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这次介绍“菜单紊乱故障”排除情况。故障现象:按CTRL和HEREIS能引导程序,但键盘的功能键和LED显示均不正常。发光二极管(LED)不应显示的部位全显示出＄字符。另外功能键虽然有活性,但显示的字符不对。不能正确引导下一程序的操作,因为显示的字符不对。故障分析:我们把功能键显示的各组(层次)的字符称为菜单。现在菜单发生紊乱现象,有的功能键的字符中有个别字母是对的,有的全部错乱了。但按下各个功能键均有活性,就是显示的字符不对。仔细分析菜单紊乱的现象,又发现有规律性。如送入日期、时间和SW9100后,出现如下菜单,我们用比较的方法示出:
This time to introduce the “Menu disorder trouble” exclusion situation. Symptom: Press CTRL and HEREIS to boot the program, but the keyboard function keys and LED display are not normal. Light emitting diode (LED) should not show all the parts show $ characters. In addition, although the function keys are active, the characters displayed are not correct. Can not properly guide the next program operation, because the characters displayed wrong. Failure Analysis: We display the function keys of each group (level) characters called menu. Now the menu disorder occurs, and some function keys have some letters in the characters are right, and some are all confused. However, press the various function keys are active, that is, the characters displayed incorrectly. Careful analysis of the phenomenon of menu disorder, but also found a regularity. Such as into the date, time and SW9100, the following menu appears, we use a comparative method is shown: