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1 故障经过:机器开机后扫描均正常,但在进行摄影时连续出现白片现象,遂停机检查。2 故障分析与检修:摄影操作(SDC)台的图像(imerge)通过视频信号(图像信号)到达继电器开关,图像再经过继电器开关传送列摄影机中的荧光屏上(Screen)形成可视图像;可视图像经过快门在胶片上曝光形成可视照片(附简易图解)。整个摄影时间大约为5S,而曝光时间仅为0.6S。出现白片现象我们颖是三个环节出现的故障。①操作(SDC)台的屏幕图像(image)在通过视频信号传送过程中电缆线路出现故障。②摄影机中的快门出现的故障。③继电器开关的定时电路出现的故
1 Failure: After the machine is turned on, the scans are all normal. However, when the camera is taking pictures, white film phenomenon occurs continuously and the machine stops for inspection. 2 Failure analysis and maintenance: The image (imerge) of the photographic operation (SDC) station reaches the relay switch through the video signal (image signal), and the image is then transmitted through the relay switch to the screen on the CCD camera to form a visible image; The image is exposed on the film through a shutter to form a visible photograph (with simple illustration). The entire shooting time is about 5S, and the exposure time is only 0.6S. The emergence of white film phenomenon we Ying is the failure of the three links. 1 Operation (SDC) Screen image of the station failed during the transmission of the video signal. 2 The malfunction of the shutter in the camera. 3 relay switch timing circuit appears