Konica minota c650 Printing balck baground copies

All it takes is one tiny shred to trip the jam sensor, check again.

What konica machine do you have ...... usually 9401 error is to do with LED lighting failure

While printing as image, this happens.
Make sure that the option "print as gray scale" is not selected.

Reset the drum and developer counters to zero, the replace the developer, and run the required TCR adjustment. Do NOT reset the counters then think you don't have to replace the drum and developer, because the copier uses the counters to determine voltages for certain parts inside the machine, reset counter and not replace the parts the copier thinks they are new when in fact they are old you get codes and bad copies.,

Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/normanj_7893313f0751935f

Self Help Product Support Konica Minolta Business Solutions Inc

try this

Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/normanj_7893313f0751935f

scanner home position code. Check the scanner located under the big glass. the scanner also has the exposure lamp. the bright light.

Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/normanj_7893313f0751935f

Enter in the user menu and select blak/white or select in your computer before printing grayscale.

are you printing from Doc feeder or glas?? if from feeder then try to make a copy from the glass, does it still do it? yes problem is with drum.
No? problem is with the small scanning glass to the left, look carefully see if any spots or lines on the 1inch glas --- clean it

pls can i join

look in applications (mainscreen) and I thinkit's under stamps/overlays. You might even be able to choose what page number to start with