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100 Corporate Drive Mahwah, NJ 07430

Service Bulletin
No. : OST-F1507
Date: May 20, 2009
_____________________________________________________________

Model: TU-604CI

Subject: Correction of the Firmware via DPMS
Countermeasure is applicable only upon claim from the customer.

Symptom: Improvement according to function of AVR amplifier.
1) Remote maintenance cannot be turned on by pushing about the button
simultaneously.
2) The display of the FL tube of the Access Port setting is wrong.
3) It is not equipped with the installer lock function. (In the WEB control.)
4) When the installer is locked, the unit accepts the Setup. (by button on the unit
or Remote control)
5) The setting of Remote Lock can be operated from Menu.
6) There is no remote control code of the remote maintenance beginning and the
end.
7) The Panel Lock function can be selected only with the Menu button and on/off
of the AC power supply.

Correction of the following display at FM, AM, HD Radio and DAB.
1) The STEREO logo lights when the HD Radio is received.
2) The RDS logo lights when DAB is received.
3) When Status of SETUP is confirmed, Information, Channel, and the
Frequency are not correct and after the unit is factory initialized.
4) When RDS is not received, the PTY logo is displayed in FL Display.

Solution:
COUNTERMEASURE: Update the firmware via DPMS (Denon Product
Management Server) so that no malfunction occurs.

______________________________________________________________________________________
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.
Updating the firmware
1) Connect the Ethernet terminal of the unit to the Network line by Ethernet
straight cable.
2) Turn on the power of the unit.
3) Push the SETUP button on the unit.
4) Select the "Option Setup" function by "SELECT/ENTER" knob, and push the
"SELECT/ENTER" knob.
5) Select the "Firmware Update" function by "SELECT/ENTER" knob, and push
the "SELECT/ENTER" knob.
6) Select the "Start" function by "SELECT/ENTER" knob, and push the
"SELECT/ENTER" knob.
7) Select the "Yes" function by "SELECT/ENTER" knob, and push the
"SELECT/ENTER" knob.
8) When updating starts, the power indicator lights red.
9) "Updating ***" is shown on the display during updating.
10) Once updating is completed, "MULTIPLE TUNER" is displayed on FL
Display.

Caution:
1) Connection to the network and specific settings are required to update the
firmware. For details, see page 11, 17and 18 of the Instruction manual.
2) Do not turn off the power until updating is completed.
3) Normally there is no need to use this function, aside from the cases described
below.
4) The Firmware Update function is only used for updating the firmware (free or
for a charge) via the Internet, for example for the purpose of adding functions to
the TU-604CI in the future.
5) Information regarding the Firmware Update function will be announced on the
DENON web site each time related plans are defined.
6) A broadband connection to the Internet is required to use this function (refer to
page 11 of the Instruction manual.).
7) Even with a broadband connection to the Internet, approximately 8~12 min is
required for the updating procedure to be completed. Once updating starts,
normal operations on the TU-604CI cannot be performed until updating is
completed.
8) Furthermore, updating the firmware may reset the backup data for the
parameters, etc., set for the TU-604CI.

______________________________________________________________________________________
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.
Note: The update doesn't succeed when the customer's set cannot connect to
the Internet correctly. In this case, please confirm the internet environment in the
customer's house. Whether the set is able to receive Internet radio correctly or
not can be used to determine whether the Internet is properly connected. There
are some problems under the internet environment when the Internet radio can
not be received.

Cautions during the updating operation:
1) Please do not turn off the setting of "DHCP" when you update the unit.
(Initialization is turning on.) Please execute it under the guidance of the IT staff
with computer skills when the setting of "DHCP" is unavoidably turned off by
limiting the electronic environment, and you set IP Address, the subnet mask, the
default gateway, and DNS, etc. for myself. When it makes a mistake in the
setting with "DHCP" turned off, the unit might not operate, and the unit be
damaged in the worst situation. Please do not touch the setting of "DHCP"
except in special circumstances.
2) When the customer use "Netgear router 614 Series" for updating, "uPnP"
have to deactivate in the router.

______________________________________________________________________________________
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.
3) If the Display has kept indicating fixed during the updating operation, wait
longer than total updating time. Then, turn off the Power of the unit and start the
updating operation from the beginning again.

Confirming the latest firmware:
1) Connect the Ethernet terminal of the unit to the Network line by Ethernet
straight cable.
2) Turn on the power of unit.
3) Push the SETUP button of the unit.
4) Select the "Option Setup" function by "SELECT/ENTER" knob, and push the
"SELECT/ENTER" knob.
5) Select the "Firmware Update" function by "SELECT/ENTER" knob, and push
the "SELECT/ENTER" knob.
6) Select the "Start" function by "SELECT/ENTER" knob, and push the
"SELECT/ENTER" knob.
7) Select the "Yes" function by "SELECT/ENTER" knob, and push the
"SELECT/ENTER" knob.
8) When updating starts, the power indicator lights red.
9) "Updating ***" is shown on the display during updating.
10) "Update: Latest" is displayed when the firmware is the latest version.

______________________________________________________________________________________
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.
Confirming the version of firmware:
1) Connect the Ethernet terminal of the unit to the Network line by Ethernet
straight cable.
2) Turn on the power of unit.
3) When TUNER LED of the number in which Option board has been inserted
has been turned off, the "TUNER" button is pushed, and TUNER LED is lighted.
4) The "SELECT/ENTER" knob is pushed for three seconds or more while
pushing the "MODE" button and the "TUNER 1" button of the unit simultaneously.
5) Please confirm "Ver. Check" displays it in the second line of the FL display.
The "SELECT/ENTER" knob is turned when "Ver. Check" is not displayed in FL
Display, and "Ver. Check" is displayed in FL Display.
6) The "SELECT/ENTER" knob is pushed with "Ver. Check" displayed.
7) When the "SELECT/ENTER" knob is turned, the version of Firmware is
displayed. However Serial Number of TU-604CI is not displayed.

Serial Number Range:
All models

______________________________________________________________________________________
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.