聯(lián)想M7400提示EF
更新時(shí)間:2025/7/10 7:31:53,view:103聯(lián)想打印機(jī),聯(lián)想M7400打印機(jī)蘇州聯(lián)想打印機(jī)售后服務(wù)中心客服熱線69616769,蘇州聯(lián)想售后電話,聯(lián)想售后網(wǎng)點(diǎn), 聯(lián)想M7400屏幕顯示內(nèi)存已滿, 聯(lián)想m7400打印機(jī)一直顯示滑動(dòng)藍(lán)色滑塊, 聯(lián)想7400錯(cuò)誤代碼6B, 聯(lián)想m7400硒鼓單元的藍(lán)色滑塊在哪, 聯(lián)想m7400無(wú)法打印6a,7400維修視頻2025/4/3
聯(lián)想M7400提示EF
技術(shù) 學(xué)徒工 發(fā)表于 2023/4/23 Print Unable EF

3. Verify the version firmware of your machine by pressing the * (star) , # (pound) keys at the same time. The LCD will display an alphanumeric number.
- If the first letter is G , below, continue to STEP 4 to update the firmware of your Brother machine.
- If the first letter is H , above , the machine displays date/time , standby mode, the issue is resolved.
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