锁相环引发的计算机不启动故障研究

Study on Computer Non-startup Failure Caused by Phase-locked Loop

某产品计算机在上电过程中出现了不启动的现象,本文通过产品供电和产品控制入手,确认故障是由DSP芯片的锁相环电路故障导致,通过产品多次上电剔除故障,保证了产品的顺利生产。

The computer of a certain product does not start during the power-on process.This article starts with product power supply and product control to confirm that the fault is caused by a phase-locked loop circuit failure of the DSP chip.The fault is eliminated by multiple power-on of the product to ensure the product.