Bizhub C452 black image issue

[konica7022]

hi bizhub c452 suddenly started printing like this, some one suggested that its is not getting black toner
i check toner is enough and tried to pour some in the drum manually but still get the same result94D4E0A7.jpg after cleaning i get this white lines at the top as well



ALSO in need a rebuild instructions for Color IU for bizhub c452 if any one can help

[blackcat4866]

Re: Bizhub C452 black image issue

If this was a sky shot, your developer is dead. Start with a DV612K black developing unit. =^..^=

[konica7022]

Re: Bizhub C452 black image issue

If this was a sky shot, your developer is dead. Start with a DV612K black developing unit. =^..^=

it has 40% life left how can it all of a sudden die? :/

[blackcat4866]

Re: Bizhub C452 black image issue

Are you going to let that yield indicator dictate when you will solve this quality issue? You will probably never get to 0% remaining. The images will go completely blank, or give Add Toner indications long before you get to 0% remaining. This might be one of those opportunities for you to think for yourself. =^..^=

[allan]

Re: Bizhub C452 black image issue

Charge issue?
Is that a sky shot or a print?

[konica7022]

Re: Bizhub C452 black image issue

Charge issue?
Is that a sky shot or a print?

its a sky shot(more like a ceiling shot)


ok blackcat4866 i will swap the dev unit and post again


What about the Color IU rebuild instructions?

[konica7022]

Re: Bizhub C452 black image issue

ok changed the DEV, its working fine now

but the black print is coming Tooooooo Dark?


also some times the machine gives the error c 2258

i checked all the waste toner motor connections and greased all the gears but the error still comes some times

[blackcat4866]

Re: Bizhub C452 black image issue

Did you clean anything? Did you do a stabilization and gradation? The manual covers this nicely. =^..^=

[konica7022]

Re: Bizhub C452 black image issue

Did you clean anything? Did you do a stabilization and gradation? The manual covers this nicely. =^..^=

yes i did gradation only wanted to do stabilization but got busy, will do that today machine is printing fine

except for following error


error c2558 apears some time, could this be the reason the Dev unit got damaged?

[EarthKmTech]

Re: Bizhub C452 black image issue

was that a new developing unit you installed or a second hand one ?

tcr sensor calibration is only performed on a new unit.

[konica7022]

Re: Bizhub C452 black image issue

was that a new developing unit you installed or a second hand one ?

tcr sensor calibration is only performed on a new unit.

it was old one, swapped it from another machine, after few prints it gives me c 2558 error like 2/3 times a day


what i read in the manual TCR calibration is done every time you open and close the Front Door

[allan]

Re: Bizhub C452 black image issue

No TCR is only initialized once by reading(popping) the new chip. TCR is monitored constantly.
If you are a ninja you can fix it by adding or removing toner.
Every TCR sensor is a little different(tolerance) that is why new developer is factory mixed to exactly 6.5%.

[konica7022]

Re: Bizhub C452 black image issue

Nailed IT

The developer i used swapped was from C452 into C552 machine, Since it was old so timing/speed difference with the toner Gave me error Code C 2558

which is now fixed i as put the Orignal DV unit back into C552 and poured the Developer of C452 in to DV unite of C552

All works fine, but after 3-4 days use the black ink starts to fade away again

i intalled new black toner, but still no use, filltered and added more developer(used one) works for 3 days and Fades away again!

[copier tech]

Re: Bizhub C452 black image issue

You have answered your own question, Fit A NEW developer unit & stop messing around topping up old units, you have no way of knowing how much to pour in!
A new dev unit will run way past 500k if the machine is looked after.

I have had a couple of failed PRCB boards fail not driving the toner supply motor.

A0P0H00102 PWB Assenbly (PWB-MC ASSY)

[konica7022]

Re: Bizhub C452 black image issue

You have answered your own question, Fit A NEW developer unit & stop messing around topping up old units, you have no way of knowing how much to pour in!
A new dev unit will run way past 500k if the machine is looked after.

I have had a couple of failed PRCB boards fail not driving the toner supply motor.

A0P0H00102 PWB Assenbly (PWB-MC ASSY)

I manually added the toner to the DV and it is working totally fine, which means it is the toner motor issue or the board

how shell i test the motor to make sure its motor not the board?