For many reasons (electricity surge, etc) your SHARP copier will experience error H4,H5,U3 in this case my copier machine is SHARP AR 5623. The machine blinking with error code displayed.
To fix this error all you need to do is:
1. Press CA
2. Press #,interrupt,C,interrupt in sequence
3. Display will blank
4. Press 1,4,start button in sequence
5. The Error should be gone by now
You can watch below video showing how to reset the error above.
Hope this post will be useful to you, enjoy…