d Put the drum unit and toner cartridge assembly back into the machine.
e Close the front cover.
f Plug the machine’s power cord back into the AC power outlet.
Turn on the machine’s power switch.
Troubleshooting and routine maintenance
Cleaning the corona wire
We recommend that you put the drum unit and toner cartridge assembly on a piece of disposable paper or cloth in case you accidentally spill or scatter toner.
a Open the front cover and take out the drum unit and toner cartridge assembly.
b Clean the primary corona wire inside the drum unit by gently sliding the blue tab from right to left and left to right several times.
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