Question about Sharp Office Equipment & Supplies
Sharp AL-1631: Flashing H-4. Paper tray light is on but not flashing
H4 indicates that you have no power for your heater lamp. Either the thermostat or the lamp is open. For the thermostat, you can reset it if you know how to remove the fuser section and its cover so you can see the thermostat and reset from there. For the heater lamp, check its continuity using a tester.
Posted on Jul 23, 2009
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Posted on Jan 02, 2017
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