Question about Xerox Office Equipment & Supplies
A U4 is a fuser overtemperature.
You can hold down the "0" while powering the machine on. That will enter the machine into diagnnostics.
Next enter code 401, and press start, See of that clears the problem.
If it does. Remove the fuser and clean the buildup off the thermistor.
If it doesnt you will most likely have to replace the fuser.
Posted on May 15, 2008
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Posted on Jan 02, 2017
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