Onkyo TX 84 Service Manual

Page 1

TX-84/ TX-84M

SERIAL NO. 3257

ONKYOO SERVICE MANUAL

QUARTZ SYNTHESIZED
TUNER AMPLIFIER

MODELS TX-84/ TX-84M
Blank model
BHUD, BHUDN 120v AC, 60Hz
BHUG 220v AC, 50Hz
BHUQ 240V AC, 50H:
BHUWX 120/220V AC, 50/60Hz

SAFETY-RELATED COMPONENT WARNING
COMPONENTS INDENTIFIED BY MARK AON
THE SCHEMATIC DIAGRAM AND IN THE
PARTS LISTARE CRITICAL FOR RISK OF FIRE
AND ELECTRIC SHOCK. REPLACE THESE
COMPONENTS WITH ONKYO PARTS WHOSE
PARTS NUMBERS APPEAR AS SHOWN IN THIS
MANUAL.

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

ONKYO®
AIIIIIII IIIIMPIIIIIIIIS

_1_

TABLE OF CONTENTS

Specifications .............................. 2
Service procedures .......................... 3
Exploded View ............................. 4
Pans list ................................ 5
Circuit descriptions .......................... 6
Block diagram-Amy section - ................... 12
7 Tuner section 7 .................. 13
Block diagramot 1C .......................... 14
Packing View .............................. 17
Adjustment procedures ........................ 18
Pc board view/parts list
Power am p .............................. 21
FM/ AM tuner ............................ 25
Display ............................... 29
Preamp ................................ 30
Remote control ........................... 33
Switch ................................ 33
Speaker ............................... 34
Volume ............................... 34
Schematic diagram
Amp, section 7 120V 7 ...................... 23
7 Other - ..................... 35
Tuner section-120V7 ....................... 27
-Other 7 .................... 31
Disassembling procedures ....................... 37

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