Question about Sharp Office Equipment & Supplies
The error refers to a firmware mismatch. Have you had any major parts replaced recently i.e. the control panel. If you have then the machine may not recognise the new part because of software/firmware differences. You could try resetting the machine through the simulation mode but if you have had a major component replaced then the issue is more than likely firmware. A local dealer can provide the update with the latest firmware.
Hope this helps.
Posted on Jan 02, 2015
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Posted on Jan 02, 2017
H4 error pertains to lamp errors.
that would either be the copy lamp or the heater lamp.
check both lamps.
with heater lamps,it's usually caused by either a broken heater lamp or a dirty thermostat on the heater roller assembly.
Posted on Jun 10, 2009
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