Denon AVR-3310CI, AVR-990 Service Bulletin

100 Corporate Drive Mahwah, NJ 07430

Service Bulletin

No. : OST-F1548 Date: August 4, 2009

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Model: AVR-3310CI, AVR-990

Subject: Correction of the Firmware via DPMS (Denon Product Management

Server).

Countermeasure is applicable only upon claim from the customer.

Symptom: 1) The noise might be generated in the picture in the environment

of low temperature (about -10 degree Celsius/14 degree Fahrenheit).

2) The signal is input to Analog in the STEREO mode. The noise occurs from the Subwoofer output when Volume is adjusted to +10dB or more.

Solution: We corrected the firmware so that no malfunction occurs.

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. It wishes waiting for about two minutes until customer's router ends the setting.

Caution: The update doesn't succeed when the customers set cannot hook up to the Internet correctly. In this case, please confirm the internet environment of the customer house. If the customer can receive Internet radio or if the Internet can be connected this can be used to determine the internet connection status. 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.

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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 redo again from step 1).

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CONFIDENTIALITY NOTICE:

9) Select the "Start" on GUI.

10) Press the "ENTER" button.

11) The firmware will start updating.

Caution: When the firmware update starts correctly, the GUI, the audio signal,

etc. stops and everything 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.

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CONFIDENTIALITY NOTICE:

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