Onkyo TX-7230 Service Manual

Silver and b:
SAFETY-RELATED COMPONENT WARNING!!
COMPONENTS IDENTIFIED BY MARK Z\ 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 PARTS
NUMBERS APPEAR AS SHOWN IN THIS MANUAL.
MAKE LEAKAGE-CURRENT OR RESISTANCE
MEASUREMENTS TO DETERMINE THAT EX-
POSED PARTS ARE ACCEPTABLY INSULATED
FROM THE SUPPLY CIRCUIT BEFORE RETURN.
ING THE APPLIANCE TO THE CUSTOMER.
i
mocels
TABLE OF CONTENTS
Spectiications . 00 ce ee oe 2
Service procédures... 2s ee poe ee 3
Biock diagrani
Amplifier section. «2. ee eee 4
Power supply section. 2... 0. ee 4
Dynaznic bass ciretitusc0.. oo oe oe 4
Pune? section) oe ee 5
Exploded view. 2.22 ee ee 6
Paris list. 0 ee ee, Gy ees 7
Circuit description. oe ee oe 8
Adjustment procedures... 65. oe 13
Pcb view/list
Tuner section 2 0. ee ee ee, 15
Digital section. 6. ee bye ee 17
Aimplifier section... oe 21
Control section... ee ee 25
Senematic diagram
Jumer section 3. 2k eee oe 19
AMD, section 4. lee ee ee, 2.
Block diaprani of 1Co 0 ee, head
Packing View. 2. 0 See ee ee. 2