TA620 adding toner none stop.

[jmaister]

The machine also says check toner cartridge. (not my actual call so i dont know the detail)

We are thinking along the line of toner sensor, toner supply motor, or DV? KDA has a 6030 case where the toner supply drive was replaced.

Has anyone else encountered one? what was the solution if you could kindly share?

thx.

[tmaged]

Set U152 to off.

[blackcat4866]

I had a brand new CS-8030 that would not add toner right out of the box. There was a deformation of the "D" shaped bore in the toner cartridge drive coupler. With the right side cover off, I could easily observe what was happening. The coupler would not spring back because it was too tight on the "D" shaft. Ten minutes with my jewelers files fixed that. I opened up the bore just enough to let it slide on the shaft. =^..^=

[Kyo fan]

I would try replacing developer unit 1st.

[JUAN C DLS]

Check toner sensor with simulation.if sensor is reading ok, then
Vacuum and clean the DV unit, then run DV set up again.

[Copyguy71]

The toner drive gear on this model has a one way bearing that will strip, causing the machine to constantly run searching for toner. I've had to replace the toner drive pack many times

[jmaister]

ding ding, turns out it was developer.

thx gents for all the inputs!