I've got a Ricoh Aficio MP 3500 that is displaying the message, "Add Toner ...Black". I have replaced the toner cartridge with a full one and when I close the toner cover it says, "loading toner.." but then just displays the same message, "Add Toner... Black". This occurrs no matter how many times I take out the full toner cartridge and put it back. Any suggestions?

SOURCE: Add Black Toner Msg.

Thanks Ricohman for the suggestion. Toner was original Ricoh cartridge and reinstalling it didn't help. I decided to tear the machine apart and discovered the auger for the black toner was stuck. I removed the auger, cleaned everything up and put the machine back together. Works great now.

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: add toner

replace toner supply unit. inside of the unit are 4 mylars to push toner towards hopper exit gate. looks like them mylars are ripped off and the toner is not getting to the dev unit

SOURCE: adding developer to the new ricoh aficio mp 1500

Are you a tech? I suspect not. You need to remove the drum unit, disassemble, separate the drum from the development unit. Remove cover of developer unit, add developer, reassemble, and run SP2214 to calibrate.
This is NOT a procedure to be performed by an end user...no disrespect intended.

SOURCE: Ricoh Aficio SP C410DN "set toner cartridge correctly"

It sounds like the part the toner bottle slides under to lock in place is broken. you could try and fold some paper and tape it to the toner to hold it down.