Faint copies on the bottom

[Reeves]

Hi Techs

I have a xerox wc 7855 producing faint copies on the bottom I have changed all 4 developer units, developer materials, Drums, 2nd BTR, Fuser unit but copies are still the same even when I print solids pattern in diagnostic all colors are affected what could be the problem I have attached the copy of the print out

[adriansto]

Hi Techs

I have a xerox wc 7855 producing faint copies on the bottom I have changed all 4 developer units, developer materials, Drums, 2nd BTR, Fuser unit but copies are still the same even when I print solids pattern in diagnostic all colors are affected what could be the problem I have attached the copy of the print out

Old machines. What about cleanning the ROS ( inside too )

[Reeves]

Old machines. What about cleanning the ROS ( inside too )

xerox wc 7855 doesn't have the ROS

[adriansto]

xerox wc 7855 doesn't have the ROS

Yes you have right. Panic stop when print A3 size paper and check image on IBT. If image is NOT ok on IBT same procedure and check image on drums. If ok on drums then must check 1st BTRs or btr hvps.

[Reeves]

Yes you have right. Panic stop when print A3 size paper and check image on IBT. If image is NOT ok on IBT same procedure and check image on drums. If ok on drums then must check 1st BTRs or btr hvps.

I have tried hvps the problem is still there

[adriansto]

I have tried hvps the problem is still there

Try to see the image on drums and ibt as I said.

[Jack79]

I have tried hvps the problem is still there

It looks like drum problem. If they are fine then transfer belt assembly but I would start with drums first

[xcopytech]

If you have same problem for all colors on internal test print then check back up roll in ibt assy or replace ibt assy

[Reeves]

Yes you have right. Panic stop when print A3 size paper and check image on IBT. If image is NOT ok on IBT same procedure and check image on drums. If ok on drums then must check 1st BTRs or btr hvps.

The problem was the transfer belt thanks for the concern