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How to reset microprocessor

How do I reset the microprocessor on my DRA 397. Power surge the other day now have sound but display screen will only stay lit for a few sec. Also my VAUX (where I watch my cable from is not an "option" from my selector knob

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  • 137 Answers

TURN OFF MAIN POWER HOLD DOWN SPEAKER A AND B BUTTONS WHILE TURNING ON MAIN POWER ,DISPLAY WILL BLINK A FEW TIMES THEN RELEASE SPEAKER BUTTONS.

Posted on Apr 14, 2010

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Denon DRA-397 zone 2


zone 2 is just for an extra set of speakers in another location, your sub is not attatched to that zone

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Let's understand this - you have an external volume control wired in series with each front speaker set?

Can you elaborate on their electrical characteristics?

http://www.retrevo.com/support/Denon-DRA-397-Receivers-manual/id/696dj087/t/2/

Page 24.

A + B 8 - 16 ohms

Jan 22, 2011 | Denon DRA-397

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Refer to the "Initialization of the Microprocessor" section of the manual (page 16 of the PDF version of the manual).
1) Turn the unit OFF using the On/Off switch (not the standby switch).
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Jan 23, 2010 | Denon DRA-37

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me too did you ever get it fixed

Dec 16, 2008 | Denon DRA-397

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Hi, Press the B and the Mode buttons and then hit the power button.  This should unlock the panel....it worked for me.

Apr 12, 2008 | Denon DRA-397

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Remote lock on


This worked for me, but I'm sure tired of constantly searching for ways to fix the problems I encounter with my Denon DRA-397. When it works, it's great, but I don't have a degree in electrical engineering. Why can't they produce a user friendly trouble shooting guide?

Dec 14, 2007 | Denon DRA-397

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Speaker B and Mode buttons held down simultaneously while engaging master power, unlocked my DRA-397. Thanks!!!!

Dec 02, 2007 | Denon DRA-397

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