SC 542 Basically the machine is telling you that the fuser did not reach its target temperature in a specified amount of time. In normal circumstances this code will apear if the thermistor is not maintained or replace periodically or in abnormal circumstance the heat lamp blew. This is a Service Tech reset code. You must go in service mode and then reset the SC/Jam in the service tables.
To prevent this:
1. Never start the machine if your office is far below room temperature. The machine.
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SC 542 Fusing temperature warm up error.Fusing lamp defective,poor fusing unit connector,thermistor warped or broken,thermostat has tripped,power supply defective.After verify the componenets try reset the error.Enter in service mode:Press the yellow key and press 107 and keep pressed the stop key 3 second.Touch the SP window on screen open the front door and turn OFF the copier.Wait 1 minutes ,close the front door and turn ON the copier.If the error code persist change the upper fuser roller and the thermistors.
Fusing temperature warm-up error The fusing temperature does not reach the standby temperature within 20 seconds after the main switch is turned on. • Fusing thermistor defective or out of position • Fusing lamp open • Fusing thermostat open • Power supply board defective • Poor connection of the fusing unit