Getting solid black lines across pages

SOURCE: PC940 dark lines across the middle of the page

Either the Fuser/Heating unit is bad, or the optics are dirty.
What you can try to do to narrow it down, is to make a copy but.. STOP the machine in mid process by turning the power off. This will create a paper jam in the machine. If timed properly, your copy should be 1/2 way through the machine with some image on it. (Make sure that you are trying to copy something on the glass). The copy is not FUSED, so the toner will wipe off so be careful not to rub the page against your clothes/sleeve. IF the black line is on the page at this point, the problem is not in the fuser but probably in the fiber optics. If the problem is in the optics and will need to be cleaned. If the black line is NOT on the page at this point, then the fuser unit is bad and needs to be replaced.
Let me know how the copy comes out when you stop the machine in midway and I can see if i can give you any more suggestions.
Good luck.
Mac

SOURCE: toner not set insert toner message

The problem is with the paper tray not the toner, believe it or not. Take all of the paper out of the tray and then reinsert the paper into the tray. It should then work fine.

SOURCE: black ink cartridge is leaking and black line is running down back of page

YOU CAN TRY PULLING THE CARTRIDGE OUT AND WITH A CLEAN , VERY SOFT CLOTH , CLEAN THE HEAD GENTLY ....SOME CARTRIDGES ARE JUST FAULTY ....HAVE YOU TRIED RETURNING IT OR GOING TO CANON SITE AND TROUBLESHOOTING ?

SOURCE: Flashing lights on black and colour ink cartridge indicators

Flashing lights on black and colour ink cartridge indicators

SOURCE: My copier machine is printing out black lines.

Hi, does stripes appears only on copies or also on printed images?

If only on copies that means that you have to clean the copy glass.

If on both, its probably drum unit that causes the problem. Usually the stripes are slim, and verry close to each other, like a sharp brush paint job.

How many copies do you have with these drum? check it on 123 button.

If the copie is on one side totally black and the toner isnt fixed on paper that means that you have to replace fixing film.

For service manual write me on [email protected].

Hope that helped!