While you wait for answers, we may have found some information which could help you.
Click here for Error Code H FlashingSharp AR 6020v Error CH?
What does H4 error code mean on the Sharp AR-5520N?
What does H4 error code mean on a Sharp AR- 5316E?
Problem with blackened copies?
clear an error code H 4 on a sharpAL1642cs copier?
what does h4 mean on my sharp printer?