HP MFP M528f Monochrome Laser Printer - Manual (Page 55)

2. Open the front door.
3. Grasp the handle of the used toner cartridge and
pull out to remove it.
4. Remove the new toner cartridge from its protective
shell by tearing off the plastic strip and opening the
package. Save all packaging for recycling the used
toner cartridge.
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ENWW Replace the toner cartridge 41