聯(lián)想M7400提示EF
更新時間：2024/11/25 9:37:38,view:91聯(lián)想打印機M7400蘇州聯(lián)想打印機售后服務(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，
聯(lián)想M7400提示EF
技術(shù) 學徒工 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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