C250i Color registration error P-21

[blinxwap]

I have a color registration error p-21 error on a c250i that is basically still new have cleaned idc sensors , removed transfer belt cleaned transfer belt cleaning section when ever the machine warms up or i do image stabilization , either it gives p-21 error of drum unit/developing unit magenta error any suggestions also the machine used 67% lofe of the drum unit k but it has n line on the drum unit k all the other drums are above 90% the machine doesnt even have about 100k copies on it

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[copier tech]

Re: C250i Color registration error P-21

I have a color registration error p-21 error on a c250i that is basically still new have cleaned idc sensors , removed transfer belt cleaned transfer belt cleaning section when ever the machine warms up or i do image stabilization , either it gives p-21 error of drum unit/developing unit magenta error any suggestions also the machine used 67% lofe of the drum unit k but it has n line on the drum unit k all the other drums are above 90% the machine doesnt even have about 100k copies on it

Sent from my SM-A505F using Tapatalk

Check the magenta dev unit toner levels, should be around 6% any lower & you will get a P21 warning.

As with all new KMs update the firmware to the latest version (last time I checked B6) this enables a developer unit agitation mode this could be your issue.

[Max]

Re: C250i Color registration error P-21

What are the test k c y m sheets look like? If feint, uneven or lined you will get p 21.

[blinxwap]

Re: C250i Color registration error P-21

What are the test k c y m sheets look like? If feint, uneven or lined you will get p 21.

Halftones has a black line on all copies cause drum unit k needs to be replaced sheets colors looks good

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[tsbservice]

Re: C250i Color registration error P-21

I have a color registration error p-21 error on a c250i that is basically still new have cleaned idc sensors , removed transfer belt cleaned transfer belt cleaning section when ever the machine warms up or i do image stabilization , either it gives p-21 error of drum unit/developing unit magenta error any suggestions also the machine used 67% lofe of the drum unit k but it has n line on the drum unit k all the other drums are above 90% the machine doesnt even have about 100k copies on it

Sent from my SM-A505F using Tapatalk

Post machine counter list, PM counter list and CMYK halftone pattern. I once or twice saw tech is posting MML list as PDF file. It will have all info needed. Simply the best way for other tech to check for machine anomalies.

[allan]

Re: C250i Color registration error P-21

Like mentioned print CMYK half-tones at 150 and post that. If there is poor image creation in the area where the sensors read the patches registration can fail.
Most of the time there is a P-code for the color causing the failure. P6 to P9.

If its only P21 with no other code then its not complaining about density. For that it needs to find the patch first.


How is the print if you do a demo page? Is the registration way out of wack?

[tsbservice]

Re: C250i Color registration error P-21

I have a color registration error p-21 error on a c250i that is basically still new have cleaned idc sensors , removed transfer belt cleaned transfer belt cleaning section when ever the machine warms up or i do image stabilization , either it gives p-21 error of drum unit/developing unit magenta error any suggestions also the machine used 67% lofe of the drum unit k but it has n line on the drum unit k all the other drums are above 90% the machine doesnt even have about 100k copies on it

Sent from my SM-A505F using Tapatalk

Also what exactly means "drum unit/developing unit magenta error"?
What if you swap M with let's say C drum?

[Bix]

Re: C250i Color registration error P-21

Hi, some have had problems with the drum chip. I had it at some stage of installation. simply remove and replace the drum to fix. But maybe I don't understand your problem well.

[Max]

Re: C250i Color registration error P-21

Halftones has a black line on all copies cause drum unit k needs to be replaced sheets colors looks good

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Good place to start.

[REGSIS]

Re: C250i Color registration error P-21

I have a color registration error p-21 error on a c250i that is basically still new have cleaned idc sensors , removed transfer belt cleaned transfer belt cleaning section when ever the machine warms up or i do image stabilization , either it gives p-21 error of drum unit/developing unit magenta error any suggestions also the machine used 67% lofe of the drum unit k but it has n line on the drum unit k all the other drums are above 90% the machine doesnt even have about 100k copies on it

Sent from my SM-A505F using Tapatalk

If you want to save and continue to use that drum unit K, you may try to take it apart.
My best guess is that primary charge roller is creating a problem. Drum and drum cleaner should be ok.
You can clean the cleaner just in case. Don't clean the drum especialy if there's nothing visible on surface.
Clean primary charge roller with alcohol.
PCR has its own cleaner.
I think that the best way to clean it is to soak it in cold water and dry.

I never tried this! Just my thoughts!
The safest way is to replace K drum, and do the above on your free time for experimental purposes to see if it works and how long it will last afterwards.

[tsbservice]

Re: C250i Color registration error P-21

If you want to save and continue to use that drum unit K, you may try to take it apart.
My best guess is that primary charge roller is creating a problem. Drum and drum cleaner should be ok.
You can clean the cleaner just in case. Don't clean the drum especialy if there's nothing visible on surface.
Clean primary charge roller with alcohol.
PCR has its own cleaner.
I think that the best way to clean it is to soak it in cold water and dry.

I never tried this! Just my thoughts!
The safest way is to replace K drum, and do the above on your free time for experimental purposes to see if it works and how long it will last afterwards.

I experimented on 8 series PCRs and that won't work. I cleaned them they look good but once the lines come on page it's game over PCR is shot. I even cut the rubber with a knife to see if steel core is rusted or something to no avail. Cleaning works well on many small printers SOFT PCRs but this rubber on 8 series won't .

[blackcat4866]

Re: C250i Color registration error P-21

...
Clean primary charge roller with alcohol.
PCR has its own cleaner.
I think that the best way to clean it is to soak it in cold water and dry.

I never tried this! Just my thoughts! ...

I think you'll find that if you clean the primary charge roller with anything you'll get very bad copies, much worse than when you started. I have not had success with cleaning Konica Minolta primary charge rollers.

Keep in mind that the yield on the C250i drum is 120K, 91% of yield. =^..^=

[allan]

Re: C250i Color registration error P-21

I think you'll find that if you clean the primary charge roller with anything you'll get very bad copies, much worse than when you started. I have not had success with cleaning Konica Minolta primary charge rollers.

Keep in mind that the yield on the C250i drum is 120K, 91% of yield. =^..^=

Used to clean charge rollers with nothing but running water and a soft cloth.
The older Ricoh machines saliva and cloth was the way.

[tsbservice]

Re: C250i Color registration error P-21

I have a color registration error p-21 error on a c250i that is basically still new have cleaned idc sensors , removed transfer belt cleaned transfer belt cleaning section when ever the machine warms up or i do image stabilization , either it gives p-21 error of drum unit/developing unit magenta error any suggestions also the machine used 67% lofe of the drum unit k but it has n line on the drum unit k all the other drums are above 90% the machine doesnt even have about 100k copies on it

Sent from my SM-A505F using Tapatalk

Wait, is this machine C250i OR C250?

[blackcat4866]

Re: C250i Color registration error P-21

Wait, is this machine C250i OR C250?

Well it can't be a C250 if it has a charge roller. =^..^=