Lighter stripe on edge MP C2500

[vlada]

Hello, i have lighter stripe on edge on my MP C2500. It is only in yellow, but developer and drum unit are new Any idea please what can i change or clean?
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[Richariri]

Re: Lighter stripe on edge MP C2500

check your laser unit. Specifically the polygon motor and the mirrored edges of that hexagonal bit (technical term there).
I've had machines with a small amount of dust on one edge of that mirror which causes a pale edge on prints.

also make sure it's not a fault on the optics.

[Zeldaman]

Re: Lighter stripe on edge MP C2500

Hi there!
Richariri is 100% right + check the mechanic of the laser-shutter-assy + firmware-update.
Greetings...

[slimslob]

Re: Lighter stripe on edge MP C2500

Use the tool mounted in the door and clean the shield glass for each color. Also check that the shutter is not sticking on one side.

[ruben]

Re: Lighter stripe on edge MP C2500

Remove the shutter from the laser and throw it in the bin, it causes too many problems. (Don't remove the arms it is attached to.)

[vlada]

Re: Lighter stripe on edge MP C2500

Thank you.

I tried all, optics path is clean, mirrors are clear, hexagon is clean, shutter was removed. But situation are same.

Still missing about 50% yellow on one edge. Is any other chance to clean?

[Iowatech]

Re: Lighter stripe on edge MP C2500

Take a look at the yellow developer roller and make sure the developer coating is the same across the entire width of the roller. If not, it is likely the developer unit was damaged by improper handling and needs to be replaced. Hopefully you can get the developer unit replaced under the warrantee if that's the case. (Although, this only works if the examples you shared came out of the machine long edge first, otherwise this is a stupid waste of time. If so, sorry.)

[vlada]

Re: Lighter stripe on edge MP C2500

yes, paper out the long edge first (A4), ok, i will try turn developer valve by 180 degree, and if the error will be on opposite side, i must replace it thank you

[L-IQ-uid toner]

Re: Lighter stripe on edge MP C2500

Check transfer roller for yellow color inside ITB unit.

[Smee]

Re: Lighter stripe on edge MP C2500

When the yellow PCU was replaced, did you re-fit the brass bushing at the rear that holds it together?

Ive seen something very similar that was caused when the tech threw it away.