故障现象一:朋友电脑上的光驱长时间使用后,读盘能力变得很差。拆开光驱外壳加电,开始读盘正常,但是没过多长时间读盘能力又明显地降低。诊断处理:停电后仔细检查电路板,意外地发现电路板后面的两块芯片温度很高,可能这就是问题所在。分析原因,大概是由于光驱的散热性能不好所 Symptom 1: drive on a friend’s computer for a long time after use, read the disk capacity has become very poor. Open the drive shell power, began to read the disk normal, but not too long time to read the disk capacity and significantly reduced. Diagnosis: After careful examination of the circuit board after a power outage, it was unexpectedly found that the temperature of the two chips behind the circuit board was high, which may be the problem. Analysis of the reasons, probably due to poor performance of the CD-ROM cooling