KMBH C452 - Trouble Code C-255B

[MRK23]

Re: KMBH C452 - Trouble Code C-255B

Check the toner density level in The State Confirm in the tech rep mode. Then select level history 1, toner density should alway be arount 7%...If it is below, enter image adjust and select manual add toner and select Y...after complete check level history again...now yellow should be at or just above 7%...If not, you may have a toner motor that has failed or a printer control board that is failing to turn on the motor. Just had to go through that process with the cyan and black toner motor not turning on for a C452 and it turning out to be the printer control board. A brand new machine out of the box...

[kizi57]

Re: KMBH C452 - Trouble Code C-255B

Hi all,

the problem came again, and this time it is very serious, there is also p-31 trouble code with my unit, there is black color shift on some of the prints, black color does not register on its position.

i heard it might be PRCB or DCPUneed to be changed, also M18. as i told you before i'm not KM Tech, i need help how to resolve this?

[Microoffice]

Re: KMBH C452 - Trouble Code C-255B

Hi all,

the problem came again, and this time it is very serious, there is also p-31 trouble code with my unit, there is black color shift on some of the prints, black color does not register on its position.

i heard it might be PRCB or DCPUneed to be changed, also M18. as i told you before i'm not KM Tech, i need help how to resolve this?

Hi Kizi

Please will you tell me if you managed to get this problem resolved? i have had the exact same problem for months now, can't find the solution. i would really appreciate your feedback!

Thanx!

[kizi57]

Re: KMBH C452 - Trouble Code C-255B

Hi Kizi

Please will you tell me if you managed to get this problem resolved? i have had the exact same problem for months now, can't find the solution. i would really appreciate your feedback!

Thanx!

I manage to solve the problem. I with my technician, open back side of the unit, then we clean the sensors. Look at your service manual will help you out...!

[Microoffice]

Re: KMBH C452 - Trouble Code C-255B

[QUOTE=kizi57;324346]I manage to solve the problem. I with my technician, open back side of the unit, then we clean the sensors. Look at your service manual will help you out...![/QUOTE

Did you replace anything? PSU? PRCB?

[kizi57]

Re: KMBH C452 - Trouble Code C-255B

[QUOTE=Microoffice;324348]

I manage to solve the problem. I with my technician, open back side of the unit, then we clean the sensors. Look at your service manual will help you out...![/QUOTE

Did you replace anything? PSU? PRCB?

nothing to replace... follow your service manual will help

[microofficesoultions]

Re: KMBH C452 - Trouble Code C-255B

[QUOTE=kizi57;324358]

nothing to replace... follow your service manual will help

My friend, I've been a senior technician for over 10 years now, I've gone through the manual on numerous occasions. Unfortuantely I'm the only technician in my company, otherwise I would've asked for assistance. I do understand that you are only the end user, and the easiest thing to say is "check the manual", but that is why we have this site, so that technicians and engineers can help and assist each other when all else fails and the manual doesn't help anymore.But thanx for trying to help, I really appreciate it. God bless!

[remati]

Re: KMBH C452 - Trouble Code C-255B

Hi

I have this trouble code in my bizhub c452, i open and close the lower front door, then the trouble dispappear.

What could be the couse of such a problem?

[Mr. Joshua]

Re: KMBH C452 - Trouble Code C-255B

For what it's worth, on my first and only experience with this code, it was the DCPU. I was able to get the machine to code more than 50% of the time as it was coming out of power save mode.

I replaced the DCPU and soon after the code returned. Now I'm nervous, thinking I've wasted a DCPU and I took a long time to make that call in the first place. Long story short, 1st replacement DCPU was at fault too, replacing it again fixed the problem.