Xerox CopyCentre prints out faint copies. DIrty?

The document feed rollers may be dirty/worn which is causing the paper to come into the scan area late causing your document cut offs. use a clean, lint-free cloth dampened (not moist) with water and clean the document feed rollers. Confirm they are dry then, try scanning multiple pages and see if they pull through without stalling. If they do, it's time to replace those rollers.

Most likely, you need a new toner cartridge, part number 106R01047

Hello sir; When you make copy is through by ADF? make another copy leave on the glass, compare both, is that same with the line then you have to replace drum blade, if first one with the line and second one without the line, then you need to clean a narrow strip glass on left hand side of the plateform.

Press,,,,, Menu #1934 . What you may want to try first is to do what is called the Shading adjustment. That calibrates the scanner.
It would be found in the maintenance menu after you enter diagnostics.
You must place 5 pieces of white paper on the glass before you perform the adjustment.
There really is no way to increase the amount of toner concentration on that machine. You may very well have a defective ink cartridge. That is not uncommon on the C20. There is a metering blade in the toner cartridge that often times does not allow enough ink to be applied to the toner roller.

Open the cover and put a piece of paper on only half the glass, and make a copy. BLOCK the left side of the glass with the blank paper.
See where it is blank. Most of the times that is a dirty or haved up mirror in the scan head. One of the small mirrors in the black assembly under the lamp. When a digital copier scanner optics become dirty, the image in that area becomes very light .

The metering blades in those cartridges go bad and do not allow the ink to get to the page. Look at the front of the toner cartridge, is should be a solid consistent black all the way across, if its streaky, not consistent all the way across replace the toner.
The other problem could be a dirty laser. If replacing the toner doesnt work let me know, I will tell you how to remove and clean the laser.

hello sir; you said this one is brand new, did you follow the installation instruction, no matter what, just di it again,
1, press "menu" ,
2, press up/down arrow keys until"new drum" display
3, press "mode/enter"
4, when you see"new drum unit?" press "1" to select "yes"
5, turn power off and on .

pls check the drum charge grid and toner cardritge. may be the toner is empty or charge and transfer corona wire getin dust.

ave you tried shaking the cartridge vigorously from side to side?
The ink may be compacted in one end of the cartridge from storage.