| 摘要 |
When one performs an interpart short-circuit test where short-circuit is made between the terminals of the parts mounted on the printed circuit board 1 to find out the existence of fuming, firing and red heating, a spacing test that verifies if the distance between the patterns of the printed circuit board meets the prescribed insulating clearance, and an interpattern short-circuit test that verifies the existence of fuming and firing by shorting between the patterns that do not satisfy the prescribed insulating distance, an automatic tester receives the printed circuit board 1 to carry on the safety test, a control unit outputs the signal that controls said automatic tester and inputs the data of the test results, a detecting means detects the respective test results of fuming, firing and red heating, the memory incorporated into the control unit stores the data, and a recording means records the test results.
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