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TROUBLESHOOTING
Be sure to investigate thoroughly before requesting repairs or after service. If it cannot be corrected, or if the problem is not
listed in the SYMPTOM column, disconnect the power cord and connect your authorized YAMAHA dealer or service center.
Notes
Sometimes the system may cease to recognize operations due to a mistaken operation or as a result of strong external noise (such as
irregular voltage due to shock of impact, excessive static electricity, or lightning strike). If this happens, first disconnect the power cord,
wait about 30 seconds, re-connect the power cord, and try the desired operation again.
When requesting repairs or after service, be sure to bring along with the AV-S70 (sold separately).
SYMPTOM CHECK Refer to page
No sound output at all. Is the AC power supply cord connected?
Has the AV-S70’s audio temporarily been lowered? Refer to the owner‘s
manual for the AV-S70 (sold separately).
Is the input source to the AV-S70 correctly? Refer to the owner‘s manual
for the AV-S70 (sold separately).
No sound output from
subwoofer.
Is the system connector cable connected correctly?
Is the subwoofer level of the AV-S70 set too low? Refer to the owner’s
manual for the AV-S70 (sold separately).
No sound output from rear
speakers.
Are the speaker cords connected correctly?
Is the rear speaker level of the AV-S70 set too low for the test tone? Refer
to the owners manual for the AV-S70 (sold separately).
Has VIRTUAL SURROUND been selected as the DSP program on the
AV-S70? Refer to the owners manual for the AV-S70 (sold separately).
Is DOLBY PRO LOGIC or DOLBY PRO LOGIC ENHANCED being
used as the DSP program with a monaural source? Refer to the owners
manual for the AV-S70 (sold separately).
A “humming” noise is present. Hum caused by external electromagnetic waves may be generated.
Try inverting the right-left polarity of the power cord and re-insert into
the AC outlet.
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5, 6
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0102NX-SW70_01_EN 3/29/0, 10:21 AM8
10


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