cover is open plesse close the scanner cover

cover is open plesse close the scanner cover 复印机4050显示cover is open as shown close 复印机4050cover is open as shown close it是什么意思 联想传真机M3120复印时提示 Cover is Open Close the Front Cover 是什么意思 传真机出现 cover open m7020联想打印机出现以下提示:cover is open close the front cover请问是什么意思,如何解决该故障? cover is open front cover replace toner the hp lawerjet 1020 front cover door open or the toner cartridge is missing. 出现back cover open close the back cover. 复印机故障显示 back cover open close the back cover 出现back cover open close the back cover.联想7020出现back cover open close the back cover. 请问这英语是什么意思：printer cover open 打印机佳能MF3110出现open printer cover 传真机出现< front or rear> cover open 出口保险单里的OPEN COVER open cover,then remove jammed paper. 请问colse the back cover open