I was happily printing away when I got an error message about my waste toner tank being full. I emptied it and returned the tank to its place and the printer was just fine for a week or two. Now, it has once again given me the same error message, and I've once again emptied the tank and reinstalled it, but this time the error message won't budge. Help!!
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
There was a problem with the waste toner level sensor in some of these machines. I had to have mine replaced under warranty in the end as it was too frustrating to keep the sensor light path spotlessly clear. Stuart
I did cleaning, drying, etc. as mentioned by caaa, but no result.
After noticed a square hole on a waste tank which has to slightly push the black plastic arm in printer by inserting the waste tank. But there is missing something (I don't know the reason, if dropped out, or...) that is over hole about 5mm. Fix this missing distance with small wire (e.g. chipped proper rounded part of paper clip) fitted into the hole. Carefully check if the wire is not big too much, not to brake the arm.
Works until now.
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You have to empty out the waste toner bottle... The bottle is a milky white plastic and I believe it is right under the fuser unit. It should slid out toward you. Carefully dump the toner out of the bottle into a plastic garbage bag and re install the bottle and you are done....
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.
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.
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.