Question about Canon NP 6050 Copier

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Code E020 on a NP 4050

I checked the toner hopper-worm gear and all works are fine ( I even connected the hopper motor to 12 volts and all is working perfectly in the hopper). I also took out the ATDC sensor and cleaned it-but he error code is still there- what's my next step?

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Cogz has a good idea. Could also be you waster toner hopper is full. Usually stored inside the drum unit. If drum has been in the unit for a while without being emptying it could cause an error. you will have to remove the drum and empty out than reset code and try again. If you have enough toner in the unit the sensor will pick it up. The toner sensor for the fill hopper is against the rear wall and make a small squeek sound called a Piezo sensor. Detects toner by sound. Hope this helps

Posted on Jul 22, 2008

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How about this, Take the developing unit out and take the ATDC sensor out and plug the hole up in the developing unit. Reinstall the developing unit and cheat the front door switch and plug the sensor back in and hold it in your hand and make a copy. Dose it vibrate? If it dose not the sensor is bad... If you really get tired of working on the problem and you don't go to the copier to often and they are not billable, try this.... Take the top cover of the dev. unit and spoon toner into the dev. unit till it is almost full and reinstall it and clear the error code in service mode and just remember to add toner in to it every so often.

Posted on Jul 13, 2008

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