复印机故障显示 back cover open close the back cover

复印机故障显示 back cover open close the back cover 复印机4050显示cover is open as shown close back cover 我的复印机出现close the cover ,不好用了, 复印机4050cover is open as shown close it是什么意思 复印机上显示的A5R是什么意思 打印机型号：兄弟FAX-2820.不能打印 显示close the back cover open ,可是后盖是关好的 怎么办? 出现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. the back cover 什么意思 Back cover open ciose the Back coverclose back face 请问哪位朋友 back face 与back cover 复印机显示图标太阳和人红灯什么问题夏普 AR-2718 复印机显示图标太阳和人红灯 请问colse the back cover open 打印机上的 back cover open close the back cover 是什么意思呀卡纸了怎么办呀 兄弟7010开机滴滴的响、出现Back cover open close the Back cover是怎么回事? 兄弟7010打印机滴滴响.back cover open the back cover怎么办 我的联想3220一体机提示Back cover open close the back cover.如题