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粘結指數攪拌儀常見故障與檢修
作者:    發布于:2021-07-30 22:41:55    文字:【】【】【

粘結指數攪拌儀常見故障與檢修

1.無顯示。應先檢查220V電源插座及保險絲;

2.按下[啟動]不能啟動;檢查面板上[啟動]按鈕內有無斷線、電路板上可控硅是否毀。

3.開機常轉;檢查電路板上可控硅是否毀壞;  

4.數碼管無顯示,先檢查面板顯示開關和開關接線有無斷線,如果無斷線再檢查線路板有無工作電壓和變壓器出線有無斷線;

 5.數碼管少筆畫,檢查熒光數碼管少筆畫的腳上有無電壓,如有電壓說明數碼管壞,需更換同型號數碼管,如無電壓應檢查集成電路有無焊接問題,如焊接完好說明集成電路已壞,更換同型號集成電路;

6到數不停與不到數就停,應檢查線路板插頭旁邊的開關二極管及數字旁接線有無斷線。

       


 
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