NAD-319-int-sh39815 电路图 维修手册.pdf

《NAD-319-int-sh39815 电路图 维修手册.pdf》由会员分享，可在线阅读，更多相关《NAD-319-int-sh39815 电路图 维修手册.pdf（1页珍藏版）》请在收音机爱好者资料库上搜索。

1、NAD 319 SERVICE HINT PROBLEM: It takes a long time to get out of protection, occasionally you will hear a plop, units goes into protection. These complaints can be only now and than. Unit can play without any problem for a long time. CAUSE: The + and/or - 24V is interupted by a voltage regulator ( I

2、C651 / IC652 ) which locks up due to a too high supply voltage. SOLUTION: One (or more) zener diodes which reduce the supply voltage to the regulator ICs is defective. These zeners, D657 to D660 can be replaced by it=s original type. Make sure you mount them standing off from the PCB. Check also the regulator for correct output voltage. PRODUCTION: PAGE 3-98-15 RadioFans.CN 收音机爱 好者资料库