20 Most Recent OKI C5100n Laser Printer - Page 7 Questions & Answers

The K drum sensor is probably covered with toner residue.
First clean out excess toner spill and see if you can clean the sensor , which should be an opening on the right side wall directly across the K drum. Use a cottonswab with alcohol.
If the sensor is bad, you should have a tech look at it, The sensor board is held in with14 springs!

Joe
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how many prints have u done with the drum, black.???, if it´s new, just clean the leeds of the black, with a piece of cloth.

I sent the message with a way for us to communicate again.

It sould be the print heads have gone bad.
I just had a Dell color laser that would print a 1" wide yellow line down the right side of the paper.
Replaced the print head unit, and problem solved.

My semi-educated guess would be that your transfer belt unit is getting close to the end of it's time - This is Part No. 351002.

Printable Version

it´s pretty strange but if u replaced both toner and drum, the printer doesn´t give any error u may have the high voltage board damaged, and u can't do much, u must contact a local dealer

how did u connect the printer, (USB, Paralell, Network), if it is usb and is connected to a pc it must appear, if doesn't u may have a motherboard problem, if it is paralell or network, u must instal the printer as a paralel printer and if it is a network after u install it u must change the port to a IP port.
good luck

probabily u have some message on the printer display, and your problem must be Toner low, u will ned to replace toner.

You should be able to download a new set of drivers from Lexmark's website.

lpt1 usually only works for parrallel printers unless a USB port has been mapped as lpt1.

Is this being installed on a Windows Vista computer?

my printer can't print in color

I need to know if the test page that the unit prints as "Demo Page" comes out fine. If this is the case, your problem is within your application (software) or computer connection (check all cables). If this is NOT the case, I'll need to know more about your scenario. Operating system, type of connection (USB, parallel) and what are you trying to print. I'll be waiting.

Did you check whether the printer is compatible with Windows vista. If you are not sure check from the printer company web site.
Better check also whether, when printing the printer your using is highlited in properties of the printers in control panel. Its better if you dellet the printers you are not using.

I have the exact same issue. Does anyone have a serice manual for this model so I can see just how big a job replacing the clutch is?

Thanks -- Steve

The service manual says that when you get that message if you open and close the cover it will temporarily reset the message for 500 pages.

this is a too complicated if you a not a serviceman

Check toner cartridge. Does it need replacing?

posted by Halfwalkeer on Nov 13, 2007 Report abuse

Just replaced the color toner cartridges in the c5100N, two OKI (cyan and yellow) and one non-OKI (magenta). Now it appears that registration is completely off.

When printing an image, there is a band of yellow at the top about 6mm high, and a band of purple (not cyan) at the bottom about 6mm high. It seems that the yellow printing LED array is printing offset. I've verified this with a typical test page that shows yellow blipped up by several mm.

What the hell happened ? How can I fix it ?

Thanks -

Dean.
Comment by Halfwalkeer, posted on Jan 02, 2008 Drums are all at 34%. Please don't tell me that the drums only have a 50% lifetime on them, because that would just suck royally. When you say the problem is most likely drums, in what way ? What could have gone wrong ?

I was able to more or less fix the problem ... It took several iterations of ColorMenu->Adjust Registration followed by Maintenence Menu->Menu Reset, but it was finally able to pull the registration back into line.

I got worried at one point - after it was "fixed" the printer was powered off. Upon powerup again, registration was off by several centimeters ! Another round of the above finally "fixed" it again, but I haven't powered it down again.

It was a cheap printer. Maybe this is why ...
Post Solution Work Queue Have the same problem? X This Problem has been added to the Share Your Expertise Page under "My Work Queue". OK Solution #1 posted on Jan 02, 2008
Soulvisitor
Rank: Guru
Rating: 86%, 674 votes

What is the stats % of drums if low under 50% change them, soon as you add non Gen you throw a spanner in any attempt to fault find, fix is possible toner more than likely drum/drums, do a print of each colour and change drums as indicated by failure in its colour to print, check transport belt is OK and led heads are clean
Comment by Soulvisitor, posted on Jan 02, 2008 I was thinking about the band of yellow being caused by cleaning blade wearing on drum, drums are garenteed by oki if over 50 %, under that one is on their own ie purchase new if having problems with them

If you can fix problem doing colour calibration then faulty drum is not likely the issue.

Cant stress how many problems are caused by non gen consumables in machines, highly dont recommend their use.