Question about OKI C5100n Laser Printer

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Fatal error Hello everyone. our printer is showing a fatal error, stating K/01b3a8e0 ?????? and we have no idea. please advice if you can. many thanks lisa and mo

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Re: fatal error

Fatal Error K (for BLACK) - Black toner or drum problem, Drum life exceeded? Display would of said black drum near life before failing.

Posted on Oct 17, 2007

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Magicolor 2430 DL Fatal Error Code: 12H


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1 Answer

Our OKI C5100 is showing 171:Fatal error. What should we do?

The 171 Fatal error:

Upper Thermistor, State:Open

When an open circuit has been detected in the heat roller thermistor (low temperature)

Check the heater connector and the thermistor connector to make sure they are seated properly. If OK you probably need to replace the fuser.

Hope this helps.

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Fatal error 980 OKI C5500 printer

I had a paper jam and removed the jammed papers. The paper jam cleared and then the Fatal Error 980 appeared. OKI C5500 printer

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OKI C5500 Fatal Error 177

From OKI error log:

Lower heater temp state - Low
backup roller thermistor indicates low temp
seek service if turning off/on printer does not solve problem

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Cartridge Error


This link has information on print cartridge error issues. This link shows information that pertains to clearing paper jams. Hope this helps.

Please remember to rate this information.


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980: Fatal Error

From the Service Manual:
*Service call

*Error by media
clinging to the fuser

*Media has clung to the fuser.

*Power OFF
Replace the fuser unit.

Suggestion -
Before you replace the fuser, take it out and check for a piece of stuck label, paper, etc. You can spin the fuser roller by turning the gear on the side.

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Fatal error 172

From OKI error list:

Error 172 - Upper Heater Temp State: High
Heat Roller Thermistor indicates high temp

Turn off printer, let cool down.
If problem still exists seek service

Mar 07, 2008 | OKI C5300n Led Printer

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