My xerox 5201 copier is making black copies. I

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.

Hello sir; That problem not caused by toner, is by drum cartridge, replace it will take care your problem.

USUALLY Black copies are a Drum grounding problem. I have not seen "black" copies due to old, bad, or otherwise inferior toner... Although, It is a Xerox, LOL

On this machine, the image is transferred by a black roller on the side door.
Check to see if this roller is in place correctly. If it is too old you may have this problem, and needs to be replaced.
If you can run a copy pull the door when it makes the copy half way on the drum, then pull out the drum and see if there is any image on it. This will show you the xerographic part of the copier is ok.
Pull out the cartridge and check for the grounding contacts make sure they are in place correctly.
When the door is closed there is a black plunger on the inboard end that pushes in. Make sure it is pushing in all the way and not stuck.
Check inside the view of the exposure box just above the copy cartridge, make sure there is no paper in there blocking the view of the image to the drum.

When you close the side door make sure the door is fully closed on both inboard and outboard side.
Other than this, call Xerox for a repair.

You have a dirty laser, I will tell you how to clean it when I am awake.

if the paper is black and the copies are coming out there is a problem with
1) the drum,
2) the transfer unit--- the unit under the drum, with thin wires,

If you still have a contract yes of course have a technician come fix the machine sounds like a bad drum, but you should have the experts investigate this, if it is in the same location each time you print and copy, try changing your drum cartridge other than that call Xerox.

Are the lamps comming on, and on brightly? They may need replaced.
You may also have a bad ground contact to your drum cartridge.
Remove the cartridge and clean the contacts. The ground contact may also be worn out.
Those are the 2 most common problem with black copies on that machine

sounds like faulty drum cleaning blade,which is usually contained in the replacement drum module.I would be inclined to take the drum unit back where you got it (unless you replaced it with a second-hand one) 99% certain the problem is contained in that module

is it a printer/copier?
yes....do both prints and copies off the glass come out black?
yes...probably a problem in the drum/ CRU area
No- prints OK but copies black lift the lid and watch the exposure lamp...does it light up? does it move? Both of these scenarios would usually bring up a fault code, so I would still be inclined towards the drum unit.Pull the unit out and make sure no paper has sneaked up between the drum and the exposure slot, or even into the drum unit. another cause could be a broken corotron wire (very thin wire close to the drum usually behind a grid (charge grid) If it is a customer replacement drum unit (CRU) the charge grid will be built into the unit and will require the whole thing replacing.......