Soundcraft-SerieS2-mix-mod 电路图 维修手册.pdf

《Soundcraft-SerieS2-mix-mod 电路图 维修手册.pdf》由会员分享，可在线阅读，更多相关《Soundcraft-SerieS2-mix-mod 电路图 维修手册.pdf（4页珍藏版）》请在收音机爱好者资料库上搜索。

1、CONCESSION Concession No: REQUEST (1) This section to be completed by the originator. Raised by: Andy Brown Date:05 06 2002 Department: Product Development Product name Series TWO Assy nos to be changed RG4020 Series TWO Master PCB DESCRIPTION (2) Please state clearly: A) Problem B) Suggested soluti

2、on. Title: Distorted crosstalk from Stereo Inputs Problem: There is a strange distorted crosstalk from stereo inputs onto unrouted ouptuts when signal level in stereo I/Ps 1 or 2 exceeds a certain level. The problem has been found to be caused by some sort of instability. Solution (include sketch wh

3、ere necessary): On SC4020 Master PCB: Add one 1nF capacitor (CC0238) from SS22 pin 3 (AGND) to pin 5 (+VC) See attached photos for exact position of switch and capacitor. Ensure capacitor leads do not short to other pins or pcb tracks. Technical bulletin required?Yes No X Date completed: Effective f

4、rom: to: Serial no: to: Apply changes to:Shipped productsYes WIPYes X Next prod batchYes X StockYes No X No No No X VETTING (3) R & D ManagerAcceptedYes No QA ManagerAcceptedYes No Authorisation: Authorisation: Reason for rejection: Reason for rejection: Production EngineerAcceptedYes No Operations ManagerAcceptedYes No Authorisation: Authorisation: Reason for rejection: Reason for rejection: ASSIGNMENT OF RESPONSIBILITY (4) Accepted Rejected Incorporated into ECN: Date: RadioFans.CN 收音机爱 好者资料库 RadioFans.CN 收音机爱 好者资料库 RadioFans.CN 收音机爱 好者资料库