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Hi PeterBJ, Thanks you for your reply. yes, the alarm LED lights constantly. hard reset means service mode. I tried many times to enter service mode or unplug and plug the power cord, I failed. I really don't know how to fix it. Thanks.

Hi The Hat, Thank you for your reply. Actually the alarm LED is not flashing, this is really confusing me. As the image I attached, the alarm LED always lights.:barnie

Hi everyone, My MG7520 does not work anymore. I tried to fix it, unplug the power cord for 15 mins, hard reset, but it still does not work. After I plug the power cord, the alarm lamp will light in a few seconds. and the power lamp will light when I touch it. The LCD screen of the printer does...