Km C2070 Not printing on 200-300gsm coated paper

[S2DZ]

Hello,
We purchased a second-hand km C2070. It only prints normal plain paper 74-80gsm and prints very well. But any other paper > 80gsm gets jammed (we are using bypass tray). This is our first press series machine. We reviewed all the configurations, but we can't see anything wrong.
The machine is not also getting paper from LU-202XL unit (tray 3)
And finally, we want to know how to reset the CE Password to access the Service Mode.
Please help me.

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[wiets]

For machines that already use LU, paper above 100 grams you must use LU

but if you can't pull the paper, you have to check the rubber roller in the LU or in the bypass, use a wet tissue containing alcohol to clean it

service mode :
utitily
Stop 00
Stop 01

[S2DZ]

For machines that already use LU, paper above 100 grams you must use LU

but if you can't pull the paper, you have to check the rubber roller in the LU or in the bypass, use a wet tissue containing alcohol to clean it

service mode :
utitily
Stop 00
Stop 01

Thank you for your attention. I will check in deep Both the LU and bypass.
My problem with the service mode is the CE Password. The default was changed and seems that nobody remembers the last one.
So we need to force a reset.

[S2DZ]

I cleaned the rubber rollers on bypass tray and now we can print on 300gsm paper.
The LU does not recognize the presence of the paper, but the printer recognizes the unit.

[Ziggy]

Is the LU lifting?

[S2DZ]

Is the LU lifting?

Not lifting. The plate is down.

[Kenny]

we had this issue with a C3070L with a LU202, the lifting issue was down to the paper feed sensors 'A85CM55600

[Ziggy]

Not lifting. The plate is down.

Turn machine off and unplug it. Then check all the connectors going from the LU to the machine. Make sure you don't have any bent pins

[S2DZ]

Ok. I will unplug and check everything(cables, sensors...) carefully.

[wiets]

Not lifting. The plate is down.

You check the iron cable on the side of the LU body, usually the plate holding the iron cable is damaged

[S2DZ]

Hello,
I checked everything, found and solved the problem. The upper front sensor actuator was broken.
With a little bit of glue i fixed it and now is working fine.

Thank you all for your attention and support 🙏.

WhatsApp Image 2025-02-19 at 11.54.05_f8947509.jpg

[tulintron]

Thank you for your attention. I will check in deep Both the LU and bypass.
My problem with the service mode is the CE Password. The default was changed and seems that nobody remembers the last one.
So we need to force a reset.

Hello. Good morning. How are you? I hope you are well.

If you need to reset the default CE Authentication password, I can do it for you. Send me a private message and we can arrange it.

[S2DZ]

Hello. Good morning. How are you? I hope you are well.

If you need to reset the default CE Authentication password, I can do it for you. Send me a private message and we can arrange it.

Hi,
The first owner finally found the CE Authentication password. But if needed I will contact you in private.