Denon DVD-5910 Service Bulletin OST-F943

100 Corporate Drive Mahwah, NJ 07430

Service Bulletin

No. : OST-F943
Date: June 19, 2007

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Model: DVD-5910

Subject: Countermeasure for the malfunctions that is related to the software

such as malfunction upon playback of particular DVD Video Discs.

Symptom: 1) The unit generates block noise during the playback of particular

DVD Video Disc "Tora-san's Shattered Japanese Romance".

2) The output sound turns into noise when playing back the particular chapter on
a particular DVD Video Disc. (The chapter 7, title 2 of Neujahrskonzert New
year's concert 2005, wiener philharmoniker lorin maazel)"

3) If the "ON" and "OFF" of the Hot Plug was performed repeatedly and
continuously after switching the function by using AVR-4806, the output signal of
the HDMI is not outputted. (The phenomenon may occur once in approximately
30 minutes.)

Solution: The software has been corrected so no malfunction occ urs.

MODIFICATION: (Upon refurbishment of the unit and/or claim.) We will supply
the following program files for updating the Back-end. Therefore, please record
the file on a blank CD-R separately and individually, and update the Back-end on
the above models upon refurbishment of the unit and/or claim.

Note: By rewriting the Back-end, the version of the DRV will be changed to
"030825".

Caution:

• When recording the file(s) on a blank CD-R, the format shall be "ISO9660" and
the session shall be "CLOSE".

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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:

• When recording the program file on the CD-R, please record it at the 4-times
speed of the normal speed.

• When the 4-times speed is not available, please record it at the minimum speed
that is available in your machine.

• If the file was recorded at a high speed, such as 32 or 48 times speed of the
normal speed, the upgrading may fail due to the data incorrectly recorded on the
CD-R.

Supplied Program files:

1) DVD-A1XV and DVD-5910 equipped with the 2nd Edition of DENON Link:

• Name of the File: d51zsavd.cfw

• Version: 6780-6/MAKE DAY609

2) DVD-A1XV and DVD-5910 equipped with the 3rd Edition of DENON Link:

• Name of the File: d51zsavd.cfw

• Version: 6780-6/MAKE DAY609D

Note:

The contents of the program files differ though their names are the same.
Therefore, please do not apply the above program file for the 3rd Edition DENON
Link to the unit equipped with the 2nd Edition, or the above program file for the
2nd Edition of DENON Link to the unit equipped with the 3rd Edition. If you
rewrote the unit by mistakes, rewrite the unit again by means of the correct
program file.

2) Adjust the cursor to the item of DENON Link in the DIGITAL INTERFACE
SETUP.

3) If the items of the DENON Link are "OFF" and "2nd" only, the unit is
conforming to the 2nd Edition of the DENON Link. If the items are "OFF", "2nd"
and "3rd", then the unit is conforming to the 3rd Edition.

Updating the System MICON and the Back-end ROM:

Updating the System MICON:
(1) Switch the Power of the unit on. Press the "OPEN/CLOSE" button and open
the Disc Tray.
(2) Put the CD-R (Ver.6867-2) for rewriting the System MICON on the Disc Tray
and press the "OPEN/CLOSE" button.

• The Disc Tray closes and the update of the software is performed automatically.

• After indicating "LOADING" on the FL Display, the Power of the unit is switched
off once, and is switched on again.

• After "WRITING" is indicated on the FL Display, "COMPLETE" is indicated.

______________________________________________________________________________________

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: