There are 2 switches regarding this error message " front and rear cover open." so pls. check with the front door right side portion. you can see a small leaver there, pls. check that liver correctly go inside the cover after we close the front door.
other switch at the back door paper exit area. pls. check the door closed properly nor not ? that door control a switch liver attached with the fuser unit.
first switch in the HVPS board and second switch at SMPS.
kindly check it and revert back.
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