Denon DVD-5910, DVD-5910C Service Bulletin OST-F1204

100 Corporate Drive Mahwah, NJ 07430

Service Bulletin

No. : OST-F1204
Date: August 9, 2007

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Model: DVD-5910, DVD-5910CI

Subject: Firmware Correction.
Symptom: The setting of HDMI AUDIO is set to NORMAL. The DVD player is

connected with AV AMP corresponding to "DD +", "DTS-HD", "OneBit Audio",
"MLP", "DST" and "WMA Pro" signal with HDMI. When the playback signal is
Dolby Digital or DTS, the audio signal becomes PCM.

Solution: The Back-end software has been improved so no malfunction

occurs.
MODIFICATION: Please record the update file onto a blank CD-R separately and
individually, and update the firmware in the Back-end on your customer's unit
upon refurbishment of the unit and/or claim.

Cautions:

• 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.

Parts:

Program files to be supplied this time:
"HOP-1200RN/S Laser Pickup"

(1) DVD-5910 equipped with the 2nd Edition of DENON Link:
Name of the File: d51zsavd.cfw
Version: GEN8278-3/MAKE DAY 801
(2) DVD-5910 equipped with the 3rd Edition of DENON Link:
Name of the File: d51zsavd.cfw
Version: GEN8278-3/MAKE DAY 801D
(3) DVD-5910CI equipped with the 3rd Edition of DENON Link:
Name of the File: d51zsavd.cfw
Version: GEN8279-3/MAKE DAY 801D

"HOP-1200W-B Laser Pickup"
(1) DVD-5910 equipped with the 2nd Edition of DENON Link:
Name of the File: d51zsavd.cfw
Version: GEN8255-3/MAKE DAY 801
(2) DVD-5910 equipped with the 3rd Edition of DENON Link:
Name of the File: d51zsavd.cfw
Version: GEN8255-3/MAKE DAY 801D
(3) DVD-5910CI equipped with the 3rd Edition of DENON Link:
Name of the File: d51zsavd.cfw
Version: GEN8256-3/MAKE DAY 801D

Caution: In the case of model DVD-3910/5910, the contents of the program files

differ though their names are the same. Therefore, please
program file for the 3rd Edition DENON Link to the unit that is equipped with the
2nd Edition, and the program file for the 2nd Edition of DENON Link to the unit
equipped with the 3rd Edition. If you rewrote the unit by mistake, rewrite the unit
again using the correct program file.

do not apply the

______________________________________________________________________________________

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: