匹克ＡＸＩＳ型双探头ＥＣＴ是性能非常稳定的机器 ,但在更换准直器时容易出现故障 ,本文就特殊故障１例介绍如下故障现象更换高能准直器时 ,探头２（以下称Ｈ２）进不到位 ,准直器锁不上 ,探头退不出 ,处于死机状态 ,且无任何错误提示。关机再开机 ,故障依旧。故障分析与检修 Peak AXIS dual-probe ECT is a machine with very stable performance, but it is prone to failure when replacing the collimator. This article will introduce the following faults for a special fault in one case. Symptom When replacing a high-energy collimator, probe 2 (hereinafter referred to as H2) cannot enter. In place, the collimator cannot be locked, the probe can’t be returned, and it is in a dead state without any error indication. Turn off and then turn it on. The fault remains. Failure analysis and overhaul