Denon PMA-900HNE Owner's Manual page 76

Integrated network amplifier
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Contents
Connections
The power turns off and the protection circuit indicator shows one long blink and four short blinks in red.
The protection circuit has been activated due to a rise in temperature within this unit. Turn the power off, wait about an hour until this unit cools down
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sufficiently, and then turn the power on again.
Please re-install this unit in a place having good ventilation.
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Stop playback on the playback device, and then turn the power off and on again.
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The power turns off and the protection circuit indicator shows one long blink and five short blinks in red.
Check the speaker connections. The protection circuit may have been activated because speaker cable core wires came in contact with each other or a
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core wire was disconnected from the connector and came in contact with the rear panel of this unit. After unplugging the power cord, take corrective
action such as firmly re-twisting the core wire or taking care of the connector, and then reconnect the wire. (v p. 19)
Stop playback on the playback device, and then turn the power off and on again.
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If the problem is not solved by turning the power off and on again, this unit's amplifier circuit or power circuit has failed. Unplug the power cord and
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contact our customer service center.
Front panel
Rear panel
Playback
Settings
76
Remote control
unit
Tips
Index
Appendix

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