Problem printing black

> OKI C5200n laser printer

Take the toner-cartridge out, and gently tilt it left-and-right
to redistribute the remaining toner in the cartridge.
Reinstall it.

It could be that the print density setting is set too low. Adjust to higher density printing.

If the ink of the toner is not well distributed, remove the cartridge toner from the printer. Shaking it to redistribute toner more evenly will help..

Reset the printer
On the printer press the menu button until you reach MAINT.
Then press the item + button until you reach DRUM CT RESET. Then press select.

That will fix it.
Thank you for using Fixya
Alp

Your tonner have problems with humidity.

Change the Toner/Drum unit

It's probably the black drum.

please you used the colour printer ? if yes then your check the csrtridge a refeling the towner and service the cartridge and service in printer and aply the print is ok.

Hello sir; I suggest you replace black developer see what happen.

Get new OKI toner cartridge- Black is "K"

Although the drum life is at 65% it could still have a problem. It could be that the end of the drum is starved of toner or there is lumpy toner in the drum. Take out the black drum and give it a good shake then a gentle one to level the toner out and refit. Had the same with a canon unit 2 weeks ago. If still no good then a new drum is required. I bet you are using recycled drums!!

Not able to print a status page. Tried holding down menu 5 sec and no output. I searched the menu and am not able to find how to print status page. I did print out a demo page and the black is great but when i print out text (like the entire menu map) the black is grey. Let me know if there is anything else I can do.

Here's the 'secret' sevice manual: http://www.feedroller.com/Store/Service%20Manual/50_53_5600.PDF
I would also (very carefully) check for torn paper around the rollers of the imaging drum that might be rubbing the area.