Leica CM1900冰冻切片机较普通切片机多了制冷系统,增加了相应的控制电路、密闭操作室等。由于控制电路和制冷系统的增加,故带来故障的可能性也有所提高[1]。笔者所在医院于2009年购进1台Leica CM1900冰冻切片机,使用至今。现将维修与保养情况介绍如下。1在使用中遇到的故障1.1用调节按键调节标本与刀片的距离无反应1.1.1故障描述将标本固定在标本头上,标本头距离的改变是通 The Leica CM1900 freezing slicer has more refrigeration systems than ordinary slicers, adding corresponding control circuits, closed operating rooms, and so on. Due to the increase of control circuits and refrigeration systems, the possibility of failure has also increased [1]. In 2009, the author’s hospital purchased a Leica CM1900 cryo-microtome, and it is still in use today. The repair and maintenance situation is described below. 1 Faults encountered during use 1.1 Adjusting the distance between the specimen and the blade with the adjustment button No response 1.1.1 Description of the problem Fix the specimen on the head of the specimen, change the distance of the specimen head