If you don't have a user manual, you can download one in PDF form for your copier at the Sharp website. That may have a legend to explain what the error code means, and how to fix it.
SOURCE: how to fix error f2-64 sharp ar-5618
If you wish to get some details; check the site linked here. Pull up older posts. Surf the site with patience. http://electronicshelponline.blogspot.com/
SOURCE: Am a technician , i need help on dis. My sharp Ar 5618 is showing E7-11 error code
E7-11 is
Shading trouble (White correction)
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This can be due to an empty toner , try a new one and reboot the machine.
If you have put a new one in check at the rear of the toner container that a seal is not still on the toner.
reboot the machine.
if this still fails you will need to get some black developer and then ask for details on putting this in, which I can help with.
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