While you wait for answers, we may have found some information which could help you.
Click here for Sharp Error RepairProblem with blackened copies?
What does H4 error code mean on the Sharp AR-5520N?
Sharp photocopier?
How can I fix L6-10 on my Sharp AR-M208?
How to reset or clear error code l4 in sharp ar 5316?
Sharp AR 6020v Error CH?