Service Manuals, User Guides, Schematic Diagrams or docs for : DENON AV Surround Receiver & Amplifier AV Surround Receiver & Amplifier Denon - AVR-4806 & AVC-A11XV Service Bulletin OST-F969

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                                  100 Corporate Drive Mahwah, NJ 07430



                                                                                       Service Bulletin
                                         No. : OST-F969
                                         Date: February 20, 2007
_____________________________________________________________

Model:               AVR-4806


Subject:             Countermeasure to improve unstable operations in the Auto Set-up
function.


Symptom: The following points have to be improved:
1) Accurately identify the type of speaker (large or small).
2) The accuracy of the low frequency compensation curve of the Room
Equalizer.
3) To accurately judge the speaker's polarity.
4) The ability to accurately measure the distance of all the speakers.


Solution: The Firmware has been improved.

MODIFICATION: (Only use upon customer claim)
Please install the Writer Software to your PC and update your customer's unit, by
means of the Writer Software.

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