Screen reads toner is out when its not - Ricoh Aficio 1232C Color Copier

Toner not compatible with the machine.

If this is a third party toner they it is likley that the toner's chip is faulty. Your best bet is to contact the company that sold you the toner and get a replacement sent to you. If this is OEM toner then have them send you a new toner as well but if the new toner keeps failing then it could be time for a firmware update for the printer or just a fault with the printers main board.

Remove the entire imaging unit
Unscrew the cap on the right side of the unit 1 chrome screw
Dump the waste toner out....very messy, do it outdoors
Replace the cap
Reinstall imaging unit
Power off and on again

The toner auger that feeds the toner is bound up inside of the developer unit. It is a long spring.

In most cases you need to use a can of air and blow out all around your toner and drum area. Then used it inside the printer to clean out the toner inside of the machine. If this doesnt work take out all 4 anc clean everything very well.

I have a brother mfc 7840w

I first used the electrical tape trick and that worked for a while. Then got the toner low message again. I then tried the *00 trick, which works as follows:

1. lift lid and open front cover
2. press clear/back. "Replace Drum?" will appear on the screen.
3. Press "*00" it will then read accepted and the toner low error (End of Toner Life) should go away.
4. close it all up and your done.

F26-3 at power up.
Solution:
CAUSE: The toner supply unit (p/n 26WA-3200) is bound up preventing toner from being added to the developer unit.

SOLUTION: Replace the toner supply unit.

Are you using third party toner, or OEM? Toner cart has small chip on it that the machine reads and is being told not OEM toner

Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/normanj_7893313f0751935f

There are two contact on the right wall off the printer cartridge chamber area. They can get pushed in causing the printer cartridge to not read correctly. Take a small Flathead screwdriver and bend them up so the cartridge ink level can be read.

Behind the little container for the waste toner there is a sensor that senses whether the toner basket is full or not. If the sensor itself is dirty, it can give a false reading. First try cleaning out the area under the container to see if the switch works. Also make sure the container is clean, because the sensor works by sight, so if it looks full because it's dirty, it will give a false reading. I have heard of people disabling that sensor in various ways, but that can get dangerous to the printer. I can't recall the details on that exact model, but I believe there is a diagnostic of some sort that can test that sensor to make sure it works right to begin with.