c351 cyan problems - anyone help me?

[Guest]

attached is a scan of a solid cyan print made from my c351 machine

any ideas?

[laserman06]

If it is only doing it on Cyan, I would replace the Cyan Image unit.

[cobiray]

You might try ewmoving the unit, shaking the unit vigorously and rotate the unit the by hand. If you've got no luck replace the unit. I've had some light duty units give odd image quality due to "settling" in the units.

[redime]

Order a new cyan IU

[ck1]

you developer no enoght.change it.If still come this problem check the toner supply section ,maybe toner can't go in dev unit

[DadO]

If u have one cyan unit u replaced from c252 or 352 then take the developer form it and poor it in the bad unit but first get acces to the magnetic roller and rotate it to see is the developer in question

[redime]

If u have one cyan unit u replaced from c252 or 352 then take the developer form it and poor it in the bad unit but first get acces to the magnetic roller and rotate it to see is the developer in question

This is a terrible idea, do not try it.

If you have any understanding of how the copy process actually works and all the things that go on behind the scenes, mixing developers from USED image units may work in the short term but is a terrible idea as your actual fix.

[redime]

Also, hit Utility/Counter and check the Consumable Life of all your image units. How many bars are left (this is a count up system, not count down... so the bars fill in as they get older)

Great way to test your image units is by going into Tech Rep mode, under Test Mode you will see Lattice Pattern. Select it, then select "Reverse" and print out C M Y K in both 255 density as well as 122 density.

If your Cyan is shot, chances are your other colors will quickly follow.

Part Number Desc. Yield
4047201 IU410 Black 100,000

4047501 IU310 Yellow 50,000/pc
4047601 IU310 Magenta 50,000/pc

4047701 IU310 Cyan 50,000/pc

[DadO]

I agree redime 100% but when ur missing "few parts" and cant wait till KM send it u have to improvise.

I did that and got 35K copies more on c 252 since machine "eated up" developer on 10K and costumer refused to pay another IU since this was second IU that i changed (first one stoped on 12K) on a brand new machine and fix was firmware.

So its working

[bozeman]

cyan

I have seen this many many times. This happens in high altitude locations mostly. There is a modification to the toner hopper that is replacing the sponge and slider on hopper above toner inlet to i.u. Also, there is a procedure for modifying the i.u. itself, gapping the doctor blade. Let me know if you need any further information.