Fault diagnosing method for wiring board
专利汇可以提供Fault diagnosing method for wiring board专利检索，专利查询，专利分析的服务。并且PURPOSE: To improve the reliability of fault diagnosing for a printed wiring board by providing a reference level to decide the contact or non-contact of a probe, deciding whether or not the probe is brought into contact with the point to be measured and preventing wrong diagnosis caused by the imperfect contact, etc.
CONSTITUTION: A signal delivering and receiving which are made through a pin electronics 3 connected to a pin terminal on the printed wiring board 5 are executed in accordance with the built in test program of a CPU1. When a fault is detected, the internal net from the pin terminal where the fault is detected to the fault point in the wiring board 5 is diagnosed. In this case, the probe 4 which operates together with an interlocked robot 7 is moved to a prescribed position in the internal net of the wiring board 5 by the control from the CPU1; then when the probe is contacted with the fault point, a contact confirming means 30 compares a signal level inputted from the probe 4 with the reference signal level set in the means 30, thus the probe 4 is decided whether it contacts with said point or not.
COPYRIGHT: (C)1988,JPO&Japio，下面是Fault diagnosing method for wiring board专利的具体信息内容。
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