Konica c284 copies with problems

[enricocopyline]

Good morning
I have a konica c284 that works very well in printing but in copy of from problems and it copies me as in attached images. bottom in copies
I have already replaced the main board but I have not solved the problem
What could it be?


SKMBT_C28420071310430_0001.jpgSKMBT_C28420071310430_0002.jpgSKMBT_C28420071310430_0003.jpg

[copier tech]

Good morning
I have a konica c284 that works very well in printing but in copy of from problems and it copies me as in attached images. bottom in copies
I have already replaced the main board but I have not solved the problem
What could it be?


SKMBT_C28420071310430_0001.jpgSKMBT_C28420071310430_0002.jpgSKMBT_C28420071310430_0003.jpg

What exactly is the issue, it's not easy to see from your samples?

But you replaced the main board for a quality fault is that right?

[enricocopyline]

What exactly is the issue, it's not easy to see from your samples?

But you replaced the main board for a quality fault is that right?

unfortunately you do not see it but it is the bottom of the whole copy and bad photocopy

[copier tech]

unfortunately you do not see it but it is the bottom of the whole copy and bad photocopy

Post a sample of the gradation test prints in CE mode.

It maybe the print quality is poor but when you take a copy makes it look worse.

[Toxic]

Bit strange to replace board because quality issue...
Did you check drums,developing,tr.belt, clean scanner...etc before replace main board?
And it is never good to test copy this machine internal test print.

[enricocopyline]

Post a sample of the gradation test prints in CE mode.

It maybe the print quality is poor but when you take a copy makes it look worse.

gradatione test it's ok

perhaps the problem is better seen here

GRAD.pdfPROBLEM.pdf

[copier tech]

gradatione test it's ok

perhaps the problem is better seen here

GRAD.pdfPROBLEM.pdf

OK so the gradations look good.

Are the test pattens BOTH a copy?

[Phil B.]

gradatione test it's ok

perhaps the problem is better seen here

GRAD.pdfPROBLEM.pdf

ok i'll ask the question that you failed to answer..

why replace a board when it is clearly a hardware issue?

look at the ITB and drums.

what are the page counts on supplies/PM parts?

[enricocopyline]

I changed the card to make an attempt to understand what it could have been
itb and drums are good
if they weren't good you could see some problems even in the press
and not just in copy and scan

test pattern are print.

the problem does it even by doing a scan it is not a consumable problem.

[emujo2]

PCQ can be caused by electronics..Scanner and printer boards can contribute..However, the fact that he wants us to help him based on PDFs that, according to him, don't show the problem, is what I can't get past. E