there is a little elbow that comes off the toner reservoir in the rear of the machine that will clog up. Replace rather than clean because it will return very quickly.
Maybe the hose has been squeezed by the transfer unit assembly after installation. There were so many holes on the back frame of the machine that techs sometimes mess up routing the hose to.
Aye! Cut the crap
I replace the nozzle when replacing pump and vacuum the supply hose did not do the fix.
Ok, all was great for a few days and right back to same error per customer. No magenta toner. Replaced tube, pump, elbow, rfid board and cartridge. All came to ready and showed full and now right back to empty! Eh?!?!?? Any ideas?
Well, this has happened to me
the toner stores it standing up, not lying down, and this causes the toner to turn rocks
total that obstructs the passage through the hose
so
I take out the hose, I blow it making sure the air goes well
back clean the sensor etc
In the toner cartridge, I open it, that is, I run the toner step, place a sheet of paper for the watering and turn the cartridge so that a bit of toner comes out, the one that is caked
and it worked well without changing pump or hose
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