H4-00 relates to the fusing unit not reaching the desired temperature. This could be due to a heat lamp or thermistor failure. I would recommend calling your local service engineer. hope this helps.
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We'll need to enter the simulation mode by pressing the # * C * 14 (HARSH - STAR - C - STAR - 14) and then hit the copy button twice. The machine will restart and the error code will stop showing.
You have successfully rebooted your Machine... Note: You will need to have a fast finger for it to enter the simulation mode.
Check blinking of the heater lamp
with SIM 5-2.
When the lamp blinks normally:
Check the thermistor and the
harness.
Check the MCU PWB thermistor
input circuit.
When the lamp does not light:
Check for heater lamp
disconnection or thermostat
disconnection.
Check the interlock switch.
Check the power supply PWB
and MCU PWB lamp control
circuit.
Clear the trouble with SIM 14.
You need to change the developer and reset the code, you could just reset the code but copy quality may begin to deteriorate, have you any experience with copiers?
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