HP Laserjet p3015 - Manual (Page 135)

2. Remove the used print cartridge from the product.
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3. Remove the new print cartridge from the bag. Place the used print cartridge in the bag for recycling.
4. Grasp the front and back of the print cartridge, and distribute the toner by gently rocking the print
cartridge five or six times.
CAUTION: Do not touch the shutter or the surface of the roller.
ENWW Replace supplies and parts 123