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復印機預熱不停止如何檢修?

發表日期:2020/12/16 9:21:09 文章編輯:歐迪辦公 瀏覽次數:2670標簽: 復印機預熱不停止如何檢修?   

  開機后,操作面板上的預熱信號很長時間不消失,使機器無法復印,該如何檢修?


1) 檢查熱敏電阻
  檢測定影溫度的熱敏電阻(熱傳感器)安裝在距定影加熱輥很近(1毫米左右)的地方,預熱指示燈滅,可以復印指示燈亮,當熱敏電阻阻值改變或斷路時,則無法正確地檢知定影輥溫度,這時定影加熱燈總是亮的,達到預熱溫度亦不熄滅。另外,熱敏電阻與加熱輥相對的表面感熱面被油污,灰塵等糊住,或熱敏電阻加熱輥表面距離過長,也會使預熱時間變長,甚至檢測不到定影溫度。應拆下用酒精清潔,安裝時調整好與加熱輥的距離。

2) 檢查其它故障
  機器因卡紙、墨粉用完、掃描部件有故障等原因而出現故障信號且未排除時,機器則不能繼續使用,定影加熱電路不能工作,必須在排除了這些故障后才可進行預熱。


3) 檢查定影加熱燈
  定影加熱燈燈絲繼開,不再發熱發光,或加熱燈接觸不良。需要修復或更換。

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