Denon S-302 Service Bulletin

100 Corporate Drive Mahwah, NJ 07430

Service Bulletin

No. : OST-F1272
Date: February 12, 2008

_____________________________________________________________

Model: S-302

Subject: A power supply malfunction occurs due to bugs in the MICON

software.

Symptom: When several hours pass after power supply OFF, the power

supply of the unit cannot be operated by remote control. The unit malfunctions
because of Infra-red interference from a plasma TV.

Solution: We corrected the firmware so that the malfunction does not occur.

Modification: Record each new firmware separately onto a blank CD-R together

with the dummy file (adummy.zip) and update your customer's unit.
Program Files:

Cautions:

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

• When recording the 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.

______________________________________________________________________________________

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:

Procedure to update the Firmware:

(1) Turn the Power of the unit on, and open the Disc Tray.
(2) Put the Disc of "SYSTEM" for updating the firmware onto the Tray and close
the Tray.
(3) The update starts automatically. After completion of the update, the Tray
opens automatically. Take out the Disc from the Tray.
(4) Under the above condition, the unit will not accept any buttons operation.
Therefore, unplug the AC Power Cord from the AC outlet once. Then, initialize
the unit.

Caution!: During the rewriting operation, do not turn off the Power Supply of the

unit and do not switch functions on the unit, by any means.

Initialization Procedures:

(1) Press the "ON/STANDBY" switch to set the standby mode, and then unplug
the set’s power supply cord from the wall power outlet.
(2) Hold the following: "Skip |<<" and "FUNCTION" buttons, after 30 seconds of
holding the buttons in plug the power supply cord into the outlet.
(3) Check that the "INITIALIZE" is flashing with an interval of about 1 second,
and release your fingers from the 2 buttons. The micro processor will be
initialized.

Confirmation of the Version of Firmware:

(1) During the STANDBY mode, while holding the "FUNCTION" and "SKIP +"
buttons on the unit down simultaneously, press "ON/STANDBY" button.
(2) Press "STATUS" button on the back of the Remote Control, so that each
version appears on the display.
(3) Confirm that the "SYSTEM", "DSP" and "SUB" Version is displayed as
follows.

Serial Number Range:

We have applied the above modification to the production models beginning from
the following serial numbers. (Last 5 digits)

02503 ~

______________________________________________________________________________________

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: