Onkyo TX 904 Service Manual
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Extracted text from Onkyo TX 904 Service Manual (Ocr-read)
Page 1
ONKYO SERVICE MANUAL
TX~904/ 906
Ref. No. OM3399
QUARTZ SYNTHESIZED
TUNER AMPLIFIER
MODEL TX-904
MODEL TX-906
Black model
BHUD. BHUI)N. BHUDC
120V AC. (fllH7
BHUP
230V AC. SUHZ
BHUW
l2ll/ZZUV AC SO/GOHZ
BIIUQA
240V AC Slle
SAFETY-RELATED COMPONENT WARNING
COMPONENTS INDENTIFIED RV MARK A().\
THE SCHEMATIC DIAGRAM AND IN IIII:
PARTS LIST ARE CRITICAL FOR RISK ()l FIRIE
AND ELECTRIC SHOCK, REPLACI: 'IIII'SI:
COMPONENTS WITH ONKYO PARTS WHOSE
PART NUMBERS APPEAR AS SHOWN IN THIS
MANUAL,
MAKE LEAKAGE-CURRENT ()R RFSISTANCI"
MEASUREMENTS TO DETERMINE 'l HAT
EXPOSED PARTS ARE ACCEPTABLY
INSULATED FROM THE SUPPLY ('IRCUI'I'
BEFORE RETURNING THL APPLIANCE. 'I()
THE CUSTOMER
l ONKYot
l
l mum cumpnutms ,
-1H
TABLE OF CONTENTS
Specifications..
Exploded View Model TX-906,
Model TX-904
Model TX-906
Model TX-904 ......................
Block diagram Tuner section 120V model.
ax:-
Parts list
Other modelsm...
Model "IX-906.
Model TX-904.
Amplifier section
Mosooqm
Microprocessor descriptions
Connection diagram .....................................................
Terminal description .................
1C block diagrams and descriptions
Adjustment procedures ................
Printed circuit board views t
Schematic diagram ,,
Model "TX-906 120V model ..........................
Other models
120V model
Other models .......................................
Model TXu904
Printed circuit board
Model TX-904 ..
Service procedures,..
Packing procednrcs ........................................................... 74