Marantz MODEL 40n Stereo 140W Integrated Amplifier (Black) User Manual
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The power turns off and the protection circuit indicator shows one long blink and four short blinks in orange.
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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
sufficiently, and then turn the power on again.
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Please re-install this unit in a place having good ventilation.
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Check the speaker connections. The protection circuit may have been activated because speaker cable core wires came in contact with each other or a
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. (
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Stop playback on the playback device, and then turn the power off and on again.
The power turns off and the protection circuit indicator shows one long blink and five short blinks in orange.
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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
contact our customer service center.
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