联想M7400打印机代码错误6A
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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
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
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