HUAWEI TECHNOLOGIES CO., LTD.
Page 19
Instance 3: Slow response and startup difficulty
Symptom: Sometimes it was impossible to start up the mobile phone.
Fault analysis: It was discovered that the startup current differed each time. Measuring of the
Reset signal showed that the signal was available sometimes and unavailable at other times. It
was judged that the problem was CPU to poor soldering.
Solution: Re-solder U100.
To Next Page
Loading...
