屏幕右下角出现一个小钥匙(童锁),是长虹 C1851机器一个典型特征(本人已遇过三台同现象的故障机器)。童锁符号一旦出现,除“开/关机”键外,其他各按键均失灵。该机遥控器及面板都没设置解锁按键,因而使本人在初遇此现象时,颇费了一番周折,好在从中熟练地掌 The bottom right corner of the screen there is a small key (child lock), Changhong C1851 machine is a typical feature (I have encountered three failures with the same phenomenon machine). Child lock symbol appears, in addition to “on / off ” key, the other buttons are malfunctioning. This machine remote control and the panel did not set the unlock button, so I first encountered this phenomenon, it took a lot of twists and turns, but fortunately skilled