C654E Cyan devloper suck

[allan]

Re: C654E Cyan devloper suck

As some of the parts gets older the voltages goes up or down to compensate for age. Like the drum charge voltage and the development bias voltage.
If these voltage goes over or under to much it could cause the developer to transfer or dump.

The guys like to change the dip switches to make the over-life warnings not to show. I have seen how these machines gives trouble.
I do let these the parts go over but i prefer to reset the units.

There is very little information about aging compensation on these machines.
KM did put a warning out that the HV power supplies can only push out a certain amount of voltage/current and will cause trouble if parts goes for to long.

[swaggen]

Re: C654E Cyan devloper suck

As some of the parts gets older the voltages goes up or down to compensate for age. Like the drum charge voltage and the development bias voltage.
If these voltage goes over or under to much it could cause the developer to transfer or dump.

The guys like to change the dip switches to make the over-life warnings not to show. I have seen how these machines gives trouble.
I do let these the parts go over but i prefer to reset the units.

There is very little information about aging compensation on these machines.
KM did put a warning out that the HV power supplies can only push out a certain amount of voltage/current and will cause trouble if parts goes for to long.

How do you reset the units? New chips?

Like the drum charge voltage and the development bias voltage - The VDC for all IU is in the 230-375 range

Here is an example on the lines, New Cyan, Stabilizer resolves a bit. All other imagers have life. Can crap paper cause this as well? Actually setting the paper size to appropriate thick paper setting causes a less quality print. So bizarre.

Picture on the left has quality issues. The one on the right does not. Same sheet.

Dropbox - 20180312_091726.jpg

[allan]

Re: C654E Cyan devloper suck

Do a cyan half-tone at 125.

well you said that the unit still got life. So i was not thinking straight.

[swaggen]

Re: C654E Cyan devloper suck

Do a cyan half-tone at 125.

well you said that the unit still got life. So i was not thinking straight.

1) How do you reset when life bars are gone? Chip? tool ? or machine?

2) Per that picture I sent. I just now discovered that the drum roller toast and 60% life, probably due to old clumpy toner . I buy OEM form a reseller. I need to switch that.

3) Why would slowing the print down cause a wide strip problem in the cyan, ( low developer) but resolve on faster plain paper print? The paper is card stock.

[Phil B.]

Re: C654E Cyan devloper suck

I have 3 c654. We run them pretty hard. With no problems. Recently we have been printing lots of postcards/double sided with large pictures on them. The Cyan IU are failing at half life. They are maintained and all sensors cleaned. I do manual toner add as much as I can. I still feel like the toner hoppers are running a low. Gradients being done every day. What else could be causing the developer suck? Can I make any adjustments for increasing toner add? Firmware has been updated. I am at a loss and about to spend 50k on 3 C7000. Help

you didn't give us much to go on....

what is the life counts on the consumables? total page count? total years in service? what have you done except manual toner adds?