[Error Code] C-2454 Errroe on bizhub c6500

[jzheld]

after I cleaned the machine got an error 2454 code, (I took, belt out, all drums, developers, coronas) I found few post about that error message, that it could be sensor, board or developer motor. How can I diagnose what has failed?

Thanks John

[Herrmann]

first at all, check, if the connector to the black developing unit is correctly set

[jzheld]

checked that, I tried to power the machine with the unplugged connector, I got another error

[JustManuals]

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[Herrmann]

ok, to isolate the error, you can interchange the dev unit per example bk against magenta (dont forget to tape the toner supply holes) and see, if the error persist.

[marlon29]

maybe you should try to swap the coronas, i have encountered that problem also...the cause is faulty charging corona of black.... or maybe it is under-toned or over-toned in the black developing unit

[Desert Rat]

Did you change the developer mix, drum or charger? Did you use a vacuum to clean the dev station? May be the sensor
took a static hit? Did you clean Potential sensor in the drum bay with a vacuum?
Was the copy quality ok when you started? If the black areas felt grainy, I would suspect that there is not
enough toner in the dev station.

DR

[jzheld]

just interchange the dev unit, error 2453, is that means the sensor is done on th e developer unit? I tried to change coronas, that didn't help. I didn't use vacuum when I cleaned it, just paper towes, it wasn't that bad, but prefer when it's cleane. The quality was good before that, it's just not a very busy season for me so trying to keap everything perectly running

[Desert Rat]

If you swapped the dev station with another unit like the magenta and the code comes up the same
only points to the magenta, then yes I would say the sensor is bad.
Before you change the sensor you might try running "L" detect for the black. Put it back in the
black bay and remove any tape. If it gets through "L" detect, run the auto gamma and check
the quality.

Good Luck

DR

[jzheld]

If you swapped the dev station with another unit like the magenta and the code comes up the same
only points to the magenta, then yes I would say the sensor is bad.
Before you change the sensor you might try running "L" detect for the black. Put it back in the
black bay and remove any tape. If it gets through "L" detect, run the auto gamma and check
the quality.

Good Luck

DR

Thanks for your help, I just not sure how to do "L" detect, and what it does

[Desert Rat]

"L" detect is the service program that looks at the sensor after changing the developer. It gets a
reading and compares that to a reference for ideal toner to mix ratio.
This is in the service manual. And you really should have one for this machine. I can't stress this
enough. Get the books...

As an example: I have noticed that the cyan color gets weak. The blue turns out purple and the
greens are more yellow. Sometimes I can feel a grainy texture in these area's. I will manually add
cyan toner to the mix. Just about two or three table spoons at a time and turn the gear in the
back with that tool from inside the toner hoppers. Make a copy, if it looks good, then I will
run the "L" detect program for the cyan and set a new operation point for a "correct" mix.

Besides if you replace the sensor the book sez to run the "L" detect program to set a new
operation point for that sensor. It may run without doing this, but the color may off.
You should also run the auto-gamma adjustment. It is just a program, you push a
few buttons to bring it up, then start it. It will adjust itself with this program.

Don't let it scare you,


DR

[SCHWARZ]

i think you can check the connector in the black developing unit and check the toner bottle black is installed. If the connector and toner bottle black installed correctly, and the machine still error code 2454, you can try i/o check 54-09. start i/o check until the value 130.

[owick]

Maybe this could help try to make some toner refresh mode, or else here a cowboy style i did this before it is effective by the way. Try to put a cup of toner mix it to the developer. A cup of that black toner is enough. After that try to toner refresh and auto gamma adjust settings again.

[jzheld]

Sorry was away for some time, I'm fixed the problem just changing the sensor cyan <-> black, it starts to work right away, still working great, I was just testing every single option and that worked for me. Thank you all for your help.

[glgprint]

Re: C-2454 Errroe on bizhub c6500

i am getting this same error. i have 2 of these machines and swapped the entire developing slide out with the other, and i still get this error. the "L"detect errors on me, along with the auto gamma setup. also when i turn on the automatic developer charge to turn the k auger it errors out, but not on the other colors. i swapped developer motors and drum motors to no avail. also swopped PCB and got nowhere. The older machine we have been running for about four years, and I know that all the parts I am pulling from it are good and operational, but are not making a difference when I put them into the Konica that is throwing the error. I am beginning to think there is either something wrong with the firmware, or something wrong with wiring somewhere...any ideas? Thank you!