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本栏目的读音对象是家电检修人员,写作稿件的形式不拘,既可高层建瓴,也可小溪流水。在内容上一定要理论密切结合实际,把丰富的检修经验上升到理论认识。一、机型:A6[例1]故障现象:听筒无声,但耳机正常。该机因进水后出现故障,经过仔细测量,发现R616、R617、R618三只电阻已变值,将其逐一更换后故障排除[例2]故障现象:背光灯无显示。拆机后先更换 LCD,故障依旧。测 U503的⑥脚电压为0V,不正常。更换 U503后,故障排除。[例3]故障现象:键盘灯亮度不足。
The object of this column is the home appliance repair personnel, manuscripts in the form of informal writing, both high-rise built, but also stream water. The content must be based on the theory in close connection with reality, the rich maintenance experience rose to theoretical understanding. First, the model: A6 [Example 1] Symptom: The handset silent, but the headset is normal. The machine due to water after the failure, after careful measurement and found R616, R617, R618 three resistance has changed, it will be replaced one by one Troubleshooting [Example 2] Symptom: no display backlight. Disassemble after the first replacement LCD, failure still. Measuring U503 ⑥ foot voltage is 0V, not normal. After replacing the U503, troubleshooting. [Example 3] Symptom: keyboard light is not enough brightness.