Marantz-SA8003-sacd-mz08078 电路图 维修手册.pdf

100 Corporate Drive Mahwah, NJ 07430 Service Bulletin No. : MZ08-078 Date: December 29, 2008 _ Model: SA8003 Subject: Improvement of analog output oscillation Symptom: When the unit is connected to a PM7003, PM8003 or PM-11S2 with a special low-capacity RCA cable and only when the unit is in low temperature conditions, beat noise may occur during playback. Solution: In order to prevent oscillation, a capacitor must be inserted between the base and collector of transistors in the diamond buffer input stage so as to drastically reduce the peak of the gain frequency characteristics. Modify the POS. NO. PA16 AUDIO PWB as follows: 1. Install a 47pF ceramic capacitor between the base and collector each of Q609 and Q709. 2. Put in a rubber sheet by the base and collector each of Q609 and Q709. 3. *Bond the rubber sheets and ceramic capacitors. (Two points each.) _ CONFIDENTIALITY NOTICE: The information contained in this document is intended for the exclusive use by MARANTZ 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 MARANTZ Service Agreement. Any distribution, disclosure, dissemination or copying of this document and the information it contains is prohibited. No responsibility will be accepted by MARANTZ for any damage, injury or loss resulting from the misuse of the information contained in this document. RadioFans.CN 收音机爱 好者资料库 For further details of the modification procedure, please refer to the “SA7003/SA8003 AUDIO PWB Modification Procedure”. Parts: Qty Description Part Number 2 pcs 47pF ceramic capacitor 00MDA15470110 2 pcs Rubber sheet 00D4610415007 NA BOND SC608LVZ BOND (SC608LVZ Sony Chemical Corp. Self-extinguishing adhesive) or the equivalent. See Sony bond technical tip for equivalent bond. SA8003 AUDIO PWB Modification Procedure _ CONFIDENTIALITY NOTICE: The information contained in this document is intended for the exclusive use by MARANTZ 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 MARANTZ Service Agreement. Any distribution, disclosure, dissemination or copying of this document and the information it contains is prohibited. No responsibility will be accepted by MARANTZ for any damage, injury or loss resulting from the misuse of the information contained in this document. RadioFans.CN 收音机爱 好者资料库 _ CONFIDENTIALITY NOTICE: The information contained in this document is intended for the exclusive use by MARANTZ 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 MARANTZ Service Agreement. Any distribution, disclosure, dissemination or copying of this document and the information it contains is prohibited. No responsibility will be accepted by MARANTZ for any damage, injury or loss resulting from the misuse of the information contained in this document. RadioFans.CN 收音机爱 好者资料库 _ CONFIDENTIALITY NOTICE: The information contained in this document is intended for the exclusive use by MARANTZ 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 MARANTZ Service Agreement. Any distribution, disclosure, dissemination or copying of this document and the information it contains is prohibited. No responsibility will be accepted by MARANTZ for any damage, injury or loss resulting from the misuse of the information contained in this document. SA8003 Anti-oscillation modification points (Analog output circuit) Serial Number Range: Applicable up to “C10008xx000300” From “C10008xx000301” already modified in production. _ CONFIDENTIALITY NOTICE: The information contained in this document is intended for the exclusive use by MARANTZ 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 MARANTZ Service Agreement. Any distribution, disclosure, dissemination or copying of this document and the information it contains is prohibited. No responsibility will be accepted by MARANTZ for any damage, injury or loss resulting from the misuse of the information contained in this document.