Konica Minolta C250

[Avskrap]

Re: Konica Minolta C250

as I stated above, the developer needs to be replaced.
the 2557 error is an issue with the developer now.
you have spent so much time pissing around with toner and a new drum that you are throwing money down the drain.
the developer needs to be replaced and the F8 process needs to be run.
get the service manual and read through it.
these machines are notorious for this kind of issue.
I spent may years servicing these machines and had all of my new techs cut their teeth on them.
replace the developer and quit throwing good money after bad.

Well, he says it's a C250. No separate developer, simply an imaging unit.

[Shadow]

Re: Konica Minolta C250

as I stated above, the developer needs to be replaced.
the 2557 error is an issue with the developer now.
you have spent so much time pissing around with toner and a new drum that you are throwing money down the drain.
the developer needs to be replaced and the F8 process needs to be run.
get the service manual and read through it.
these machines are notorious for this kind of issue.
I spent may years servicing these machines and had all of my new techs cut their teeth on them.
replace the developer and quit throwing good money after bad.

[nmilisic]

Re: Konica Minolta C250

I will have to leave that up to you! It is simply a case of LOOKING to see if the drum turns! Are you a tech at all? I suggest you call one if you need to be advised how to tell if a component is turning! I will now withdraw from this post as I cannot look for you..sorry.

I'm tech for Ricoh b/w machines. This KM c250 is in local school, and I was tried to help them.
New K IU and new toner and c2557 still there...

Any ideas?

[minimerlin]

Re: Konica Minolta C250

No I'm not sure that K IU is turning, please advise me how to check?
Thanks.

I will have to leave that up to you! It is simply a case of LOOKING to see if the drum turns! Are you a tech at all? I suggest you call one if you need to be advised how to tell if a component is turning! I will now withdraw from this post as I cannot look for you..sorry.

[nmilisic]

Re: Konica Minolta C250

Have you made sure that the K Image Unit is actually turning?

No I'm not sure that K IU is turning, please advise me how to check?
Thanks.

[minimerlin]

Re: Konica Minolta C250

Today I tried new black IU, machine show c2557 again.. Also, machine show message that I need new black toner but when I check that toner cartridge on another c250 - everything work perfect?

Have you made sure that the K Image Unit is actually turning?

[nmilisic]

Re: Konica Minolta C250

Today I tried new black IU, machine show c2557 again.. Also, machine show message that I need new black toner but when I check that toner cartridge on another c250 - everything work perfect?

[skazic]

Re: Konica Minolta C250

C2557: Abnormally low toner density detected Black TCR Sensor..........

This service manual says, but is probably missing the black toner Replace the toner,
go into service mode and turn the toner dispensing

[Shadow]

Re: Konica Minolta C250

where did you read this information?
the manual says to open and close the front door.
you need to replace the developer in this machine.
if you are an authorized service tech, you will have the correct code to access the service mode.

[nmilisic]

Error code: c2557..


I read that I should reset this code in tech rep mode, but when I go with: stop 00 stop 01, than "00000000" and after that "end" - but there is no "end" on display?

Please, help If anyone know how to enter tech rep mode.
Thanks