Error code SC542, unable to clear message from

this is an error for the fuser heat up..the temp is not being maintained or fluctuations. try this press the yellow clear button at top of number pad then enter 107 and hold down the red cancel button..the screen will change enter the copier sp and select 5.mode arrow down to 5-810 sc reset and execute.turn machine off.. if the code disappears it could have been just a glitch if not check the fuser to see if there is heat coming from it the lamps will come on at te start up. you can check this by putting a screw driver in the actuator slot to cheat the door switch if you see the lamp come on then you may just have to clean off the thermistors .. open the fuser up with the top screws and check that there isnt any build up of toner on thermistors..hope this helps good luck A

Yes, fuser codes are very touchy and the reset procedure should never be given out to the general public. The posibility of fire, though remote, is probably the best reason of all. Either the TH1 and TH2 are coated, the UFR is bad (or both). Power issues will also cause this problem.

This is a Fuser Error code...there is a reset for it, however, I would be shot if I divulge this proceedure, Best have a qualified tech troubleshoot the exact component that failed and then reset the error code.
If the code was reset numerous times in a row, there is a possibility of melting down the Fuser Module causing more trouble $ wise, let alone saftey factors.