When machine is put on, it warms up and U2 appears and the machine does not respond any longer.
Try to cancel it by pressing: #-interrupt-C-interrupt simultaneously, then when the panel goes off input 16 then press the COPY KEY <> The machine will restart automatically. if U2 still remains.. try to replace the mainboard.
There is usually a two digit number after the U2 that goes after it.
If you turn off the machine, unplug the unit, wait 20 seconds, plug it back in, and turn it on does the error go away?
Error code U2 is an EPROM error or it could be a counter error depending on the last 2 digits of the machine. U2 for Sharp copiers indicates there is something wrong with the memory of the copier.
It should be looked at by a Sharp copier technician to resolve the problem.
I found this on the internet today. It lists all the error condition codes for most Sharp copiers:
http://www.visualhawk.vcc.ro/sharp_error...
All the digital machines regardless of model carry the same condition codes. If your AR series copier isn't on the list, any one should work.
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My ar 5316 E printer cd is broken pl give the sharp web address to find that cd
SOURCE: Sharp AR 5316 E photocopier error clearing
Try reset by pressing [#] [interupt] [C] [interupt] [1] [6] [start]
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My copier is AR-2618 and an error H4 appears that cease all working.
My photocopier is just displaying H 4 and cannot function. How do I solve this problem.
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