Seems something stuck in Fuser centre area, sticker etc
SOURCE: Waste Toner Full/ Not Install
Behind the little container for the waste toner there is a sensor that senses whether the toner basket is full or not. If the sensor itself is dirty, it can give a false reading. First try cleaning out the area under the container to see if the switch works. Also make sure the container is clean, because the sensor works by sight, so if it looks full because it's dirty, it will give a false reading. I have heard of people disabling that sensor in various ways, but that can get dangerous to the printer. I can't recall the details on that exact model, but I believe there is a diagnostic of some sort that can test that sensor to make sure it works right to begin with.
SOURCE: waste toner tank full/not install keep displaying
The sensor for the waste toner tank is dirty or defective. The toner sensor is on the right as you look at the panel just below the liquid crystal display. There is a bump in the clear plastic just below the circular right vent port, that's where the used toner pours in. When you clean out the toner cartridge there is some residue left that makes the sensor think it's still full. Take a piece of paper towel and a small screwdriver (I'm told a bent coat hanger will work, too) and clean the inside of the sensor window inside the used toner cartridge (w/ access through the toner port). It looks like a little raised groove on the right. Just wipe it until it's clear on the inside. The sensor can now see through the window and you should be okay. Otherwise, the sensor may need to be replaced by an authorized Samsung technician. Let me know how it works out!
SOURCE: waste toner tank
A few things can cause this.
The way the printer determines whether the waste tank is full is via 2 optical sensors, one on either side of the tank. You'll see a rounded bulge on one end of the tank - the sensors are on either side of that, when the tank is installed. Under normal operation, light passes through that and the printer reads it as meaning the tank is not full, until the tank fills far enough to fill that bulge, and thus block light and give a tank full reading.
If the tank gets too dirty, not enough light passes through and it gives false tank full readings. So the first thing to try is cleaning the tank with soap and water. Make sure that area is as clear as possible.
If that doesn't work, it has also been reported that the sensors themselves are unreliable. I am told Samsung will replace the sensor for free if it's been less than 3 years. If you call them, insist that it is the sensor that is the problem, or they will try to get you to replace the waste bin, at your expense, first: 1-800-726-7864.
Alternatively, you can remove the sensor from one side, and reattach it to the other side - putting the two sensors in contact so that they always read an empty waste tank. Do this at your own risk, however, as you will have to check the tank regularly and make sure it doesn't overflow. Doing this bypasses the sensor, so there is no longer any warning if your tank is overflowing.
Hope some of that helps you.
-Dyllan
SOURCE: phantom paper jam . Samsung clp300. Flashing red light
you clean your printer drum unit wast ink poder drum open and wast ink
SOURCE: i have emptied the toner
The Toner waste bin should be made transparent enogh to pass the light to detect the sensors.
Even after cleaning the waste toner waste bin if thie MFP shows the error you may clear the memory by calling samsung service center, or an alternate the service center may help you for further assistance
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Set toner container. The toner container is not set properly. Set the toner container properly. See page 5-5 of the operation guide.
Replace Waste Toner Box The waste toner box is full. Replace the waste toner box with a new one. See page 5-5 of the operation guide.
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