The drum is part of the laser toner cartridge
Open the front door
Press the square button in the center of the paper receiving are, it is marked with a small triangle
Press and pull, it will open a door showing the toner cartridge
Pull out the toner cartridge
The top part is black and the bottom assembly is grey
There is a blue little latch in the right side of the cartridge
Press the latch and the toner cartridge will be release
Remove the toner cartridge.
You need to replace the grey bottom assembly with a new one
A compatible assembly, which will have a new drum, will cost around
$30 at amazon an oem around $70
Reassembly and reinstall in reverse of the disassembly I hope this was helpful
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