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一、不服务故障现象开机正常，编程及系统设置正常，不转服务好或信号弱。分析检修手机不服务可分为硬故障与软故障两大类，以硬故障常见。常见的硬故障也可分成两类：一类是由手机工作频率不准引起的，另一类由接收通道不良引起。检修时先进入手机测试状态（8800X将CVC外接连?
First, the service does not fault phenomenon Normal boot, programming and system settings are normal, do not turn good service or weak signal. Analysis and maintenance of mobile phones do not service can be divided into two major categories of hard faults and soft faults to hard faults common. Common hard faults can also be divided into two categories: one is caused by the phone operating frequency is not allowed, and the other caused by the poor reception channel. Maintenance into the mobile phone test state (8800X CVC external connection?