C450i eat toner

[jwai]

Change the drum unit... from Y to C or M to test if problem stays on Y or moves. Or just change it. Are you using original toner?

i changed them for test , same result. i used genuine toner.
this day i poured a bit toner and got auto replenishing with blocked the ph window, after the tcr raised to 6.8%, i check the drum it got clean.
however the tcr of c and m dropped to 0.0x%, took the manual add toner the ratio raised to 5.x%.
got a bird test print the background have a slightly pink, checked the transfer belt there had a m toner coating, and the machine showed p5 p6 p8.

[tsbservice]

Check back of machine for blocked/clogged with toner air ports. Don't remember if this C450i has toner filter at the back of machine check it could be full of toner also.

[jwai]

Check back of machine for blocked/clogged with toner air ports. Don't remember if this C450i has toner filter at the back of machine check it could be full of toner also.

yes, i had cleaned this filter, dirt with Y toner.
after cleaning the Y section seems better, just hard to understand why both C and M developing section have problems after the Y toner replenishing.

[Gift]

Had a similar issue because of a faulty hv board - even the developer was drained in that case.
On out first attempt we just swaspped the dev unit but the issue re-occured and then we
swapped both the dev unit and hv-board.

I think it was on the 8 series but also a brand new unit.

[jwai]

Had a similar issue because of a faulty hv board - even the developer was drained in that case.
On out first attempt we just swaspped the dev unit but the issue re-occured and then we
swapped both the dev unit and hv-board.

I think it was on the 8 series but also a brand new unit.

For me it's the first time I visited on console machine.
The Y toner got empty only 3 days and a bit thousand text and lines printout.

[thanakon1995]

I found the C450i Toner(K) running out faster than usual.
I tested the Drum(K) DV(K), any advice for me?
I tested the upgraded F/W to AA2J0Y0-F000-G00-J9.
I have found an abnormal TCR(K) value, is there anything else I need to check?
please help me at

[Haaland]

I had a similar problem with a C250i, tried drum, dev, HV-board, and last try was "print head skew adj." from service-mode.
I planed to replace the laser but the adjustment seems to have fixed it.
If its the same problem as this machine, check if machine is doing color stabilization way to often from the management list, mine had more stabilizations then TC, while our demo-machine had 24 when the TC was about 500.

[tsbservice]

I had a similar problem with a C250i, tried drum, dev, HV-board, and last try was "print head skew adj." from service-mode.
I planed to replace the laser but the adjustment seems to have fixed it.
If its the same problem as this machine, check if machine is doing color stabilization way to often from the management list, mine had more stabilizations then TC, while our demo-machine had 24 when the TC was about 500.

Check out temp/humidity sensor readings.