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U4 Is a communication error between indoor and outdoor units.
usually means one of the PC boards is faulty. If unit has been freshly installed check wiring between indoor and outdoor 1,2,3 are the same colours on both boards.
Signal transmission error (between indoor and outdoor units) which means a faulty indoor or (more likely) faulty outdoor controller board. Call a tech.
On this model sometimes the plugs on the connectors go bad.
They arc and will not connect good. Sometimes the ends have to be clipped and new pins male and female have to be crimped back on, replacing them on the machine part wiring connectors and fuser rod ends. this fuser kit is a part that is availiable at xerox.
A bad thermistor can cause this type of problem. If the machine overheats, the fuser triac pack can cause over heat problems as well.
On overheats the fuser fuse needs to be replaced. Do not replace with nothing else but a Xerox fuse, this is a safety device. Very important.
Otherwise place a service call to have this area repaired by xerox.
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.
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.
U1-U9: these are technician codes indicating that there is a malfunction in the zoom mechanism of your camera, most likely electronic in nature - a defective IC chip and/or bad circuit board. Repair cost would easily exceed the value of the camera. You should be aware that, just as with today's small digital cameras, both mechanics and electronics of smaller point-and-shoot 35mm cameras consist for the most part of light-duty plastic and fragile electronics. If they last a couple of years they're doing well.
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