Hi, The H4 means the copier (fuser) does not reach a specified temperature within a given time. This could be a bad or dirty thermistor or a bad heater lamp or a bad control board or AC supply. The first thing to do is reset.
To do this enter service mode by pressing the following keys one after the other (make sure you are in copy mode) "P" "interrupt" "C" "interrupt" then enter 14 and execute the reset. then press the C/A (Clear All) button to exit. If problem persists you should then have a service tech take a look at it.
Hope that helps...
Lbcoaster
Was this helpful?
Yes
No
4 people thought this was helpful
Popular Solutions for Sharp AR-407 Grayscale Copier
Hello. Each time I print the paper gets jammed in the roller located inside of the second drawer...
(More)
Hello. Each time I print the paper gets jammed in the roller located inside of the second drawer from the top on the left. I have to manually turn the white knob to paper out. I looked the roller and it appears to have plastic on it that looks melted. Please assist. Thanks in advance.