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Re: xerox 212 copier
Most likely replace the fuser.
And be sure you use transparencies marked for copiers only.
The U4 is an over heat because the tranaparency stuck between the heat roll and the thermistor. Causing the fuser to stay on and blow the overheat.
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1. Check for paper on the fuser. Y remove paper N proceed to step 2 2. Check the installation of the fuser assembly, make sure it is securely installed. Y reinstall fuser N proceed to step 3 3. Remove the fuser. Check the conductivity of the contact points of the thermostat, are the contact points connected N replace the fuser
That is a fuser code. May be a bad heat rod or just need reset. Here is how to reset it.
Enter diagnostics, Here is the procedure.
To enter diagnostics: Hold down ‘0’ while turning on the Power the console will light up. Press ‘Stop/Clear’, the lights will shut off & --- will appear in the display Wait 30 seconds for the optics to complete a self-test before you enter any diagnostic test codes. Never turn off the power before the optics stop moving (or you’ll get a U2 code & possibly some unpleasant noises from the Scan Drive Motor).
Next setp is to use the code to clear the U$ code. *To clear a fuser code:(401) Enter diagnostics, wait 30 seconds for the optics to initialize, enter ‘401’ followed by ‘Print’, then shut down the power & wait 10 seconds before switching power back on.
That will normally clear that problem. Often times when a machine has set for a long time they wont warm up right and pop that code.
Another thing, if you can get the machine to warm up and come ot ready then it pops up a U4. Open that right side door. You will see this silver, looks like a small saw blade. It should be silver, but it will have a lot of ink built up on it, take a soft brush and clean it with that.
Let me know, if hte code 401 doesnt clear it, then the heat rod would have to be replaced. If that happens please let me know and we will procede from there.
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.