Onkyo TX 900 Service Manual

Page 1

TX-900/TX-902

Ref. No. OM3394

ONKYO SERVICE MANUAL

QUARTZ SYNTHESIZED
TUNER AMPLIFIER
MODEL TX-900

MODEL TX-902

Black model

120V AC, 60Hz

BHMD, BHMDNV

BHMP, BHMPF

230V AC, 50Hz

BHMW

120V or 220V AC, 50/60Hz

BHMQA

240V AC, SOHz

SAFETYRELATED 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 LEAKAGECURRENT OR RESISTANCE
MEASUREMENTS TO DETERMINE THAT EXPOSED
PARTS ARE ACCEPTABLY INSULATED FROM
THE SUPPLY CIRCUIT BEFORE RETURNING
THE APPLIANCE TO THE CUSTOMER.

ON KYO
AIIIIIII IIIIMPIIIIIIIIS

TABLE OF CONTENTS

Specifications .....
Service procedures....
Exploded view Model TX-902..
Parts list Model TX~902 .........
Exploded view Model TX ~900
Pans list Model TX-900
Block diagram Model TX-902
Block diagram Model TX-900
IC block diagram and descriptions.
Packing View ..............................

Adjustment procedures ............................................................... 20
Printed circuit board view from bottom side .................................. 23
Schematic diagram

Model TX~902...
Model TX-900.
Printed circuit board-parts 1151
Model TX-902 .,
Model TX-900 ..