Bizhub c451 Problme with cayn. Spots

[irakli3443]

How do I remove these spots?
And what is broken?

90.jpg91.jpg

[emujo]

Re: Bizhub c451 Problme with cayn. Spots

What are you copying? It looks like you have just closed the ADF and made a copy of the platen cover. Same junk on both sheets of paper. If this is the case then clean the white cover. Emujo

[irakli3443]

Re: Bizhub c451 Problme with cayn. Spots

What are you copying? It looks like you have just closed the ADF and made a copy of the platen cover. Same junk on both sheets of paper. If this is the case then clean the white cover. Emujo

it's from Ms Word print out

[irakli3443]

Re: Bizhub c451 Problme with cayn. Spots

somebody can help me how clean this spots

[Synaux]

Re: Bizhub c451 Problme with cayn. Spots

somebody can help me how clean this spots

Have you tried replacing the Cyan Imaging Unit?

[irakli3443]

Re: Bizhub c451 Problme with cayn. Spots

Have you tried replacing the Cyan Imaging Unit?

it's new. only 1k metter.

how i clean it or clean from programe

[allan]

Re: Bizhub c451 Problme with cayn. Spots

Do a half tone at value "0" for cyan that would be interesting to see if it appears on there. Also what is your TCR% ? Could be a bad contact.

[irakli3443]

Re: Bizhub c451 Problme with cayn. Spots

Do a half tone at value "0" for cyan that would be interesting to see if it appears on there. Also what is your TCR% ? Could be a bad contact.

i don't know haw make - half tone at value "0".
and where can i'll search TCR?

I'm new in this machine system. please write me how make that steps.

[allan]

Re: Bizhub c451 Problme with cayn. Spots

Go to service mode -> Test mode -> Halftone pattern -> use number keys to change value and select cyan load paper and press start . useful to IU condition.

Go to SM -> State confirmation -> Level History 1 (note if no print have been made TCR values would be 0) a good Toner to Carrier Ratio is 6.5% toner but from 4% to 8% is acceptable.

"0" is supposed to create no image and "255" max density.

[irakli3443]

Re: Bizhub c451 Problme with cayn. Spots

Go to service mode -> Test mode -> Halftone pattern -> use number keys to change value and select cyan load paper and press start . useful to IU condition.

Go to SM -> State confirmation -> Level History 1 (note if no print have been made TCR values would be 0) a good Toner to Carrier Ratio is 6.5% toner but from 4% to 8% is acceptable.

"0" is supposed to create no image and "255" max density.

TCR-C = 6.40

SKMBT_C45115012807190.jpg

[allan]

Re: Bizhub c451 Problme with cayn. Spots

Do a half tone at "0"

[irakli3443]

Re: Bizhub c451 Problme with cayn. Spots

Do a half tone at "0"

I did it. but when I scan. But after A scan, it will no longer be seen. there is little spots.

how can troubleshoot machine