C2051 waste toner bottle full message, I empitied the bottle but message is still there and machine is not usable.

SOURCE: waste: near full

take the waste bottle out & empty it. I have never had to buy a new one.

SOURCE: Used Toner Bottle Full Ricoh Aficio 1035P

The used toner bottle is not actually a bottle at all. Not sure what you emptied, but it sounds like the actual toner bottle itself. The waste toner is contained with in the transfer belt unit. When you open the right side cover, this is the unit that is attached to the door. It is a brown belt that provides transfer of the image to the drum and separates the paper from the drum. Remove this unit by locating the release levers on either side of the transfer unit (push both of them towards the machine). After removing, you will need to actually take the belt unit off of the transfer unit. To do this, remove the two tension springs on either side, and then take a small flat bladed scredriver and release the clips that hold it down (you will see when you get started). Once you get it off, you will see the long blade that actually scrapes the toner off the belt. Dump the waste toner out this end. You will need to shake it pretty hard. A better (and cleaner) option is to vaccum it out using the crevace tool on you vac. Just make sure you completely empty it. Now....do everything in reverse.

Hope this helps,
Chad

SOURCE: lanier LW324 waste toner bottle full

Open the machine and to the right under the drum you should see the the black powder (toner) going down into container the right lower side  cover must come off. probably a service call will be needed

SOURCE: can you resue a waste toner bottle

Change the waste toner bottle. :-)

SOURCE: waste toner bottle - Ricoh MP W2400

Just an FYI, this can be very messy. If you figure out how to get the thing out (should be near your consumable supplies like toner and image units) place the whole unit into a plastic bag, tie the bag, then shake it out gently. You may have to learn how it opens in order to "open the door". Best to use a vaccum with a heppa type filter as normal vaccum filter is too course for the fine toner partcles. Be ready for toner volcano.