不工作产品分析：失效件已经内部烧蚀，根据经验可判断点火线圈是因为长时间

Analysis of non-working products: The failed parts have been internally ablated. According to experience, it can be judged that the ignition coil is caused by a long-term direct current and the product is seriously heated and then explodes. Due to internal ablation, the cause cannot be determined according to the failed parts. The failure mode is the same as that of IC302 last time. analysis report.

Non-working product analysis: the failure has been internal ablation, according to experience can judge the ignition coil is due to a long period of direct current caused by the product severe heat explosion, due to internal ablation, according to the failure piece can not determine the cause, failure mode and the last IC302 analysis report.

Analysis of non working products: the failure part has been internally ablated. According to experience, it can be judged that the ignition coil is caused by the serious heating and post explosion of the product due to long-time DC power supply. Due to internal ablation, the cause can not be determined according to the failure part, and the failure mode is the same as that in the last analysis report of ic302.<br>