一款蓝牙车载免提故障的维修--免提喇叭无声的故障的维修

摘要

It describes a bluetooth hands-free fault repair.Some circuit of the bluetooth bluetooth is mainly used CSR bluetooth chip, the circuit of the echo processing is mainly used Fortemedia's FM1073. This paper mainly describes the basic principle of the hands-free as well as a silent fault repairs.%主要描述了一款蓝牙车载免提的故障维修。该蓝牙车载蓝牙部分电路主要使用了CSR蓝牙芯片，回音处理部分电路主要使用了Fortemedia公司的FM1073.主要描述了该免提的基本原理以及一种无声的故障的修理。