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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Posted on Jan 02, 2017

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Error code E 020 0181 How do I clear error code? Cannon 1150 color laser copier


Hi

Error code E 020 0181 means that the patch sensor has turned bad or is dirty, to access this try removing eac dev unit and gently unscrew each top so that the patch sensor window is visible. Also, check whether the toner hopper is overfull, it happens sometimes that the toner motor worm gear splits as a result of the hopper becoming packed tight. This may cause the worm gear to split and break if the hopper is 1/2 full or less. You may need to replace toner motor, part number (FH7-1762-030). If the toner motor is fine, then check whether the web solenoid is activating. Clean the web solenoid and ensure free action. This would clear error E020. If the error still not disappears then make sure that the DC controller is fine and the connections from the controller are fine.

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1) If toner hopper is overfull, the toner motor worm gear splits as a result of the hopper becoming packed tight. 2) If the hopper is 1/2 full or less, the worm gear splits under normal use.

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*4*
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After verifying that the toner hopper is working properly, check that the web solenoid is activating. Clean the web solenoid and ensure free action. This has been known to clear an E020.

After verifying that all is well with the toner hopper unit, consider the DC controller.

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