一台日立VT—427E录像机因机械磨损严重,经常出现溢带、绞带和停转等多种机械故障,实属一个“老弱残兵”。检修中常需要进行模拟加载,特别是为了反复检查和验证,还常需要进行正常加载和模拟加载的不断转换。传统的模拟加载方法是要用黑胶布把供带侧和收带侧光电管分别贴住,不让带盒灯光线照射它们。但是VT—427E机芯中光电管组件不像有的机型那么显露,尤其是它的右边收带侧光电管组件非常隐蔽,粘贴胶布很困难,即使能贴上也容易漏光,使 A Hitachi VT-427E video recorder due to severe mechanical wear and tear, often occur over, ribbon and stall and other mechanical failure, it is an “old and weak remnants.” Maintenance often need to simulate the load, especially for repeated inspection and verification, but also often need to carry out the normal loading and simulation of continuous conversion. The traditional analog loading method is to use black tape to tape side and close the side of the photocell are affixed, do not let the tape box light exposure to them. However, the VT-427E movement in the PV module is not as revealing as some models, especially its right side of the phototool tube side is very hidden, paste tape is very difficult, even if the paste can easily leak light, so