Question about OKI C5100n Laser Printer
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.
Posted on Sep 03, 2009
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Posted on Jan 02, 2017
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