Denon DVD-5900 Service Bulletin OST-885

100 Corporate Drive Mahwah, NJ 07430

Service Bulletin

No. : OST-885
Date:

May 17, 2007

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Model: DVD-5900

Subject: Upgrading the unit for improving the compatibility with amplifiers of

other companies that are conformable to the IEEE1394 standard.
If the ROM rewriting work for IEEE1394 is done by this CD-ROM, it will work like
the DVD3910 without using PC for IEEE1394 upgrade from now on.

Symptom: The DVD-5900 is incapable of reproducing sound signals via the

IEEE1394 connection when it is connected to other company's amplifiers that are
conformable to the IEEE1394.

Solution:

customer's unit for improving compatibility with other manufacturer's models that
are conformable to the IEEE1394.

Caution:

After upgrading, the DVD-5900s is capable of playing back audio signals after
connecting other company's amplifiers that are conformable to the IEEE1394.
However, please keep in mind that it does not guarantee the complete
compatibility in performance, function and the quality.

Note: When performing the upgrade, it is necessary to have a Personal
Computer, Check Jig (Amplifier conformable to the IEEE1394) and others that
are exclusively used for upgrading.

Upon claim please apply the following modification to your

______________________________________________________________________________________

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:

• Modification Procedures:

1) Remove the Top Cover.

2) Turn on the Power of the unit. When "0h 00m 00s" appeared on the display of
the unit, press "FF SKIP", "PLAY" and "OPEN/CLOSE" buttons simultaneously
to start the initialization.

• Please be sure to perform this initialization. When the initialization was
performed, indications of "INITIALIZE" appear on the TV Screen and the Display
of the Main Unit. Please confirm that the LED of the IEEE1394 on the Main Unit
is turned off at this time.

3) Use the supplied Personal Computer for upgrading the ROM for IEEE1394
and rewrite the CD-R (1394 firmware: ER1028). Then, turn off the Power of the
unit. (Refer to the attached sheet-2)

4) Remove the FB448 CHIP EMIFIL (11A121) on the GU-3513-1 AUDIO UNIT.
(Refer to the attached sheet-3)

5) Solder one side of the 1P WIRE (AWG 28-1007, 001 0233 045) to the Pin #99
of IC402 and solder the other end of the wire to the FB448 (CX251 side). (Refer
to the attached sheet-3)

6) Use the supplied Personal Computer for upgrading the unit to IEEE1394, and
perform the rewriting operation of the PLD (IC404). (Refer to the attached sheet-

4)

7) Close the Top Cover.

8) Use the supplied CD-R for rewriting the System MICON and perform the
rewriting operation of the System MICON. (Refer to the attached sheet-5)

9) Use supplied CD-R for rewriting the Back-end ROM, and rewrite the Back-end
ROM. (Refer to the attached sheet-5)

10) Confirming of the Version:
Turn off the Power of the unit once. While holding the "PLAY" and
"OPEN/CLOSE" buttons down simultaneously, turn on the Power of the Unit.
When " >|| " mark is indicated on the FL Display, the following versions are
indicated by turns every time the "PUSH/ENTER" button on the unit is pressed.
Confirm the versions.

• Versions: ESS 6334-G, MAKE DAY 105, and DRV 030825 SYSTEM 6542-5

11) Use the Check Jig (Amplifier conformable to IEEE1394) and confirm the
playback sound. (Refer to the attached sheet-6)
(a) Connect DVD-5900 or DVD-A11 with the Check Jig (Amplifier conformable to
IEEE1394: VSA-AX5i) and the TV Monitor.
(b) Turn on the Power of the Check Jig and the TV Monitor.
(c) Turn on the Power of the DVD-5900 and set the unit to the IEEE1394 mode.
(d) Turn the MULTI-JOG of the Check Jig, and confirm that "DVD-5900" is
indicated on the FL Display of the Jig.
(e) Confirm the playback sound by means of general SACD, CD-DA, DVD-Video
and DVD Audio discs.

______________________________________________________________________________________

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: