this copier shows a jam in the LCIT 4050 and displays a J007. but whenever you open the 4050 there is no paper jam, and when you close it it starts printing again. i have tried increasing and decreasing the fan. and have also replaced the paper feed rollers. any ideas on what is causing this? thanks for your help. i have noticed when changing the fan speed that i get a J015 and there is an actual jam.
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