<span style="font-family: 宋體; mso-ascii-font-family: "times new roman"; mso-hansi-font-family: "times new roman";"> 監控燈閃爍。如果監控燈閃爍頻率為1hz<span style="font-family: 宋體; mso-ascii-font-family: "times new roman"; mso-hansi-font-family: "times new roman";">，則eprom<span style="font-family: 宋體; mso-ascii-font-family: "times new roman"; mso-hansi-font-family: "times new roman";">有故障；如果閃爍頻率為2hz<span style="font-family: 宋體; mso-ascii-font-family: "times new roman"; mso-hansi-font-family: "times new roman";">，則plc<span style="font-family: 宋體; mso-ascii-font-family: "times new roman"; mso-hansi-font-family: "times new roman";">有故障；如以4hz<span style="font-family: 宋體; mso-ascii-font-family: "times new roman"; mso-hansi-font-family: "times new roman";">頻率閃爍，則保持電池報警，表示電壓已不足。
<span style="font-family: 宋體; mso-ascii-font-family: "times new roman"; mso-hansi-font-family: "times new roman";"> 監控燈左滅右亮。表示操作面板的接口板03731<span style="font-family: 宋體; mso-ascii-font-family: "times new roman"; mso-hansi-font-family: "times new roman";">板有故障或crt<span style="font-family: 宋體; mso-ascii-font-family: "times new roman"; mso-hansi-font-family: "times new roman";">有故障。
<span style="font-family: 宋體; mso-ascii-font-family: "times new roman"; mso-hansi-font-family: "times new roman";"> 監控燈常亮。這種故障，通常的原因有：cpu<span style="font-family: 宋體; mso-ascii-font-family: "times new roman"; mso-hansi-font-family: "times new roman";">有故障；eprom<span style="font-family: 宋體; mso-ascii-font-family: "times new roman"; mso-hansi-font-family: "times new roman";">有故障；系統總線（即背板）有故障、電路板上設定有誤、機床數據錯誤、以及電路板（如存儲器板、耦合板、測量板）的硬件有故障。
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