My copier keeps indicating the spanner function.it

my think its not sc 5042 it will be SC542: Fusing temperature warm-up error -Definition- [A] The fusing temperature does not reach the fusing standby temperature within 50 seconds after the main switch is turned on. - Possible causes - · Fusing thermistor defective or out of position · Fusing lamp open · Fusing thermofuse open · Power supply board defective · Poor connection of the fusing unit
5-810 SC Code Reset Resets any service call condition. After performing this SP mode, turn the machine main switch off and on. See "Troubleshooting - Service Call Conditions" for how to use this mode. 0: No 1: Yes