Copier making black backgroung after 3-4 prints.

remove the toner bottle and make around 50 copies but make the copies in A4 LEF but with open ADF and put a white paper on half of the A4 LEF area for to be the copes half white half black. This must be done for the extra toner that is inside the developer unit to be removed. It must be half black-half white for the machine can print the copies, otherwise it will constantly jams. pit the white paper in the right half section of A4 LEF area and make around 50 copies. But do this without toner bottle inside the machine. After the 50 copies end,print a counter and see does it got better. If is ok then return back the toner bottle and the machine will continue to work. If still the copy is bad then make more copies without toner bottle until the image is clear.

You can try this, try to clean the dev rotary sensor. open the upper right hand cover then there are two assy's to be removed also for you to access the rotary sensor located inboard side. this sensor senses the home position of rotary developer. to removed this sensor, you have to open the rear cover, then rotary pwb. some 9-363 code is due to busted fuse in the rotary pwb. Or could also be a fault with the fuses.

please have a check with the developer unit of the black color , it might not be moving.

Is the scanning lamp coming on ? No, replace lamp
is there a print in the background? Yes, check Seperation unit ( inside under the drum, usually three thin wires)

Remove the black and color ink cartridges.
Right above where the black ink cartridge was, in the top left hand corner of the printhead, push up towards the ceiling and you should be able to push a button that releases the printhead.
Place the printhead right back into the printer and push straight back on the back wall.
You should hear a loud snap.
Replace the ink cartridges which should snap as well.
Close the printer.
After about a minute or so the printer will ask you to do a calibration.
Insert a paper and press start.
Scan the calibration sheet.
After that, in the menu, do a printhead clean.
Do one basic and one deep.
Print a demo sheet to see if anything has changed.
If the picture looks better, continue to do cleans.
In the event that it does not, the printhead will need to be replaced and since the printer is still under warranty, Kodak specialists will try to overnight you a printhead.
The whole process is short and free.
The number for Kodak AiO Support is 1 800 421 6699.

That's a process problem with that machine.
May require a service call .ON and OFF is pretty much all a customer can do and wait for it to setup.
NOTE: The problem occurs because of the trickle development system in the machine, making extended lengths of black and white copies / prints does not allow the black developer housing to purge itself of excess waste Toner (Dry Ink) and Developer. There are two solutions for the problem:

• Make 1,000 copies / prints of a black and white job, then make 150 copies / prints of full color. Continue making 1,000 copies / prints of the black and white job, then 150 full color, and so on, until the entire black and white job is complete.
• Make extended jobs in groups of 100 by making 100 copies / prints of the black and white job, then allowing the machine to cycle down (return to 'Ready') and making the next 100 copies / prints. Continue in this pattern until the entire black and white job is complete.

NOTE: The problem occurs because of the trickle development system in the machine, making extended lengths of black and white copies / prints does not allow the black developer housing to purge itself of excess waste Toner (Dry Ink) and Developer. There are two solutions for the problem:

• Make 1,000 copies / prints of a black and white job, then make 150 copies / prints of full color. Continue making 1,000 copies / prints of the black and white job, then 150 full color, and so on, until the entire black and white job is complete.
• Make extended jobs in groups of 100 by making 100 copies / prints of the black and white job, then allowing the machine to cycle down (return to 'Ready') and making the next 100 copies / prints. Continue in this pattern until the entire black and white job is complete.

NOTE: The above solutions are based on jobs using 8.5 x 11 inch paper, single sided, with no more than 28% coverage.

: The problem occurs because of the trickle development system in the machine, making extended lengths of black and white copies / prints does not allow the black developer housing to purge itself of excess waste Toner (Dry Ink) and Developer. There are two solutions for the problem:

• Make 1,000 copies / prints of a black and white job, then make 150 copies / prints of full color. Continue making 1,000 copies / prints of the black and white job, then 150 full color, and so on, until the entire black and white job is complete.
• Make extended jobs in groups of 100 by making 100 copies / prints of the black and white job, then allowing the machine to cycle down (return to 'Ready') and making the next 100 copies / prints. Continue in this pattern until the entire black and white job is complete.

or

1. Power OFF the machine.
   
   
   
   
2. Wait 30 seconds.
3. Power ON the machine.

9-357.
Black toner problem.Probably You have low toner sensor defect.
But try first to vacuum and clean black toner dispenser.You must vacuum whole path wich is used to transport black toner to developer unit.Then if printing B/W print only, you must print 10 full color sheets every 100 copies.

Make 1 copy with the lid open & verify that the scan lamp is lighting & that the scanner moves. A blown lamp is the most common cause for all black copies.