Denon DVD-9000 Service Bulletin OST-803

100 Corporate Drive Mahwah, NJ 07430

Service Bulletin

No. : OST-803
Date:

May 8, 2007

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Model: DVD-9000

Subject: 1) Countermeasure for sound interruption during the playback of a

particular disc.

2) Countermeasure for the Chroma Delay at the Progressive Output.

Symptom: 1) Sound interruption: Upon playing back Queen's "The Game"

(DVD Audio), if the playback continued up to Track #4 after selecting Stereo in
the MENU, the sound interruption occurs in approximately 12 minutes and 20
seconds.

2) Chroma Delay: On the Progressive Output image, the C (color difference)
signal has delayed against the Y (intensity) signal and the color is blurred.

Solution:

improved.

2) Chroma Delay: Changed the circuit and the software so that blurred color
does not occur.

1) Sound interruption: The ESS MICON program file has been

Modification:

1) Hardware (Circuit):
Replace the LP Filters with ones whose group delay time has been improved,
and replace the transistors with ones whose high frequency characteristics is
sufficient.

• P. W. Board: GU-3390-2 (Please disassemble and assemble the unit according
to the Service Manual (S-1107 or X-0136)).

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The information contained in this document is intended for the exclusive use by DENON Authorized Service Centers and their
employees. This document may contain information that is privileged, confidential and may be protected from disclosure under
applicable laws and terms of the DENON Service Agreement. Any distribution, disclosure, dissemination or copying of this
document and the information it contains is prohibited. No responsibility will be accepted by DENON for any damage, injury or loss
resulting from the misuse of the information contained in this document.

CONFIDENTIALITY NOTICE:

(1) Replacement of the Filters:

(2) Replacement of transistors:

• After the modification, please check if the progressive image can be outputted
properly.

2) Software: We increased the speed of Y signal by means of software since the
Y signal's delay increases due to the change in hardware.

• Creating the Disc for rewriting: Please record the following four ESS Program
Files on one Disc for rewriting.

Note: When recording the disc, the format shall be "ISO9660", and the session
shall be "CLOSE".

• Rewriting Procedures of the ESS MICON:

1) Turn on the Power of the unit, open the Loader and place the CD-R Disc for
rewriting on the Loader.

2) Press "OPEN/CLOSE" button.

3) The following indications appear on the FL Display, and the Loader opens
automatically. Take out the Disc from the Loader. "CLOSE"Æ"LOADING"
Æ"WRITING"Æ"COMPLETE"

4) Turn off the Power of the unit once. While holding the "PLAY" and
"OPEN/CLOSE" buttons on the unit down simultaneously, turn on the Power.

______________________________________________________________________________________

CONFIDENTIALITY NOTICE:

The information contained in this document is intended for the exclusive use by DENON Authorized Service Centers and their
employees. This document may contain information that is privileged, confidential and may be protected from disclosure under
applicable laws and terms of the DENON Service Agreement. Any distribution, disclosure, dissemination or copying of this
document and the information it contains is prohibited. No responsibility will be accepted by DENON for any damage, injury or loss
resulting from the misuse of the information contained in this document.