Colour issue (banding/arcing) on Xerox C75 Press
Hi All, hope someone can offer some help...
Have a C75 which is working like a charm. Recently we had a grinding noise coming from the back on and off. I was away and my colleague printed a big job with the grinding noise. When I returned I tried to locate it and in the process of doing so found that the Cyan Developer unit had "Seized up" as it wont turn no more, so also the Cyan Drum. (I got an error message that the DEV motor failed to turn.)
Upon close inspection I found that there was an accumulation of toner at the toner exit of the drum and dev unit which had probably heated up from friction and melted into a chunck. I carefully removed the units, replaced the drum unit altogether.
Opened up the cyan unit, collected the developer in it and removed the obstruction. After this i poured the collected developer through a fine sive to remove any bigger chunks and retured the developer back to the housing, closed it and reinstalled the developer unit.
Now when I print I get theses bands on Cyan (see uploaded pics - leader edge is where the cyan is closest to the short edge of the paper). The bands are differently spaced, the more consistent ones are about 15cm. It also seems to have a distinct pattern on the one side (003,004) - It appears more toner with two whiter lines, in front and behind it.
What could cause this to happen - is the dev unit perhaps faulty from the damage, or perhaps the Mag Roll. I have already replaced the drum unit and the problem still persists.
Is it possible to swap the dev units around to see if the problem follows it (will have to close the toner inlet chute to avoid contamination).
Any suggestions?
(I removed the entire toner exit tubings and cleaned them all out very well and replaced the assy.)001.jpg002.jpg003.jpg
Have a C75 which is working like a charm. Recently we had a grinding noise coming from the back on and off. I was away and my colleague printed a big job with the grinding noise. When I returned I tried to locate it and in the process of doing so found that the Cyan Developer unit had "Seized up" as it wont turn no more, so also the Cyan Drum. (I got an error message that the DEV motor failed to turn.)
Upon close inspection I found that there was an accumulation of toner at the toner exit of the drum and dev unit which had probably heated up from friction and melted into a chunck. I carefully removed the units, replaced the drum unit altogether.
Opened up the cyan unit, collected the developer in it and removed the obstruction. After this i poured the collected developer through a fine sive to remove any bigger chunks and retured the developer back to the housing, closed it and reinstalled the developer unit.
Now when I print I get theses bands on Cyan (see uploaded pics - leader edge is where the cyan is closest to the short edge of the paper). The bands are differently spaced, the more consistent ones are about 15cm. It also seems to have a distinct pattern on the one side (003,004) - It appears more toner with two whiter lines, in front and behind it.
What could cause this to happen - is the dev unit perhaps faulty from the damage, or perhaps the Mag Roll. I have already replaced the drum unit and the problem still persists.
Is it possible to swap the dev units around to see if the problem follows it (will have to close the toner inlet chute to avoid contamination).
Any suggestions?
(I removed the entire toner exit tubings and cleaned them all out very well and replaced the assy.)001.jpg002.jpg003.jpg
Comment