scratches on FR 570

[surviving]

hello i got these lines all over the picture it's happen 1 time each 20 or 30 prints i cleaned the métalic belt and the right one on the subscan but it still happened can somebody got the same problem thank's i attached 2 pictures 

[surviving]

hello i need help urgently anybody have a solution?

 

[surviving]

nobody know?????

[Magenta]

we need more information what is the direction of paper travel? I suspect the line is across the width? if so the paper is stop starting so cleaning the belt was the first step. Its a repeated  consistent banding line  so it could be the subscan roller bearings, remove the belt with a gloved hand and spin the rollers listen for rough bearings or sticky points it doesn't take a lot to band.

If the lines are down the print travel look at the racks on entry to P1 and P2 for any build up that can bruise the emulsion causing Plus density lines, hard to see from the one  sample

[surviving]

thank's magenta the lines are width it's not a chemical scratches i removed the belt and cleaned but there's some scratches on the belt "the aluminium belt"i ll attach the picture of the belt tommorow 

[surviving]

finally i swaped another subscan that work well but i still have this problem i am wondering if AOM can do that i am confused  every advice will be welcome thank's

[Trev Taylor]

Yes AOMs can cause that.  Laser wont create it and the subscan can do that also on the bearings.  But you've changed the subscan.  Anything else mechanically would make it jam infrequently.  ie distribution section, distribution entrance etc.

[surviving]

ill swap an AOM to be fixed and i ll tell more of that prob

 

[nanotron]

Hi 

Good day my brother. this problem is not from any mechanical part. if you look closely at the dots you can notice they are made of pixel dots this mean 

It is a digital decoding failure do to bad memory. then from the image transfer route the only digital part is the gep23 inside the image controller. this board is the video board for 550 series

Used for converting digital image into analogue ready to be amplified by the aom driver.

From this you have two thing to do.

1. remove it and clean it up using any electronic board cleaner spray, like jersy50 then try

2. simply exchange with a good working one and enjoy.

Be sure I have solve this problem like that several times.

[surviving]

solved just change the RAM on imagebox