Service Manual
Published by Onkyo & Pioneer Corporation Grobal CS Department
SAFETY-RELATED COMPONENT WARNING!! :
COMPONENTS IDENTIFIED BY MARK ON THE SCHEMATIC DIAGRAM AND IN THE PARTS LIST ARE CRITICAL FOR RISK OF FIRE
AND ELECTRIC SHOCK. REPLACE THESE COMPONENTS WITH ONKYO PARTS WHOSE PART NUMBERS APPEAR AS SHOWN IN
THIS MANUAL. MAKE LEAKAGE-CURRENT OR RESISTANCE MESUREMENTS TO DETERMINE THAT EXPOSED PARTS ARE
ACCEPTABLY INSULATED FROM THE SUPPLY CIRCUIT BEFORE RETURNING THE APPLIANCE TO THE CUSTOMER.
This service manual is intended for qualified service technicians; it is not meant for the casual do-it-yourselfer. Qualified technicians have the
necessary test equipment and tools, and have been trained to properly and safely repair complex products such as those covered by this
manual.
Improperly performed repairs can adversely affect the safety and reliability of the product and may void the warranty. If you are not qualified to
perform the repair of this product properly and safely, you should not risk trying to do so and refer the repair to a qualified service technician.
Caution:
If Main or Primary fuse enters in the Neutral line of AC Mains supply or if there is possibility of Main or Primary Fuse entering in the Neutral
line of AC Mains supply, then AC Mains supply must be disconnected to de-energize the circuit.
Ref.No. : 4650
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Pre Issue (2017-Apr)
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Final Issue (2017-Jul)
TX-RZ720
AV RECEIVER
Title Page
CONTENTS
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Amp Diag Mode after Abnormal Conditions
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Trouble Shoot
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Disassembly
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MUSIC OPTIMIZER button/indicator (North American models)
PURE AUDIO button/indicator (European, Australian and Asian models)
