Have copies that are very dark. Wiped down inside and replaced toner but am still getting dark copies.

Put paper in the manual feed tray(tray 1). Print something. When the paper gets about 1/2 way into the printer, open the top cover. Pull out the toner. Look down at the paper in the printer. Do you see a thick dark line? Replace the toner. No thick dark line, check the fuser for damage.

Clean the waste toner collection bootle,under transfer belt,clean the toner bootle house and align the drum cleaning blade or chnage it.

Is the toner sticking to the paper? This could produce double images (but not mirrored) More likely a problem with a mirror in the write unit out of place, which could create "mirror" image and poor quality.

What did you wipe the drum off with???? That is why you have this problem. You may want to try recleaning the opc with a dry soft rag, also you may want to clean the drum blade... If that dose not solve your problem, you may need to replace the opc & blade... Have you tried to stop the copy before it gets to the fuser unit.. If so, are the marks there???

Are the dark spots random and moves location with every copy or are they at exacly the same place on every copy? Random you will need to remove the drum/toner and use a blower to clean the inside of the machine,failing that replace the drum unit.If the spots don't move clean the top glass.Let me know

Sounds to me like the drum needs replacing, and likely the developer too. There is probably a haze of toner still on the drum. You can check by opening the right side cover and looking at it. Is there toner on the drum (green cylinder). It may not be too obvious depending on how dark the copies are. GENTLY wipe a tissue across it after making several copies - it should be clean if the drum is functioning properly. If it is, it could be the fuser that is wearing out, but I'm leaning toward the drum. As I said, if you need to replace this, it is a good idea to do developer at the same time, because these machines tend to be a little sensitive.

Try replacing the cleaning blade on the drum.

If you make a copy, does the copy have dark areas down the middle of the page? If so, remove the toner cartridge and gently roll it around to redistribute the toner inside, maybe even replace the toner cartridge if you've had it a long while. If you still see unevenness, you may need to have the machine looked at.

If the copies you make on your machine look fine, then I would suspect that the person sending you the fax has a dirty scanning element. Check with them to see if they can clean the scanning element and it should improve the fax quality.

not sure what model fax you have, did not specify.

1-check to see if there is a white metal plate opposite the glass.
is there any toner or dark marks on it ? clean or use white out to cover make sure it is dry before using.

2-check the black spongy roller inside the machine

3-it maybe that you have a two unit cartridge, one for toner one for the drum ( which is what it sounds like) pull out and check.
It should be a shiny cylinder, does it have a black ring around it?

4- the last thing to check is the fuser, on its way out of the fax it passes two rollers on on top of the other, it may be a little difficult to see, may have to remove a cover, how do they look?

your machine most likely has toner spills in it.
if you send faxes face side down follow these instructions ;
1- take out toner
2- look for thin glass strip on bottom inside the machine
3-wipe clean

if you make copies side up then do the same except look for glass strip on the upper side of machine