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故障现象:发现刚洗出的片子发卷且烫手,用手触摸出片口,感觉极烫。调节温控电位器不起作用。故障检修:打开侧板,让设备处于工作状态,发现100ＰＣＢ板上的发光二极管ＣＲ1长亮,而ＣＲ5却不亮,这证明800ＰＣＢ板并没有发出加热指令,说明该板工作正常。故障出在100ＰＣＢ上。进一
Symptoms: It was found that the film that had just been washed out was curled and hot, and the mouth was touched by hand. It felt extremely hot. Adjusting the temperature control potentiometer does not work. Troubleshooting: Open the side panel and let the equipment work. It is found that the LED CR1 on the 100 PCB board is bright and the CR5 is off, which proves that the 800 PCB does not issue a heating instruction, indicating that the board is working properly. The fault is on the 100PCB. Into one