Denon AVR-2105, AVR-885 Service Bulletin

100 Corporate Drive Mahwah, NJ 07430

Service Bulletin

No. : OST-F935b
Date:

May 23, 2007

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Model: AVR-2105, AVR-885

Subject: The Power Amplifier Circuit breaks down during Playback.

Symptom: The Power Amplifier Circuit breaks down during Playback because

the operating time of the ASO protection circuit for the Power Transistor was too
long.

Solution:

• Modification Procedure:

1) Remove 9 screws.

2) Remove the TOP Cover (see the following for details)

Replace C175 220µF Capacitor with 22µF Capacitor.

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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:

______________________________________________________________________________________

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) Remove 2 screws on MAIN P.W.B.

4) Remove the PRE P.W.B.

______________________________________________________________________________________

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.