I have an hp kx-fl511 fax machine. Has new toner

There are two things to try. First, did you shake the toner cartridge back and forth prior to installing? This evenly distributes the toner throughout the cartridge. A lot of people skip this step or just give it a perfunctory shake. The other thing to check is although you cleaned the drum/roller assembly, did you clean the Corona wire? This is important because a dirty wire will interfere with proper disbursement of toner as well. The wire should have a TAB that rests on the side. Run the TAB back and forth a few times to ensure the wire is clean and return the TAB to is resting spot.

These 2 steps should fix your problem. If they don't you either have a bad toner cartridge (check the date) or a bad drum. Best of luck to you.

replace toner cartridge

It's important to gently move the toner cartridge from side to side to distribute the toner evenly through the cartridge. This could be causing your blank lines. Also, clean the Corona wire when installing a new toner cartridge. Best of luck.
Greg

The "drum" referred to is the imaging drum which is replaced separately from the toner cartridge. The drum life is rated for a certain number of copies, and the printer is telling you it's time. Replacement drums are available at big-box office places and from many online sources. Just do a Google search for "kx-fl511 drum". The new drum just slides in much like the toner cartridge, so replacing it isn't difficult.

just change with new drum and toner.after replacing when msg gone just press start.u will receive ur faxes in memory.MIAN AKHLAQ

Probaby an LED segment is burned out in the scanner assembly.

kindly follow this instruction

but doing this will erase all the message in the memory


press menu #9000*550 start

unplug the unit once heard the beep
after 10 seconds, plug it again

It sounds like you need a new cartridge. I am not familliare with that product, but I would strongly suspect the drum or toner cartridge. They may be all one.
Often those cartridges are very low on ink and do not display a message to that effect

It's time to change NEW DRUM UNIT..and that's why your Toner will Not Last Longer because unnecessary toner (the black lines) will be on the copy every time the fax comes or you make a copy.

HAVE U TRIED CHANGING THE TONER HAPPY FAXING OMNIPRESENT