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问2:遇到无图、无声,只有“蓝屏”故障时,怎样检修?或怎样解除“蓝屏”,还故障的本来面目,以便检修?答:首先谈谈如何解除“蓝屏”现象,使故障起因的真正故障现象表现出来,以便对故障范围和故障部位的正确分析判断,避免检修工作的失误。对于少数机子(如:长虹 NC-2机心)遥控器上有“B/B”(蓝屏开/关)键,操作该键便可方便地解除“蓝屏”砚象。而多数机子解除“蓝屏”现象只能从“蓝屏”控制电路入手,不能在电台识别信号电路做“手术”,这是因为在人为取消电台识别信号后,不但不能解除“蓝屏”现象,反而会产生十几分钟后自动停机现象,不利于检修工作的进展。那么,在“蓝屏”控制电路哪个部位“做手术”,最为方便容易做到呢?
Question 2: Encountering no picture, no sound, only the “blue screen” failure, how to overhaul? Or how to lift the “blue screen”, but also the true nature of the failure, in order to overhaul? A: First, talk about how to lift the “blue screen” The cause of the real failure phenomenon manifested in order to correct the scope of the fault and fault analysis and judgment to avoid overhauling the work of mistakes. For a few machines (such as: Changhong NC-2 movement) remote control with “B / B” (blue screen on / off) button, the operation of the button can be easily removed “blue screen” inkstone. The majority of aircraft to lift the phenomenon of “blue screen” can only start from the “blue screen” control circuit, the radio signal can not identify the circuit to do “surgery”, because after the cancellation of radio identification signal, not only can not lift the “blue screen” phenomenon, Produce more than ten minutes after the automatic shutdown phenomenon is not conducive to the progress of maintenance work. So, which part of the “blue screen” control circuit “surgery”, the most convenient and easy to do?