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PC－603、PC－604自动血球计数器是目前在中小医院中广泛使用的检验设备。其自动化程度较高，但故障率也较高，其中A－B值调节电位器的损坏占有相当比重。这两只电位器只要有一只损坏，就会使A值或B值失常无法调节，同时在显示窗上出现“EEE”符号，使HGB的测定无法进行。这两
The PC-603, PC-604 automatic blood cell counter is currently widely used in small and medium-sized hospitals. The degree of automation is high, but the failure rate is also high, in which the damage of the A-B value adjustment potentiometer occupies a considerable proportion. If only one of the two potentiometers is damaged, the A value or B value will not be adjusted and the “EEE” symbol will appear on the display window, making the HGB measurement impossible. These two