Denon DVD-550, DVD-755, DVD-1710, DVD-1910 Service Bulletin

100 Corporate Drive Mahwah, NJ 07430

Service Bulletin

No. : OST-841
Date:

May 23, 2007

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Model: DVD-550, DVD-755, DVD-1710, DVD-1910

Subject: Countermeasure for improving a Digital Output malfunction.

Symptom: The referenced models have been designed based on the

specification that the Dolby signal is output prior to other signals.

Solution:

is output prior to other signals.
MODIFICATION: (Upon Claim only) Record the following program files together

onto one blank CD-R disc and create a CD-R disc for upgrading. Then, please
refer to the updating procedures in the Service Manual and update your
customer's unit upon claim.

• The Versions number of the above subject models after updating are all "1.09".

• The File Names to be used for updating:

The microprocessor Firmware has been changed so the DTS signal

Serial Number Range:

DVD-555: 4057300001 ~ 4087307200
DVD-755: 4077300001 ~ 4087304100
DVD-1710: 4057300001 ~ 4087312200
DVD-1910: 4077300001 ~ 4087308497

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