Code Level Details
542 A Fusing Reload Temperature Error
After starting up or during operation, the reload (operating) temperature cannot
be reached.
• The fusing thermistor is deformed or out of position.
• The fusing lamp harness is loose, broken, or defective.
• The fusing unit is defective.
• The power voltage is not correct.
• Check the power voltage.
• Check the fusing unit thermistor.
• Check the fusing lamp.
• Replace the fusing unit.
• After solving the problem, the service technician must execute
[FusingSCReset]. Otherwise, the machine will continue to issue this SC code
and cannot be operated. (page 64 "Executing Fusing SC Reset")
Code Level Details
543 A High Temperature Error (Software)
The temperature inside the fusing unit exceeded 235°C for more than 0.5 sec.
This SC is displayed if the error is detected 10 times or more.
However, the machine does not check for this error during low power mode,
sleep mode, cover open, or when the fusing lamp relay is OFF due to
malfunctions.
• The PSU is defective (triac has short-circuited).
• The main board is defective.
• Replace the main board.
• After solving the problem, the service technician must execute
[FusingSCReset]. Otherwise, the machine will continue to issue this SC code
and cannot be operated. (page 64 "Executing Fusing SC Reset")
Service Calls
71
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