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激光打印機預熱超過2min或定形不牢,文字脫落

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正確答案:

一是考慮室內溫度是否達20℃以上;

二是檢查熱敏電阻是否接觸不良或失效;

三是看電壓是否達到220V;

四是看紙張、墨粉是否太潮濕

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