I have replaced the waste toner tank, but the "Waste toner tank full/Not installed" message won't clear. I did open the left door where the toner cartridges are located (to a 90-degree angle and then closed the door securely). The message still won't clear.
I had the same problem with my printer. On the back of the waste toner cartridge is a tab that sticks out. A photoelectric shine thru this tab to let you know when the cartridge is full. My photoelectric had gone out and was giving the same error message. I took my printer apart and cut the wires loose on each side of the photoelectric and shorted them together to complete the circuit. The only problem in doing this is you have to occasionally check the waste toner cartridge yourself to make sure it does not overfill.
To check the LED function as follows:
1) remove the waste container
2) flip the black mechanical sensor up into expose the LED emitter and sensor. If the LED is operational the error message disappears and the On Line/Continue light turns green. To validate the test place a finger or other opaque object in the path of the LED. The error message reappears and the On Line/Continue light turns orange(ish).
Swabbing the section of the waster contain where the LED passes thru fixes the problem for me also. Thanks unclDLights.
Here is what worked for me: empty the container fully, then rinse with water a few times. Add dishwashing liquid soap (cuts grease and such), cover the two wholes with the green covers provided. They don't appear to serve any other purpose...
Rinse all the soap until all bubbles run out. Dry (paper towel), until completely dry. Meanwhile go to the printer and blow (canned air or a good lung full with eyes closed) into the two circular spots where toner empties into container.
Open doors as indicated before, close all doors and Voila! You just saved $50+.
There is a small tab on the tank that appears to push a small black proctective cover away from the photoelectric eye when the tank is inserted (is that what ColtSecurity was refering to?). In my case, the sensor was not bad (yet). What fixed it for me was to take slightly damp tissue wrapped around a curved wire and use it to clean the residual toner dust off the inside surfaces of the proturding window on the tank that the photosensor "looks through".
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The C25 stores toner in a waste toner container. On the front of that container there is rectangular clear window that fits into a sensor when installed into machine. The sensor passes a beam of light through that window. When the bottle is full there is toner inside that clear plastic window which stops the light from making it through the window and the machine will tell you the waste toner is full. Just dumping the container out will not clear that window and by putting it back in the machine you will get the same toner full message. If you are going to try to reuse that container you will have remove the black plastic cover that is glued to the container above the clear plastic. Then use something like a Qtip to clean all the toner off of that clear window(much easier and faster to just replace in with a new container). if you still get the waste toner full message after you install it then remove it and wipe off the sensor that the clear window sits in. This will clear the message and you can continue your copy job.
How are you cleaning the tank? Just dumping the contents into a trashcan may not work. The printer uses a light sensor to detect whether the tank is full. When the light does not shine through the clear window of the tank, the printer thinks that the tank is full. Sometimes cleaning the window with a cotton swab will make it work, but it can be difficult since the location of the window with respect to the opening of the tank is not a straight shot.
Another way to clean it would be dump the waste toner into ther trashcan. Tap the tank a few time to get as much of the toner out. Then add some soap and water into the tank and seal the tank opening with the green lid. Then shake the soapy water in the tank for a about a minute. Then dump the soapy toner/water out. Rinse again with just water and and allow it to dry. You don't have to get the tank completely clean, just enough to stop the waste tank error message.
The "waste tank" is located behind the front panel that has the SAMSUNG name on it. Press on the upper corners of this panel and it will open up to reveal a clear plastic tank on the right side.
This tank pulls out easily and has two holes for excess toner to flow into it.
Look at the side of the tank that has the holes. You should see a part of the tank that extends out from the tank but ends in a clear square. The waste tank sensor "looks" thru this clear plastic square to determine if the tank is full. I.e. if toner is in this area and you cannot clearly see thru both sides, the sensor will tell the printer that the tank is full and needs to be changed.
If the tank is not full, use a long cotton swab and clean out the inside of this area. Once you can see thru both sides, carefully replace the tank back into the printer and turn the printer back on.
If done properly, the error should go away and you should be able to continue printing. I have doen this and it works fine.
(Some posts have had people cut this part of the tank off and simply tape over the hole that is made with strong tape. This bypasses the sensor and would allow the printer to run again. I have not done this as I do not want the possibility of toner spilling in my office.)
The sensor could be bad and causing the issue. If this is the case, it may be cheaper to purchase a new printer - CLP-620 ND is a duplex, networked color laser jet that is selling from frys.com for $315.
The wate motor transfers (you guess it) waste toner to the waste toner bottle. If the bottle fills up, the motor cannot transfer more waste to it. This is rare, for the printer should ask for a new waste toner bottle when the previous one fills. However,it happens frequently when users try to empty and clean the bottle instead of replacing it.
If a new waste toner bottle is in place, then the printer needs a new motor, which can only be purchased through an Authorized Service Center.
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!
What I have started to do is to actually wash the toner tank out with water and make sure it is good and dry then be sure the section that breaks the light sensor is good and clean (it is on the left side as you look at the backside - the side that goes toward the printer - and protrudes out) the tank full indication comes on when the tank gets dirty