Bizhub c652 TCR level Black to High C-2558

[selmila]

hi.

C 652 black print is poor, the TCR level is 14.20 which means high toner density detection in developer but there is no toner in the developer! i have changer the developer but the machine get stuck at C 2558!

[habik]

hi.

C 652 black print is poor, the TCR level is 14.20 which means high toner density detection in developer but there is no toner in the developer! i have changer the developer but the machine get stuck at C 2558!

I presume there is toner in bottle and hopper and it is supplied to the Dev.

If it is then:

Print 20x A3 K halftone at full 255 gradient and then "teach" the TCR sensor in Dev unit that it has incorrect TCR level due to being in New environment. To do it select Manual toner add in service mode.

Sent from my Mi A1 using Tapatalk

[Zesti]

Have you changed only developer on developer unit?
If there is bad or no TCR sensor connection it give high TCR value.
Check your TCR sensor connection.

[selmila]

I presume there is toner in bottle and hopper and it is supplied to the Dev.

If it is then:

Print 20x A3 K halftone at full 255 gradient and then "teach" the TCR sensor in Dev unit that it has incorrect TCR level due to being in New environment. To do it select Manual toner add in service mode.

Sent from my Mi A1 using Tapatalk

hi.

yes the toner bottle and the hopper is good.

i cant print any test patters due to machine stuckon C 2558.

[selmila]

Have you changed only developer on developer unit?
If there is bad or no TCR sensor connection it give high TCR value.
Check your TCR sensor connection.

hi zest.
The TCR sensor connection is good.

[copier tech]

Have you changed only developer on developer unit?
If there is bad or no TCR sensor connection it give high TCR value.
Check your TCR sensor connection.

This is an important question "Have you changed only developer or developer unit?"

[selmila]

This is an important question "Have you changed only developer or developer unit?"

only the Developer is changed

[Zesti]

only the Developer is changed

Which developer you put in, also what kind of toner you are using, generic or original. I have a bad feeling about your toner and developer.

[copier tech]

only the Developer is changed

So that is not an OEM part.

Fit a genuine KM dev unit that will resolve your issue.

[selmila]

So that is not an OEM part.

Fit a genuine KM dev unit that will resolve your issue.

unit and toner is original and 40% life done