A television for causing a test pattern for diagnosis to be displayed on an OSD screen

摘要

So that a test pattern for a fault diagnosis, which allows a viewer to quickly and accurately grasp a fault state, is displayed on the OSD screen by displaying a test pattern on the screen (CRT), which is a block diagram of the fault diagnosis, Is disclosed. When the viewer switches the power of the television on, the video signal, which is a broadcast program received through the antenna, is displayed on the screen and a voice is outputted through the speaker. When the video or audio displayed on the screen of the television is not in a normal state while watching the television, the viewer displays a test pattern, which is a block diagram of the failure diagnosis, on the OSD screen of the television. When the test pattern is displayed on the OSD screen, the microcomputer automatically compares the operation signal applied from each position of the television with the set value of the normal signal. When the operation signal applied from each position is different from the set value, the microcomputer displays an abnormal state at a corresponding position of the test pattern. Therefore, the viewer checks the display indicating the abnormal state displayed on the test pattern, And can be confirmed accurately.