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本文介绍ＨＰ７８系列床旁监护仪电源板中ＶＲ１稳压二极管变质失效后，对主机不工作故障进行原理上的分析及排除故障的过程。
This article describes the HP78 series bedside monitor power board in the power supply board VR1 Zener diode deterioration after failure, the principle of the host non-working failure analysis and troubleshooting process.