pang lIsl 7
Iuckmy pIHL'ElIIHlIS 9
Irinml ciIuIIII huzml View 10
SLIILHIHIIL LEI;II,1I:IIII ll

ONKiR) I
IPAlllllfl BUMPIINENEI

Page 2

ONKYO® SERVICE MANUAL

Integrated Stereo Amplifier
MODEL A-8420

umwo

UC-

SAFETY-RELATED COMPONENT WARNING

COMPONENTS IDENTIFIED BY MARK A ON THE
SCHEMATIC DIAGRAM AND IN THE PARTS LIST ARE
CRITICAL FOR RISK OF FIRE AND ELECTRIC SIIOCK.
REPLACE THESE COMPONENTS WITH ONKYO PARTS
WHOSE PARTS NUMBERS APPEAR AS SHOWN IN THIS
MANUAL

MAKE LEAKAGE-CURRENT OR RESISTANCE MEA-
SUREMENTS TO DETERMINE THAT EXPOSED PARTS
ARE ACCEPTABLY INSULATED FROM THE SUPPLY
CIRCUIT BEFORE RETURNING TIIE APPLIANCE TO
THE CUSTOMER

220v AC, 50m J

A-8420

SERIAL No. 3269

TABLE OF CONTENTS

Item Page
Specifications 2
Precautions 2
Block (lizlgrmn 3
Adjustment procedures 4
Front panel facilities 4
Chassis exploded View 5
Exploded View parts list 6
System connections 6
Printed circuit board parts list 7
Packing procedures 9
Primed circuit lmard view I0
Schematic diagram 11

ONKYO *
Alllilll BUMPIINENIS