Denon AVR-991 Service Manual

100 Corporate Drive Mahwah, NJ 07430

Service Bulletin

No. : DZ10-121
Date:

August 30, 2010

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Model: AVR-3311CI, AVR-991

Subject: Correction of the Firmware via DPMS (D&M Product Management

Server).

Countermeasure is applicable only upon claim from the customer.

Symptom: AVRxx11 Series Receivers in combination with Control4

Installations, after a power failure, the AVRxx11 models do not reconnect.

Solution:

Updating the firmware (Refer to the Instruction Manual.)

1) Turn the Power Supply of the unit off.

2) Connect the Ethernet terminal of the unit to the Network line by Ethernet
straight cable. (Don't use Ethernet cross cable.)

3) The connection of the network recommends the Ethernet cable for certain
update.

4) Turn the Power Supply of the unit on.

5) The unit sets the Internet. Wait for about two minutes until customer's router
ends the set up.

Caution: 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.

6) Press "MENU" button on the front panel and indicates the GUI menu.

We corrected the firmware so that no malfunction occurs.

______________________________________________________________________________________

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:

7) Press "CURSOR" button.

8) The GUI indicates, "MANUAL SETUP" > "OPTION SETUP" > "Firmware
Update".

Caution: The update interrupts when it is not possible to connect it with the

Internet correctly. In this case, please do from 1) again.

______________________________________________________________________________________

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:

9) Select "Start" on GUI.

10) Press the "ENTER" button.

11) The firmware will start updating.

Caution: when the firmware update starts correctly, the GUI and the audio

signal, etc. everything stops, and becomes the update operation.

12) The GUI display disappears, and becomes only FL display.

13) During the updating, the FL Display indicates the procedure of update the
firmware. Time necessary for update:

approximately 7 min.

Caution: The update time might change depending on the situation of the DPMS

server and the speed of the Internet environment of the customer house.

14) After upgrading, the FL Display indicates below.

______________________________________________________________________________________

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: