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

《Marantz-SA8003-sacd-mz08078 电路图 维修手册.pdf》由会员分享，可在线阅读，更多相关《Marantz-SA8003-sacd-mz08078 电路图 维修手册.pdf（5页珍藏版）》请在收音机爱好者资料库上搜索。

1、 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 te

2、mperature 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 P

3、OS. 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 i

4、nformation 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 Agreem

5、ent. 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 Fo

6、r 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

7、 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 c

8、ontain 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

9、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 e

10、mployees. 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 prohibite

11、d. 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 Authorize

12、d 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 informa

13、tion 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 “C10008xx000

14、300” 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

15、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.