Error sc542
1. Switch machine off.
2. Hold up and down arrows in while switching the machine on.
3. Select Service menu and OK.
4. Scroll to 5.Mode and OK.
5. Scroll to 810 SC/Jam reset and press OK.
6. Execute
7. Switch machine off and on again.
If code does not reset you would need to replace the Fusing Unit and follow the above steps again.
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Usually answered in minutes!
check your fuser unit the thermistor and the thermostat
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