论文部分内容阅读
故障现象10:无字符显示。一般原因为:字符振荡电路PCA8516内部不良。更换PCA8516。故障现象11:无图像,有字符,有伴音。一般原因为:图像处理电路R527内部开路。更换
Symptom 10: no character display. The general reason is: Character oscillation circuit PCA8516 internal bad. Replace PCA8516. Symptom 11: no images, characters, sound. The general reason is: Image processing circuit R527 is internally open. replace