DENON Service Bulletin OST-615 free download

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100 Corporate Drive Mahwah, NJ 07430 Service Bulletin No. : OST-615 Date: January 23, 2007 _____________________________________________________________ Model: AVR-3300 Subject: The cooling fan is noisy. Symptom: The customer complains the cooling fan is too noisy. Solution: Lower the voltage to the Cooling Fan. Apply the following modification to the Regulator Unit (1U-3201-1): 1) Remove the Jumper-wire JV23 from the P.W.B. and replace it with an 82, 1W resistor. 2) Replace diode ZD901 (MTZ12A) with an MTZJ9.1CT77 style diode. Parts: Ref# Description Part Number JV23 RS14B3A820JNBST(S) 244 2055 983 ZD901 MTZJ9.1CT77 276 0635 917 ______________________________________________________________________________________ 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.