My ricoh afico MP C3000 is not loading toner is always show adding toner for the black development unit. some time show error code SC360

When you replace developer, make sure to clean the waste toner path on the PCU. Waste toner in combination with new developer causes trouble. After replacement of the developer use a piece of paper to block waste toner from falling into the DV-Unit. Then run SP2-801 and do process control.
Then make 100 copies and after that remove the piece of paper. A Ricoh tech told me that the amount of toner in the developer can be very high, so he always made 100 copies before removing the piece of paper. I'm doing this for a long time and I never had trouble with SC's related to TD-sensor.

The machine does not use the toner directly from the bottle, it goes thorught a developer chamber filled with developer powder. Then the toner is charged and can "jump" over to the latent image of the drum.
In this developer chamber, there are some small gears (2-3 tiny gears) that may be worn out. Some developer may have entered the "gearbox", and the deveoper powder is very abrasive.
The teeth of the gears will eventually stop to contact and mesh up. The internal parts of the developer changer stops to revolve, and there is no toner mixed with the developer.
You can see that there is a build up of toner, but it does not enter the developer unit. These gears have to be replaced, and I allways change the developer powder at the same time.



These gears must be replaced it they are worn. The image shows a brand new part that contains the gears.



This is the side of the developer unit where toner enters the developer unit. With defective gears, the developer unit can not pull toner inside of the unit, and the toner builds up in front of the unit.

The gears are cheap, but will often result in the need of new developer powder - and that is expensive.
If print quality does not have to be too good, one can use the old powder and save money. Some of the powder is lost during use, and leaks. There may be some dust in the developer too.
In order to get high quality several parts may need to be replaced.

It is quick and easy to change these gears, just a bit dirty job.

Take out the toner cartridge and shake it vigorously. When they sit for a long time the powder tends to clump.

sc 360 = black toner sensor error(in the development unit)

black TD sensor error ,
may be the machine pulled alot of toner
you can copy black paper to fix it
i am waiting your feedback

sc 302 - charge roller current leak. strip the drum unit (dmu) and clean the unit

The toner cartridges for the CL7000 have microchips embedded in them, so the machine knows if it's not a new cartridge. Was the cartridge you put in brand new? (And was it a genuine Ricoh cartridge?)

On those printers, the toner is pumped into a developer system and mixed with the developer before making the image. In the developer unit, the density is checked, so if it's not seeing the right mix there, one of three common problems could be causing this.

The more likely solution is to replace the yellow developer unit, which comes as a whole unit and just slides right in. That will reset your density levels and should correct the "load toner" error.

There is a spring and cushion mechanism that the toner cartridge sits on -- this mechanism can easily be popped out of place and cause problems loading the toner. Take out the yellow toner as well as one of the other colors, and see if the little black circular piece is sitting the same way for both colors. If not, just pop it back into place, using the second color as a guide.

The other likely possibility is that the yellow toner supply tube is clogged, but that doesn't happen very often. To test if it's clogged, take out the yellow toner cartridge and the yellow developer unit and turn the copier off. Use a vacuum to provide suction at one end of the tube (the toner end will be easier) and put your finger on the other end (the developer end) and see if you feel the vacuum's suction. If not, there is probably a clog somewhere in the line.

If there is no clog and you can feel the suction, you may have a bad toner supply motor.

As a side note, if you find the problem and fix it, you might still have to put a new yellow toner cartridge in to get the machine running because it will think the cartridge you already tried is empty.

Hope that helps!

remove all paper from the trays then turn machine off wait a few second then turn back on should reset then reload paper

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.

possible toner pump