Onkyo TX 810 Service Manual

Page 1

SERIAL NO. 3289

ONKYO SERVICE MANUAL

QUARTZ SYNTHESIZED
TUNER AMPLIFIER
MODEL TX-81O

Black model
BIIUD. BHUDN 120V AC. 60Hz
BHUG 220V AC, 50H:
BHUQA 240V AC, 50Hz
BHUW 120 or 220V AC. 50/60Hz

SAFETYrRELATED COMPONENT WARNING
COMPONENTS IDENTIFIED BY MARK A ON
THE SCHEMATIC DIAGRAM AND IN THE PARTS
LIST ARE CRITICAL FOR RISK OF FIRE AND
ELECTRIC SHOCK. REPLACE THESE COMPO
NENTS WITH ONKYO PARTS WHOSE PART
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 *
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TABLE OF CONTENTS

Specifications
Service pracedures --------
Exploded View -------
Parts list ------------
Block diagram """"""
Block diagram of IC
Adjustment procedures ---------------- 11
PC board view/parts list

IUDC Cuntrol ...................... 14
Equalizer amplifier ................... 14
Display ......................... 17
Power amplifier -------------------- 17
Power/speaker switch ------------------ I8
Tuner selector switch ------------------ 21
Schematic diagram
Wolrdwide model .................... 15
120V model ....................... 19
ZZO/ZAUV models -------------------- 23
Packing vie ....................... 26