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Try to power on the printer without the toner kit and the waste toner box. If the printer stacks again at self test. Next step.... remove one part at time and check if the printer displays any message. First remove the developer unit and power on the machine (normal message "Missing Developer Unit"). Then pull out the fuser unit and power on the machine (normal message "Close Rear Cover"). And finally, remove the Drum Unit and power on the printer (normal message "Call Service 7410").
If the printer still stacks at Self Test, then that is not a good sign. Try to upgrade the printer' s firmware (system + engine). There is a possibility to go further from Self Test.
If it does not, then you have to replace the main pwb.
Its not talking about the bypass tray. Its saying the right side door isn't closed. There is a cover above the fuser that may not be closed. Open the right side door and see if you see any broken parts. If everything is closed correctly and not broken, the message will go away.
Fuser Door Open is the message on the display when it's powered on. I took the back apart, removed the fuser, looked all over. I couldn't see any kind of sensor, optical or mechanical that makes when the door is closed. There's an access plate with a blue latch below the fuser that makes an optical sensor and a mechanical sensor, but that seemed to be OK. It didn't seem like something that would be called a fuser door. So, I pushed on it where it made the mechanical switch and the printer hummed to life and the message went away. I took the fuser out and examined it. The metal brackets where the pivot parts were, seemed a little bent. I straightened them out, stuck it back in and that fixed it. By moe who hasDell MFP 1850DN this might also help... or
Fuser Door Open
1. Make Sure the Paper Tray is Loaded Correctly With no Obstructions
2. Clear the Paper Jam in Tray 1 or 2
3. Clear the Paper Jam in the Multi-purpose Tray
After a paper jam occurs in the rear cover of a Dell
Laser Multi-Function Printer 1815N, the printer will not resume when
the jammed paper is removed. This is the normal behavior of the printer
as there is no sensor on the rear cover of this printer.
To open the back cover and remove any stuck paper, perform the following steps:
Open and close the front cover. The jammed paper may automatically exit the printer. If the paper does not exit, go to the next step.
Gently pull the paper out of the output tray.
If you cannot see the paper in the output tray or the paper does not move when pulled, open the rear cover.
Skip to step 9. If you do not see the paper, go to the next step.If you see the jammed paper, push the two blue pressure levers up and remove the paper.
Release the blue strap, the rear cover stopper, and fully open the rear cover.
Unfold the duplex guide fully.
While pushing the fuser lever to the right, open the fuser door. NOTICE:
Make sure to unfold the duplex guide before opening the fuser door, or the fuser door may be damaged.
Pull the jammed paper out.
Return the levers, fuser door, rear cover stopper, and duplex guide to their original position.
Close the rear cover.
Open and close the front cover. Printing automatically resumes.
There is a black sensor that detects when the fuser door is closed, and an actuator that the sensor either sees or doesn't see. If this sensor is dirty, it might not be seeing the actuator. It could also be broken or knocked out of place.
Locate the actuator on the side door (a small metal or plastic tab that sticks out from the door) and find the corresponding sensor. Make sure the sensor is in place and not broken or moved, and make sure it's connector is well-seated. If you have a can of compressed air, blow it into the sensor to clear away any dust or dirt.
Hi, I had the same problem. The following Cause and solution may help you fix your machine.
All refereces to left and right are facing the front of the machine as if for normal use.
The cause is due to the connector on thtop left rear of the imaging unit. this connector is mated with a coresponding, retractable connector in the body of the machine. When you open the cover over the top of the imaging unit, this connector retracts back into the body of the machine and when you close the lid it should re-engage with the imaging unit, The problem is that it dosen;t reconnect. I have asumed that it is due wear in the connector operating mechanism. This solution was effective for my printer.
remove the topcover (after removing the colour catridges )and. remove the left hand side panel. You will see a nylon gear mechanism. Sqeeze together the nylon clip inthe centre of the gear wheel, and pull the gear about halfway off. This should allow you to move the vertical geared bar up 1 notch. .Push the gear wheel back on and try the machine to see if it works ok. All covers will need to be closed and if it works ok , reassemle the machine. Job done -about 10 to 15 mins. It tookme alot longer to find it,so some feedback would be appreciated.
If you open the back cover (depress the release button on the top right) If you lift it up look for two black anchors that grab the base when you close the lid. I have one that has a broken tab on the left side, which happens to be the same side as the cover closed switch. If the top is not closed all the way the rollers do not line up and the cover switch is not depressed to let normal operation. Also, if the switch arm is busted (case colored plastic push pin protruding from the cover) it will not make contact with the switch when closed. Try closing the cover and push down on left side of the fax. Does the error go away? If not, the actuator arm or the switch are bad.
Your Samsung ML-3561ND looks to be an HP Laserjet 4000-series printer. Same engine, different electronic.
The fuser is in the rear of the machine, and may be relating to the drop-down rear panel where you clear paper jams. Open it and give it a good push closed and the printer should cycle and come ready.
Let me know what happens!