Copier is a 214 and shows U4 code

http://xeroxmachineerrorcode.blogspot.com/2016/07/u4-error-code-xerox-wc50165020.html


Unsure what model Xerox is displaying error u4.

To pursue your question further, please provide Model name and number that is on the equipment in question.

My Xerox Workcentre 5020 machine showing U4 error How can solve this...

my copise xerox work center pro 423 are showing on display this error (u4-6 @ reboot) how i can clear this error please tell me

my Copise Xerox work center pro 423 are showing on display this error (U4-2) how i can clear this error please please tell me any body if knows

A U-6 means the memory on the main board failed.
If the machine is old, the battery on the board is old and not holding the values in the machine.
Replace the main board will correct the problem.
Since it is in the middle deep in the machine you might need to have Xerox repair it for you if they still provide service to this model.
Good luck.

U4-2 Low fuser temp problem U4-3 High fuser temp problem U4-4 High fuser temp problem U4-6 High fuser temp problem

replace thermistor in fuser unit

Reset the fault code first as follow:
Enter in diagnostic mode
Enter 20-3 and press 0 then press start again .
Hope it will solve if not done check the heater lamp continuty if found fault replace same.

U4 code refers to a fuser heat failure, you'll probable find the fuser roll is stone cold .Possible cause is open circuit heater or overheat thermostat popped.Either way you will need to pull out the fuser unit and check continuity of the components

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.

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 fiser and clean the buildup off the thermistor.
If it doesnt you will most likely have to replace the fuser.

The fuser is not warming up.
On that machine under the web there is a thermal fuse on a white plastic mount, it has one screw through it.
It is most likely blown. Possibly caused by a jammed paper in the fuser.
That fusable link needs to be replaced.