C3070L - faded white diagonal stripes on thick paper, only on yellow color

[mariuscmr]

Hello,

I just bought a used C3070L but it's got some issues.

I attached two prints with 100% yellow (printed from CorelDraw), one 80 gsm (A3) and one 300 gsm (SRA3). The last one has some quality issues, as seen in the image. The width of the white stripes area is approx. 21 cm (the short edge of A4 paper). I interchanged the drum and the issue still persists. Could you give me any hint, please?

Thank you!

https://i.ibb.co/cNrX5vZ/image0.jpg (https://ibb.co/cNrX5vZ)

[blackcat4866]

It's probably not transferring all the yellow toner, probably primary transfer from the yellow drum to the primary transfer belt.

What are the yields on the primary transfer belt parts? Quite often, the primary transfer belt itself gets changed with the cleaner unit, but the remaining rollers in the primary transfer belt assembly are ignored/neglected.

Are you setting the correct media type?

Or the media is just too heavy. 300gsm is the absolute maximum weight, and I will not guarantee that every possible 300 gsm media can be used. =^..^=

[Woxner]

replace the yellow developer. you can try and tone up but it may be shot. i would start with new drums and dev for all colors. one can affect the other. make sre toner port is not clogged

[tsbservice]

+1 on yellow developer.

[lartis.aineias]

Konica has updated the troubleshooting guide for this problem!
you have to change the developer and change the dipsw that says troubleshooting!


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[mariuscmr]

Konica has updated the troubleshooting guide for this problem!
you have to change the developer and change the dipsw that says troubleshooting!


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Would you, please, help me with the DIPSW numbers? Or maybe a copy/paste with the issue from the guide?

Thank you!

[lartis.aineias]

Is in the page 3681!https://uploads.tapatalk-cdn.com/20210923/69015bf6cff2104f93938711234ec768.jpg

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