联想M7400打印机代码错误6A

联想M7400苏州联想打印机售后服务中心客服热线69616769，苏州联想售后电话，联想售后网点， 联想M7400一体机故障视频教程, 联想M7400硒鼓错误来回滑动, 联想m7400开机报“自我诊断,15分钟内将自动重启”, 联想M7400打印机提示滑动蓝色滑块, 联想m7400硒鼓错误,打开前盖,维修视频

联想 M7400打印机代码错误6A 联想常见故障问题解答 电子学生 2015-1-30 10:08:19 

 先顶再看，学生必备

联想常见故障问题解答  2015-8-19 8:21:55 

 6A 定影故障

联想M7400售后技术论坛 亚光 2018/9/1 10:36:04 

 错误代码OA，卡纸后出现的。谢谢

联想M7400售后技术论坛 杨嚏撰 2018/9/1 21:07:15 

 Code: OA
Description: The back cover is open upon duplex-printing. (The back cover sensor is OFF)
Causes: 1 Harness connection failure of paper eject sensor PCB ASSY. 2 The member part to press the back cover sensor which is located at the inner side of the back cover is broken. 3 The member part to press the back cover sensor which is located at the duplex tray is broken. 4 Back cover sensor failure